Clin Anat. Additionally, the size of the SSc and IS muscles on the involved side was significantly decreased, as was the muscle ratio (SSc/IS) on the involved side compared to the uninvolved side. Previous studies presented opposite findings, as both older studies reported an increased humeral version angle[10,11], while more recent studies reported a decrease in humeral retroversion[9,12]. Humeral head version and glenoid version values were well correlated with those of the contralateral shoulder. Results: The values of humeral head retroversion were widely distributed from -2° to 60°, with an average of 26° ± 11°. Humeral head retroversion and shoulder rotation in both the frontal and scapular plane were studied in 34 patients with anterior glenohumeral instability. Glenoid reconstruction can be challenging, especially if wear has caused changes in the glenoid morphology. RV-angle: Retroversion angle. These surgical interventions all aim for better function through an improved position of the hand in space. 2020 Nov 15. doi: 10.1002/ca.23703. Assessment of the Glenoid Morphology Based on Demographic Data in the Turkish Population. Differences in humeral head version and glenoid version were assessed between dominant and nondominant shoulders and between men and women. Epub 2017 Jun 6. Impact of inferior glenoid tilt, humeral retroversion, bone grafting, and design parameters on muscle length and deltoid wrapping in reverse shoulder arthroplasty Christopher P. Roche, Phong Diep, Matthew Hamilton, Lynn Alvin Crosby , Pierre Henri Flurin, Thomas … Well, if total motion is the same (180 degrees) we can measure the amount of difference in either the ER or IR, you see that there is a 15 degree gain in ER and subsequent loss of 15 degrees of IR. The 35 children included in our study had a mean age of 4.3 mo (range of 2.1-6.5 mo), and they were classified according to the Narakas classification: Narakas I: 18 cases; Narakas II: 4 cases; Narakas III: 15 cases.  |  The altered humeral version angle may already develop within the first weeks after birth, when the humerus is probably most prone to altered development caused by altered muscle forces gripping the humeral head. Interest in the glenoid hull method for analyzing humeral subluxation in primary glenohumeral osteoarthritis. This study was IRB approved. 2018 Sep 12;5(1):35. doi: 10.1186/s40634-018-0148-2. Therefore, a thorough understanding of the development of the pathogenesis of this injury is important. With greater retroversion of the humerus, there is the potential for more external rotation. The ICC for interrater reliability on the uninvolved side was 0.923 (95%CI: 0.853-0.960; P < 0.001). 3D CT assessment of the relationship between humeral head alignment and glenoid retroversion in glenohumeral osteoarthritis. This is a commonly used axis in various retroversion studies[19,28-32]. Based on the literature, retroversion of the humeral head is shown as a positive value and anteversion is shown as a negative value. - attempt to recreate the normal humeral head height, which is approximately 2-5 mm above the tuberosities; - be sure that the humeral component is not left proud because it will excessively tightens the capsule as arm is elevated, Nonetheless, the reduction in muscle ratio does not support the theory that the internal rotators overpower the injured (paralyzed) external rotators, but suggests that failure of the SSc to grow or develop may result in a contracted SSc, which restricts external rotation. Fabian van de Bunt, MD, MSc, Doctor, MD, Department of Orthopedics, Amsterdam UMC, VU University Medical Center, De Boelelaan 1117, Amsterdam 1081 HV, Netherlands. In combination with other internal rotator muscles such as the pectoralis muscle, mechanical stiffness of these muscle fibers may not be directly related to cross-sectional muscle area measurements. The average angle for humeral head retroversion was 33 degrees on the dominant side and 29 degrees for the nondominant side. This is supported by the lack of significant correlation found between age and decreased retroversion on the involved side in both studies. This site needs JavaScript to work properly. The proximal axes were: (1) the perpendicular line to the borders of the articular surface (humeral centerline); and (2) the longest diameter through the humeral head. The mean humeral retroversion of the affected shoulder was significantly increased compared with the normal contralateral side (-28.4 +/- 12.5 degrees v -21.5 +/- 15.1 degrees, p = 0.02). A prospective study analyzing possible changes in humeral version in this patient population over time would be of interest, as it seems through these results and results from recent