1
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Güçlü D, Ünlü EN, Arıcan M, Acar O, Uludağ V, Oğul H. Glenohumeral Joint Volume Measurement in Patients with Shoulder Instability: A 3D Volumetric Magnetic Resonance Arthrographic Study. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1508. [PMID: 39336549 PMCID: PMC11433850 DOI: 10.3390/medicina60091508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2024] [Revised: 09/04/2024] [Accepted: 09/11/2024] [Indexed: 09/30/2024]
Abstract
Background and Objectives: This study aimed to compare capsular volume in patients with shoulder instability to that in control subjects without instability using magnetic resonance (MR) arthrography. The objective was to develop a reliable screening method with which to assess shoulder volume. Materials and Methods: In 21 patients with atraumatic shoulder instability and 21 controls, thin-slice 3D volumetric MR arthrography sequences were obtained. MR arthrography images were uploaded to 3D reconstruction, and 3D images were generated. From the 3D reconstructed images, volumetric measurements of rotator interval (RI), anterior and posterior capsular (AC, PC) recesses, biceps tendon sheath (BS), axillary recess (AR), and total glenohumeral joint (TGJ) were performed. Individuals with any extra-articular contrast leakage were also recorded. Results: A retrospective study analyzed a patient group of 21 individuals with shoulder instability (mean age 29.52 ± 12.83 years) and a control group of 21 individuals without instability (mean age 35.71 ± 12.77 years). No statistically significant differences were identified between the groups with regard to age, gender, or side distribution. The mean total joint volume was significantly higher in the instability group (29.85 ± 6.40 cm3) compared to the control group (23.15 ± 3.48 cm3, p = 0.0001). Additionally, the mean volumes of the RI, AC, PC, BS, and AR were all significantly greater in the patient group compared to the control group. Conclusions: 3D volumetric MR arthrographic measurements of the shoulder joint capacity can provide valuable insights for clinical follow-up and guide surgical treatment decisions in cases of atraumatic shoulder instability.
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Affiliation(s)
- Derya Güçlü
- Faculty of Medicine, Duzce University, Düzce 81620, Turkey; (E.N.Ü.); (M.A.); (O.A.); (V.U.); (H.O.)
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2
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Tisherman RT, Bulleit C, Champagne AA, Fatora GC, Lau BC. There is high variability in quantitative measurement techniques in glenohumeral capsular measurements for shoulder instability: A systematic review. Knee Surg Sports Traumatol Arthrosc 2024; 32:2161-2169. [PMID: 38796731 DOI: 10.1002/ksa.12236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/03/2024] [Accepted: 04/24/2024] [Indexed: 05/28/2024]
Abstract
PURPOSE Instability of the glenohumeral joint remains a complex clinical issue with high rates of surgical failure and significant morbidity. Advances in specific radiologic measurements involving the glenoid and the humerus have provided insight into glenohumeral pathology, which can be corrected surgically towards improving patient outcomes. The contributions of capsular pathology to ongoing instability remain unclear. The purpose of this study is to provide a systematic review of existing glenohumeral capsular measurement techniques published in the last 15 years. METHODS A systematic review of multiple databases was performed following PRISMA guidelines for all primary research articles between 2008 and 2023 with quantitative measurements of the glenohumeral capsule in patients with instability, including anterior, posterior and multi-directional instability. RESULTS There were a total of 14 articles meeting the inclusion criteria. High variability in measurement methodology across studies was observed, including variable amounts of intra-articular contrast, heterogeneity among magnetic resonance sequence acquisitions, differences in measurements performed and the specific approach taken to compute each measurement. CONCLUSION There is a need for standardization of methods in the measurement of glenohumeral capsular pathology in the setting of glenohumeral instability to allow for cross-study analysis. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
| | - Clark Bulleit
- Duke University Hospital, Durham, North Carolina, USA
| | | | | | - Brian C Lau
- Duke University Hospital, Durham, North Carolina, USA
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3
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Chang EY, Bencardino JT, French CN, Fritz J, Hanrahan CJ, Jibri Z, Kassarjian A, Motamedi K, Ringler MD, Strickland CD, Tiegs-Heiden CA, Walker REA. SSR white paper: guidelines for utilization and performance of direct MR arthrography. Skeletal Radiol 2024; 53:209-244. [PMID: 37566148 PMCID: PMC10730654 DOI: 10.1007/s00256-023-04420-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/23/2023] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVE Direct magnetic resonance arthrography (dMRA) is often considered the most accurate imaging modality for the evaluation of intra-articular structures, but utilization and performance vary widely without consensus. The purpose of this white paper is to develop consensus recommendations on behalf of the Society of Skeletal Radiology (SSR) based on published literature and expert opinion. MATERIALS AND METHODS The Standards and Guidelines Committee of the SSR identified guidelines for utilization and performance of dMRA as an important topic for study and invited all SSR members with expertise and interest to volunteer for the white paper panel. This panel was tasked with determining an outline, reviewing the relevant literature, preparing a written document summarizing the issues and controversies, and providing recommendations. RESULTS Twelve SSR members with expertise in dMRA formed the ad hoc white paper authorship committee. The published literature on dMRA was reviewed and summarized, focusing on clinical indications, technical considerations, safety, imaging protocols, complications, controversies, and gaps in knowledge. Recommendations for the utilization and performance of dMRA in the shoulder, elbow, wrist, hip, knee, and ankle/foot regions were developed in group consensus. CONCLUSION Although direct MR arthrography has been previously used for a wide variety of clinical indications, the authorship panel recommends more selective application of this minimally invasive procedure. At present, direct MR arthrography remains an important procedure in the armamentarium of the musculoskeletal radiologist and is especially valuable when conventional MRI is indeterminant or results are discrepant with clinical evaluation.
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Affiliation(s)
- Eric Y Chang
- Radiology Service, VA San Diego Healthcare System, San Diego, CA, USA
- Department of Radiology, University of California, San Diego Medical Center, San Diego, CA, USA
| | - Jenny T Bencardino
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Cristy N French
- Department of Radiology, Penn State Hershey Medical Center, Hummelstown, PA, USA
| | - Jan Fritz
- Department of Radiology, New York University Grossman School of Medicine, New York, NY, USA
| | | | - Zaid Jibri
- GNMI in Mississauga, Greater Toronto Area, Toronto, ON, Canada
| | - Ara Kassarjian
- Department of Radiology, Division of Musculoskeletal Imaging, Olympia Medical Center, Elite Sports Imaging, Madrid, Spain
| | - Kambiz Motamedi
- Department of Radiology, University of California, Los Angeles Medical Center, Los Angeles, CA, USA
| | | | - Colin D Strickland
- Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Richard E A Walker
- McCaig Institute for Bone and Joint Health, Calgary, Canada.
- Cumming School of Medicine, University of Calgary, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada.
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4
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Rawal A, Eckers F, Lee OSH, Hochreiter B, Wang KK, Ek ET. Current Evidence Regarding Shoulder Instability in the Paediatric and Adolescent Population. J Clin Med 2024; 13:724. [PMID: 38337418 PMCID: PMC10856087 DOI: 10.3390/jcm13030724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Paediatric and adolescent shoulder instability is caused by a unique combination of traumatic factors, ligamentous laxity, and pattern of muscle contractility. The multifactorial nature of its aetiology makes interpretation of the literature difficult as nomenclature is also highly variable. The purpose of this review is to summarize the existing literature and shed light on the nuances of paediatric and adolescent shoulder instability. The epidemiology, clinical features, imaging, and management of all forms of paediatric shoulder instability are presented. The main findings of this review are that structural abnormalities following a dislocation are uncommon in pre-pubertal paediatric patients. Young post-pubertal adolescents are at the highest risk of failure of non-operative management in the setting of traumatic instability with structural abnormality, and early stabilisation should be considered for these patients. Remplissage and the Latarjet procedure are safe treatment options for adolescents at high risk of recurrence, but the side-effect profile should be carefully considered. Patients who suffer from instability due to generalized ligamentous laxity benefit from a structured, long-term physiotherapy regimen, with surgery in the form of arthroscopic plication as a viable last resort. Those who suffer from a predominantly muscle patterning pathology do not benefit from surgery and require focus on regaining neuromuscular control.
