Is Acromial Morphology Different in Patients with Eccentric Glenohumeral Osteoarthritis?

Background: Acromial morphology has been implicated as a potential contributor to eccentric glenohumeral osteoarthritis (GHOA), leading to the development of novel procedures including scapular spine corrective osteotomies. However, there remains a substantial gap in knowledge on the relationship between acromial morphology and eccentric GHOA. This study utilized a comprehensive three-dimensional (3D) semi-automated analysis of acromial morphology to assess its association with eccentric GHOA patterns.

Soft Tissue Injury and Immobilization Are Both Required for Persistent Elbow Contracture in a Rat Model.

Post-traumatic joint contracture commonly occurs after elbow injury. Although known as a risk factor for poor outcomes, immobilization is necessary to prevent reinjury. The objective of this study was to isolate the contribution of immobilization to mechanical and functional disability using an animal model.

Navigating the future: A comprehensive review of technology in shoulder arthroplasty.

Unlabelled: The volume of shoulder arthroplasty (SA) procedures has increased significantly in recent years, outpacing the growth of hip and knee arthroplasty. As a relatively young area in orthopedics, shoulder arthroplasty offers many opportunities for innovation, often borrowing from established practices in other subspecialties. Degenerative shoulder pathology presents unique challenges that can be difficult to adequately address with conventional reconstructive methods alone.

Is There an Association Between Postoperative Internal Rotation and Patient-reported Outcomes After Total Shoulder Arthroplasty?

Background: Deficient internal rotation after shoulder arthroplasty can inhibit specific essential activities of daily living that require behind-the-back arm positioning. Although postoperative internal rotation deficits occur, their impact on outcomes of total shoulder arthroplasty (TSA) is not well established. Previous authors have validated the Single Assessment Numeric Evaluation (SANE) as a patient-reported assessment of acceptable outcomes of TSA.

Midterm radiographic outcomes of anatomic total shoulder arthroplasty in biplanar glenoid deformities.

Background: Optimal management of retroversion in anatomic total shoulder arthroplasty (aTSA) remains controversial, and limited attention has been directed to the impact of glenoid inclination. Prior biomechanical study suggests that residual glenoid inclination generates shear stresses that may lead to early glenoid loosening. Combined biplanar glenoid deformities may complicate anatomic glenoid reconstruction and affect outcomes.

Geometric accuracy of low-dose CT scans for use in shoulder musculoskeletal research applications.

Computed tomography (CT) imaging is frequently employed in a variety of musculoskeletal research applications. Although research studies often use imaging protocols developed for clinical applications, lower dose protocols are likely possible when the goal is to reconstruct 3D bone models. Our purpose was to describe the dose-accuracy trade-off between incrementally lower-dose CT scans and the geometric reconstruction accuracy of the humerus, scapula, and clavicle.

Incidence of and Risk Factors for Reoperation and Revision Following Total Elbow Arthroplasty with an Anatomic Convertible Prosthesis.

Background: Total elbow arthroplasty (TEA) remains a valuable tool for treating inflammatory, degenerative, and traumatic elbow conditions. This study aimed to understand the incidence of and risk factors for reoperation following TEA at a high-volume center utilizing an implant with a convertible linkage and the potential for anatomic lateral column reconstruction.

Methods: All patients undergoing primary TEA with the Latitude prosthesis (Stryker) from July 2001 to May 2020 were identified.

Clinical and Radiographic Outcomes and Graft Incorporation Rate Assessed by CT Scan After Reverse Shoulder Arthroplasty With Glenoid Structural Bone Graft Reconstruction.

Introduction: Reverse total shoulder arthroplasty (RTSA) with structural bone graft has been described as a technique in addressing glenoid bony defects. Studies have demonstrated acceptable outcomes with structural autograft or allograft. However, most of these studies are relatively small and rarely evaluate bone graft incorporation with CT scan.

Three-dimensional analysis of biplanar glenoid deformities: what are they and can they be virtually reconstructed with anatomic total shoulder arthroplasty implants?

Background: Descriptions of glenoid deformities in glenohumeral osteoarthritis (GHOA) have focused on the axial plane. Less is known regarding arthritic glenoids with higher amounts of superior inclination and little evidence exists to guide management of inclination or combined version-inclination deformity when performing anatomic total shoulder arthroplasty (aTSA). We hypothesized that biplanar deformities (BD) would be present in a higher proportion of GHOA patients than previously appreciated, and these deformities would be difficult to adequately reconstruct with contemporary aTSA implants.

Predictors of Internal Rotation after Reverse Shoulder Arthroplasty.

Objectives: Internal rotation (IR) remains unpredictable following reverse total shoulder arthroplasty (rTSA). This study aimed to determine if increasing IR limits range of motion in other planes, and to determine pre- and intra-operative factors associated with post-operative IR.

Methods: A retrospective analysis of a single surgeon's primary rTSA with a single implant was undertaken, excluding patients with acute fracture or infection.

Factors associated with genetic markers for rotator cuff disease in patients with atraumatic rotator cuff tears.

