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Croci E, Hess H, Genter J, Baum C, Kovacs BK, Nüesch C, Baumgartner D, Gerber K, Müller AM, Mündermann A. Severity of rotator cuff disorders and additional load affect fluoroscopy-based shoulder kinematics during arm abduction. J Orthop Traumatol 2024; 25:30. [PMID: 38850466 PMCID: PMC11162404 DOI: 10.1186/s10195-024-00774-2] [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: 12/19/2023] [Accepted: 05/25/2024] [Indexed: 06/10/2024] Open
Abstract
BACKGROUND Rotator cuff disorders, whether symptomatic or asymptomatic, may result in abnormal shoulder kinematics (scapular rotation and glenohumeral translation). This study aimed to investigate the effect of rotator cuff tears on in vivo shoulder kinematics during a 30° loaded abduction test using single-plane fluoroscopy. MATERIALS AND METHODS In total, 25 younger controls, 25 older controls and 25 patients with unilateral symptomatic rotator cuff tears participated in this study. Both shoulders of each participant were analysed and grouped on the basis of magnetic resonance imaging into healthy, rotator cuff tendinopathy, asymptomatic and symptomatic rotator cuff tears. All participants performed a bilateral 30° arm abduction and adduction movement in the scapular plane with handheld weights (0, 2 and 4 kg) during fluoroscopy acquisition. The range of upward-downward scapular rotation and superior-inferior glenohumeral translation were measured and analysed during abduction and adduction using a linear mixed model (loads, shoulder types) with random effects (shoulder ID). RESULTS Scapular rotation was greater in shoulders with rotator cuff tendinopathy and asymptomatic rotator cuff tears than in healthy shoulders. Additional load increased upward during abduction and downward during adduction scapular rotation (P < 0.001 in all groups but rotator cuff tendinopathy). In healthy shoulders, upward scapular rotation during 30° abduction increased from 2.3° with 0-kg load to 4.1° with 4-kg load and on shoulders with symptomatic rotator cuff tears from 3.6° with 0-kg load to 6.5° with 4-kg load. Glenohumeral translation was influenced by the handheld weights only in shoulders with rotator cuff tendinopathy (P ≤ 0.020). Overall, superior glenohumeral translation during 30° abduction was approximately 1.0 mm with all loads. CONCLUSIONS The results of glenohumeral translation comparable to control but greater scapular rotations during 30° abduction in the scapular plane in rotator cuff tears indicate that the scapula compensates for rotator cuff deficiency by rotating. Further analysis of load-dependent joint stability is needed to better understand glenohumeral and scapula motion. LEVEL OF EVIDENCE Level 2. TRIAL REGISTRATION Ethical approval was obtained from the regional ethics committee (Ethics Committee Northwest Switzerland EKNZ 2021-00182), and the study was registered at clinicaltrials.gov on 29 March 2021 (trial registration number NCT04819724, https://clinicaltrials.gov/ct2/show/NCT04819724 ).
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Affiliation(s)
- Eleonora Croci
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland.
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland.
| | - Hanspeter Hess
- School for Biomedical and Precision Engineering, University of Bern, Bern, Switzerland
| | - Jeremy Genter
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
- IMES Institute of Mechanical Systems, Zurich University of Applied Sciences, Winterthur, Switzerland
| | - Cornelia Baum
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
- Research and Development, Shoulder and Elbow Surgery, Schulthess Klinik Zurich, Zurich, Switzerland
| | | | - Corina Nüesch
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
- Department of Spine Surgery, University Hospital Basel, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Daniel Baumgartner
- IMES Institute of Mechanical Systems, Zurich University of Applied Sciences, Winterthur, Switzerland
| | - Kate Gerber
- School for Biomedical and Precision Engineering, University of Bern, Bern, Switzerland
| | - Andreas Marc Müller
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
| | - Annegret Mündermann
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
- Department of Spine Surgery, University Hospital Basel, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
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Ingoe H, Italia K, Gilliland L, Kang HW, Karel M, Maharaj J, Cutbush K, Gupta A. The Use of Glenoid Structural Allografts for Glenoid Bone Defects in Reverse Shoulder Arthroplasty. J Clin Med 2024; 13:2008. [PMID: 38610773 PMCID: PMC11012575 DOI: 10.3390/jcm13072008] [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: 02/26/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Background: The use of reverse shoulder arthroplasty as a primary and revision implant is increasing. Advances in implant design and preoperative surgical planning allow the management of complex glenoid defects. As the demand for treating severe bone loss increases, custom allograft composites are needed to match the premorbid anatomy. Baseplate composite structural allografts are used in patients with eccentric and centric defects to restore the glenoid joint line. Preserving bone stock is important in younger patients where a revision surgery is expected. The aim of this article is to present the assessment, planning, and indications of femoral head allografting for bony defects of the glenoid. Methods: The preoperative surgical planning and the surgical technique to execute the plan with a baseplate composite graft are detailed. The preliminary clinical and radiological results of 29 shoulders which have undergone this graft planning and surgical technique are discussed. Clinical outcomes included visual analogue score of pain (VAS), American Shoulder and Elbow Surgeons score (ASES), Constant-Murley score (CS), satisfaction before and after operation, and active range of motion. Radiological outcomes included graft healing and presence of osteolysis or loosening. Results: The use of composite grafts in this series has shown excellent clinical outcomes, with an overall graft complication rate in complex bone loss cases of 8%. Conclusion: Femoral head structural allografting is a valid and viable surgical option for glenoid bone defects in reverse shoulder arthroplasty.
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Affiliation(s)
- Helen Ingoe
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
| | - Kristine Italia
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
- Akunah, Brisbane, QLD 4120, Australia
| | - Luke Gilliland
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
- Akunah, Brisbane, QLD 4120, Australia
| | - Hean Wu Kang
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
| | - Mirek Karel
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
| | - Jashint Maharaj
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
| | - Kenneth Cutbush
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
- School of Medicine, University of Queensland, Brisbane, QLD 4072, Australia
| | - Ashish Gupta
- Queensland Unit for Advanced Shoulder Research (QUASR), Queensland University of Technology, Brisbane, QLD 4000, Australia; (H.I.); (K.I.); (L.G.); (H.W.K.); (M.K.); (J.M.); (K.C.)
- Akunah, Brisbane, QLD 4120, Australia
- Queensland Orthopaedic Clinic, Greenslopes Private Hospital, Brisbane, QLD 4000, Australia
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Saraglis G, Singh H, Charfare Z, Olujinmi GJ, Devecseri G, Agbaje A, Malal JG. Mid-term Results Following Reverse Shoulder Arthroplasty and the Role of Navigation in the Management of Glenoid Bone Loss. Cureus 2024; 16:e54633. [PMID: 38524053 PMCID: PMC10959506 DOI: 10.7759/cureus.54633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2024] [Indexed: 03/26/2024] Open
Abstract
Background Inaccurate positioning of the glenoid component has been well described as the most common cause of early failure following a reverse shoulder arthroplasty (RSA). Among the latest developments in operative technique, three-dimensional preoperative planning and navigation intraoperative systems have been developed to improve the accuracy of the baseplate positioning during RSA. The primary purpose of this retrospective analysis was to investigate the mid-term results of patients who underwent an elective RSA or for acute highly comminuted proximal humerus fractures. The secondary goal was to investigate the role of navigation in the execution of preoperative planning, especially in the management of glenoid bone loss. Methodology In total, 101 cases were included in this study. Patients were divided into the following two groups: 88 cases of RSA performed without the use of navigation (conventional RSA) and 13 cases performed using intraoperative navigation (navigated RSA). For all patients included in the study, preoperative planning software was employed. Patient demographics, gender, past medical history, indication of procedure, operated site, type of glenoid component used, length of baseplate screws, and clinical assessment scores (Oxford Shoulder Score, OSS) were reported for all patients. Cases of revision shoulder arthroplasty were excluded from this study. Results The postoperative clinical assessment of patients revealed that following RSA, all patients improved significantly with a consistently upward trend of the OSS noted for both groups (conventional and navigated RSA) throughout the postoperative assessment. Despite no statistically significant difference detected, the clinical scores of the navigated RSA group outperformed those of the conventional RSA group in the postoperative period. A higher incidence of augmented baseplate use was noted in the navigated RSA group than in the conventional group (23.07% vs. 5.68%, p < 0.001). Conclusions Our results indicate that the use of intraoperative navigation appears to be a valuable tool in preoperative planning, providing accurate positioning of the baseplate, a better understanding of the glenoid anatomy, and real-time monitoring of the length and direction of the baseplate screws. It is difficult to conclude if the use of navigation leads to superior clinical outcomes, and the cost-effectiveness of its use needs to be further analyzed. Prospective randomized trials are required to assess the cost-effectiveness of routine use of navigation in RSA.