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Affiliation(s)
- Aziz Rawal
- Melbourne Orthopaedic Group, Windsor, Melbourne, VIC 3181, Australia; (A.R.); (F.E.)
| | - Franziska Eckers
- Melbourne Orthopaedic Group, Windsor, Melbourne, VIC 3181, Australia; (A.R.); (F.E.)
- Orthopädie und Traumatologie, Universitätsspital Basel, 4031 Basel, Switzerland
| | - Olivia S. H. Lee
- Victorian Paediatric Rehabilitation Service, The Royal Children’s Hospital, Melbourne, VIC 3052, Australia;
| | - Bettina Hochreiter
- Melbourne Orthopaedic Group, Windsor, Melbourne, VIC 3181, Australia; (A.R.); (F.E.)
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, 8006 Zürich, Switzerland
| | - Kemble K. Wang
- Department of Orthopaedic Surgery, The Royal Children’s Hospital, Melbourne, VIC 3052, Australia;
| | - Eugene T. Ek
- Melbourne Orthopaedic Group, Windsor, Melbourne, VIC 3181, Australia; (A.R.); (F.E.)
- Department of Surgery, Monash University, Melbourne, VIC 3800, Australia
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5
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Albishi W. Recurrent bilateral atraumatic shoulder dislocation in a young patient with bilateral shoulder multidirectional instability: Treatment consideration and description of a surgical technique. Int J Surg Case Rep 2023; 112:108923. [PMID: 37839256 PMCID: PMC10667758 DOI: 10.1016/j.ijscr.2023.108923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 09/30/2023] [Accepted: 09/30/2023] [Indexed: 10/17/2023] Open
Abstract
INTRODUCTION Multidirectional instability is defined as symptomatic glenohumeral joint subluxation or dislocation occurring in more than one direction. Multidirectional shoulder instability with recurrent shoulder dislocation is a rare condition with controversies in the literature about the best treatment strategy. Physiotherapy remains the initial treatment of choice, and surgical intervention should be performed only if debilitating symptoms continue to be experienced. CASE PRESENTATION A young healthy male presented with bilateral shoulder multidirectional instability and recurrent shoulders atraumatic dislocation. The patient was treated with a supervised physiotherapy regimen, which succeeded on his non-dominant shoulder but failed on the contralateral dominant side. A surgical technique aimed at reducing the right shoulder capsule volume to gain stability was performed and described in detail in this paper. Patient was able to return to his normal daily activities, including sports, without new complaints. DISCUSSION The aim of surgery is to restore passive stability by reducing the shoulder capsular volume. Common surgical techniques for Multidirectional instability include an inferior capsular shift and open or arthroscopic capsular plication with variable outcomes have been proposed in the literature. CONCLUSION Surgical management should be individualized to address the anatomical cause of instability and should only be considered if conservative treatment with supervised physiotherapy fails. Using an arthroscopic grasper to apply appropriate capsule traction and tension while performing the plication and using an extra superior anchor contributed to attaining optimal capsular volume reduction.
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Affiliation(s)
- Waleed Albishi
- Department of Orthopedic Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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6
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Takenaga T, Yoshida M, Chan CK, Musahl V, Debski RE, Lin A. Direction of non-recoverable strain in the glenohumeral capsule following multiple anterior dislocations: Implications for anatomic Bankart repair. J Orthop Res 2023; 41:479-488. [PMID: 35615943 DOI: 10.1002/jor.25385] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/05/2022] [Accepted: 05/14/2022] [Indexed: 02/04/2023]
Abstract
The study aimed to analyze the direction of non-recoverable strain and determine the optimal direction for anatomic capsular plication within four sub-regions of the inferior glenohumeral capsule following multiple dislocations. Seven fresh-frozen cadaveric shoulders were dissected. A grid of strain markers was affixed to the inferior glenohumeral capsule. Each joint was mounted in a 6-degree-of-freedom robotic testing system and repeatedly dislocated in the anterior direction 10 times at 60° of abduction and 60° of external rotation of the glenohumeral joint. The 3D positions of the strain markers were compared before and after dislocations to define the non-recoverable strain. The strain map was divided into four sub-regions. The angles of deviation between each maximum principle strain vector and the anterior band of the inferior glenohumeral ligament (AB-IGHL) or posterior band of the IGHL (PB-IGHL) for the anterior and posterior regions of the capsule were determined. The mean direction of all strain vectors in each sub-region was categorized. The direction of the non-recoverable strain in the anterior-band and anterior-axillary-pouch sub-regions was categorized as parallel to the AB-IGHL, whereas the posterior-axillary-pouch and posterior-band sub-regions were mostly perpendicular to the PB-IGHL. Clinical Significance: Plication of the anteroinferior capsule parallel to the AB-IGHL may be preferred during arthroscopic Bankart repair to restore anatomy; posteroinferior capsular plication may also be necessary and best performed perpendicular to the PB-IGHL. The direction of the capsular injury remains the same irrespective of the number of dislocations. This study provides the scientific and quantitative rationale for an anatomic approach to capsular plication.
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Affiliation(s)
- Tetsuya Takenaga
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Masahito Yoshida
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Calvin K Chan
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Volker Musahl
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Richard E Debski
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Albert Lin
- Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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7
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Şahin K, Kendirci AŞ, Albayrak MO, Sayer G, Erşen A. Multidirectional instability of the shoulder: surgical techniques and clinical outcome. EFORT Open Rev 2022; 7:772-781. [PMID: 36475553 PMCID: PMC9780612 DOI: 10.1530/eor-22-0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Multidirectional instability of the shoulder has a complex pathoanatomy. It is characterized by a redundant glenohumeral capsule and increased joint volume. Subtle clinical presentation, unclear trauma history and multifactorial etiology poseses a great challenge for orthopedic surgeons in terms of diagnosis. Generally accepted therapeutic approach is conservative and the majority of patients achieve good results with rehabilitation. In patients who are symptomatic despite appropriate rehabilitation, surgical intervention may be considered. Good results have been obtained with open inferior capsular surgery, which has historically been performed in these patients. In recent years, advanced arthroscopic techniques have taken place in this field, and similar results compared to open surgery have been obtained with the less-invasive arthroscopic capsular plication procedure.
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Affiliation(s)
- Koray Şahin
- Bezmialem Vakif University, Department of Orthopedics and Traumatology, Istanbul, Turkey,Correspondence should be addressed to Koray Şahin;
| | - Alper Şükrü Kendirci
- Erciş Şehit Rıdvan Çevik State Hospital, Department of Orthopedics and Traumatology, Van, Turkey
| | - Muhammed Oğuzhan Albayrak
- Istanbul University Istanbul Faculty of Medicine, Department of Orthopedics and Traumatology, Istanbul, Turkey
| | - Gökhan Sayer
- Muş State Hospital, Department of Orthopedics and Traumatology, Muş, Turkey
| | - Ali Erşen
- Istanbul University Istanbul Faculty of Medicine, Department of Orthopedics and Traumatology, Istanbul, Turkey
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8
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Watson L, Pizzari T, Balster S, Lenssen R, Warby SA. Advances in the Non-Operative Management of Multidirectional Instability of the Glenohumeral Joint. J Clin Med 2022; 11:5140. [PMID: 36079068 PMCID: PMC9456769 DOI: 10.3390/jcm11175140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 11/16/2022] Open
Abstract
Multidirectional instability (MDI) of the glenohumeral joint refers to symptomatic subluxations or dislocations in more than one direction. The aetiology of MDI is multifactorial, which makes the classification of this condition challenging. A shoulder rehabilitation program is the initial recommended treatment for MDI, however available rehabilitation programs have varying levels of evidence to support their effectiveness. In 2016, we published the details of an evidence-based program for MDI that has been evaluated for efficacy in two single-group studies and a randomised controlled trial. In 2017, we published a clinical commentary on the aetiology, classification, and treatment of this condition. The aim of this paper is to provide an update on the components of these publications with a particular focus on new advances in the non-operative management of this condition.
