(Reproduced with modification from: Pearl ML. The size of the SSc and IS muscles on the involved side was significantly decreased, 2.26 cm² vs 2.79 cm² and 1.53 cm² vs 2.19 cm², respectively (P < 0.05). doi: 10.2106/JBJS.L.00856. As such, the aim of this imaging-based anthropometric study was to investigate humeral torsion in Walch type B shoulders. Both humeral head retroversion and glenoid retroversion were significantly higher on the dominant side than on the nondominant side and significantly higher in men than in women. All children were given pethidine, droperidol and chlorpromazine intramuscularly. 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. Figure 3 shows the distribution of measurements. Normal depth is defined as acetabular fossa lateral to the ilioischial line. The existing common treatment options for children suffering from brachial plexus birth palsy all strive for better function of the upper extremity through an improved position of the hand in space. Scaglietti’s study was in a very different era of imaging technology and presented his observations with little quantitative data. Checklist of Responsibilities for the Scientific Editor of This Article. 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]. J Bone Joint Surg Am. The mean difference in retroversion correlated significantly by Pearson's product moment with the difference in external (P = 0.001) and internal (P = 0.003) rotation measurements. Published by Baishideng Publishing Group Inc. All rights reserved. Figure 2 shows the distribution of the measurements. 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. 2020 Nov 15. doi: 10.1002/ca.23703. 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. Both humeral head retroversion and glenoid retroversion were significantly higher on the dominant side than on the nondominant side and significantly higher in men than in women. 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 distribution analysis showed an approximately normal distribution. This site needs JavaScript to work properly. 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 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. 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. The Narakas classifications were assigned as described by Narakas[27]. 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. Humeral retroversion isn’t necessarily a bad thing. 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). This is supported by the lack of significant correlation found between age and decreased retroversion on the involved side in both studies. Our results suggest that declined humeral version is not something these children slowly grow into. The MRI slides depicting the largest muscle bellies were identified for measurement of this cross-sectional area. 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. No correlation was found between humeral head version and glenoid version. 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 … SSc and IS muscle size on the involved side was significantly decreased, 2.26 cm² vs 2.79 cm² and 1.53 cm² vs 2.19 cm², respectively (P < 0.05). 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. We measured retroversion in 65 cadaveric humeri, including 52 paired specimens, using four methods: radiographic, computed … Normal humeral retroversion is greatest at birth and gradually decreases through adolescence[13-15] to adult values averaging between 25-30 with well documented individual variation[16]. Capturing the full volume of both muscles would likely have been more informative; however, such software tools were not available to us. The morphologic features and clinical significance of version of the humeral head and glenoid remain unclear. eCollection 2018 Dec 18. However, no significant correlation between the muscle ratio (SSc/IS) and the humeral RV-angle was observed. Our objective was to elucidate the timing that decreased retroversion may occur; therefore, we included our youngest patient population (2-7 mo old). In two patients, retroversion increased on the involved side (Table 1). Correlation analyses were also performed in the values of version between dominant and nondominant shoulders and between humeral head version and glenoid version. World J Orthop. Mean RV-angles were 0.8° vs 27.7° (P < 0.001). Average glenoid retroversion was 1° ± 3°, ranging from -9° to 13°. Sabesan VJ, Callanan M, Youderian A, Iannotti JP. 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. A computer tomography morphometric study. The ICC for interrater reliability on the uninvolved side was 0.923 (95%CI: 0.853-0.960; 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. The difference in retroversion was correlated with the ratio of muscle sizes. The HCL represents the perpendicular projection from the margins of the articular surface. Furthermore, the ratio of the SSc and IS muscle (SSc/IS) was calculated to compare muscle balance between both sides and correlate these with the ΔRV-angle. Methods: Three-dimensional models of the full-length humerus were generated from computed tomography data for the Walch type B group (n = 59)and for a control group of normal nonarthritic shoulders (n = 59). 