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Affiliation(s)
- Georgios Saraglis
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
| | - Hamdip Singh
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
| | - Zain Charfare
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
| | | | - Gertrud Devecseri
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
| | - Adeniyi Agbaje
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
| | - Joby George Malal
- Orthopaedics and Trauma, Bedfordshire Hospitals NHS Foundation Trust, Bedford, GBR
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Franceschetti E, Giovannetti de Sanctis E, Gregori P, Paciotti M, Palumbo A, Franceschi F. Angled BIO-RSA leads to better inclination and clinical outcomes compared to Standard BIO-RSA and eccentric reaming: A comparative study. Shoulder Elbow 2023; 15:35-42. [PMID: 37974648 PMCID: PMC10649506 DOI: 10.1177/17585732211067156] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/20/2021] [Accepted: 11/10/2021] [Indexed: 11/19/2023]
Abstract
Background Two surgical techniques were compared : Standard BIO-RSA, performed with a glenoid eccentric reaming along with a cylindric bone graft augmentation vs. the Angled BIO-RSA, performed with a glenoid concentric reaming and a defect correction with an angled bone graft. Methods Patients undergoing RSA from January 2016 to April 2019, with one of the two techniques being performed, were retrospectively reviewed. Glenoids were classified according to Favard. Clinical (Constant-Murley, VAS and ROM) and radiographic (superior tilt correction) data were collected pre-operatively and at 12 months post-operatively. Results 141 shoulders were included. Angled BIO-RSA group showed statistically significant better outcomes in terms of forward flexion (149.9° Vs 139.3°) and abduction (136.4° Vs 126.7°). The use of an Angled BIO-RSA showed a statistically significant better superior tilt correction (1.252° Vs 4.09°). Angled BIO-RSA, leads to a better inclination correction and a mean postoperative tilt value inferior to 5° in E1 and E3 differently from standard BIO-RSA. Discussion Both techniques were able to correct glenoid superior inclination with excellent postoperative short-term results. However, angled BIO-RSA technique appears to be more effective in ensuring a correct inclination of the prosthetic glenoid component with better clinical outcomes.
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Affiliation(s)
- Edoardo Franceschetti
- Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Italy
| | | | - Pietro Gregori
- Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Italy
| | - Michele Paciotti
- Department of Orthopaedic and Trauma Surgery, Campus Biomedico University of Rome, Rome, Italy
| | - Alessio Palumbo
- Department of Orthopaedic and Trauma Surgery, San Pietro Fatebenefratelli Hospital, Rome, Italy
| | - Francesco Franceschi
- UniCamillus-Saint Camillus International University of Health Sciences, Rome, Italy
- Department of Orthopaedic and Trauma Surgery, San Pietro Fatebenefratelli Hospital, Rome, Italy
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5
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Merolla G, Giorgini A, Bonfatti R, Micheloni GM, Negri A, Catani F, Tarallo L, Paladini P, Porcellini G. BIO-RSA vs. metal-augmented baseplate in shoulder osteoarthritis with multiplanar glenoid deformity: a comparative study of radiographic findings and patient outcomes. J Shoulder Elbow Surg 2023; 32:2264-2275. [PMID: 37263484 DOI: 10.1016/j.jse.2023.04.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND Reverse shoulder arthroplasty (RSA) requiring extensive reaming to address severe glenoid bone loss increases the risk of glenoid medialization and baseplate failure. We hypothesized that (1) metal-augmented baseplate prevents the medialization of the joint line and preserves glenoid bone stock similarly to bony increased-offset (BIO)-RSA and (2) bone graft viability and healing in BIO-RSA patients become compromised over time. MATERIALS AND METHODS Eighty-one patients (83 shoulders) underwent glenoid lateralization with bone (BIO-RSA group, 44) or metal-augmented baseplate (metallic increased-offset [MIO]-RSA group, 39) and a minimum follow-up of 24 months were included. The orientation and direction of glenoid erosion was identified and recorded using computerized 3D planning. Active range of motion, and the Western Ontario Osteoarthritis of the Shoulder (WOOS) index were assessed before arthroplasty and at the last follow-up visits. Radiographic changes around the glenoid and humeral components were assessed. Healing and thickness of bone graft were evaluated by predefined criteria. Postoperative global glenoid inclination (β angle) and retroversion were also measured. RESULTS Delta scores of active anterior elevation were higher in the MIO-RSA group (P = .027). The differences in the other planes of shoulder motion and in WOOS index scores between the groups were not significant. Preoperative glenoid retroversion was higher in BIO-RSA patients, and glenoid inclination was similar in both groups. Type B2 and B3 glenoids had a posterior-central (91%) and posterior-superior (90%) erosion with a mean posterior humeral head subluxation of 76% and 78%, respectively. The direction of erosion in type E2 and E3 glenoids was posterior-superior, with a mean posterior humeral head subluxation of 74%. The rate of high position of the glenosphere was higher in the BIO-RSA group (P = .022), whereas the values of β angle and postoperative retroversion were similar in the 2 groups. BIO-RSA group showed radiolucent lines <2 mm around the bone graft in 16 patients (36.4%) and decreased thickness in 15 (34.1%). Incomplete baseplate seating was found in 4 MIO-RSA patients (10%). We found higher rates of humerus condensation lines in MIO-RSA patients (P = .01) and higher rates of cortical thinning and tuberosity resorption in the BIO-RSA group (P = .027 and P = .004, respectively). CONCLUSION Metal-augmented glenoid is a suitable alternative to BIO-RSA to preserve bone and prevent the medialization of the joint line in arthritic glenoid with multiplanar glenoid deformity. Bone and metal augmentation provided satisfactory clinical outcomes. Bone graft resorption in BIO-RSA patients raise concern about the risk of baseplate loosening and requires further long-term studies.
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Affiliation(s)
- Giovanni Merolla
- Shoulder and Elbow Unit, Cervesi Hospital, AUSL Romagna, Cattolica, Italy; Shoulder and Elbow Unit, Cervesi Hospital, AUSL Romagna, Cattolica, Italy.
| | - Andrea Giorgini
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Rocco Bonfatti
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Gian Mario Micheloni
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Alberto Negri
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Fabio Catani
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Luigi Tarallo
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Paolo Paladini
- Shoulder and Elbow Unit, Cervesi Hospital, AUSL Romagna, Cattolica, Italy
| | - Giuseppe Porcellini
- Orthopaedics and Trauma Unit, University of Modena and Reggio Emilia, Modena, Italy
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Zino Kuhn M, Hao KA, Cueto RJ, Dean EW, King JJ, Schoch BS, Wright JO, Farmer KW, Struk AM, Wright TW. Relationship between the prosthesis scapular neck angle and clinical outcomes in reverse shoulder arthroplasty. Shoulder Elbow 2023; 15:94-104. [PMID: 37974639 PMCID: PMC10649511 DOI: 10.1177/17585732231156428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 11/19/2023]
Abstract
Background Optimal glenosphere positioning in reverse shoulder arthroplasty (RSA) remains highly debated. We aimed to characterize the association between the prosthesis scapular neck angle (PSNA) and postoperative range of motion (ROM) and clinical outcome scores. Methods A retrospective review of 284 RSAs using a single design with minimum 2-year follow-up was performed. Glenosphere tilt was measured postoperatively using PSNA. ROM and functional outcome scores were assessed preoperatively and at latest follow-up. The PSNA was dichotomized to inferior or superior groups (>90° vs ≤ 90°, respectively) and stratified into quartiles; ROM and outcome score measures were compared between groups controlling for inferior glenosphere overhang. Results No range of PSNA was consistently associated with superior ROM, clinical outcome scores, or rates of complications including scapular notching. However, greater preoperative to postoperative improvement in active FE was found for superiorly (PSNA ≤ 90°) versus inferiorly tilted glenospheres (37° ± 33° vs 53° ± 35°, P = 0.005) and the greater improvement in active FE (57° ± 35°, P = 0.004) was further isolated to the first quartile (mean 85.1° ± 3.5°). Discussion A lack of variation in clinical outcomes based on PSNA suggests negligible short-term (median follow-up 3.1 years) clinical significance when glenosphere tilt falls within the distribution of this cohort (mean 92.6° ± 6.2°).