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Affiliation(s)
- Lyn Watson
- Melbourne Shoulder Group, 305 High Street, Prahran, VIC 3181, Australia
| | - Tania Pizzari
- Department of Physiotherapy, Podiatry, Prosthetics and Orthotics, La Trobe University, Corner of Kingsbury Drive and Plenty Road Bundoora, Bundoora, VIC 2080, Australia
- Mill Park Physiotherapy, 22/1 Danaher Dr, South Morang, VIC 3752, Australia
| | - Simon Balster
- Melbourne Shoulder Group, 305 High Street, Prahran, VIC 3181, Australia
| | - Ross Lenssen
- Melbourne Shoulder Group, 305 High Street, Prahran, VIC 3181, Australia
| | - Sarah Ann Warby
- Melbourne Shoulder Group, 305 High Street, Prahran, VIC 3181, Australia
- Department of Physiotherapy, Podiatry, Prosthetics and Orthotics, La Trobe University, Corner of Kingsbury Drive and Plenty Road Bundoora, Bundoora, VIC 2080, Australia
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9
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靳 宝, 李 焱, 马 林, 周 兵, 唐 康. [Rebalancing theory of shoulder stability mechanism for the diseases related to the shoulder instability and dysfunction of motion]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2022; 36:380-385. [PMID: 35293182 PMCID: PMC8923926 DOI: 10.7507/1002-1892.202110075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 01/24/2023]
Abstract
Objective To introduce a new theory of shoulder stability mechanism, rebalancing theory, and clinical application of this new theory for the shoulder instability and dysfunction of motion. Methods Through extensive review of the literature related to shoulder instability and dysfunction of the motion in recent years, combined with our clinical practice experience, the internal relation between passive stability mechanism and dynamic stability mechanism were summarized. Results Rebalancing theory of shoulder stability mechanism is addressed, namely, when the shoulder stability mechanism is destructive, the stability of the shoulder can be restored by the rebalance between dynamic stability mechanism and passive stability mechanism. When dynamic stability is out of balance, dynamic stability can be restored by rebalancing the different parts of dynamic stability mechanism or to strengthen the passive stability mechanism. When passive stability mechanism is out of balance, passive stability can be restored by rebalancing the soft tissue and bone of the shoulder. Conclusion Rebalancing theory of shoulder stability mechanism could make a understanding the occurrence, development, and prognosis of shoulder instability and dysfunction from a comprehensive and dynamic view and guide the treatment effectively.
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Affiliation(s)
- 宝雍 靳
- 中国人民解放军陆军军医大学第一附属医院运动医学中心(重庆 445000)Department of Sports Medicine Center, the First Affiliated Hospital of the Army Military Medical University, Chongqing, 445000, P. R. China
| | - 焱 李
- 中国人民解放军陆军军医大学第一附属医院运动医学中心(重庆 445000)Department of Sports Medicine Center, the First Affiliated Hospital of the Army Military Medical University, Chongqing, 445000, P. R. China
| | - 林 马
- 中国人民解放军陆军军医大学第一附属医院运动医学中心(重庆 445000)Department of Sports Medicine Center, the First Affiliated Hospital of the Army Military Medical University, Chongqing, 445000, P. R. China
| | - 兵华 周
- 中国人民解放军陆军军医大学第一附属医院运动医学中心(重庆 445000)Department of Sports Medicine Center, the First Affiliated Hospital of the Army Military Medical University, Chongqing, 445000, P. R. China
| | - 康来 唐
- 中国人民解放军陆军军医大学第一附属医院运动医学中心(重庆 445000)Department of Sports Medicine Center, the First Affiliated Hospital of the Army Military Medical University, Chongqing, 445000, P. R. China
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10
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Celentano A, Porta M, Calvi M, Basile G, Aliprandi A, Genovese EA. Magnetic resonance arthrography in patients with multidirectional instability: could inferior capsulsar width be considered the cornerstone in the diagnosis of non-traumatic shoulder instability? Skeletal Radiol 2022; 51:2299-2305. [PMID: 35773419 PMCID: PMC9560919 DOI: 10.1007/s00256-022-04090-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/08/2022] [Accepted: 06/08/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To provide quantitative anatomical parameters in patients with and without non-traumatic multidirectional instability using MR arthrography (MR-a). MATERIALS AND METHODS One hundred and seventy-six MR-a performed from January 2020 to March 2021 were retrospectively evaluated. Patients were divided according to the presence of clinically diagnosed multidirectional shoulder instability (MDI). Each MR-a was performed immediately after intra-articular injection of 20 ml of gadolinium using the anterior approach. The width of the axillary recess, the width of the rotator interval, and the circumference of the glenoid were measured by three independent radiologists, choosing the average value of the measurements. The difference between the mean values of each of the three parameters between the two study groups was then assessed. RESULTS Thirty-seven patients were included in the study (20 in the MDI group, 17 in the control group). The mean axillary recess width in the MDI group was significantly greater than in the control group (t(33) = 3.15, p = .003); rotator interval width and glenoid circumference measurements were not significantly different (t(35) = 1.75, p = .08 and t(30) = 0,51, p = .6, respectively). CONCLUSIONS Inferior capsular redundancy may be an important predisposing factor in MDI, while glenoid circumference is not related to MDI. The relationship between the width of the rotator interval and shoulder instability remains debated.
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Affiliation(s)
- Angelica Celentano
- grid.18147.3b0000000121724807Department of Diagnostic and Interventional Radiology, Insubria University, Varese, Italy
| | - Marco Porta
- Department of Radiology, Istituti Clinici Zucchi, Monza, Italy
| | - Marco Calvi
- Department of Diagnostic and Interventional Radiology, ASST-Settelaghi, Ospedale di Circolo e Fondazione Macchi, 21100 Varese, Italy
| | - Giuseppe Basile
- Trauma Surgery IRCCS Orthopaedic Institute Galeazzi, Milan, Italy
| | | | - Eugenio Annibale Genovese
- grid.18147.3b0000000121724807Insubria University, Varese, 21100 Italy ,Clinical Medical Center - Columbus / Intermedica, Milan, 20149 Italy
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11
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Yellin JL, Fabricant PD, Anari JB, Neuwirth AL, Ganley TJ, Chauvin NA, Lawrence JT. Increased Glenoid Index as a Risk Factor for Pediatric and Adolescent Anterior Glenohumeral Dislocation: An MRI-Based, Case-Control Study. Orthop J Sports Med 2021; 9:2325967120986139. [PMID: 34250154 PMCID: PMC8239337 DOI: 10.1177/2325967120986139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/10/2020] [Indexed: 12/03/2022] Open
Abstract
Background: In adults, anterior glenohumeral instability has been associated with a tall
and narrow glenoid morphology, assessed using the glenoid index (GI; glenoid
height-to-width ratio) on magnetic resonance imaging (MRI). This
morphological association has not been assessed in children and
adolescents. Purpose/Hypothesis: To examine the association of GI and other MRI measurements of interest
supported in studies on adults with anterior glenohumeral dislocation in
patients aged ≤19 years. We hypothesized that these patients would have a
significantly greater GI (relatively taller and narrower glenoid morphology)
compared with healthy controls. Study Design: Case-control study; Level of evidence, 3. Methods: An institutional radiology database was queried over a 10-year period to
identify patients aged ≤19 years who had been diagnosed with
radiographically confirmed anterior shoulder dislocation and who underwent
glenohumeral magnetic resonance arthrography as well as those without
dislocation with normal shoulder arthrogram studies (controls). Patients
with bony Bankart lesions were excluded. The following glenohumeral
dimensions were measured on shoulder arthrogram: GI, glenoid version,
coracohumeral interval, and rotator interval width/depth. Comparative
analysis between the 2 groups was performed using the Student
t test for each variable, followed by receiver
operating characteristic (ROC) analysis to determine discriminative ability
when statistically significant. Results: Overall, 55 participants (33 male and 22 female patients; mean age, 15.4 ±
2.1 years) were enrolled; 22 patients were in included in the dislocator
group and 33 patients comprised the control group. The mean GI in the
dislocator group was significantly greater than the control group (1.55 ±
0.14 vs. 1.38 ± 0.08; P < .001). ROC analysis revealed
adequate discrimination of GI in predicting glenohumeral dislocation (area
under the curve = 0.88). A GI ≥1.45 was 83% sensitive and 79% specific for
predicting dislocation in the study cohort. Conclusion: Patients with anterior glenohumeral dislocation had increased GI (taller and
narrower glenoid morphology) than controls. This useful MRI measurement may
help identify patients at risk for primary or recurrent anterior
glenohumeral instability events and may therefore help with guiding
treatment and prevention.