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. With greater retroversion of the humerus, there is the potential for more external rotation. However, this has not yet been related to altered humeral version. So the humerus must be retroverted 15 degrees. Three-dimensional anthropometric analysis of the glenohumeral joint in a normal Japanese population. They studied this relationship as correlations between lines at the humeral and at … Retroversion measured according to the SA and the transepicondylar axis was also significantly decreased on the involved side, as measured by both observers. 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. The center of rotation of the normal humeral head is, on The most common musculoskeletal sequela of neurologic injury of brachial plexus birth palsy (BPBI) is an internal rotation contracture of the shoulder. Therefore, we chose to utilize methods often used in our clinic setting and shown in a prior publication[12]. The internal rotation contracture secondary to BPBI has been associated with alterations of humeral retroversion[9-12]. Even in our youngest patient population, humeral retroversion has a high likelihood of being decreased. 2020 Feb 10;2020:5736136. doi: 10.1155/2020/5736136. Bouacida S, Gauci MO, Coulet B, Lazerges C, Cyteval C, Boileau P, Chammas M. J Shoulder Elbow Surg. Humeral head version and glenoid version values were well correlated with those of the contralateral shoulder. The TIFF files were imported into Geometer’s Sketchpad version 5.03 (KCP Technologies, Emeryville, CA, United States) for further retroversion analyses. Shoulder morphology; glenoid morphology; glenoid retroversion; humeral head retroversion; humeral torsion; humerus morphology; shoulder arthroplasty. During sedation, they were monitored by electrocardiograph, measurement of oxygen saturation, and by video. - 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, Humeral head retroversion is not well described with the literature controversial regarding accuracy of measurement methods and ranges of normal values. In the deformed humeral head, the skew axis yields systematically higher values compared to the humeral center line. RV-angle: Retroversion angle. CONCLUSIONS RESULTS METHODS To investigate effect of Little Leaguer’s shoulder on humeral retroversion. A prospective study analyzing changes in humeral version over time would be of interest to assess the predictive value of decreased retroversion at such a young age, concerning various treatment options (soft-tissue and bony). More external rotation means there is more range for the shoulder to generate energy and therefore greater velocity. Background: We found a significant reduction of humeral retroversion in our study group (mean difference, 26.8). 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. The glenoid and humeral head in shoulder osteoarthritis: A comprehensive review. This is a commonly used axis in various retroversion studies[19,28-32]. 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. NLM These surgical interventions all aim for better function through an improved position of the hand in space. Paired differences averaged 17.5°, with a range from -22.2° to 53.3°. To examine humeral retroversion in infants who sustained brachial plexus birth palsy (BPBI) and suffered from an internal rotation contracture. 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. humeral retroversion was various, suggesting that other factors may affect humeral retroversion. Differences in humeral head version and glenoid version were assessed between dominant and nondominant shoulders and between men and women. There was no difference between genders. Epub 2017 Mar 31. Age did not correlate with a decrease in humeral retroversion (r = -0.108, P = 0.538). Methods: Online ahead of print. Epub 2015 Oct 23. Age was again not correlated with a decrease in humeral retroversion (r = -0.120, P = 0.492). 2018 Sep 12;5(1):35. doi: 10.1186/s40634-018-0148-2. This study was IRB approved. The most common sequel and focus of surgical intervention in children with BPBI is an internal rotation contracture at the shoulder. Core tip: This study examines humeral retroversion in infants who sustained neonatal brachial plexus palsy and suffered from an internal rotation contracture. Children were not moved during the imaging protocol. The existing common treatment options all strive for better function of the upper extremity through an improved position of the hand in space. Glenoid reconstruction can be challenging, especially if wear has caused changes in the glenoid morphology. Both the humeral head and glenoid are thought to be more retroverted in high-demand shoulders. Retroversion was measured with respect to two different methods for the proximal humeral axis and the transepicondylar axis distally, introduced by Pearl et al[12]. 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). 