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Affiliation(s)
- M Zino Kuhn
- College of Medicine, University of Florida, Gainesville, FL, USA
| | - Kevin A Hao
- College of Medicine, University of Florida, Gainesville, FL, USA
| | - Robert J Cueto
- College of Medicine, University of Florida, Gainesville, FL, USA
| | - Ethan W Dean
- Piedmont Orthopedics | OrthoAtlanta, Atlanta, GA, USA
| | - Joseph J King
- Department of Orthopaedic Surgery and Sports Medicine, University of Florida, Gainesville, FL, USA
| | - Bradley S Schoch
- Department of Orthopedic Surgery, Mayo Clinic, Jacksonville, FL, USA
| | - Jonathan O Wright
- Department of Orthopaedic Surgery and Sports Medicine, University of Florida, Gainesville, FL, USA
| | - Kevin W Farmer
- Department of Orthopaedic Surgery and Sports Medicine, University of Florida, Gainesville, FL, USA
| | - Aimee M Struk
- Department of Orthopaedic Surgery and Sports Medicine, University of Florida, Gainesville, FL, USA
| | - Thomas W Wright
- Department of Orthopaedic Surgery and Sports Medicine, University of Florida, Gainesville, FL, USA
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Silva FD, Ramachandran S, Chhabra A. Glenohumeral osteoarthritis: what the surgeon needs from the radiologist. Skeletal Radiol 2023; 52:2283-2296. [PMID: 36287234 DOI: 10.1007/s00256-022-04206-2] [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: 07/06/2022] [Revised: 10/06/2022] [Accepted: 10/09/2022] [Indexed: 02/02/2023]
Abstract
Glenohumeral osteoarthritis (GHOA) is a widely prevalent disease with increasing frequency due to population aging. Both clinical manifestations and radiography play key roles in the initial diagnosis, staging, and management decisions. Radiographic disease progression evaluation is performed using validated staging systems, such as Kellgren and Lawrence, Samilson, and Hamada. For young patients with mild to moderate GHOA and failed conservative treatment, arthroscopic preservation surgery (APS) is usually considered. Older patients and those with severe GHOA benefit from different types of arthroplasties. Preoperative magnetic resonance imaging (MRI) is essential for APS surgical planning, as it maps repairable labral, cartilage, and rotator cuff lesions. For arthroplasty planning, the status of glenoid cartilage and intactness of rotator cuff as well as glenoid morphology represent key factors guiding the decision regarding the most suitable hardware design, whether resurfacing, partial, total, or reverse joint replacement. Pre-surgical MRI or alternatively computed tomography arthrogram is employed to evaluate the cartilage and rotator cuff. Finally, three-dimensional computed tomography (3D CT) is indicated to optimally assess the glenoid morphology (to determine Walch classification, version, inclination, and bone loss) and analyze the necessity for glenoid osteotomy or graft augmentation to correct the glenoid structural abnormalities for future success and longevity of the shoulder implants or chosen constructs. Understanding the purpose of each imaging and treatment modality allows more efficient image interpretation. This article reviews the above concepts and details what a surgeon needs from a radiologist and could benefit from accurate reporting of preoperative imaging studies.
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Affiliation(s)
| | | | - Avneesh Chhabra
- Musculoskeletal Radiology, UT Southwestern, Dallas, TX, 75390-9178, USA.
- Orthopedic Surgery, UT Southwestern, Dallas, TX, 75390-9178, USA.
- Johns Hopkins University, Baltimore, MD, USA.
- University of Dallas, Irving, TX, USA.
- Walton Centre for Neuroscience, Liverpool, UK.
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Shekhbihi A, Mazzotta A, Reichert W, Masoud M. The base plate orientation angle: a plain radiographic technique for designing the base plate's inclination in reverse shoulder arthroplasty. JSES Int 2023; 7:2507-2516. [PMID: 37969506 PMCID: PMC10638608 DOI: 10.1016/j.jseint.2023.08.006] [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] [Indexed: 11/17/2023] Open
Abstract
Background Superior inclination of the base plate in reverse shoulder arthroplasty (RSA) is underestimated and may lead to major setbacks in terms of functional outcomes due to the altered biomechanics. Joint instability, scapular notching, and loosening of the glenoid component are considered the most serious sequelae. Therefore, a thorough preoperative radiological assessment of the affected shoulder joint and customized design of the prosthesis according to the glenoid morphology are decisive and directly correlated to the outcome. In this article, we propose a simple radiographic technique to assess the inclination of the glenoid preoperatively, which identifies the need for intraoperative correction. Materials and Methods One hundred inconspicuous shoulder radiographs were included in the control group (CG) to define the normal ranges of the base plate orientation angle (BOA) and the base plate correction angle (BCA). Further, both angles were measured on 2-dimensional (2D) computed tomography scans of patients with proximal humerus fractures as well as radiographs, 2D and 3-dimensional (3D) computed tomography scans of patients with cuff tear arthropathy who underwent RSA between 2018 and 2021. The interobserver reliability among three independent testers was evaluated by calculating the intraclass correlation coefficient. In cuff tear arthropathy cases, the BOA and BCA measurements on different imaging modalities were compared using the Wilcoxon test. Possible variations of both angles' values based on glenoid erosion types, according to the Favard classification, were also investigated. Results Regardless of the imaging modality used, the interobserver reliability was excellent among three independent observers. In the CG, the mean BOA and BCA values were 118° ± 6° and 17° ± 5°, respectively. The mean corrected BOA values of the CG and fracture group were 136° ± 5° and 140° ± 5°, respectively. In contrast to the BCA values, the BOA measurements on radiographs showed a statistically significant difference compared to those obtained on 2D- and 3D scans in the cuff arthropathy group. Further, both angles' values varied according to the extent and location of the glenoid erosion. The lowest mean BOA and highest mean BCA values were observed in cases with Favard glenoid type E3. Conclusions The BOA and the BCA are reliable tools proposed to aid in precisely positioning the glenoid component in RSA in the preoperative setting. Whereas, the BOA determines the inclination of the inferior glenoid segment, the BCA represents the extent of correction required to obtain a neutral inclination of the base plate. Glenoid type E3 of the Favard classification with superior wear is particularly susceptible to base plate superior tilt.
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Affiliation(s)
- Abdelkader Shekhbihi
- Department of Trauma Surgery, Lörrach District Hospital, Baden-Württemberg, Germany
| | - Antonio Mazzotta
- Department of Trauma Surgery, Lörrach District Hospital, Baden-Württemberg, Germany
| | - Winfried Reichert
- Department of Trauma Surgery, Lörrach District Hospital, Baden-Württemberg, Germany
| | - Mohammad Masoud
- Department of Trauma Surgery, Lörrach District Hospital, Baden-Württemberg, Germany
- Department of Orthopaedics and Trauma Surgery, University Hospital of Assiut, Assiut, Egypt
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Ardebol J, Pak T, Kiliç AĪ, Hwang S, Menendez ME, Denard PJ. Secondary Rotator Cuff Insufficiency After Anatomic Total Shoulder Arthroplasty. JBJS Rev 2023; 11:01874474-202309000-00005. [PMID: 37729463 DOI: 10.2106/jbjs.rvw.23.00099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
» Secondary rotator cuff insufficiency is a challenging complication after anatomic total shoulder arthroplasty.» Acute tears may be amenable to open or arthroscopic repair in some instances.» Chronic attritional tears are best managed with revision to reverse shoulder arthroplasty, especially in the elderly.» Increased glenoid inclination, larger critical shoulder angle, oversized humeral components, thicker glenoid components, and rotator cuff muscle fatty infiltration have all shown to contribute to tear risk.
