Imaging of Shoulder Arthroplasties

French, Cristy; Petscavage-Thomas, Jonelle; Bernard, Stephanie A.

doi:10.2214/ajr.18.19529

Cited by 14 publications

(27 citation statements)

References 73 publications

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“…On CT, the shape of the axillary margin of the scapula is assessed for glenoid component positioning [22]. The glenoid often undergoes erosive changes secondary to altered mechanics and arthritis, resulting in altered morphology, which can be described by using the modified Walch classification (Table 1) (Figure 6) [2,3,6,14,16,[23][24][25][26][27].…”

Section: Preoperative Imagingmentioning

confidence: 99%

“…Osseous erosion of the glenoid results in reduced bone stock available to support the glenoid component [6]. Adequate glenoid bone stock is necessary to allow for correction of the glenoid version if needed, as well as for placement of the glenoid component hardware [23]. CT can assess glenoid bone stock, which should be at least 2 cm in depth centrally (Figure 7) [22,23].…”

Section: Preoperative Imagingmentioning

confidence: 99%

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Update on Shoulder Arthroplasties with Emphasis on Imaging

Weaver

Omar

Chadwick

et al. 2023

JCM

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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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Section: Preoperative Imagingmentioning

confidence: 99%

Section: Preoperative Imagingmentioning

confidence: 99%

Update on Shoulder Arthroplasties with Emphasis on Imaging

Weaver

Omar

Chadwick

et al. 2023

JCM

View full text Add to dashboard Cite

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“…45 Progressive radiolucency or periosteal reaction or bone resorption may also be a sign of infection. 35 MR imaging is superior in the evaluation of soft tissues. Despite known limitations in imaging shoulder arthroplasties, MR imaging may show a sinus tract, fluid collections, or lamellated synovitis.…”

Section: Irreparable Rotator Cuff: Reverse Total Shoulder Arthroplastymentioning

confidence: 99%

“…The humeral component should be centered with respect to the glenosphere, although joint space width may depend on component design and represent the thickness of the radiolucent cup inlay. 35…”

Section: Normal Imaging Findingsmentioning

confidence: 99%

Posttreatment Imaging of the Shoulder

Schäffeler¹

2022

Semin Musculoskelet Radiol

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The shoulder joint is vulnerable for injuries following trauma and in the context of sporting activities. Degenerative rotator cuff disease is also a common entity. Conservative therapy is often not indicated or does not lead to the desired success, so surgical intervention is necessary. Routine follow-ups, but also persistent complaints, delayed healing, or recurrent trauma, usually need postoperative imaging of the shoulder. The choice of the adequate imaging modality and technique is important to reach the correct diagnosis. Additionally, knowledge of the most common surgical procedures, as well as typical normal findings and expected pathologies on different imaging modalities, is crucial for the radiologist to play a relevant role in the postoperative diagnostic process. This article addresses postoperative imaging after rotator cuff repair, shoulder arthroplasty, and surgery for shoulder stabilization with an emphasis on computed tomography and magnetic resonance imaging.

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“…This creates a further contact surface between two different materials with possible complications, e.g., dissociation of the two parts or abrasion of the components. Additionally, these glenoids can increase the width of the two components or reduce the PE content and may stress shield the underlying bone due to primary stable fixation [ 7 ]. The results of historical metalback glenoids in the literature are rather poor, and based on a systematic review of Papadonikolakis and Matsen carried out in 2014, it was determined that MBGs are not advisable as they have higher failure rates [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Clinical and Radiologic Outcomes after Anatomical Total Shoulder Replacement Using a Modular Metal-Backed Glenoid after a Mean Follow-Up of 5.7 Years

Noschajew

Rittenschober

Kindermann

et al. 2022

JCM

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Background: Glenoid wear is a common complication of anatomical total shoulder arthroplasty (aTSA) with a metal-backed glenoid (MBG), and the clinical and radiological results of historical implants are poor. The aim of this work was to evaluate the clinical and radiological results of 25 participants as well as the longevity after implantation of an anatomic shoulder prosthesis with a recent, modular cementless flat metal-backed glenoid component after a mean follow-up of 5.7 years. Methods: Clinically, the Simple Shoulder Test (SST), UCLA Activity Score (UCLA), and Constant Murley Score (CMS) were evaluated. Radiographically, the radiolucent lines (RLs), humeral head migration (HHM), and lateral glenohumeral offset (LGHO) were assessed. Survival was calculated with Kaplan–Meier curves and life-table analysis. Results: The mean CMS at follow-up was 46.2 points (range: 14–77; SD: 19.5). In terms of the SST score, the average value was 6.5 points (range: 1–10; SD: 3.5). The UCLA activity score showed a mean value of 5.9 points (range: 1–9; SD: 2.1). There were 17 revisions after a mean follow-up of 68.2 months (range: 1.8–119.6; SD: 27.9). HHM occurred in every patient, with a mean measurement of 6.4 mm (range: 0.5–13.4; SD: 3.9; p < 0.0001). The mean LGHO between the initial postoperative and follow-up images was 2.6 mm (range: 0–4.0; SD: 1.5; p < 0.0001). RLs were found in 22 patients (88%) around the glenoid and in 21 patients (84%) around the humeral head prosthesis. Conclusion: The clinical and radiographic outcomes after metal-backed glenoids were poor at 2.2 to 8.4 years of follow-up. We determined devastating survival in the majority of cases (68%), with mostly inlay wear (71%) as the main reason that led to revision surgery. The use of metalback genoids cannot be recommended based on the data of this study.

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Imaging of Shoulder Arthroplasties

Abstract: Given the increasing use of shoulder arthroplasty, it is important to understand the imaging features of the various shoulder arthroplasty complications.

Cited by 14 publications

References 73 publications

Update on Shoulder Arthroplasties with Emphasis on Imaging

Update on Shoulder Arthroplasties with Emphasis on Imaging

Posttreatment Imaging of the Shoulder

Clinical and Radiologic Outcomes after Anatomical Total Shoulder Replacement Using a Modular Metal-Backed Glenoid after a Mean Follow-Up of 5.7 Years

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