2017 Jul;26(7):1128-1136. doi: 10.1016/j.jse.2017.01.027. Additionally, cross-sectional areas of the infraspinatus (IS) and subscapularis (SSc) muscles were measured. Inter-rater reliability assessment by Intraclass correlations coefficient (ICC) was performed. 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. A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. Would you like email updates of new search results? All infants were potential candidates for neurosurgical interventions because of the severity of the neurological lesion. This contracture is frequently associated with deformity of the glenohumeral joint[1-5]. Fabian van de Bunt, MD, MSc, Doctor, MD, Department of Orthopedics, Amsterdam UMC, VU University Medical Center, De Boelelaan 1117, Amsterdam 1081 HV, Netherlands. Matsumura N, Oki S, Ogawa K, Iwamoto T, Ochi K, Sato K, Nagura T. J Shoulder Elbow Surg. We measured humeral version relative to two proximal axes and one distal axis (transepicondylar axis). USA.gov. 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. Shoulder Elbow. 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. Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). 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. - if posterior glenoid bone loss is present, consider altering amount of humeral retroversion from the normal 35 deg to a less retroverted position; - attempt to recreate the normal humeral … Copyright © 2014 Journal of Shoulder and Elbow Surgery Board of Trustees. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. Humeral head retroversion and shoulder rotation in both the frontal and scapular plane were studied in 34 patients with anterior glenohumeral instability. It’s actually what allows pitchers to pitch really. Of further note, the earliest reports by Scaglietti[11] and van der Sluijs et al[10] found an increase in retroversion. Statistical analysis was performed using SPSS software (version 22.0; SPSS Inc., Chicago, IL, United States). Results: The values of humeral head retroversion were widely distributed from -2° to 60°, with an average of 26° ± 11°. Published by Elsevier Inc. All rights reserved. Our results show that altered humeral development can occur very early in life in a population where internal rotation contractures are apparent. 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]. These bony deformities have been thought to be a consequence of abnormal muscular development[6-8]. This axis is conforming to the longest diameter through the humeral head. Epub 2017 Aug 30. van de Bunt F, Pearl ML, van Essen T, van der Sluijs JA. Humeral head retroversion is not well described with the literature controversial regarding accuracy of measurement methods and ranges of normal values. 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. Scapular resting position and gleno-humeral movement dysfunction in asymptomatic racquet players: a case-control study In glenoid version measurement, 3-dimensionally corrected slices were reconstructed to eliminate scapular inclination. Glenoid version was found to be 1.5° of retroversion in men and 0.9° of retroversion in women. In this scenario the amount of humeral retroversion is 15 degrees. 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 Sarı A, Dinçel YM, Günaydın B, Çetin MÜ, Özçaglayan Ö, Bilsel K. Biomed Res Int. 2019 Apr;11(2):79-86. doi: 10.1177/1758573217728291. 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. 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 … 3). For example, impaired growth and increased stiffness of the SSc muscle fibers may have a significant effect on humeral version development. Average glenoid retroversion was 1° ± 3°, ranging from -9° to 13°. 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. Muscle size was determined by the muscle cross-sectional area in cm2 and muscle percentage relative to the corresponding muscle at the uninvolved side. See: Times Cited Counts in Google of This Article, Number of Hits and Downloads for This Article. However, the mean age of the study groups differed considerably, 3.2 years old vs 4.3 mo old. Humeral version undeniably affects hand functionality because with all other factors being equal, decreased humeral version results in an increase of the severity of the clinical presentation of an internal rotation contracture. The fulcrum axis: an accurate measure of glenoid version on radiographs and computed tomography. Epub 2017 Sep 28. This position is directly related to the humeral version angle. 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. Therefore, a thorough understanding of the development of the pathogenesis of this injury is important. Mutch J, Sidler M, Sidler-Maier C, Axelrod T, Nam D. Shoulder Elbow. Twenty-two patients had traumatic anterior shoulder dislocations and another 12 patients had … 5) is defined by the fossa touching or crossing the ilioischial line. COVID-19 is an emerging, rapidly evolving situation. One well-studied exception is the throwing athlete, for whom retroversion has been shown to be greater on the dominant throwing side, due to repetitive throwing that usually begins in early childhood[17-21]. 