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Affiliation(s)
- Joseph L Yellin
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Harvard Combined Orthopaedic Residency Program, Boston Children's Hospital/Massachusetts General Hospital/Brigham and Women's Hospital/Beth Israel Lahey Health, Boston, Massachusetts, USA
| | - Peter D Fabricant
- Division of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, and Department of Orthopaedic Surgery, Weill Cornell Medical College, New York, New York, USA
| | - Jason B Anari
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Alexander L Neuwirth
- Columbia University Irving Medical Center, Department of Orthopaedic Surgery, New York, New York, USA
| | - Theodore J Ganley
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nancy A Chauvin
- Department of Radiology, Hershey Children's Hospital and Penn State Health Milton S. Hershey Medical Center, Penn State College of Medicine, Philadelphia, PA, USA
| | - John T Lawrence
- Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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12
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White CC, Kothandaraman V, Lin J, Rao M, Greenhouse A, Barfield WR, Chapin R, Slone HS, Friedman RJ, Eichinger JK. Shoulder Position During Magnetic Resonance Arthrogram Significantly Affects Capsular Measurements. Arthroscopy 2021; 37:17-25. [PMID: 32956802 DOI: 10.1016/j.arthro.2020.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/03/2020] [Accepted: 09/09/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine whether change in shoulder position between internal rotation (IR) and external rotation (ER) during magnetic resonance arthrography (MRA) affects previously defined capsular measurements and to determine the utility of rotation in the diagnosis of instability. METHODS A retrospective study was conducted of patients who received a shoulder MRA with humeral IR and ER views. Patients with an arthroscopically confirmed diagnosis of instability and those with clinically stable shoulders, no history of instability, and no MRA findings of instability were identified and compared. Humeral rotation, glenoid retroversion, humeral head subluxation, capsular length, and capsular area using axial sequences of IR and ER views were recorded. Analysis compared IR, ER, and Δ capsular measurements between groups using independent t tests and univariate and multivariate regression. RESULTS Thirty-one subjects who were diagnosed with instability were included, along with 28 control subjects. Capsular length, capsular area, and humeral subluxations were significantly greater with ER compared with IR views (P < .001, P < .001, P < .001). Patients with instability displayed greater ER capsular length (P = .0006) and ER capsular area (P = .005) relative to controls. Multivariate logistic regression identified age, weight, sex, ER capsular length, and retroversion to be significant predictors of instability. ER capsular length independently predicts instability with 86% sensitivity and 84% specificity. Interobserver reliability using the intraclass correlation coefficient was rated good or excellent on all measurements. CONCLUSION Variance in humeral rotation during shoulder MRA significantly affects capsular measurements. Rotational views increase the utility of capsular measurements when assessing for instability, particularly capsular length and capsular area. The implementation of ER positioning enhances the ability to examine capsular changes of the shoulder joint and can assist in the diagnosis of instability. LEVEL OF EVIDENCE III, retrospective comparative study.
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Affiliation(s)
- Charles Cody White
- College of Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Venkatraman Kothandaraman
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Jackie Lin
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Meghana Rao
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Alyssa Greenhouse
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - William R Barfield
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Russell Chapin
- Department of Musculoskeletal Radiology, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Harris S Slone
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Richard J Friedman
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A
| | - Josef K Eichinger
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, South Carolina, U.S.A..
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13
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Spanhove V, Van Daele M, Van den Abeele A, Rombaut L, Castelein B, Calders P, Malfait F, Cools A, De Wandele I. Muscle activity and scapular kinematics in individuals with multidirectional shoulder instability: A systematic review. Ann Phys Rehabil Med 2020; 64:101457. [PMID: 33221471 DOI: 10.1016/j.rehab.2020.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 10/13/2020] [Accepted: 10/22/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Several studies reported the importance of glenohumeral and scapular muscle activity and scapular kinematics in multidirectional shoulder instability (MDI), yet a systematic overview is currently lacking. OBJECTIVE This systematic review evaluates and summarizes the evidence regarding muscle activity and shoulder kinematics in individuals with MDI compared to healthy controls. METHOD The electronic databases PubMed and Web of Science were searched in September 2020 with key words regarding MDI (population), muscle activity, and glenohumeral and scapular movement patterns (outcomes). All studies that compared muscle activity or scapular kinematics between shoulders with MDI and healthy shoulders were eligible for this review, except for case reports and case series. All articles were screened on the title and abstract, and remaining eligible articles were screened on full text. The risk of bias of included articles was assessed by a checklist for case-control data, as advised by the Cochrane collaboration. RESULTS After full text screening, 12 articles remained for inclusion and one study was obtained by hand search. According to the guidelines of the Dutch Institute for Healthcare Improvement, most studies were of moderate methodological quality. We found moderate evidence that MDI individuals show increased or prolonged activity of several rotator cuff muscles that control and centre the humeral head. Furthermore, we found evidence of decreased and/or shortened activity of muscles that move or accelerate the arm and shoulder girdle as well as increased and/or lengthened activity of muscles that decelerate the arm and shoulder girdle. The most consistent kinematic finding was that MDI individuals show significantly less upward rotation and more internal rotation of the scapula during elevation of the arm in the scapular plane as compared with controls. Finally, several studies also suggest that the humeral head demonstrates increased translations relative to the glenoid surface. CONCLUSION There is moderate evidence for altered muscle activity and altered humeral and scapular kinematics in MDI individuals as compared with controls.
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Affiliation(s)
- Valentien Spanhove
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium
| | - Matthias Van Daele
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium
| | - Aäron Van den Abeele
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium
| | - Lies Rombaut
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium; Centre for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Birgit Castelein
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium; Centre for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Patrick Calders
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium
| | - Fransiska Malfait
- Centre for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium
| | - Ann Cools
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium
| | - Inge De Wandele
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Corneel Heymanslaan 10, 0k5, 9000 Ghent, Belgium; Centre for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, 9000 Ghent, Belgium.
