Humeral and Glenoid Component Malposition in Revision Shoulder Arthroplasty: A Retrospective, Cross-sectional Study.

Background: The purpose of this study was to assess the incidence of glenoid and humeral component malposition in failed primary shoulder arthroplasty requiring revision. We hypothesized that glenoid and humeral component malposition would be a prevalent feature in cases requiring revision arthroplasty for primary anatomic TSA, primary RSA, and primary hemiarthroplasty procedures.

Methods: A retrospective cross-sectional study was performed focusing on identifying the incidence of malpositioned components in shoulder arthroplasty in quantitative and qualitative reviews.

Factors Influencing Outcome After Shoulder Arthroplasty (FINOSA Study): Protocol of a Prospective Longitudinal Study With Randomized Group Allocation.

Background: There is an increasing need for evidence-based postoperative rehabilitation strategies to optimize patient outcome. Knowledge of potential prognostic factors could steer the development of rehabilitation protocols and could result in better treatment outcomes and higher patient satisfaction.

Objective: This study aimed to investigate which potential prognostic factors predict baseline shoulder pain and function and its evolution in the first 2 years following surgery, in patients with total shoulder arthroplasty.

Effects of pre-operative patient expectations on the outcome after total shoulder arthroplasty: A systematic review.

Aim: To synthesize the evidence considering effects of pre-operative patient expectations on the post-operative outcomes in patients with total shoulder arthroplasty.

Methods: PubMed, Web of Science and Cochrane were searched for relevant studies. Studies before 2000 were excluded.

Pectoralis Major Tendon Tear in a 13-Year-Old Female High-Level Gymnastic Athlete: A Case Report.

Tears of the pectoralis major tendon have become more common due to the rising popularity of weightlifting and contact sports, yet they have not been described in young adolescents. A 13-year-old female high-level gymnastic athlete presented with left shoulder pain after a fall off the uneven bars. After excluding other diagnoses, magnetic resonance imaging (MRI) revealed a pectoralis major tendon tear.

Differences in biomechanical and metabolic factors between patients with frozen shoulder and asymptomatic individuals. A cross-sectional study.

Background: the pathogenesis of frozen shoulder (FS) is thought to be one of inflammation and fibrosis possibly influenced by hyperglycemia. Biomechanical changes of the shoulder joint in terms of muscle strength, scapular kinematics and proprioception might occur in FS.

Objectives: to compare muscle strength, scapular kinematics, proprioception, and blood glucose levels within patients with FS and to asymptomatic individuals.

Clinical and radiological outcome of all-suture anchors in shoulder and elbow surgery.

Background: All-suture anchors (ASAs) are noted to cause various bone reactions when used in upper limb surgery but clinical implications are unknown.

Methods: 88 shoulders and 151 elbows with a mean follow-up of 47.1 ± 17.

Exploration of the clinical course of frozen shoulder: A longitudinal multicenter prospective study of functional impairments.

Background: Contradictory evidence exists regarding the clinical course of frozen shoulder (FS).

Objectives: To explore the clinical course of FS regarding disabilities, pain, range of motion (ROM), muscle strength, scapular upward rotation, and proprioception and to establish longitudinal correlations between these variables.

Methods: Patients with FS were prospectively followed for 9 months at 3-month intervals.

Understanding the clinical profile of patients with frozen shoulder: a longitudinal multicentre observational study.

Introduction: There is a large diversity in the clinical presentation of frozen shoulder (FS) and the clinical outcome is not always satisfactory. The aim of the current study was to examine to what extent range of motion (ROM) limitation, metabolic factors (diabetes mellitus and thyroid disorders), autonomic symptoms and pain sensitivity may contribute to the prognosis in terms of shoulder pain and disability and quality of life in patients with FS.

Methods: Patients with stage 1 or 2 FS were longitudinally followed-up during 9 months after baseline assessment.

An Instrument-Assisted Coracoid Pain Test: An Exploratory Diagnostic Accuracy Study.

The coracoid pain test (CPT) could contribute to the diagnosis of frozen shoulder (FS) with palpation. However, due to assessor performance these values might be unreliable. Therefore, the aim was to explore the diagnostic accuracy of an instrument-assisted CPT and two alternative approaches (pain severity and side comparison) for assistance in the diagnosis of FS.

Factors associated with better treatment outcome of physical therapy interventions after shoulder arthroplasty: A systematic review.

Objective: To summarize factors that are associated with a better treatment outcome after post-operative physical therapy in patients with shoulder arthroplasty.

Data Sources: PubMed, Cochrane, and Web of Science.

Review Methods: Studies examining factors that are associated with a better outcome after post-operative physical therapy interventions in patients with shoulder arthroplasty were included.

Tendon progenitor cells as biological augmentation improve functional gait and reduce scar formation after rotator cuff repair.

Background: High rates of structural failure are reported after rotator cuff repairs due to inability to recreate the native enthesis during healing. The development of biological augmentation methods that mitigate scar formation and regenerate the enthesis is still an unmet need. Since neonatal enthesis is capable of regeneration after injury, this study tested whether delivery of neonatal tendon progenitor cells (TPCs) into the adult injured environment can enhance functional and structural supraspinatus enthesis and tendon healing.

Reverse shoulder arthroplasty for rotator cuff tears with and without prior failed rotator cuff repair: A large-scale comparative analysis.

Background: Large-scale data assessing the effect of a prior failed rotator cuff repair (RCR) on the outcome of reverse shoulder arthroplasty (RSA) is currently lacking. Therefore, this study aimed (1) to assess the course of patients undergoing RCR, specifically focusing on the need for conversion to RSA within two years, and (2) to compare outcomes following RSA performed for rotator cuff tears (RCTs) with and without prior RCR.