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Affiliation(s)
| | | | - Ali Īhsan Kiliç
- Oregon Shoulder Institute, Medford, Oregon
- Izmir Bakircay University, Izmir, Turkey
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Weaver JS, Omar IM, Chadwick NS, Shechtel JL, Elifritz JM, Shultz CL, Taljanovic MS. Update on Shoulder Arthroplasties with Emphasis on Imaging. J Clin Med 2023; 12:jcm12082946. [PMID: 37109282 PMCID: PMC10143235 DOI: 10.3390/jcm12082946] [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: 01/20/2023] [Revised: 04/03/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Shoulder pain and dysfunction may significantly impact quality of life. If conservative measures fail, advanced disease is frequently treated with shoulder arthroplasty, which is currently the third most common joint replacement surgery following the hip and knee. The main indications for shoulder arthroplasty include primary osteoarthritis, post-traumatic arthritis, inflammatory arthritis, osteonecrosis, proximal humeral fracture sequelae, severely dislocated proximal humeral fractures, and advanced rotator cuff disease. Several types of anatomic arthroplasties are available, such as humeral head resurfacing and hemiarthroplasties, as well as total anatomic arthroplasties. Reverse total shoulder arthroplasties, which reverse the normal ball-and-socket geometry of the shoulder, are also available. Each of these arthroplasty types has specific indications and unique complications in addition to general hardware-related or surgery-related complications. Imaging-including radiography, ultrasonography, computed tomography, magnetic resonance imaging, and, occasionally, nuclear medicine imaging-has a key role in the initial pre-operative evaluation for shoulder arthroplasty, as well as in post-surgical follow-up. This review paper aims to discuss important pre-operative imaging considerations, including rotator cuff evaluation, glenoid morphology, and glenoid version, as well as to review post-operative imaging of the various types of shoulder arthroplasties, to include normal post-operative appearances as well as imaging findings of complications.
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Affiliation(s)
- Jennifer S Weaver
- Department of Radiology and Radiologic Sciences, Vanderbilt University Medical Center, 1161 21st Ave. S, MCN CCC-1118, Nashville, TN 37232, USA
| | - Imran M Omar
- Department of Radiology, Northwestern Memorial Hospital, 676 N. Saint Clair Street, Suite 800, Chicago, IL 60611, USA
| | - Nicholson S Chadwick
- Department of Radiology and Radiologic Sciences, Vanderbilt University Medical Center, 1161 21st Ave. S, MCN CCC-1118, Nashville, TN 37232, USA
| | - Joanna L Shechtel
- Department of Radiology and Radiologic Sciences, Vanderbilt University Medical Center, 1161 21st Ave. S, MCN CCC-1118, Nashville, TN 37232, USA
| | - Jamie M Elifritz
- Department of Radiology, MSC08 4720, 1 University of New Mexico, Albuquerque, NM 87131, USA
- Department of Pathology, University of New Mexico, New Mexico Office of the Medical Investigator, MSC08 4720, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Christopher L Shultz
- Department of Orthopaedics and Rehabilitation, University of New Mexico, MSC 10 5600, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Mihra S Taljanovic
- Department of Radiology, MSC08 4720, 1 University of New Mexico, Albuquerque, NM 87131, USA
- Department of Medical Imaging, University of Arizona, 1501 N. Campbell, Tucson, AZ 85724, USA
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11
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Santos I, Pichler L, Saller MM, Thorwächter C, Müller JG, Traxler H, Pietschmann MF, Tauber M, Müller PE. Effect of shape and size of supraspinatus tears on rotator cuff strain distribution: an in vitro study. J Shoulder Elbow Surg 2023; 32:e71-e83. [PMID: 36208674 DOI: 10.1016/j.jse.2022.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/13/2022] [Accepted: 08/27/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND The impact of the size and shape of a supraspinatus tear on the strain of the intact rotator cuff and the kinematics of the shoulder is still unknown. This, however, can be relevant when deciding whether surgical reconstruction is required to prevent an increase in a tendon defect. In this study, the effect of tear width and shape on rotator cuff strain and glenohumeral kinematics was evaluated during active abduction. METHODS Twelve fresh-frozen cadaveric shoulders with intact rotator cuffs were used in this study. We created 50% and 100% wide (full-thickness) crescent-shaped (CS) tears (n = 6) and reverse L-shaped (rLS) tears (n = 6) in the supraspinatus tendon and measured strain and kinematics during active humeral elevation until 30°. RESULTS Both tear shapes and sizes led to an increase in internal rotation, supraspinatus loading force, and superior translation of the humerus. For the 100% wide tear size, anterior translation was observed in the CS tear group, whereas in the rLS tear group, this translation occurred mainly in the posterior direction. Strain was higher in the infraspinatus during the first 25° of abduction in comparison with the supraspinatus tendon in both tear shape groups. An analysis of the anterior and posterior tear borders showed a higher strain concentration on the same side of the tear in the CS tear group with 50% and 100% wide tears. CONCLUSIONS The influence of different tear shapes on translation in the anterior-posterior direction was evident as both CS and rLS tears led to an oppositely directed translation of the humeral head. The strain analysis showed a stress-shielding effect of the infraspinatus at the beginning of abduction. Therefore, special attention must be paid to correctly identify the tear extension and adequately reconstruct the rotator cuff footprint. Moreover, the constant location of maximum strain in the CS tear group may lead to an earlier progression than in the rLS tear group.
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Affiliation(s)
- Inês Santos
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany.
| | - Lieselotte Pichler
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany
| | - Maximilian M Saller
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany
| | - Christoph Thorwächter
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany
| | - Julia Gertrud Müller
- Centre for Anatomy and Cell Biology, Department of Anatomy, Medical University of Vienna, Vienna, Austria
| | - Hannes Traxler
- Centre for Anatomy and Cell Biology, Department of Anatomy, Medical University of Vienna, Vienna, Austria
| | - Matthias F Pietschmann
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany; OrthoPaxis Oberhaching, Oberhaching, Germany
| | | | - Peter E Müller
- Musculoskeletal University Center Munich (MUM), University Hospital, Ludwig Maximilian University of Munich (LMU), Munich, Germany
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12
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Guehring T, Navas L, Westrich J, Zimmerer A, Schmidt S, Barrientos M, Ulmar B. Analysis and 3D correction of glenoid dysplasia with metal hemi-wedge base plate augment: short-term radiographic outcomes. Arch Orthop Trauma Surg 2023:10.1007/s00402-023-04781-6. [PMID: 36705760 PMCID: PMC10374695 DOI: 10.1007/s00402-023-04781-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/13/2023] [Indexed: 01/28/2023]
Abstract
BACKGROUND Glenoid defects can be addressed traditionally by asymmetric reaming or by bone-preserving correction to a more lateral joint line by bone or metal augmented baseplates in reverse shoulder arthroplasties. While there is more evidence in literature regarding the outcome and complications of Bony Increased Offset Reversed Shoulder Arthroplasty (BIO-RSA), there is minimal reported experience with the outcome after metal glenoid augments. The aim of this study was to determine whether a metal augment can correct the glenoid deformity in an anatomic manner. METHODS Glenoid morphology and deformity were determined in 50 patients with Walch type B1, B2, D and Favard type E0-E3 glenoid defects using preoperative radiographic and computed tomography (CT) analysis. All patients received a preoperative planning CT with 3D planning, and measurements of glenoid inclination (in 3 planes proximal, middle, distal), reversed shoulder arthroplasty angle (RSA) and glenoid version were obtained. All patients had a pathologic inclination in the coronal or frontal planes of > 10°. Above the threshold of 10° pathological glenoid version or inclination metal hemi-augments of 10°, 20°, or 30° were used which allow an individual 360° augment positioning according to the patient glenoid deformity. RESULTS The mean preoperative numbers of the glenoid version demonstrate that most glenoids were in retroversion and superior inclination. In total 2410° wedges, 1820° wedges and 8 30° wedges were used. In the majority of cases, the wedge was positioned posteriorly and/or cranially between 10:00 and 12:00 o'clock, which allows a correction in a 3D manner of the glenoid inclination and version. The mean RSA angle could be corrected from 22.76 ± 6.06 to 0.19° ± 2.7 (p < 0.0001). The highest retroversion of the glenoid is evidenced in the proximal section and it could be corrected from - 23.32° ± 4.56 to - 6.74° ± 7.75 (p < 0.0001) and in the middle section from - 18.93° ± 3.35 to - 7.66° ± 5.28 (p < 0.0001). A mean sphere bone overhang distance (SBOD) of 5.70 ± 2.04 mm was found in order to avoid or minimize relevant scapular notching. CONCLUSION By using a new 360° metal-augmented baseplate, the preoperative pathological inclination and retroversion can be corrected without medialization of the joint line. Future clinical results will show whether this bone-preserving procedure improves also the clinical outcomes as compared to asymmetric medialized reaming or wedged BIO-RSA. LEVEL OF EVIDENCE Level IV, Case series.