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14
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Park KJ, Jeong HS, Park JK, Cha JK, Kang SW. Evaluation of Inferior Capsular Laxity in Patients with Atraumatic Multidirectional Shoulder Instability with Magnetic Resonance Arthrography. Korean J Radiol 2019; 20:931-938. [PMID: 31132818 PMCID: PMC6536793 DOI: 10.3348/kjr.2018.0541] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 02/13/2019] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To compare inferior capsular redundancy by using magnetic resonance arthrography (MRA) images in patients with multidirectional instability (MDI) of the shoulder and control subjects without instability and thereby develop a screening method to identify the presence of shoulder MDI. MATERIALS AND METHODS The MRA images of patients with MDI of the shoulder (n = 65, 57 men, 8 women; mean age, 24.5 years; age range, 18-42 years) treated over an eight-year period were retrospectively reviewed; a control group (n = 65, 57 men, 8 women; mean age, 27.4 years; age range, 18-45 years) without instability was also selected. The inferior capsular redundancy was measured using a new method we named the glenocapsular (GC) ratio method. MRA images of both groups were randomly mixed together, and two orthopedic surgeon reviewers measured the cross-sectional areas (CSAs) and sagittal capsule-head ratios on oblique sagittal images, as well as the axial capsule-head ratios on axial images and GC ratios on oblique coronal images. RESULTS The CSAs and GC ratios were significantly higher in patients than in controls (both, p < 0.001); however, the sagittal capsule-head ratios and axial capsule-head ratios were not significantly different (p = 0.317, p = 0.053, respectively). In addition, GC ratios determined the presence of MDI more sensitively and specifically than did CSAs. A GC ratio of > 1.42 was found to be most suggestive of MDI of the shoulder, owing to its high sensitivity (92.3%) and specificity (89.2%). CONCLUSION GC ratio can be easily measured and used to accurately screen for MDI of the shoulder.
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Affiliation(s)
| | - Ho Seung Jeong
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Cheongju, Korea.
| | - Ji Kang Park
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Cheongju, Korea
| | - Jung Kwon Cha
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Cheongju, Korea
| | - Sang Woo Kang
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Cheongju, Korea
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15
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Sacks HA, Prabhakar P, Wessel LE, Hettler J, Strickland SM, Potter HG, Fufa DT. Generalized Joint Laxity in Orthopaedic Patients: Clinical Manifestations, Radiographic Correlates, and Management. J Bone Joint Surg Am 2019; 101:558-566. [PMID: 30893238 DOI: 10.2106/jbjs.18.00458] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hayley A Sacks
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Pooja Prabhakar
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Lauren E Wessel
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Jessica Hettler
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Sabrina M Strickland
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Hollis G Potter
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
| | - Duretti T Fufa
- Departments of Orthopaedic Surgery (H.A.S., P.P., L.E.W., S.M.S., and D.T.F.), Physical Therapy and Rehabilitation (J.H.), and Radiology and Imaging (H.G.P.), Hospital for Special Surgery, New York, NY
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16
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Multidirectional Instability of the Shoulder: Treatment Options and Considerations. Sports Med Arthrosc Rev 2018; 26:113-119. [PMID: 30059445 DOI: 10.1097/jsa.0000000000000199] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Multidirectional instability (MDI) is a debilitating condition that involves chronic subluxation or dislocation of the shoulder in >1 direction. Numerous proposed mechanisms of MDI exist, which occurs in the setting of redundant capsular tissue. Symptoms can range from recurrent dislocations or subluxations to vague aching pain that disrupts activities of daily living. Magnetic resonance imaging is often performed during evaluation of this condition, although magnetic resonance arthrography may provide more detailed images of the patulous capsule. In the absence of a well-defined traumatic cause, such as a labral tear, initial treatment for MDI is a structured rehabilitation program with exercises aimed at strengthening the rotator cuff and periscapular muscles to improve scapular kinematics. Patients with recalcitrant symptoms may benefit from surgical stabilization, including open capsular shift or arthroscopic capsular plication, aimed at decreasing capsular volume and improving stability.
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17
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Jun YC, Moon YL, Elsayed MI, Lim JH, Cha DH. Three-dimensional Capsular Volume Measurements in Multidirectional Shoulder Instability. Clin Shoulder Elb 2018; 21:134-137. [PMID: 33330166 PMCID: PMC7726391 DOI: 10.5397/cise.2018.21.3.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 06/27/2018] [Accepted: 07/27/2018] [Indexed: 11/25/2022] Open
Abstract
Background In a previous study undertaken to quantify capsular volume in rotator cuff interval or axillary pouch, significant differences were found between controls and patients with instability. However, the results obtained were derived from two-dimensional cross sectional areas. In our study, we sought correlation between three-dimensional (3D) capsular volumes, as measured by magnetic resonance arthrography (MRA), and multidirectional instability (MDI) of the shoulder. Methods The MRAs of 21 patients with MDI of the shoulder and 16 control cases with no instability were retrospectively reviewed. Capsular areas determined by MRA were translated into 3D volumes using 3D software Mimics ver. 16 (Materilise, Leuven, Belgium), and glenoid surface area was measured in axial and coronal MRA views. Then, the ratio between capsular volume and glenoid surface area was calculated, and evaluated with control group. Results The ratio between 3D capsular volume and glenoid surface area was significantly increased in the MDI group (3.59 ± 0.83 cm3/cm2) compared to the control group (2.53 ± 0.62 cm3/cm2) (p<0.01). Conclusions From these results, we could support that capsular volume enlargement play an important role in MDI of the shoulder using volume measurement.
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Affiliation(s)
- Yong Cheol Jun
- Department of Orthopedic Surgery, Chosun University Hospital, Gwangju, Korea
| | - Young Lae Moon
- Department of Orthopedic Surgery, Chosun University Hospital, Gwangju, Korea
| | - Moustafa I Elsayed
- Department of Orthopedic Surgery, Sohag University Hospital, Sohag Governorate, Egypt
| | - Jae Hwan Lim
- Department of Orthopedic Surgery, Chosun University Hospital, Gwangju, Korea
| | - Dong Hyuk Cha
- Department of Orthopedic Surgery, Chosun University Hospital, Gwangju, Korea
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18
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Multidirectional instability of the glenohumeral joint: Etiology, classification, assessment, and management. J Hand Ther 2018; 30:175-181. [PMID: 28576345 DOI: 10.1016/j.jht.2017.03.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/04/2017] [Accepted: 03/24/2017] [Indexed: 02/03/2023]
Abstract
Multidirectional instability of the shoulder is a type of glenohumeral joint shoulder instability. There are discrepancies in the definition and classification of this condition, which can make diagnosis and treatment selection challenging. Knowledge of contributing factors, the typical clinical presentation, and current best evidence for treatment options can assist in the diagnosis and appropriate treatment selection for this pathology. The purpose of this article is to present an overview of the current literature regarding the etiology, classification, assessment, and management of multidirectional instability of the glenohumeral joint.