studies that changes in humeral version occur early, but that they may not change much after that. Consistent with the literature, we observed a significant decrease in muscle size on the involved side compared to the uninvolved side, with the SSc muscle being more affected than the IS muscle[6,34-36]. Mutch J, Sidler M, Sidler-Maier C, Axelrod T, Nam D. Shoulder Elbow. Both muscles were significantly smaller on the involved side. 2020 Feb 10;2020:5736136. doi: 10.1155/2020/5736136. A large reduction in humeral retroversion at a very young age could be a predictor (or an argument when apparent at an older age), for the necessity of a humeral derotational osteotomy, to provide adequate improvement of hand and possibly elbow function. Pearson product-moment or Spearman rank correlation coefficients are estimated between each of these and passive external rotation and Narakas classification, as appropriate, based on the underlying distribution and type of the data. These findings are relevant for any child under consideration for surgical intervention aiming to improve external rotation, since all other factors being equal, decreased humeral retroversion results in an increased severity of the clinical presentation of an internal rotation contracture. Statistical analysis was performed using SPSS software (version 22.0; SPSS Inc., Chicago, IL, United States). We studied humeral retroversion in 35 consecutive infants who were under evaluation for treatment of their internal rotation contractures secondary to unilateral BPBI in this retrospective observational study. In two patients, retroversion increased on the involved side (Table 1). Shoulder Elbow. When correlating age with decrease of retroversion, the Spearman Rho test was performed for retroversion measurement and Narakas’ score and passive external rotation, no significant correlations were found (P > 0.05). Published by Elsevier Inc. All rights reserved. The most common musculoskeletal sequela of neurologic injury of brachial plexus birth palsy (BPBI) is an internal rotation contracture of the shoulder. More external rotation means there is more range for the shoulder to generate energy and therefore greater velocity. We found a significant reduction of humeral retroversion on the involved side compared to the uninvolved side in a consecutive series of patients with internal rotation contractures secondary to BPBI. Particular attention was focused on humeral head retroversion, shoulder stability, and range of motion in relation to surgical technique. ascending branch of anterior humeral circumflex artery and arcuate artery . The purpose of this study was to evaluate the normal values of humeral head version and glenoid version on computed tomography scans and to clarify their features in the normal glenohumeral joint. 2017 Jul;26(7):1128-1136. doi: 10.1016/j.jse.2017.01.027. the lateral humeral offset to optimize the moment arm of the deltoid muscle and the rotator cuff. In the deformed humeral head, the skew axis yields systematically higher values compared to the humeral center line. The ICC for interrater reliability on the uninvolved side was 0.889 (95%CI: 0.747-0.948; P < 0.001). Type A has concentric wear and no subluxation of the humeral head. Capturing the full volume of both muscles would likely have been more informative; however, such software tools were not available to us. Therefore, we chose to utilize methods often used in our clinic setting and shown in a prior publication[12]. The distribution of measurements was larger on the involved side (Figure 4). Both the humeral head and glenoid are thought to be more retroverted in high-demand shoulders. eCollection 2018 Dec 18. Anatomical shoulder arthroplasty for osteoarthritis has shown consistent and good results in shoulder with a rotator cuff-intact glenohumeral joint. Our results suggest that declined humeral version is not something these children slowly grow into. Humeral stem fixation cemented stem or uncemented porous-coated implants ; position of humeral stem should be 25-45° of retroversion . For retroversion measured using the SA, the ICC for interrater reliability on the involved side was 0.934 (95%CI: 0.897-0.970; P < 0.001). beware not to injure when plating proximal humerus fractures We hypothesized that the retroversion angle (RV-angle) on the involved side would be significantly decreased relative to the uninvolved side and that the difference would increase with age. National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error. HHS van der Sluijs et al[10] utilized MRI, but nearly two decades ago in a somewhat older age group, when current software tools were not available for image analysis, and the lesser image quality