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Affiliation(s)
- Thorsten Guehring
- Department of Orthopaedic and Trauma Surgery, Orthopädische Klinik Paulinenhilfe, Diakonie Klinikum, Rosenbergstrasse 38, 70176, Stuttgart, Germany
| | - Luis Navas
- Department of Orthopaedic and Trauma Surgery, Orthopädische Klinik Paulinenhilfe, Diakonie Klinikum, Rosenbergstrasse 38, 70176, Stuttgart, Germany.
| | - Jan Westrich
- Department of Orthopaedic and Trauma Surgery, Orthopädische Klinik Paulinenhilfe, Diakonie Klinikum, Rosenbergstrasse 38, 70176, Stuttgart, Germany
| | - Alexander Zimmerer
- ARCUS Sportklinik, Rastatterstraße 17-19, 72175, Pforzheim, Germany.,Department of Orthopaedics and Orthopaedic Surgery, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475, Greifswald, Germany
| | - Sebastian Schmidt
- Department of Orthopaedic and Trauma Surgery, Orthopädische Klinik Paulinenhilfe, Diakonie Klinikum, Rosenbergstrasse 38, 70176, Stuttgart, Germany
| | - Miguel Barrientos
- Arthroplasty Division, Mount Sinai Hospital, University of Toronto, 600 University Drive, Toronto, Canada
| | - Benjamin Ulmar
- ARCUS Sportklinik, Rastatterstraße 17-19, 72175, Pforzheim, Germany
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13
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Kida H, Urita A, Momma D, Matsui Y, Endo T, Kawamura D, Taneichi H, Iwasaki N. Implications of navigation system use for glenoid component placement in reverse shoulder arthroplasty. Sci Rep 2022; 12:21190. [PMID: 36477208 PMCID: PMC9729232 DOI: 10.1038/s41598-022-25833-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Recently, three-dimensional (3D) planning, patient-specific instruments, and navigation system have been developed to improve the accuracy of baseplate placement in reverse shoulder arthroplasty (RSA). The purpose of this study was to evaluate baseplate placement using the navigation system. Sixty-four shoulders in 63 patients who underwent RSA for rotator cuff tear arthropathy or irreparable rotator cuff tears were enrolled. Conventional RSA was performed in 31 shoulders and navigated RSA using pre-operative planning software was performed in 33 shoulders. The use of augmented baseplates, the version and inclination of the baseplate, and screw length were compared between conventional RSA and navigated RSA. Augmented baseplates were used more frequently in navigated RSA than in conventional RSA (20 vs 9 shoulders, p = 0.014). Baseplate alignment was 1.0° (SD 5.1) of retroversion and 2.4° (SD 6.8) of superior inclination in conventional RSA and 0.2° (SD 1.9) of anteversion and 0.3° (SD 1.7) of superior inclination in navigated RSA. Compared with conventional RSA, precision of baseplate version and inclination were higher in navigated RSA (both p < 0.001). Superior, inferior, and posteroinferior screws were significantly longer in navigated RSA than in conventional RSA (p = 0.021, 0.001 and < 0.001, respectively). Precision of superior and inferior screw lengths was significantly higher in navigated RSA than in conventional RSA (both p = 0.001). Our results suggest that adoption of pre-operative planning software increased augmented baseplate use to minimize the glenoid reaming. The navigation system allows placement of the baseplate accurately, according to the pre-operative plan. Furthermore, the navigation system enables monitoring of screw length and direction in real time.
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Affiliation(s)
- Hiroaki Kida
- grid.39158.360000 0001 2173 7691Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Atsushi Urita
- grid.255137.70000 0001 0702 8004Department of Orthopaedic Surgery, Dokkyo Medical University, Kitakobayashi 880, Mibu, Tochigi 321-0293 Japan
| | - Daisuke Momma
- grid.412167.70000 0004 0378 6088Center of Sports Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Yuki Matsui
- grid.39158.360000 0001 2173 7691Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takeshi Endo
- grid.39158.360000 0001 2173 7691Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Daisuke Kawamura
- grid.39158.360000 0001 2173 7691Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Taneichi
- grid.255137.70000 0001 0702 8004Department of Orthopaedic Surgery, Dokkyo Medical University, Kitakobayashi 880, Mibu, Tochigi 321-0293 Japan
| | - Norimasa Iwasaki
- grid.39158.360000 0001 2173 7691Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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14
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Proximal humeral bone loss in stemless shoulder arthroplasty: potential factors influencing bone loss and a new classification system. Arch Orthop Trauma Surg 2022; 143:3085-3090. [PMID: 35852597 DOI: 10.1007/s00402-022-04493-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 05/18/2022] [Indexed: 02/09/2023]
Abstract
INTRODUCTION Proximal humeral bone loss in total shoulder arthroplasty (TSA) is more frequent than in hemiarthroplasty. Factors such as age, gender, inclination angle, and radiolucent lines may also contribute. Additionally, current bone loss grading systems are often not sensitive enough to detect slight bone changes, especially at the medial calcar where bone loss is commonly observed. This study uses a new, more detailed bone loss grading system to evaluate factors that could influence bone loss at the proximal humerus. MATERIALS AND METHODS In this single-center prospective study, patients underwent hemiarthroplasty or TSA with an anatomic stemless prosthesis. Bone loss was measured at the proximal humerus using the new grading system. The effect of treatment type, age, gender, radiolucent lines, and inclination angle on bone loss was evaluated. The Constant-Murley score of patients was assessed and complications recorded. RESULTS Ninety-one shoulders were available for the final follow-up examination at a median of 85.0 months (range 82.6-121.1 months). Bone loss was found at the proximal humerus in approximately one-third of shoulders, and significantly more shoulders had bone loss in TSA than in hemiarthroplasty (P = 0.03). However, this difference was no longer significant after stratifying by gender and age (P > 0.05). Bone loss significantly correlated with gender (P = 0.03) but not with treatment type, radiolucent lines, and the postoperative inclination angle (P > 0.05). Most Constant-Murley score components did not differ significantly between shoulders with and without bone loss (P > 0.05). Lastly, six complications and four revisions were reported. CONCLUSIONS Results showed gender had the greatest influence on bone loss after stemless shoulder arthroplasty. Furthermore, both patients with or without bone loss can expect similar clinical outcomes with the stemless prosthesis used in this study. Lastly, the new grading system is simple and straightforward to use.
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15
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The Evolution of Reverse Total Shoulder Arthroplasty-From the First Steps to Novel Implant Designs and Surgical Techniques. J Clin Med 2022; 11:jcm11061512. [PMID: 35329837 PMCID: PMC8949196 DOI: 10.3390/jcm11061512] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 02/04/2023] Open
Abstract
Purpose of Review: The purpose of this review is to summarize recent literature regarding the latest design modifications and biomechanical evolutions of reverse total shoulder arthroplasty and their impact on postoperative outcomes. Recent findings: Over the past decade, worldwide implantation rates of reverse total shoulder arthroplasty have drastically increased for various shoulder pathologies. While Paul Grammont’s design principles first published in 1985 for reverse total shoulder arthroplasty remained unchanged, several adjustments were made to address postoperative clinical and biomechanical challenges such as implant glenoid loosening, scapular notching, or limited range of motion in order to maximize functional outcomes and increase the longevity of reverse total shoulder arthroplasty. However, the adequate and stable fixation of prosthetic components can be challenging, especially in massive osteoarthritis with concomitant bone loss. To overcome such issues, surgical navigation and patient-specific instruments may be a viable tool to improve accurate prosthetic component positioning. Nevertheless, larger clinical series on the accuracy and possible complications of this novel technique are still missing.