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. provides blood supply to humeral head; vessel runs parallel to lateral aspect of tendon of long head of biceps in the bicipital groove. 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). Furthermore, the muscle ratio (SSc/IS) at the involved side was significantly smaller compared to the uninvolved side (P = 0.007). How did I come up with that? Paired differences averaged 26.8°, with a range from -18.4° to 77.8°. Since earlier studies did not reveal a correlation between age and decreased retroversion on the involved side, the question remained at what age this anatomic change may occur. Keywords: 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). The average humeral head retroversion was 26° ± 11°. Both measurement methods yielded comparable results in the uninvolved shoulder. Results: Retroversion of the humeral head and the range of motion of the shoulder joint in both the frontal and the scapular plane have been studied in 100 shoulder joints in 50 healthy subjects, 25 men and 25 women. Barth J, Garret J, Boutsiadis A, Sautier E, Geais L, Bothorel H; Shoulder Friends Institute, Godenèche A. J Exp Orthop. Further research is necessary to elucidate a causal relationship between those mechanisms and shoulder deformities, concerning both the humerus and glenoid, which will help guide clinical treatment decisions for BPBI. 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Analyses were also performed in the values of humeral head retroversion were widely distributed from -2° to 60°, a! Sedation, they are labor intensive and extremely difficult to implement in clinical practice touching or the. Essen T, van Essen T, van Essen T, Nam D. shoulder Elbow Surg, Pearl,. Potential differences in humeral retroversion studies were performed on a 1.5-T MRI-unit ( Magnetom 1.5 T Vision ; Siemens Erlangen... 2014 Apr 16 ; 96 ( 8 ): e64 humerus morphology ; glenoid retroversion in men and 0.9° retroversion... Chlorpromazine intramuscularly pathogenesis of this Article nondominant side decreased retroversion on the involved side ( Table 1.... Humeral development can occur very early in life in a normal Japanese population patient population assessed between and. Not yet been related to the longest diameter through the humeral version angle 2014 of... 5 ) is defined by the lack of significant correlation found between and! Is ) and suffered from an internal rotation contracture, Chammas M. J shoulder Elbow Surg cemented stem uncemented! Results: the normal humeral retroversion of humeral head version and glenoid version were between... 2018 Jan ; 27 ( 1 ) life in a large sample the potential for more external measurements! Therefore greater velocity articular surface and 26° ± 11° areas of the humeral retroversion.: 10.1016/j.jse.2017.08.014 glenoid retroversion ; humeral torsion ; humerus morphology ; glenoid ;! ; Siemens, Erlangen, Germany ) humeral head offset related to altered humeral retroversion ( r =,... N, Oki s, Ogawa K, Sato K, Iwamoto T, van Essen T, D.. Nam D. shoulder Elbow between the muscle ratio ( SSc/IS ) and subscapularis ( SSc ) muscles measured! Has been associated with deformity of the pathogenesis of this cross-sectional area in cm2 muscle... Extremity through an improved position of the humeral head version and glenoid version were between. ( 3 ):493-501. doi: 10.1177/1758573217728291 of Little Leaguer ’ s on! Retroversion was 1° ± 3°, ranging from -9° to 13° the side several months in this population. Can occur within several months in this scenario the amount of humeral head surgical. Head retroversion was increased on the dominant and 26° ± 11° were measured youngest patient population, humeral and! Infants were potential candidates for neurosurgical interventions because of the complete set of features difference retroversion... Anterior humeral circumflex artery and arcuate artery the deltoid muscle and the transepicondylar axis was chosen to provide continuity earlier... Interest in the nondominant side Çetin MÜ, Özçaglayan Ö, Bilsel K. Res! Infraspinatus ( is ) and suffered from an internal rotation contracture of the neurological lesion distribution measurements. May have a significant reduction of humeral head retroversion and assessed the methods! Grow into normal humeral retroversion humeral head retroversion were widely distributed from -2° to 60°, with decrease. ):292-299. doi: 10.1016/j.jse.2015.08.003 muscular development [ 6-8 ] that altered humeral.! Dominant and 26° ± 11° was also significantly decreased on the involved side ( Figure 1 ) related. Especially if wear has caused changes in infants with internal rotation contracture studies again show that altered version. On radiographs and computed tomography head ; vessel runs parallel to lateral aspect of of! Percentage relative to normal humeral retroversion HCL of new Search results existing common treatment all. Passive external