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19
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Warby SA, Ford JJ, Hahne AJ, Watson L, Balster S, Lenssen R, Pizzari T. Comparison of 2 Exercise Rehabilitation Programs for Multidirectional Instability of the Glenohumeral Joint: A Randomized Controlled Trial. Am J Sports Med 2018; 46:87-97. [PMID: 29048942 DOI: 10.1177/0363546517734508] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The recommended initial treatment for multidirectional instability (MDI) of the shoulder is a rehabilitation program, yet there is very low-quality evidence to support this approach. Purpose/Hypothesis: The purpose was to compare the Watson MDI program and Rockwood Instability program among patients with nontraumatic, nonstructural MDI. The hypothesis was that the Watson MDI program would produce clinically and statistically superior outcomes over the Rockwood Instability program. STUDY DESIGN Randomized controlled trial; Level of evidence, 2. METHODS Forty-one participants with MDI were randomly allocated to the Watson MDI or Rockwood Instability program. Participants attended 12 weekly physiotherapy sessions for exercise prescription. Outcomes were assessed at baseline and 6, 12, and 24 weeks after randomization. Primary outcomes were the Melbourne Instability Shoulder Score (MISS) and the Western Ontario Shoulder Index (WOSI). Secondary outcomes included the Orebro Musculoskeletal Pain Questionnaire, pain, muscle strength, scapular upward rotation, scapular coordinates, global rating of change, satisfaction scales, limiting angle in abduction range, limiting factor in abduction range, and incidence of dislocation. Primary analysis was by intention to treat based on linear mixed models. RESULTS Between-group differences showed significant effects favoring the Watson program for the WOSI (effect size [ES], 11.1; 95% CI, 1.9-20.2; P = .018) and for the limiting factor in abduction (ES, 0.1; 95% CI, 0.0-1.6; P = .023) at 12 weeks, and for the WOSI (ES, 12.6; 95% CI, 3.4-21.9; P =. 008), MISS (ES, 15.4; 95% CI, 5.9-24.8; P = .002), and pain (ES, -2.0; CI: -2.3 to -0.7, P = .003) at 24 weeks. CONCLUSION For people with MDI, 12 sessions of the Watson MDI program were more effective than the Rockwood program at 12- and 24-week follow-up. Registration: ACTRN12613001240730 (Australian New Zealand Clinical Trials Registry).
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Affiliation(s)
- Sarah A Warby
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia.,LifeCare Prahran Sports Medicine Centre, Prahran, Australia.,Melbourne Orthopedic Group, Windsor, Australia
| | - Jon J Ford
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia
| | - Andrew J Hahne
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia
| | - Lyn Watson
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia.,LifeCare Prahran Sports Medicine Centre, Prahran, Australia.,Melbourne Orthopedic Group, Windsor, Australia
| | - Simon Balster
- LifeCare Prahran Sports Medicine Centre, Prahran, Australia.,Melbourne Orthopedic Group, Windsor, Australia
| | - Ross Lenssen
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia.,LifeCare Prahran Sports Medicine Centre, Prahran, Australia.,Melbourne Orthopedic Group, Windsor, Australia
| | - Tania Pizzari
- Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, Australia
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20
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Brown L, Rothermel S, Joshi R, Dhawan A. Recurrent Instability After Arthroscopic Bankart Reconstruction: A Systematic Review of Surgical Technical Factors. Arthroscopy 2017; 33:2081-2092. [PMID: 28866342 DOI: 10.1016/j.arthro.2017.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 05/04/2017] [Accepted: 06/20/2017] [Indexed: 02/02/2023]
Abstract
PURPOSE Recurrent instability remains of concern after arthroscopic Bankart reconstruction. We evaluated various technical factors including anchor design, anchor material, number of anchors used, and interval closure on risk of recurrent instability after arthroscopic Bankart reconstruction. METHODS A systematic review of MEDLINE and Cochrane databases was conducted, following PRISMA guidelines. Extracted data were recorded on a standardized form. Methodological index for non-randomized studies (MINORS) and Newcastle-Ottawa Scale (NOS) were used to assess study quality and risk bias. Because of study heterogeneity and low levels of evidence, meta-analysis was not possible. Pooled weighted means were calculated and individual study evaluation and comparisons (qualitative analysis) were performed for systematic review. RESULTS Of 2097 studies identified, 26 met criteria for systematic review. Pooled weighted means revealed 11.4% versus 15% recurrent instability with 3 or more suture anchors versus fewer than 3 anchors, 10.1% versus 7.8% with absorbable versus nonabsorbable suture anchors, respectively, and 8.0% versus 9.4% with knotless versus standard anchors, respectively. Interval closure did not qualitatively decrease recurrent instability or decrease range of motion. CONCLUSIONS Our systematic review reveals that despite individual study, and previous systematic reviews pointing to the contrary, the composite contemporary published literature would support no difference in the risk of recurrent instability after arthroscopic Bankart reconstruction with rotator interval closure, differing numbers of anchors used for the repair, use of knotless versus standard anchors, or use of bioabsorbable versus nonabsorbable anchors. We recommend surgeons focus on factors that have been shown to modify the risk factors after arthroscopic Bankart reconstruction, such as patient selection. LEVEL OF EVIDENCE Level IV, systematic review of Level III and IV studies.
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Affiliation(s)
- Landon Brown
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, U.S.A
| | - Shane Rothermel
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, U.S.A
| | - Rajat Joshi
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, U.S.A
| | - Aman Dhawan
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, U.S.A..
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Ruiz Ibán MA, Díaz Heredia J, García Navlet M, Serrano F, Santos Oliete M. Multidirectional Shoulder Instability: Treatment. Open Orthop J 2017; 11:812-825. [PMID: 28979595 PMCID: PMC5611704 DOI: 10.2174/1874325001711010812] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 10/28/2016] [Accepted: 10/28/2016] [Indexed: 11/24/2022] Open
Abstract
Background: The treatment of multidirectional instability of the shoulder is complex. The surgeon should have a clear understanding of the role of hiperlaxity, anatomical variations, muscle misbalance and possible traumatic incidents in each patient. Methods: A review of the relevant literature was performed including indexed journals in English and Spanish. The review was focused in both surgical and conservative management of multidirectional shoulder instability. Results: Most patients with multidirectional instability will be best served with a period of conservative management with physical therapy; this should focus in restoring strength and balance of the dynamic stabilizers of the shoulder. The presence of a significant traumatic incident, anatomic alterations and psychological problems are widely considered to be poor prognostic factors for conservative treatment. Patients who do not show a favorable response after 3 months of conservative treatment seem to get no benefit from further physical therapy. When conservative treatment fails, a surgical intervention is warranted. Both open capsular shift and arthroscopic capsular plication are considered to be the treatment of choice in these patients and have similar outcomes. Thermal or laser capsuloraphy is no longer recommended. Conclusion: Multidirectional instability is a complex problem. Conservative management with focus on strengthening and balancing of the dynamic shoulder stabilizers is the first alternative. Some patients will fare poorly and require either open or arthroscopic capsular plication.
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Affiliation(s)
| | - Jorge Díaz Heredia
- Hospital Universitario Ramon y Cajal, Cta Colmenar km9, 100, Madrid, 28046, Spain
| | - Miguel García Navlet
- Hospital Asepeyo Coslada, Calle de Joaquín de Cárdenas, 2, 28823 Coslada, Madrid, Spain
| | - Francisco Serrano
- Hospital Asepeyo Coslada, Calle de Joaquín de Cárdenas, 2, 28823 Coslada, Madrid, Spain
| | - María Santos Oliete
- Hospital Universitario Ramon y Cajal, Cta Colmenar km9, 100, Madrid, 28046, Spain
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22
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Navlet MG, Asenjo-Gismero CV. Multidirectional Instability: Natural History and Evaluation. Open Orthop J 2017; 11:861-874. [PMID: 29081865 PMCID: PMC5633721 DOI: 10.2174/1874325001711010861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 10/26/2016] [Accepted: 10/28/2016] [Indexed: 11/22/2022] Open
Abstract
Background: Multidirectional instability (MDI) represents a great challenge to the orthopedic surgeon. When treating these patients we must be aware that instability refers to a symptomatic situation, thus multidirectional instability is defined as symptomatic involuntary instability in two or more directions, and should be clearly differentiated from asymptomatic hyperlaxity. It may be associated with hyperlaxity, either congenital or acquired following repetitive stress, but also may be present without hyperlaxity, which is rare. Methods: We searched in the online data bases and reviewed the relevant published literature available. Results: Many differences can be seen in the current literature when identifying these patients, unclear definitions and criteria to be included in this patient group are common. Conclusion: Understanding the complex shoulder biomechanics as well as being aware of the typical clinical features and the key examination signs, which we review in this article, is of paramount importance in order to identify and classify these patients, allowing the best treatment option to be offered to each patient.