Methods: This retrospective cohort study included data from the CMS Data Set (2016-2018).

Prospective multicentre mid-term clinical and radiological outcomes of 159 reverse total shoulder replacements and assessment of the influence of post-operative complications.

Background: The aim of our prospective multicentre study is to evaluate the five-year follow-up outcomes of primary reverse shoulder replacement utilizing two different designs of glenoid baseplates.

Methods: There were 159 reverse shoulder replacements (91 cemented and 68 uncemented stems, 67 Trabecular Metal baseplates and 92 Anatomical Shoulder baseplates in 152 patients (99 women) with a mean age of 74.5 (58-90) years.

An overview of effective and potential new conservative interventions in patients with frozen shoulder.

Frozen shoulder (FS) is a pathology that is difficult to understand and difficult to manage. Over the last ten years, contradictory and new evidence is provided regarding the recovery and its natural course. This narrative review provides new information about the diagnosis and conservative treatment of patients with FS and ongoing research hypotheses that might provide new insights in the pathology and treatment options.

Shoulder arthroplasty for glenohumeral osteoarthritis: results from a comprehensive survey in Belgium and the Netherlands.

The purpose of this survey in Belgium and the Netherlands was to assess treatment variation in glenohumeral osteoarthritis between experienced and less experienced orthopedic surgeons, and to investigate perioperative treatment after shoulder arthroplasty in a large group of orthopedic surgeons. Orthopedic surgeons specialized in shoulder surgery were invited to complete a survey between November 2013 and February 2015. Seventy-one percent of the approached surgeons com-pleted the survey.

Editorial Commentary: Taming Hard Problems With Soft Tissues? Anterior Shoulder Instability After Prior Bone Block Stabilization.

Recurrent anterior shoulder instability after prior bone block stabilization is a therapeutically challenging condition. Historically, repeated glenoid bone grafting has been advocated in such cases to achieve lasting shoulder stability. However, recent insights into the pathomechanics of shoulder instability, especially regarding bipolar bony lesions, have renewed our interest in the arthroscopic treatment of Hill-Sachs lesions and the role of soft-tissue interventions after bone block procedures.

Normal and Pathoanatomy of the Arthritic Shoulder: Considerations for Shoulder Arthroplasty.

The glenohumeral joint is a highly mobile, complex articulation that relies not only on the bony support between the humeral head and glenoid but also on appropriate balance and tension of the surrounding soft-tissue structures. Recreating the normal anatomic relationships is a basic premise in joint arthroplasty, which can be challenging in shoulder arthroplasty, as the normal glenohumeral anatomy has considerable variation from patient to patient. Also, as the anatomy of the glenohumeral joint becomes distorted with advanced shoulder pathology, it becomes a challenge to return the shoulder to its premorbid anatomic state.

Analysis of failures after the Bristow-Latarjet procedure for recurrent shoulder instability.

Purpose: Despite good clinical results and low recurrence rates, post-operative complications of coracoid process transfer procedures are not well understood. This study aims to evaluate the underlying failure mechanism in cases requiring major open revision surgery after prior Bristow or Latarjet stabilization.

Methods: Between January 2006 and January 2017, 26 patients underwent major open revision after primary Bristow or Latarjet procedure.

Bony Reconstruction of the Anterior Glenoid Rim.

Recurrent anterior shoulder instability is associated with glenohumeral bone loss. Glenoid deficiency compromises the concavity-compression mechanism. Medial Hill-Sachs lesions can result in an off-track humeral position.

Accuracy of patient-specific guided implantation of the glenoid component in reversed shoulder arthroplasty.

Background: The aim of this study was to assess the accuracy of patient-specific guided glenoid component implantation in reverse shoulder arthroplasty.

Materials And Methods: 32 reverse shoulder arthroplasties were done using preoperative 3D planning and 4 patient-specific guides to prepare the glenoid and position the glenoid component. Baseplate version, inclination and entry point as well as angulation of the screws were compared to the preoperative plan measured on CT by independent observers.

Can the contralateral scapula be used as a reliable template to reconstruct the eroded scapula during shoulder arthroplasty?

Hypothesis: The contralateral scapula can be used as a reliable template to determine scapular offset, glenoid inclination, and version of the native scapula in view of reconstructing pathologic scapulae.

Methods: Three-dimensional measurements of scapular offset, inclination, and version were performed using data from a set of 50 bilateral computed tomography scans of full scapulae to determine direct side-to-side differences.

Results: The scapula pairs had a mean bilateral difference of 2 mm in offset, 2° in inclination, and 2° in version.

Influence of screw type and length on fixation of anterior glenoid bone grafts.

Background: Bone-grafting procedures for recurrent shoulder instability produce low recurrence rates, although they are associated with complications such as graft non-union. Inadequate screw purchase is considered to play a causative role. However, excessive screw length can endanger neurovascular structures.

Reverse shoulder arthroplasty in young patient with achondroplasia - Ten year follow up: Case report.

Skeletal dysplasia in achondroplasia can affect all body joints - including the glenohumeral joint - and is prone to develop to degenerative osteoarthritis (OA). This may cause pain and mobility problems at young age. Surgical treatment is challenging due to the dysplastic anatomy of the shoulder joint - with a dysplastic deformed short humerus, a small, hypoplastic medialized glenoid and lateralized acromion - and the long life expectancy of these patients.