For atraumatic rotator cuff tears, genetics contributes to symptomatic tear risk and may influence rotator cuff healing after surgical repair. But little is known about how genetic factors influence rotator cuff tear patient characteristics at presentation. We collected saliva samples for genotyping from atraumatic rotator cuff tear patients.

Revision of failed reverse total shoulder arthroplasty with reverse: short-term clinical outcomes.

Background: The prevalence of failed reverse total shoulder arthroplasty (rTSA) is increasing. This can often present a challenging clinical situation with substantial bone loss and limited reconstruction options. This study reports a single tertiary referral center's experience with revision of failed rTSA managed with revision rTSA of bone-interfacing components.

Effect of Computerized Tomography on Assessment and Surgical Planning for Olecranon Fractures.

Objectives: (1) Determine effects of computed tomography (CT) on reproducibility of olecranon fracture classification. (2) Determine effects of CT utilization on interobserver agreement regarding management of olecranon fractures. (3) Evaluate factors associated with articular impaction.

Hematoma Following Shoulder Arthroplasty: Incidence, Management, and Outcomes.

Background: A paucity of data regarding the implications of postoperative hematoma formation on outcomes after shoulder arthroplasty exists. Previous studies on major joint arthroplasty have associated postoperative hematoma formation with high rates of prosthetic joint infection (PJI) and reoperation.

Methods: A total of 6,421 shoulder arthroplasty cases were retrospectively reviewed from an institutional database (5,941 primary cases, 480 revision) between December 2008 and July 2017.

Anatomic shoulder arthroplasty in Walch type C glenoid deformity: mid- to long-term outcomes.

Background: Hypoplastic glenoid morphology in the setting of glenohumeral osteoarthritis is a rare yet complex surgical problem. Treatment of this patient population with anatomic total shoulder arthroplasty (aTSA) remains controversial. Furthermore, there is no gold-standard approach, with limited guidance for surgeons on the need for glenoid version correction in the setting of a dysplastic glenoid.

Patient Disparities and Provider Diversity in Orthopaedic Surgery: A Complex Relationship.

Disparities in the access to, utilization of, and outcomes after orthopaedic surgery are a notable problem in the field that limits patients' ability to access the highest level of care and achieve optimal outcomes. Disparities exist based on numerous sociodemographic factors, with sex and race/ethnicity being two of the most well-studied factors linked to disparities in orthopaedic care. These disparities cross all subspecialties and tend to negatively affect women and racial/ethnic minorities.

Hematoma following total elbow arthroplasty: incidence, management, and outcomes.

Introduction: This study investigates the incidence, risk factors for, and clinical outcomes of hematoma following total elbow arthroplasty.

Methods: We retrospectively reviewed patient and surgical characteristics as predictors of post-operative hematoma in 382 total elbow arthroplasty (196 primary, 157 revision, and 29 conversion) between May 2004 and February, 2017. For comparison of outcomes, cases were matched (1:2) with controls by age, gender, type of surgery, and surgical indication.

Development and validation of a predictive model for outcomes in shoulder arthroplasty: a multicenter analysis of nearly 2000 patients.

Background: Guiding expectations following shoulder arthroplasty is important in improving patient satisfaction. The purpose of this study was to develop a predictive model to calculate 2-year American Shoulder and Elbow Surgeons (ASES) scores in shoulder arthroplasty patients from a comprehensive set of preoperative patient factors and types of arthroplasty performed.

Methods: This retrospective multicenter study included 1947 shoulder arthroplasties performed from 2010 to 2015 at 3 high-volume centers.

Symptomatic aseptic loosening of a short humeral stem following anatomic total shoulder arthroplasty.

Introduction: The rate of aseptic humeral component loosening with standard-length stems is historically so low (0.3%) that presence of humeral loosening was given substantial weight in defining periprosthetic shoulder infection by the International Consensus Meeting (ICM) in 2018. This study aims to confirm that the historically low rate of humeral stem aseptic loosening is not affected by the adoption of a novel short humeral stem.

Understanding Outcomes and the Ability to Return to Work After Rotator Cuff Repair in the Workers' Compensation Population.

Introduction Patients with a worker compensation claim are associated with a greater probability of continued symptoms and activity intolerance. This study aims to determine predictors of improved patient-reported outcomes in the workers' compensation population. Methods Patients with workers' compensation claims undergoing arthroscopic rotator cuff repair between 2010 and 2015 were included.

Is D-dimer a Reliable Serum Marker for Shoulder Periprosthetic Joint Infection?

Background: The diagnosis of periprosthetic shoulder infection continues to be difficult to make with confidence. Serum D-dimer has proven to be effective as a screening tool for periprosthetic joint infection in other major joints; however, it has yet to be evaluated for use in periprosthetic shoulder infection.

Questions/purposes: (1) Is D-dimer elevated in patients with probable or definite periprosthetic shoulder infections? (2) What is the diagnostic accuracy of D-dimer for periprosthetic shoulder infections? (3) What are the diagnostic accuracies of serum tests (erythrocyte sedimentation rate [ESR], C-reactive protein [CRP], and D-dimer), singly and in combination?

Methods: Between March 2016 and March 2020, 94 patients undergoing revision total shoulder arthroplasty (anatomic or reverse) at a single institution had preoperative serum testing with CRP, ESR, and D-dimer.