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Affiliation(s)
- Miguel García Navlet
- Shoulder and Elbow Unit, Upper extremity department at ASEPEYO Hospital Coslada, Madrid, Spain
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23
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Diagnosis and treatment of anteroinferior capsular redundancy associated with anterior shoulder instability using an open Latarjet procedure and capsulorrhaphy. Knee Surg Sports Traumatol Arthrosc 2016; 24:3756-3764. [PMID: 26003480 DOI: 10.1007/s00167-015-3621-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 04/27/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE There is a paucity of data detailing management of anterior capsular redundancy (ACR) when using the Latarjet procedure for unidirectional instability. This study aimed to describe the surgical management and to assess the clinical profile of patients presenting with anterior capsular redundancy [ACR(+)] with anterior shoulder instability. METHODS Seventy-seven patients who had a Latarjet procedure were followed for a 55-month period. Per-operative ACR was assessed during surgery. ACR was considered present if the inferior capsular flap of a Neer T-shaft capsulorrhaphy was able to cover the superior capsular flap with the arm in the neutral position. Patients with ACR(+) received an additional Neer capsulorrhaphy, while patients with ACR(-) did not. This per-operative finding was correlated with demographics, clinical, radiological pre-operative data and surgical outcome. RESULTS Patients presenting with a per-operative ACR(+) were significantly associated with a sulcus sign (P < 0.001), a Beighton score >4 (P < 0.01), a low-energy instability history (P < 0.05), a predominant history of subluxations (P < 0.05), fewer Hill-Sachs lesion (P < 0.05) and a female gender (P < 0.05), but not significantly with external rotation >85°. Open standard Latarjet procedures with Neer capsulorrhaphy in ACR(+) patients showed excellent or good results and stability rate of 95 %. All patients except four who presented with a new dislocation after surgery were satisfied with their outcome. Thirteen patients (16 %) had a persistent apprehension sign at the last follow-up. ACR(+) and ACR(-) groups did not show significant difference in the mean values of Rowe, Walch-Duplay and Constant-Murley scores. CONCLUSION ACR correlated with a sulcus sign, Beighton score and instability history. In anterior shoulder instability associated with ACR, the Latarjet procedure with a Neer capsulorrhaphy appears a satisfactory treatment alternative to arthroscopic or open capsular shift. It decreased apprehension in comparison with Latarjet procedures without capsular repair. LEVEL OF EVIDENCE Cases series, treatment study, Level IV.
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Abstract
Imaging of the shoulder forms an important adjunct in clinical decision making in patients with shoulder instability. The typical lesions related with classic anterior and anteroinferior shoulder dislocation are an anteroinferior labral avulsion with or without bony fragment of bone loss – a (bony) Bankart lesion – and a posterolateral humeral head impaction fracture – the Hill-Sachs lesions. These are relatively straightforward to identify on imaging, although normal variants of the inferior labrum and variants of labral damage may cause confusion. Other capsuloligamentous lesions, often associated with less typical types of instability, are much more difficult to identify correctly on imaging, as they occur in the anterosuperior part of the glenohumeral joint with its many normal variants or because they result in more subtle, and therefore easily overlooked, changes in morphology or signal intensity. This paper aims at describing the appearance of the normal and pathologic glenohumeral joint related to shoulder instability. Ample reference will be given as to why identification of abnormalities, whether normal or pathologic, is important to the surgeon facing a treatment decision.
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Warby SA, Ford JJ, Hahne AJ, Watson L, Balster S, Lenssen R, Pizzari T. Effect of exercise-based management on multidirectional instability of the glenohumeral joint: a pilot randomised controlled trial protocol. BMJ Open 2016; 6:e013083. [PMID: 27619831 PMCID: PMC5030545 DOI: 10.1136/bmjopen-2016-013083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 07/26/2016] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION The most commonly recommended treatment for multidirectional instability (MDI) of the shoulder is exercise. Despite this recommendation, there is limited evidence to support the effectiveness of exercise. The aim of this paper is to describe a pilot randomised controlled trial comparing the effectiveness of 2 exercise programmes on outcomes of participants with MDI. METHODS AND ANALYSIS Consenting participants between 12 and 35 years, with non-traumatic MDI will be randomly allocated to participate in either the Rockwood Instability programme or the Watson MDI programme. Both programmes involve 1 consultation per week for 12 weeks with a physiotherapist to prescribe and progress a home exercise programme. Outcomes will be assessed at baseline, 6, 12, 24 and 52 weeks. Primary outcome measures include the Melbourne Instability Shoulder Score and Western Ontario Shoulder Index. Secondary outcomes include scapular coordinates, scapular upward rotation angles, muscle strength, symptomatic onset, limiting factor and angle of limiting factor in abduction range, incidence of complete glenohumeral joint dislocation, global rating of change, satisfaction scores, the Orebro Musculoskeletal Pain Questionnaire, adverse events and compliance with the home exercise programme. Data will be analysed on intention-to-treat principles and a per protocol basis. DISCUSSION This trial will evaluate whether there are differences in outcomes between the Rockwood and the Watson MDI programmes for participants with MDI. ETHICS AND DISSEMINATION Participant confidentiality will be maintained with publication of results. Ethics approval: Faculty of Health Sciences (FHEC12/201). TRIAL REGISTRATION NUMBER ACTRN12613001240730; Pre-results.
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Affiliation(s)
- Sarah A Warby
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
- LifeCare Prahran Sports Medicine Centre, Prahran, Victoria, Australia
| | - Jon J Ford
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
| | - Andrew J Hahne
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
| | - Lyn Watson
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
- LifeCare Prahran Sports Medicine Centre, Prahran, Victoria, Australia
| | - Simon Balster
- LifeCare Prahran Sports Medicine Centre, Prahran, Victoria, Australia
- Melbourne Orthopedic Group, Melbourne, Victoria, Australia
| | - Ross Lenssen
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
- LifeCare Prahran Sports Medicine Centre, Prahran, Victoria, Australia
- Melbourne Orthopedic Group, Melbourne, Victoria, Australia
| | - Tania Pizzari
- Department of Rehabilitation, Nutrition and Sport, La Trobe University, Bundoora, Victoria, Australia
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El-Liethy N, Kamal H, Elsayed RF. Role of conventional MRI and MR arthrography in evaluating shoulder joint capsulolabral-ligamentous injuries in athletic versus non-athletic population. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2016. [DOI: 10.1016/j.ejrnm.2016.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Lim CO, Park KJ, Cho BK, Kim YM, Chun KA. A new screening method for multidirectional shoulder instability on magnetic resonance arthrography: labro-capsular distance. Skeletal Radiol 2016; 45:921-7. [PMID: 26992912 DOI: 10.1007/s00256-016-2364-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 01/31/2016] [Accepted: 02/29/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To compare the capsular dimension as measured on magnetic resonance arthrography (MRA) between patients with multidirectional instability (MDI) of the shoulder and control subjects without instability. Ultimately, we aimed to develop an easy and reliable new screening method to assess MDI of the shoulder using MRA. MATERIALS AND METHODS MRA images of patients with MDI of the shoulder (n = 25) during a 6-year period (February 2010 to May 2015) were retrospectively reviewed. A control group (n = 26) without instability was also identified. The capsular area was measured using a new screening method we termed labro-capsular (LC) distance. MRA images of the two groups were randomly mixed, and two orthopedic surgeon reviewers recorded anterior, posterior, and inferior LC distance measurements on axial and coronal images using a mid-glenoid cut. RESULTS The inferior LC distance increased significantly in the patient group versus control group (P < 0.001), but there were no statistically significant differences in the anterior (P = 0.1165) and posterior (P = 0.5229) LC distances. An inferior LC distance >16.88 mm is most suggestive of MDI of the shoulder because of its high sensitivity (76 %) and specificity (96 %). CONCLUSION The inferior LC distance can be easily and quickly measured and used as an effective clinical screening method for atraumatic MDI of the shoulder.