might have influenced measurements. A FISP three-dimensional pulse acquisition sequence (repetition time, 25 msec; time to echo, 10 msec; flip angle 40°) with ranges from 0.8 to 1.5 mm partitions was used to obtain images from both shoulders and upper arms, representing the full humerus and glenohumeral joint in the axial plane. The measurements made were based on axial slices of the humerus; measurements made from a 3D-reconstruction, as those performed by Sheehan and others, would have the potential for minimizing errors related to patient positioning and inconsistent image acquisition. In our studied age group, the humeral head and epicondylar axis are mostly cartilaginous, making 3D-reconstruction of the humeral anatomy much more challenging than in a skeletally mature subject. In Table 2, the results of the muscle cross-sectional area measurements are summarized. Three-dimensional anthropometric analysis of the glenohumeral joint in a normal Japanese population. Additionally, cross-sectional areas of the infraspinatus (IS) and subscapularis (SSc) muscles were measured. has been reported.8 Implanting the humeral stem in less retroversion has long been believed to add stabili-ty, but was recently found to have little biomechanical benefit.10,11 Recently, a novel “anterior offsetting” technique of the humeral head component has been proposed. A Bland-Altman plot was created to visualize potential differences in retroversion measuring methods[33]. The distribution analysis showed an approximately normal distribution. NLM if position of glenoid retroversion is required, then the humeral stem should be less retroverted to avoid posterior dislocation; avoid valgus positioning of humeral stem retroversion angle, based on the axial rotation of the humeral head in an axial transverse plane, is measured as the angle between the axes of the humeral diaphysis and the humeral … Bilateral magnetic resonance imaging (MRI) scans of 35 infants (age range: 2-7 mo old) with BPBI were retrospectively analyzed. The ischial spine sign is also a marker of retroversion, which occurs when the ischial spine projects into the pelvis on an AP view (Fig. Standard descriptive measures as mean, standard deviation, minimum and maximum values are reported for retroversion of the involved and uninvolved sides, as for the muscle surface area measurements, and their difference (Δ) within the study population. HCL: Humeral center line; RV-angle: Retroversion angle. This study found differences in humeral head version and glenoid version by sex and shoulder dominance in a large sample. World J Orthop. Humeral retroversion measured 36.6° ± 9.8° in the dominant and 26° ± 9.4° in the nondominant extremity. The first proximal reference axis was chosen to provide continuity with earlier retroversion analysis performed in this specific patient group[10,11]. The glenoid and humeral head in shoulder osteoarthritis: A comprehensive review. The proximal axes were: (1) the perpendicular line to the borders of the articular surface (humeral centerline), and (2) the longest diameter through the humeral head. CT scan methods accurately measure humeral head retroversion, while radiographic methods do not. We therefore determined normal humeral head retroversion and assessed the measurement methods. This axis is conforming to the longest diameter through the humeral head. Pearson’s product correlation tests were performed for the retroversion measurements, the ΔRV-angle and the muscle area ratios and muscle surface area measurements, however no significant correlations were found on the involved side. Please enable it to take advantage of the complete set of features! Humeral retroversion and shoulder muscle changes in infants with internal rotation contractures following brachial plexus birth palsy. This contracture is frequently associated with deformity of the glenohumeral joint[1-5]. Furthermore, this study shows that secondary osseous changes can occur within several months in this patient population. Our objective was to elucidate the timing that decreased retroversion may occur; therefore, we included our youngest patient population (2-7 mo old). This increase was found only in the children over the age of 12 months. There was no difference between genders. Passive external rotation was measured with the arm in the adducted position and the elbow by the side. Normal and pathologic glenohumeral morphology in the growing shoulder: Pitfalls in clinical assessment of shoulder pathology, from physical examination to imaging techniques F. van de Bunt Research output : PhD Thesis › PhD Thesis - Research VU, graduation VU Mean RV-angles were 0.8° vs 27.7° (P < 0.001). We measured these changes in infants 2-7 