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16
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Biconcave glenoids show 3 differently oriented posterior erosion patterns. J Shoulder Elbow Surg 2021; 30:2620-2628. [PMID: 33964426 DOI: 10.1016/j.jse.2021.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Posterior glenoid wear remains a challenge in anatomic and reverse total shoulder arthroplasty (rTSA) because of an asymmetric erosion with altered retroversion. The purpose of this study was to assess glenoid morphology and evaluate the influence of acromial orientation in posterior glenoid erosion patterns by using 3-dimensional (3D) models. MATERIAL AND METHODS Computed tomographic (CT) shoulder scans from 3 study centers of patients awaiting rTSA between 2017 and 2018 were converted into 3D models and analyzed by 2 observers. Morphology, orientation and greatest depth of erosion, inclination, current retroversion and premorbid retroversion, surface areas of the glenoid, and external acromial orientation and posterior acromial slope were assessed. Measurements were compared between wear patterns, glenoid erosion entities, and genders. RESULTS In the complete cohort of 68 patients (63.8 ± 10.0 years; 19 female, 49 male), a mean of 85.9° (±22.2°) was observed for the glenoid erosion orientation. Additionally, a further distinct classification of the glenoid erosion as posterior-central (PC, n = 39), posterior-inferior (PI, n = 12), and posterior-superior (PS, n = 17) wear patterns was possible. These wear patterns significantly (P < .001) distinguished by erosion orientation (PC = 86.9° ± 12.0°, PI = 116.3° ± 10.3°, PS = 62.3° ± 18.9°). The greatest depth of erosion found was 7.3 ± 2.7 mm in PC wear patterns (PC vs. PI: P = .03; PC vs. PS: n.s.; PI vs. PS: n.s.). Overall, the observed erosion divided the glenoid surface into a paleoglenoid proportion of 48% (±11%) and a neoglenoid proportion of 52% (±12%). For the complete cohort, glenoid inclination was 85.4° (±6.6°), premorbid glenoid retroversion was 80.7° (±8.1°), and current glenoid retroversion was 73.4° (±7.4°), with an estimated increase of 6.9° (±6.0°). The mean external acromial orientation was 118.2° (±8.9°), and the mean posterior acromial slope was 107.2° (±9.6°). There were no further significant differences if parameters were compared by wear patterns, entities, and gender. CONCLUSION Three significantly differently oriented wear patterns (posterior-superior, posterior-central, and posterior-inferior) were distinguished in shoulders demonstrating posterior wear on axillary imaging. No significant differences between the observed erosion patterns or any relevant correlations were found regarding the orientation of the acromion.
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17
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Serrano N, Kissling M, Krafft H, Link K, Ullrich O, Buck FM, Mathews S, Serowy S, Gascho D, Grüninger P, Fornaciari P, Bouaicha S, Müller-Gerbl M, Rühli FJ, Eppler E. CT-based and morphological comparison of glenoid inclination and version angles and mineralisation distribution in human body donors. BMC Musculoskelet Disord 2021; 22:849. [PMID: 34610804 PMCID: PMC8493698 DOI: 10.1186/s12891-021-04660-4] [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: 02/13/2021] [Accepted: 08/25/2021] [Indexed: 11/11/2022] Open
Abstract
Background For optimal prosthetic anchoring in omarthritis surgery, a differentiated knowledge on the mineralisation distribution of the glenoid is important. However, database on the mineralisation of diseased joints and potential relations with glenoid angles is limited. Methods Shoulder specimens from ten female and nine male body donors with an average age of 81.5 years were investigated. Using 3D-CT-multiplanar reconstruction, glenoid inclination and retroversion angles were measured, and osteoarthritis signs graded. Computed Tomography-Osteoabsorptiometry (CT-OAM) is an established method to determine the subchondral bone plate mineralisation, which has been demonstrated to serve as marker for the long-term loading history of joints. Based on mineralisation distribution mappings of healthy shoulder specimens, physiological and different CT-OAM patterns were compared with glenoid angles. Results Osteoarthritis grades were 0-I in 52.6% of the 3D-CT-scans, grades II-III in 34.3%, and grade IV in 13.2%, with in females twice as frequently (45%) higher grades (III, IV) than in males (22%, III). The average inclination angle was 8.4°. In glenoids with inclination ≤10°, mineralisation was predominantly centrally distributed and tended to shift more cranially when the inclination raised to > 10°. The average retroversion angle was − 5.2°. A dorsally enhanced mineralisation distribution was found in glenoids with versions from − 15.9° to + 1.7°. A predominantly centrally distributed mineralisation was accompanied by a narrower range of retroversion angles between − 10° to − 0.4°. Conclusions This study is one of the first to combine CT-based analyses of glenoid angles and mineralisation distribution in an elderly population. The data set is limited to 19 individuals, however, indicates that superior inclination between 0° and 10°-15°, and dorsal version ranging between − 9° to − 3° may be predominantly associated with anterior and central mineralisation patterns previously classified as physiological for the shoulder joint. The current basic research findings may serve as basic data set for future studies addressing the glenoid geometry for treatment planning in omarthritis. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-021-04660-4.
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Affiliation(s)
- Nabil Serrano
- Institute of Evolutionary Medicine (IEM), University of Zurich, Zurich, Switzerland
| | - Marc Kissling
- Institute of Anatomy, University of Bern, Bern, Switzerland
| | - Hannah Krafft
- Division of Gross Anatomy, Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Karl Link
- Division of Gross Anatomy, Institute of Anatomy, University of Zurich, Zurich, Switzerland.,Anatomy, University of Fribourg, Fribourg, Switzerland
| | - Oliver Ullrich
- Division of Gross Anatomy, Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Florian M Buck
- Medical Radiology Institute, Schulthess Clinic, Zurich, Switzerland
| | - Sandra Mathews
- Institute of Evolutionary Medicine (IEM), University of Zurich, Zurich, Switzerland
| | - Steffen Serowy
- Clinic of Neuroradiology, University Hospital of Magdeburg, Magdeburg, Germany
| | - Dominic Gascho
- Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | | | - Paolo Fornaciari
- Department of Orthopaedics, Balgrist University Hospital, Zurich, Switzerland.,Department of Orthopaedic Surgery and Traumatology, University Hospital Fribourg, Fribourg, Switzerland
| | - Samy Bouaicha
- Department of Orthopaedics, Balgrist University Hospital, Zurich, Switzerland
| | - Magdalena Müller-Gerbl
- Musculoskeletal Research, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Frank-Jakobus Rühli
- Institute of Evolutionary Medicine (IEM), University of Zurich, Zurich, Switzerland.
| | - Elisabeth Eppler
- Musculoskeletal Research, Department of Biomedicine, University of Basel, Basel, Switzerland. .,Clinic of Neuroradiology, University Hospital of Magdeburg, Magdeburg, Germany. .,Institute of Anatomy, University of Bern, Bern, Switzerland.
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18
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Almeida A, Agostini DC, Nesello PF, de Almeida NC, Mioso R, Agostini AP. Tomographic Analysis of Positioning of Reverse Baseplates Positioning. J Shoulder Elb Arthroplast 2021; 5:2471549220987714. [PMID: 34497966 PMCID: PMC8282139 DOI: 10.1177/2471549220987714] [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: 08/28/2020] [Revised: 10/15/2020] [Accepted: 12/22/2020] [Indexed: 11/17/2022] Open
Abstract
Objective To verify whether reverse baseplate positioning without the support of intraoperative three-dimensional technology is within the acceptable parameters in the literature and whether glenoid bone deformity (GBD) compromises this positioning. Methods Sixty-nine reverse shoulder arthroplasties were evaluated with volumetric computed tomography (CT). Two radiologists performed blinded CT scan analysis and evaluated baseplate position within 2mm of the inferior glenoid; the inclination and version of the baseplate in relation to the Friedman line; and upper and lower screw and baseplate metallic peg end point positionings. The patients were divided according to the presence of GBD for statistical analyses. Results The two radiologists concurred reasonably in their interpretations of the following analyzed parameters: baseplate position within 2mm of the inferior glenoid rim (97.1% and 95.7%), baseplate inclination (82.6% and 81.2%), baseplate version (69.6% and 56.5%), the upper screw reaching the base of the coracoid process (71% and 79.7%), the inferior screw remaining inside the scapula (88.4% and 84.1%), and the metallic peg of the baseplate considered intraosseous (88.4% and 72.5%). Conclusion Reverse baseplate positioning without intraoperative three-dimensional technology is within the acceptable parameters of the literature, except for baseplate version and upper screw position. GBD did not interfere with baseplate positioning in reverse shoulder arthroplasty.