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Affiliation(s)
- Chae-Ouk Lim
- Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, 62, Gaesin-Dong, Cheongju, Chungbuk, 360-711, Republic of Korea
| | - Kyoung-Jin Park
- Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, 62, Gaesin-Dong, Cheongju, Chungbuk, 360-711, Republic of Korea.
| | - Byung-Ki Cho
- Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, 62, Gaesin-Dong, Cheongju, Chungbuk, 360-711, Republic of Korea
| | - Yong-Min Kim
- Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, 62, Gaesin-Dong, Cheongju, Chungbuk, 360-711, Republic of Korea
| | - Kyung-Ah Chun
- Department of Diagnostic Radiology, College of Medicine, Catholic Kwandong University, Incheon, Republic of Korea
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Sodl JF, McGarry MH, Campbell ST, Tibone JE, Lee TQ. Biomechanical effects of anterior capsular plication and rotator interval closure in simulated anterior shoulder instability. Knee Surg Sports Traumatol Arthrosc 2016; 24:365-73. [PMID: 24509881 DOI: 10.1007/s00167-014-2878-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 01/24/2014] [Indexed: 12/22/2022]
Abstract
PURPOSE The purpose of this study was to determine the effect of a stepwise arthroscopic anterior plication and arthroscopic-equivalent rotator interval (RI) closure on glenohumeral range of motion, kinematics, and translation in the setting of anterior instability. METHODS Six cadaveric shoulders were stretched to 10 % beyond maximum external rotation (ER) to create an anterior shoulder instability model. Range of motion, kinematics, and glenohumeral translations were recorded for the following conditions: (1) intact, (2) stretched, (3) after anterior capsular plication, and (4) after RI closure. RESULTS The total range of motion after capsular stretching increased significantly in the 60° abduction position (p = 0.037). Average ER and total rotation were significantly decreased from the intact and stretched conditions by both repair conditions at 60° and 0° of glenohumeral abduction (p < 0.05), with no significant difference between plication and additional RI closure. At 0° abduction and 0° ER, glenohumeral translation decreased significantly from the stretched condition after RI closure with 10 and 15 N anterior and 10 N posterior loads (p < 0.05). At 30° ER, translation after RI closure was significantly less than both the intact and stretched conditions with 10 N anterior loads (p = 0.009; p = 0.004). These changes in translational stability were not seen with plication alone. CONCLUSIONS Anterior capsular plication reduced glenohumeral range of motion back to the intact state, and often tighter. RI closure did not contribute significantly to the reduction in the range of motion, but had implications regarding glenohumeral translation. Caution should be taken when performing anterior plication and combined repairs to avoid overtightening. Intraoperative translations could be useful when debating RI closure in patients with unidirectional anterior glenohumeral instability.
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Affiliation(s)
- Jeffrey F Sodl
- Orthopaedic Biomechanics Laboratory, VA Long Beach Healthcare System (09/151), 5901 East 7th. Street, Long Beach, CA, 90822, USA.,Department of Orthopedic Surgery and Sports Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michelle H McGarry
- Orthopaedic Biomechanics Laboratory, VA Long Beach Healthcare System (09/151), 5901 East 7th. Street, Long Beach, CA, 90822, USA
| | - Sean T Campbell
- Orthopaedic Biomechanics Laboratory, VA Long Beach Healthcare System (09/151), 5901 East 7th. Street, Long Beach, CA, 90822, USA
| | - James E Tibone
- Department of Orthopedic Surgery and Sports Medicine, University of Southern California, Los Angeles, CA, USA
| | - Thay Q Lee
- Orthopaedic Biomechanics Laboratory, VA Long Beach Healthcare System (09/151), 5901 East 7th. Street, Long Beach, CA, 90822, USA. .,Department of Orthopaedic Surgery, University of California, Irvine, Irvine, CA, USA. .,Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.
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Frank RM, Taylor D, Verma NN, Romeo AA, Mologne TS, Provencher MT. The Rotator Interval of the Shoulder: Implications in the Treatment of Shoulder Instability. Orthop J Sports Med 2015; 3:2325967115621494. [PMID: 26779554 PMCID: PMC4710125 DOI: 10.1177/2325967115621494] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Biomechanical studies have shown that repair or plication of rotator interval (RI) ligamentous and capsular structures decreases glenohumeral joint laxity in various directions. Clinical outcomes studies have reported successful outcomes after repair or plication of these structures in patients undergoing shoulder stabilization procedures. Recent studies describing arthroscopic techniques to address these structures have intensified the debate over the potential benefit of these procedures as well as highlighted the differences between open and arthroscopic RI procedures. The purposes of this study were to review the structures of the RI and their contribution to shoulder instability, to discuss the biomechanical and clinical effects of repair or plication of rotator interval structures, and to describe the various surgical techniques used for these procedures and outcomes.
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Affiliation(s)
- Rachel M Frank
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Dean Taylor
- Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA
| | - Nikhil N Verma
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Anthony A Romeo
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Matthew T Provencher
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
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Multidirektionale Schulterinstabilität. ARTHROSKOPIE 2015. [DOI: 10.1007/s00142-015-0045-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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MR arthrography including abduction and external rotation images in the assessment of atraumatic multidirectional instability of the shoulder. Eur Radiol 2014; 24:1376-85. [PMID: 24623367 DOI: 10.1007/s00330-014-3133-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 01/25/2014] [Accepted: 02/17/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To evaluate diagnostic signs and measurements in the assessment of capsular redundancy in atraumatic multidirectional instability (MDI) of the shoulder on MR arthrography (MR-A) including abduction/external rotation (ABER) images. METHODS Twenty-one MR-A including ABER position of 20 patients with clinically diagnosed MDI and 17 patients without instability were assessed by three radiologists. On ABER images, presence of a layer of contrast between the humeral head (HH) and the anteroinferior glenohumeral ligament (AIGHL) (crescent sign) and a triangular-shaped space between the HH, AIGHL and glenoid (triangle sign) were evaluated; centring of the HH was measured. Anterosuperior herniation of the rotator interval (RI) capsule and glenoid version were determined on standard imaging planes. RESULTS The crescent sign had a sensitivity of 57 %/62 %/48 % (observers 1/2/3) and specificity of 100 %/100 %/94 % in the diagnosis of MDI. The triangle sign had a sensitivity of 48 %/57 %/48 % and specificity of 94 %/94 %/100 %. The combination of both signs had a sensitivity of 86 %/90 %/81 % and specificity of 94 %/94 %/94 %. A positive triangle sign was significantly associated with decentring of the HH. Measurements of RI herniation, RI width and glenoid were not significantly different between both groups. CONCLUSIONS Combined assessment of redundancy signs on ABER position MR-A allows for accurate differentiation between patients with atraumatic MDI and patients with clinically stable shoulders; measurements on standard imaging planes appear inappropriate. KEY POINTS MR arthrography has the possibility to accurately identify patients with atraumatic MDI. Imaging of the shoulder in abduction and external rotation provides additive information. Capsular enlargement of the shoulder can be diagnosed on MR arthrography.
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Abstract
Historically, posterior shoulder instability has been a challenging problem for contact athletes and orthopedic surgeons alike. A complete understanding of the normal shoulder anatomy and biomechanics and the pathoanatomy responsible for the instability is necessary for a successful clinical outcome. In addition, the surgeon must be familiar with the diagnostic imaging and physical examination maneuvers required for the correct diagnosis without missing any other concurrent abnormalities. This understanding will allow orthopedists to plan and execute the appropriate management, whether this may involve conservative or surgical intervention. The goal should always be to correct the abnormality and have the patient return to play with full strength and no recurrent instability.
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