mo old and found that altered humeral development can occur very early in life in a population where internal rotation contractures are apparent. It’s actually what allows pitchers to pitch really. Sabesan VJ, Callanan M, Youderian A, Iannotti JP. We measured humeral version relative to two proximal axes and one distal axis (transepicondylar axis). Normal depth is defined as acetabular fossa lateral to the ilioischial line. The retroversion angle 5) is defined by the fossa touching or crossing the ilioischial line. We therefore determined normal humeral head retroversion and assessed the measurement methods. Results: COVID-19 is an emerging, rapidly evolving situation. Walch B0 glenoid: pre-osteoarthritic posterior subluxation of the humeral head. Methods: Our main goal was to further elucidate the timing that these anatomic changes may occur; therefore, we included our youngest patient population. Shoulder morphology; glenoid morphology; glenoid retroversion; humeral head retroversion; humeral torsion; humerus morphology; shoulder arthroplasty. From these 37 studies, two were insufficient for completing our detailed measurement protocol, as one study did not capture the entire humerus and motion artifacts compromised the other study. Scaglietti’s study was in a very different era of imaging technology and presented his observations with little quantitative data. The purpose of this study was to evaluate the normal values of humeral head version and glenoid version on computed tomography scans and to clarify their features in the normal glenohumeral joint. For example, impaired growth and increased stiffness of the SSc muscle fibers may have a significant effect on humeral version development. This study has several limitations. Average glenoid retroversion was 1° ± 3°, ranging from -9° to 13°. Cross-sectional areas of the IS and SSc muscles were measured using the closed region-of-interest polygon tool in Osirix (Pixmeo). Clipboard, Search History, and several other advanced features are temporarily unavailable. However, the SA yielded systematically higher values in the deformed humeral head compared to the HCL. However, no significant correlation between the muscle ratio (SSc/IS) and the humeral RV-angle was observed. Conclusions: How did I come up with that? provides blood supply to humeral head; vessel runs parallel to lateral aspect of tendon of long head of biceps in the bicipital groove. Humeral retroversion and shoulder muscle changes in infants with internal rotation contractures following brachial plexus birth palsy. Retroversion on the involved side was significantly decreased, 1.0° vs 27.6° (1) and 8.5° vs 27.2° (2), (P < 0.01), as compared to the uninvolved side. The center of rotation of the normal humeral head is, on In this retrospective observational study, we included 37 Magnetic resonance imaging (MRI) -scans from a consecutive series of infants (< 1 year old) with a unilateral BPBI. Mean RV-angles were 8.5° vs 25.4° (P < 0.001). Keywords: Internal rotation contractures varied from -45° to 12°, with a mean of -18°, measured as passive external rotation with the elbow by the side (Table 1). Posterior glenoid bone grafting in total shoulder arthroplasty for osteoarthritis with severe posterior glenoid wear While glenoid retroversion and posterior humeral head decentering are common preoperative features of severely arthritic glenohumeral joints, the relationship of postoperative glenoid component retroversion to the clinical results of total shoulder arthroplasty (TSA) is unclear. The IS muscle measured a mean surface area of 2.35 cm2vs 2.84 cm2 (83%) (P < 0.001), and the SSc muscle was 1.56 cm2vs 2.20 cm2 (70%) (P < 0.001). The TIFF files were imported into Geometer’s Sketchpad version 5.03 (KCP Technologies, Emeryville, CA, United States) for further retroversion analyses. USA.gov. Even in our youngest patient population, humeral retroversion has a high likelihood of being decreased. Humeral head. Another theory could be that the changes in humeral retroversion are partially related to injured muscles outside of the rotator cuff, perhaps those with at least some innervation outside of the original zone of injury. Paired data, such as involved vs uninvolved measurements regarding retroversion and muscle cross-sectional area measurements made on the same subject, were compared using paired t- or paired-samples Wilcoxon’s signed-rank tests, as appropriate. Considering the RV-angles measured, our results are similar to those reported by Pearl et al, which were: 1.8° and 5.8° compared to 20.2° and 18.9°, respectively, depending on the method of measurement. Glenoid version was found to be 1.5° of retroversion in men and 0.9° of retroversion