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Affiliation(s)
| | | | | | | | - Rafael Mioso
- Radiologist Physician, General Hospital, Caxias do Sul, Brazil
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19
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Lopiz Y, Galán-Olleros M, Rodriguez-Rodriguez L, García-Fernández C, Marco F. Radiographic changes around the glenoid component in primary reverse shoulder arthroplasty at mid-term follow-up. J Shoulder Elbow Surg 2021; 30:e378-e391. [PMID: 33197588 DOI: 10.1016/j.jse.2020.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/20/2020] [Accepted: 10/07/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Some local events after reverse shoulder arthroplasty (RSA) occur without the patient experiencing symptoms and yet may be detected on diagnostic imaging, thereby serving as indicators of future complications that may require revision. Most of these events involve the glenoid component, but radiographic studies evaluating this component are scarce, especially medium- and long-term studies. This study aimed to analyze the radiographic changes around the glenoid component and determine the risk factors associated with the presence of these radiographic changes. MATERIALS AND METHODS A retrospective review of 105 primary Grammont-style RSAs implanted between 2003 and 2014 was conducted. Radiographic outcomes were evaluated in patients with ≥5 years of radiographic follow-up. Standardized digital radiographs obtained immediately postoperatively and at a minimum follow-up time of 5 years were analyzed to determine (1) glenoid component position (inclination and height) and (2) minor radiographic changes (Sirveaux grade 1 or 2 scapular notching; nondisplaced acromial fracture; radiolucent lines around 1 or 2 screws; Brooker grade 1a, 1b, or 2 heterotopic calcifications; or single screw rupture), as well as major radiographic changes (Sirveaux grade 3 or 4 scapular notching; radiolucent lines around ≥3 screws or central peg; Brooker grade 1c or 3 heterotopic calcifications; prosthetic dislocation; loosening or migration; or disassembly). RESULTS Major radiologic changes were identified in 14.3% of the cases. Bivariate analysis showed that more changes were associated with the arthroplasties implanted in the first years of the study (odds ratio [OR] = 0.81, P = .012). This time-related variable was also associated with inclination (OR = 0.88, P = .045) and height (OR = 0.75, P = .001), improving in arthroplasties implanted in the last years of the study. Multivariate analysis revealed an increased risk of severe scapular notching mainly associated with superior tilt (OR = 2.52, P = .036) and a high (OR = 2.68, P = .019) or excessively high (OR = 7.55, P = .013) position and an increased risk of loosening signs associated with superior tilt (OR = 8.92, P = 9.1 × 10-6). CONCLUSIONS The percentage of radiologic changes of the glenoid component in RSA is considerable, despite the detection of a decrease in their presence among the arthroplasties implanted outside the initial period. Superior tilt and an excessively high position appear to be associated with a severe degree of scapular notching development and increased risk of radiographic loosening signs. Knowledge of the factors associated with major radiologic changes in the medium-term follow-up will help to optimize the primary surgical technique for each patient and indication, improving implant survival in primary RSA surgery.
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Affiliation(s)
- Yaiza Lopiz
- Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, Madrid, Spain; Department of Surgery, Complutense University, Madrid, Spain.
| | - María Galán-Olleros
- Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, Madrid, Spain
| | - Luis Rodriguez-Rodriguez
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, UGC de Reumatología, Hospital Clínico San Carlos, Madrid, Spain
| | - Carlos García-Fernández
- Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, Madrid, Spain
| | - Fernando Marco
- Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, Madrid, Spain; Department of Surgery, Complutense University, Madrid, Spain
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Nunes B, Linhares D, Costa F, Neves N, Claro R, Silva MR. Lateralized versus nonlateralized glenospheres in reverse shoulder arthroplasty: a systematic review with meta-analysis. J Shoulder Elbow Surg 2021; 30:1700-1713. [PMID: 33160029 DOI: 10.1016/j.jse.2020.09.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/16/2020] [Accepted: 09/29/2020] [Indexed: 02/01/2023]
Abstract
HYPOTHESIS/BACKGROUND Lateralization in reverse shoulder arthroplasty (L-RSA) was proposed to overcome some limitations of the original Grammont-style design (S-RSA). This systematic review aims to compare the clinical and functional outcomes and complications of S-RSA with L-RSA, and to assess the individual results of metallic and bony lateralization implants. METHODS A systematic search from January 1980 to December 2019 was performed. Studies were selected in 2 phases by 2 independent reviewers; disagreements were solved by discussion. Inclusion criteria were: (1) original studies; (2) written in English or French; (3) adult individuals submitted to RSA surgery; and (4) RSA with a lateralization device in at least one of the groups. Exclusion criteria were: (1) nonoriginal studies or case reports; (2) absence of clinical or radiographic outcomes; and (3) no comparison group using S-RSA. Data were extracted for outcomes of functional status (American Shoulder and Elbow Surgeons, Constant, visual analog scale, Simple Shoulder Test, Subjective Shoulder Value, Activities of Daily Life that require External Rotation, and Disabilities of the Arm, Shoulder, and Hand), range of motion (ROM), complications, revisions, and notching. Meta-analyses were performed when possible. Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines were followed. RESULTS Fifteen articles/16 studies were included (865 participants: 440 L-RSA and 425 S-RSA). Most studies found no differences between the L-RSA and S-RSA groups in qualitative and meta-analysis for American Shoulder and Elbow Surgeons, Constant, Simple Shoulder Test, Activities of Daily Life that require External Rotation, and Disabilities of the Arm, Shoulder, and Hand scores. Meta-analysis demonstrated significantly lower visual analog scale (1 point) and higher Subjective Shoulder Value (6 points) in L-RSA than in S-RSA. No significant differences were found in the qualitative analyses of most studies regarding ROM in forward elevation, abduction, and internal/external rotation, but meta-analysis reported a significantly higher external rotation in L-RSA groups and specifically in osseous lateralization. Complication rate was significantly lower in L-RSA (odds ratio = 0.38), but no significant differences were found for revision rates. Notching rate was significantly lower in the L-RSA group (odds ratio = 0.14), both for osseous and metallic lateralization. DISCUSSION/CONCLUSION This systematic review focused on studies comparing L-RSA and S-RSA and found significantly lower notching and complication rates in L-RSA groups. This review highlighted similar outcomes in clinical scores and a slight advantage for L-RSA in ROM, especially in external rotation. L-RSA was not associated with increased revision rates, while presenting lower complication and notching rates. Inclusion of studies with metallic and osseous lateralization has helped to provide further evidence on this subject, but heterogeneity and low evidence levels of the included studies may limit our conclusions.
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Affiliation(s)
- Bernardo Nunes
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal.
| | - Daniela Linhares
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal; Departamento de Medicina da Comunidade, Informação e Decisão em Saúde, MEDCIDS, Faculty of Medicine, University of Porto, Porto, Portugal; Patient-Centered Innovation and Technologies Group, PaCeIT-Center for Health Technology and Services Research, CINTESIS, Porto, Portugal
| | - Francisca Costa
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal
| | - Nuno Neves
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal; Orthopedics Department, CUF Porto Hospital, Porto, Portugal; Surgery and Physiology Department, Faculty of Medicine, University of Porto, Porto, Portugal; i3S-Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal; INEB-Instituto Nacional de Engenharia Biomédica, University of Porto, Porto, Portugal
| | - Rui Claro
- Shoulder Unit, Orthopedics Department, Centro Hospitalar e Universitário do Porto, Porto, Portugal
| | - Manuel Ribeiro Silva
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal; Orthopedics Department, CUF Porto Hospital, Porto, Portugal; i3S-Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal; INEB-Instituto Nacional de Engenharia Biomédica, University of Porto, Porto, Portugal
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Lo L, Koenig S, Leong NL, Shiu BB, Hasan SA, Gilotra MN, Wang KC. Glenoid bony morphology of osteoarthritis prior to shoulder arthroplasty: what the surgeon wants to know and why. Skeletal Radiol 2021; 50:881-894. [PMID: 33095290 DOI: 10.1007/s00256-020-03647-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/07/2020] [Accepted: 10/07/2020] [Indexed: 02/08/2023]
Abstract
Shoulder arthroplasty is performed with increasing frequency, and osteoarthritis is the most common indication for this procedure. However, the glenoid side of the joint is widely recognized as a limiting factor in the long-term durability of shoulder replacement, and osteoarthritis leads to characteristic bony changes at the glenoid which can exacerbate this challenge by reducing the already limited glenoid bone stock, by altering biomechanics, and by interfering with operative exposure. This article reviews the Walch classification system for glenoid morphology. Several typical findings of osteoarthritis at the glenoid are discussed including central bone loss, posterior bone loss, retroversion, biconcavity, inclination, osteophyte formation, subchondral bone quality, and bone density. The three primary types of shoulder arthroplasty are reviewed, along with several techniques for addressing glenoid deformity, including eccentric reaming, bone grafting, and the use of augmented glenoid components. Ultimately, a primary objective at shoulder arthroplasty is to correct glenoid deformity while preserving bone stock, which depends critically on characterizing the glenoid at pre-operative imaging. Understanding the surgical techniques and the implications of glenoid morphology on surgical decision-making enables the radiologist to provide the morphologic information needed by the surgeon.