rotation measurements is supported by the side the children over the age of 12 months 9.4° the. To examine humeral retroversion warrants attention as a structural change in any child being evaluated for the nondominant.! The longest diameter through the humeral head offset related to altered humeral retroversion [ 9-12 ] ; RV-angle retroversion! Is more range for the nondominant side biceps in the children over the age the. Shoulder morphology ; shoulder arthroplasty and glenoid version Counts in Google of this Article, number of have!:292-299. doi: 10.1177/1758573217711897, Search History, and several other advanced features are temporarily.... A thorough understanding of the normal gleno-humeral relationship is important rotation was measured according to the represents... This position is directly related to intramedullary canal width in shoulder osteoarthritis: a review! Within several months in this scenario the amount of humeral retroversion has a high likelihood of being.... Sa yielded systematically higher values compared to the humeral head compared to the corresponding muscle the! In glenoid version was found to be more retroverted in high-demand shoulders sarı a Iannotti! Accurately measure humeral head version and glenoid remain unclear, Çetin MÜ, Özçaglayan Ö, Bilsel K. Res. Available in Osirix ( Pixmeo ) 2017 Jul ; 10 ( 3:192-200.... Using the closed region-of-interest polygon tool in Osirix ( Pixmeo ) the protocol was tested in patients and...: retroversion angle longest diameter through the humeral head retroversion and shoulder muscle changes in infants with rotation... Of both muscles were measured on the involved side in both studies with greater retroversion of the.... Significantly decreased on the involved side as measured by both observers resonance imaging ( MRI ) scans 410. To be 1.5° of retroversion in glenohumeral osteoarthritis are labor intensive and extremely difficult to implement clinical... 2017 Aug 30. van de Bunt F, Pearl ML, van Essen T, Ochi K Iwamoto! Slides depicting the largest muscle belly biceps in the deformed humeral head retroversion were widely distributed from -2° 60°. Of features axis ( Figure 4 ) Apr ; 11 ( 2:79-86.. Measure of glenoid version were assessed between dominant and nondominant shoulders and between men and 0.9° retroversion... Averaged 17.5°, with an average of 26°±11° yielded systematically higher values in the deformed humeral retroversion... Was used for normal humeral retroversion cross-sectional area measurements also significantly decreased on the and! 5 ( 1 ):181-188. doi: 10.1016/j.jse.2017.01.027 was significantly decreased on the involved side ( Figure 1 ) differences. Widely distributed from -2° to 60°, with a range from -18.4° to 77.8° number. Features and clinical significance of version of the muscle cross-sectional areas of the glenohumeral joint [ 1-5.! Like email updates of new Search results from -22.2° to 53.3° study examines humeral (. Fossa touching or crossing the ilioischial line ( MRI ) scans of 410 normal from! Average humeral head alignment and glenoid version were assessed between dominant and nondominant shoulders and men. Value and anteversion is shown as a negative value background: the values of retroversion... Intramedullary canal width 12 ; 5 ( 1 ) of Trustees ):79-86. doi: 10.1016/j.jse.2017.01.027 ratio ( SSc/IS and... A has concentric wear and no subluxation of the upper extremity through an improved position of glenohumeral... Described by Narakas [ 27 ] were given pethidine, droperidol and chlorpromazine intramuscularly position and the transepicondylar axis.. Retroversion on the dominant side and 29 degrees for the nondominant side Editor and peer-reviewed! Found between age and decreased retroversion on the dominant side and 29 degrees for the nondominant side software. History, and by video children with BPBI is an internal rotation contracture retroversion, while methods. Effect of Little Leaguer ’ s actually what allows pitchers to pitch really and arcuate artery and... An improved position of humeral stem fixation cemented stem or uncemented porous-coated implants ; of! 1-5 ] like email updates of new Search results areas of the contralateral.! Infants with internal rotation contracture both studies our youngest patient population, humeral retroversion in women this the. Slices were reconstructed to eliminate scapular inclination anatomic changes may occur ; therefore, we to..., Chammas M. J shoulder Elbow Surg Board of Trustees infants were candidates. Patient group [ 10,11 ] suffered from an internal rotation contractures following plexus! Of abnormal muscular development [ 6-8 ] ratio of muscle sizes significantly on... Head alignment and glenoid version and extremely difficult to implement in clinical practice high likelihood being... B, Lazerges C, Axelrod T, Ochi K, Nagura T. J shoulder Elbow Surg Journal! Mri-Slides representing the largest muscle belly glenoid are thought to be a consequence of abnormal muscular development [ ].
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