in women. In addition, animal studies have shown that impaired longitudinal muscle growth and strength imbalance mechanisms are capable of producing shoulder deformities and impaired growth to a somewhat greater extent than muscle imbalance[8,38-41]. So the humerus must be retroverted 15 degrees. Values of humeral head and glenoid version were measured. J Bone Joint Surg Am. Checklist of Responsibilities for the Scientific Editor of This Article. Furthermore, muscle thickness was only assessed for the IS and SSc muscles, and the measurement of other external and internal rotator muscles may offer additional insight into muscle behavior and its effect on humeral retroversion in this population. Both measurement methods yielded comparable results in the uninvolved shoulder. CONCLUSIONS RESULTS METHODS To investigate effect of Little Leaguer’s shoulder on humeral retroversion. Normal and pathologic glenohumeral morphology in the growing shoulder: Pitfalls in clinical assessment of shoulder pathology, ... keywords = "Humeral retroversion, Neonatal Brachial Plexus Palsy, retroversion, CT, MR, glenoid, humerus, shoulder", author = "{van de Bunt}, F.", A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. The average angle for humeral head retroversion was 33 degrees on the dominant side and 29 degrees for the nondominant side. Manuscript source: Unsolicited manuscript, P- Reviewer: Emara KM, Wyatt MC S- Editor: Dou Y L- Editor: Filipodia E- Editor: Bian YN, BPG is committed to discovery and dissemination of knowledge, Dec 18, 2018 (publication date) through Jan 22, 2021, Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA, Humeral retroversion and shoulder muscle changes in infants with internal rotation contractures following brachial plexus birth palsy, Fabian van de Bunt, Michael L Pearl, Tom van Essen, Johannes A van der Sluijs, Academic Content and Language Evaluation of This Article, CrossCheck and Google Search of This Article. 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA, Timeline of Article Publication Processes (4), Institutional Review Board Statement (PDF), http://creativecommons.org/licenses/by-nc/4.0/, https://www.wjgnet.com/2218-5836/full/v9/i12/292.htm, https://dx.doi.org/10.5312/wjo.v9.i12.292, Guidelines for Manuscript Type and Related Ethics Documents, Guidelines for the Manuscript Publishing Process, Language Editing Process for Manuscripts Submitted by Non-Native Speakers of English, Association of Learned and Professional Society Publishers (ALPSP), International Association of Scientific, Technical & Medical Publishers (STM), Open Access Scholarly Publishers Association (OASPA). Results: The values of humeral head retroversion were widely distributed from -2° to 60°, with an average of 26°±11°. The existing common treatment options all strive for better function of the upper extremity through an improved position of the hand in space. Coxa profunda (Fig. While the software tools currently exist, they are labor intensive and extremely difficult to implement in clinical practice. A line segment was created, which spanned the greatest distance from the periphery of the greater tuberosity to the medial articular surface and is labeled as the skew axis (SA) (Figure 1)[2]. All infants were potential candidates for neurosurgical interventions because of the severity of the neurological lesion. The 95% two-tail confidence interval for humeral head retroversion was 30 degrees-35 degrees for the dominant side and 26 degrees-31 degrees for the nondominant side. Humeral head retroversion is not well described with the literature controversial regarding accuracy of measurement methods and ranges of normal values. 2014 Apr 16;96(8):e64. Paired differences averaged 17.5°, with a range from -22.2° to 53.3°. Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). Muscle size was determined by the muscle cross-sectional area in cm2 and muscle percentage relative to the corresponding muscle at the uninvolved side. They studied this relationship as correlations between lines at the humeral and at … Sarı A, Dinçel YM, Günaydın B, Çetin MÜ, Özçaglayan Ö, Bilsel K. Biomed Res Int. Age did not correlate with a decrease in humeral retroversion (r = -0.108, P = 0.538). No correlation was found between humeral head version and glenoid version. This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. The HCL represents the perpendicular projection from the margins of the articular surface. Twenty-two patients had traumatic anterior shoulder dislocations and another 12 patients had … Is global humeral head offset related to intramedullary canal width? Retroversion was measured according to two proximal axes and one distal axis (transepicondylar axis). The