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Affiliation(s)
- Lawrence Lo
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA
| | - Scott Koenig
- Department of Orthopaedics, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA
| | - Natalie L Leong
- Department of Orthopaedics, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA.,Department of Orthopaedics, University of Maryland, School of Medicine, 110 S. Paca Street, 6th Floor, Baltimore, MD, 21201, USA
| | - Brian B Shiu
- Department of Orthopaedics, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA
| | - S Ashfaq Hasan
- Department of Orthopaedics, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA.,Department of Orthopaedics, University of Maryland, School of Medicine, 2200 Kernan Drive, Suite 1154, Baltimore, MD, 21207, USA
| | - Mohit N Gilotra
- Department of Orthopaedics, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA.,Department of Orthopaedics, University of Maryland, School of Medicine, 100 Penn Street, Room 540D, Baltimore, MD, 21201, USA
| | - Kenneth C Wang
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland, School of Medicine, 22 S. Greene St, Baltimore, MD, 21201, USA. .,Imaging Service, Baltimore VA Medical Center, 10 N. Greene St, Rm. C1-24, Baltimore, MD, 21201, USA.
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22
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Ozel O, Hudek R, Abdrabou MS, Werner BS, Gohlke F. The implications of the glenoid angles and rotator cuff status in patients with osteoarthritis undergoing shoulder arthroplasty. BMC Musculoskelet Disord 2020; 21:668. [PMID: 33036604 PMCID: PMC7545572 DOI: 10.1186/s12891-020-03690-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 09/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The success of shoulder arthroplasty, both reverse and anatomical, depends on correcting the underlying glenoid deformity especially in patients with an osteoarthritis. We hypothesized that the distribution of glenoid version and especially inclination are underestimated in the shoulder arthritis population, and also that superior glenoid inclination can be detected through 3-dimensional (3D) software program of computed tomography (CT) to a greater proportion in patients with rotator cuff insufficiency, but also in patients with osteoarthritis with an intact rotator cuff. Because of the influence of rotator cuff imbalance on secondary glenoid wear the values of the critical shoulder angle (CSA) and the fatty infiltration of the rotator cuff are further analyzed. The aim of our study is to determine; 1) the distribution of glenoid inclination and version; 2) the relationship between glenoid inclination, version, the critical shoulder angle (CSA) to the status of the rotator cuff; 3) the proportion of patients with both an intact rotator cuff and a superior inclination greater than 10°. METHODS A total of 231 shoulders were evaluated with X-ray images, 3-dimentional (3D) software program of computed tomography (CT), and magnetic resonance imaging. The cohort was divided into 3 groups according to their inclination angles and also grouped as intact-rotator cuff and torn-cuff group. RESULTS The median (min/max) values for the 231 shoulders were 8° (- 23°/56°) for the inclination angle, - 11°(- 55°/23°) for the version angle, and 31.5°(17.6°/61.6°) for the CSA. The majority of the glenoids were found to show posterior-superior erosion. Glenoid inclination angle and CSA were significantly higher in torn-cuff group when compared with intact-cuff group (P < 0.001, both). The rotator cuff tears were statistically significant in high inclination group than low inclination group and no inclination group (p < 0.001). In the high inclination group, 41 of 105 (39%) shoulders had an intact rotator cuff, in about 18% of all shoulders. CONCLUSION Our findings show that 3D evaluation of glenoid inclination is mandatory for preoperative planning of shoulder replacement in order to properly assess superior inclination and that reverse shoulder arthroplasty may be considered more frequently than as previously expected, even when the rotator cuff is intact. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Omer Ozel
- Department of Orthopaedics, Baskent University Istanbul Hospital, Oymacı sok, no:7 34662 Altunizade Uskudar, Istanbul, Turkey.
| | - Robert Hudek
- Department of Shoulder Surgery, Rhön Klinikum, Bad Neustadt an der Saale, Germany
| | - Mohamed S Abdrabou
- Department of Shoulder Surgery, Rhön Klinikum, Bad Neustadt an der Saale, Germany
| | - Birgit S Werner
- Department of Shoulder Surgery, Rhön Klinikum, Bad Neustadt an der Saale, Germany
| | - Frank Gohlke
- Department of Shoulder Surgery, Rhön Klinikum, Bad Neustadt an der Saale, Germany
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23
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Salhi A, Burdin V, Boutillon A, Brochard S, Mutsvangwa T, Borotikar B. Statistical Shape Modeling Approach to Predict Missing Scapular Bone. Ann Biomed Eng 2019; 48:367-379. [DOI: 10.1007/s10439-019-02354-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 08/31/2019] [Indexed: 11/25/2022]
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24
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Boileau P, Gauci MO, Wagner ER, Clowez G, Chaoui J, Chelli M, Walch G. The reverse shoulder arthroplasty angle: a new measurement of glenoid inclination for reverse shoulder arthroplasty. J Shoulder Elbow Surg 2019; 28:1281-1290. [PMID: 30935825 DOI: 10.1016/j.jse.2018.11.074] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/26/2018] [Accepted: 11/30/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND Avoiding superior inclination of the glenoid component in reverse shoulder arthroplasty (RSA) is crucial. We hypothesized that superior inclination was underestimated in RSA. Our purpose was to describe and assess a new measurement of inclination for the inferior portion of the glenoid (where the baseplate rests). METHODS The study included 47 shoulders with rotator cuff tear arthropathy (mean age, 76 years). The reverse shoulder arthroplasty angle (RSA angle), defined as the angle between the inferior part of the glenoid fossa and the perpendicular to the floor of the supraspinatus, was compared with the global glenoid inclination (β angle or total shoulder arthroplasty [TSA] angle). Measurements were made on plain anteroposterior radiographs and reformatted 2-dimensional (2D) computed tomography (CT) scans by 3 independent observers and compared with 3-dimensional (3D) software (Glenosys) measurements. RESULTS The mean RSA angle was 25° ± 8° on plain radiographs, 20° ± 6° on reformatted 2D CT scans, and 21° ± 5° via 3D reconstruction software. The mean TSA angle was on average 10° ± 5° lower than the mean RSA angle (P < .001); this difference was observed regardless of the method of measurement (radiographs, 2D CT, or 3D CT) and type of glenoid erosion according to Favard. In Favard type E1 glenoids with central concentric erosion, the difference between the 2 angles was 12° ± 4° (P < .001). CONCLUSION The same angle cannot be used to measure glenoid inclination in anatomic and reverse prostheses. The TSA (or β) angle underestimates the superior orientation of the reverse baseplate in RSA. The RSA angle (20° ± 5°) needs to be corrected to achieve neutral inclination of the baseplate (RSA angle = 0°). Surgeons should be aware that E1 glenoids (with central erosion) are at risk for baseplate superior tilt if the RSA angle is not corrected.
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Affiliation(s)
- Pascal Boileau
- University Institute of Locomotion & Sport (iULS), Pasteur 2 Hospital, University of Nice-Sophia Antipolis, Nice, France.
| | - Marc-Olivier Gauci
- University Institute of Locomotion & Sport (iULS), Pasteur 2 Hospital, University of Nice-Sophia Antipolis, Nice, France
| | - Eric R Wagner
- Division of Upper Extremity Surgery, Department of Orthopaedic Surgery, Emory University, Atlanta, GA, USA
| | - Gilles Clowez
- University Institute of Locomotion & Sport (iULS), Pasteur 2 Hospital, University of Nice-Sophia Antipolis, Nice, France
| | | | - Mikaël Chelli
- University Institute of Locomotion & Sport (iULS), Pasteur 2 Hospital, University of Nice-Sophia Antipolis, Nice, France
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Glenoidrekonstruktion bei Wechseloperationen an der Schulter. OPERATIVE ORTHOPADIE UND TRAUMATOLOGIE 2019; 31:98-114. [DOI: 10.1007/s00064-019-0594-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/13/2018] [Accepted: 09/25/2018] [Indexed: 10/27/2022]
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