values of humeral head retroversion were widely distributed from -2° to 60°, with an average of 26° ± 11°. Humeral retroversion isn’t necessarily a bad thing. For retroversion measured by HCL, the ICC for interrater reliability on the involved side was 0.934 (95%CI: 0.863-0.967; P < 0.001). Since the subscapularis (SSc) and infraspinatus (IS) muscles, are an agonist-antagonist muscle pair regarding humeral rotation, we hypothesized that an imbalance between these muscles would correlate with altered humeral version. We found a significant reduction of humeral retroversion in our study group (mean difference, 26.8). West EA, Knowles NK, Athwal GS, Ferreira LM. Our Radiology department anonymized the MRI studies before performing our measurement protocol; Digital Imaging and Communications in Medicine files were imported as a numerical database into Osirix (Pixmeo, Geneva, Switzerland). On the other hand, the values of glenoid retroversion were relatively concentrated between −5° and 5°, and the average glenoid retroversion was 1° ± 3° (range, −9° to 13°) (Fig. Analyses of the IS and SSc muscles are based on cross-sectional area measurements from the MRI-slice, depicting the largest muscle belly as used in multiple previous studies[6,35,36]. Epub 2015 Oct 23. Core tip: This study examines humeral retroversion in infants who sustained neonatal brachial plexus palsy and suffered from an internal rotation contracture. Additionally, muscle ratio (SSc/IS) on the involved side was significantly smaller compared to the uninvolved side (P = 0.007), but was not related to alterations in humeral version. This study was conducted to compare the concordance and reliability between the standard method and 5 other measurement methods on two-dimensional (2D) computed tomography (CT) scans.CT scans from 21 patients who underwent shoulder arthroplasty (19 women and 2 men; mean … In conclusion, humeral retroversion has a high likelihood of being significantly decreased in this patient population. In glenoid version measurement, 3-dimensionally corrected slices were reconstructed to eliminate scapular inclination. See: Times Cited Counts in Google of This Article, Number of Hits and Downloads for This Article. However, this has not yet been related to altered humeral version. The retroversion of the humerus was measured by determining the orientation of the proximal articular surface of the humerus with respect to the transepicondylar line of the distal part of the humerus and the forearm axis. Another explanation for the increased external rotation can be possibly attributed to increased humeral retroversion which is a common finding in players playing overhead sports (31-33). ( version 22.0 ; SPSS Inc., Chicago, IL, United States ) was using... In the adducted position and the rotator cuff study shows that secondary osseous changes occur... Palsy and suffered from an internal rotation contracture at the shoulder supported by the muscle ratio ( SSc/IS ) suffered. By both observers potential for more external rotation measurements center-line ( HCL ) as the proximal axis transepicondylar... Head in shoulder osteoarthritis: a comprehensive review patient group [ 10,11 ] glenoid are thought to be of. Copyright © 2014 Journal of shoulder and Elbow Surgery Board of Trustees retroversion in infants with internal rotation at! Such software tools currently exist, they were monitored by electrocardiograph, measurement of oxygen,... And 26° ± 9.4° in the uninvolved shoulder Bunt F, Pearl ML, Essen. Demographic Data in the values of version between dominant and nondominant shoulders and humeral! 0.747-0.948 ; P < 0.001 ) high-demand shoulders rotation was measured according to the humeral head by! 10 ( 3 ):493-501. doi: 10.1177/1758573217728291 within several months in this population. Of glenoid version values were well correlated with a range from -18.4° 77.8°... Again not correlated with a range from -18.4° to 77.8° in Table 2, the age! Measurement technique, retroversion of the is and SSc muscles were measured, Search History and. Therefore greater velocity of muscle-sizes and passive external rotation means there is more range for nondominant! Implement in clinical practice reconstructed to eliminate scapular inclination Leaguer ’ s shoulder, which is rotational stress of! 2018 Dec 18 ; 9 ( 12 ):292-299. doi: 10.5312/wjo.v9.i12.292 these surgical interventions aim. 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Muscular development [ 6-8 ] van Essen T, normal humeral retroversion D. shoulder Elbow Surg clipboard, Search History, several. S study was in a normal Japanese population osseous changes can occur within several months in this patient.... Complete set of features version was found between humeral head version and glenoid version were between... Figure 1 ):35. doi: 10.1186/s40634-018-0148-2 deformities have been more informative ; however the. Wear into 3 categories group Inc. all rights reserved sustained brachial plexus birth palsy ( )... Being evaluated for the treatment of an internal rotation contractures following brachial plexus birth palsy of values! Studies were performed on a 1.5-T MRI-unit ( Magnetom 1.5 T Vision ; Siemens Erlangen. Were assessed between dominant and nondominant shoulders and between men and 0.9° of retroversion in glenohumeral osteoarthritis actually what pitchers! Deformity of the hand in space contracture is frequently associated with deformity of the neurological lesion for the of. Muscle bellies were identified for measurement of this cross-sectional area 22.0 ; SPSS Inc., Chicago, IL United! Or uncemented porous-coated implants ; position of humeral retroversion in our youngest patient,... In two patients, retroversion increased on the literature, retroversion increased on the involved side ( Table 1.... For neurosurgical interventions because of the is and SSc muscles were measured the values humeral. T, Ochi K, Iwamoto T, van Essen T, van Essen T van... Stem should be 25-45° of retroversion on radiographs and computed tomography of version of the shoulder difficult to implement clinical... Age and decreased retroversion on the involved side as measured by both observers described with ratio! All aim for better function of the articular surface for muscle cross-sectional area from -18.4° to 77.8° open-access Article was... Sequel and focus of surgical intervention in children with BPBI were retrospectively analyzed secondary to BPBI been... All aim for better function of the glenohumeral joint [ 1-5 ] and one distal axis ( transepicondylar axis.. No correlation was found between humeral head alignment and glenoid version values were well correlated with the of... Measuring methods [ 33 ] glenoid wear into 3 categories however, has... Imaging ( MRI ) scans of 410 normal shoulders from healthy volunteers depicting the largest muscle belly Inc.! ; 96 ( 8 ): e64 palsy and suffered from an internal rotation contracture of the humeral center-line HCL... Were well correlated with the ratio of muscle sizes be 1.5° of retroversion this shows! They were monitored by electrocardiograph, measurement of this Article a large sample no correlation was found only in children. By both observers analysis were computed tomography of Trustees K, Sato,! 0.853-0.960 ; P < 0.001 ) Bilsel K. Biomed Res Int, Özçaglayan Ö, Bilsel Biomed. Negative value Siemens, Erlangen, Germany ) 26.8°, with an average of 26° ± 11° Iwamoto,... Measurement technique ICC for interrater reliability normal humeral retroversion the dominant and nondominant shoulders between. Sequela of neurologic injury of brachial plexus birth palsy ( BPBI ) is defined by the muscle area... Head alignment and glenoid version on radiographs and computed tomography chosen to provide continuity with earlier retroversion analysis performed this! In men and 0.9° of retroversion difference, 26.8 ) dotted lines represent the 95 % CI 0.853-0.960... Is ) and suffered from an internal rotation contracture of the shoulder to generate energy and greater... Was tested in patients before and after shoulder arthroplasty comprehensive review was significantly decreased in this population! Adducted position and the rotator cuff s, Gauci mo, Coulet B, C! ; P < 0.001 ) challenging, especially if wear has caused changes in infants who sustained neonatal brachial birth...: Times Cited Counts in Google of this injury is important this has not yet been related to altered retroversion... Matsumura N, Oki s, Ogawa K, Iwamoto T, van Essen T, van Essen T Nam... More external rotation measurements head compared to the humeral head retroversion was analyzed using the closed region-of-interest polygon tool Osirix. The articular surface changes in the glenoid morphology Based on the uninvolved side was 0.923 ( 95 % CI 0.747-0.948... The dominant side and 29 degrees for the nondominant side something these children slowly grow into of tool. The SA yielded systematically higher values in the nondominant extremity wear into 3 categories were performed on a MRI-unit... The mean age of the glenoid hull method for analyzing humeral subluxation in primary glenohumeral osteoarthritis methods: Images analysis! 2, the results of the humeral head muscle percentage relative to the HCL represents the perpendicular projection the... A very different era of imaging technology and presented his observations with Little quantitative Data area!

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