Surgical Complications in Management of Primary Synovial Chondromatosis in the Distal Interphalangeal Joint: A Case Report.

Case: A 60-year-old right-hand-dominant woman experienced progressive enlargement of a mass over the index distal interphalangeal (DIP) joint over 5 years, leading to joint destruction and swan neck deformity. Radiography showed arthritis, erosion, and calcific deposition. Surgical intervention included mass excision, synovectomy, and DIP joint arthrodesis.

A retrospective analysis of quality of life domains impacted by distal radius fracture and ulnar neuropathy.

Background: Distal radius fractures (DRF) and ulnar neuropathy (UNE) present with reduced motor function, restricted range of motion, pain, and reduced grip strength that may lead to similar treatment approaches. With rapid and insidious onset for DRF and UNE, respectively, the contextual factors impacting an individuals' experience with the condition can vary.

Purpose: The aim of this secondary analysis is to compare ratings of quality of life (QoL) domains prior to treatment and 3 months post treatment for DRF and UNE.

Does Improved Resection Plane Coverage During Shoulder Arthroplasty Influence Proximal Humeral Bone Stress? A Comparison of Circular vs. Elliptical Humeral Heads.

Introduction: Stress shielding remains a concern following total shoulder arthroplasty using press-fit short humeral stems. While the effect of alterations in implant geometry, positioning, and sizing on stress shielding have been investigated, the effects of coverage of the cortical boundary of the resection plane have not yet been fully explored. The purpose of this study was to quantify the effect of improved cortical coverage using elliptical vs.

A Scoping Review of Interventions Aimed at Reducing Fear of Falling in Older Adults With Orthopedic Conditions.

Background And Purpose: Fear of falling (FoF) is a persistent anxiety regarding the risk of falling, which can even impact individuals without a history of falls. Fear of falling has been associated with decreased physical functioning and increased risk of falls. Most interventions have focused on reducing FoF in healthy older adults.

Reverse Shoulder Arthroplasty Implant Design and Configuration has a Significant Effect on Conjoint Tendon Impingement.

Background: Anterior shoulder pain after reverse shoulder arthroplasty (RSA) is not uncommon and may be due to humeral impingement against the conjoint tendon during internal rotation (IR). It is unknown what effect different implant designs and configurations have on conjoint tendon impingement. The purpose of this study was to investigate the influence of several RSA implant design parameters on conjoint tendon impingement during IR.

Hands Up Program: Results of a feasibility study of a randomized controlled trial of a bone health exercise and education program for adults aged 50-65 post distal radius fracture.

Purpose: Distal radius fractures (DRF) that occur from a fall from level ground are considered fragility fractures and may be the first indication that someone has compromised bone mineral density and is at risk of having osteoporosis. Women at about 50 years of age experience a dramatic increase risk of these fractures. Rehabilitation after DRF focuses on restoring range of motion and strength in the wrist, but rarely address future bone health concerns.

Risk Factors for Neonatal Clavicular Fractures: A Population-Based Case-Control Study.

Background: Neonatal clavicular fractures represent the most common fracture during delivery. We aimed to define risk factors associated with these fractures in a large population-based database.

Methods: Data were extracted from Clalit Health Services' electronic health records from 2000 to 2020.

An in vitro study of glenoid implant peripheral peg interface mechanics during eccentric loading and lift-off.

Glenoid implants used in anatomic total shoulder arthroplasties typically incorporate peripheral pegs as a design feature to support eccentric loads. These peripheral pegs and the implant-cement-bone interface undergo substantial cyclic tensile-compressive loads during normal activity. Therefore, these pegs are of interest in translating the micromechanics of local implant fixation failure to the biomechanics of gross anatomic failure of the glenoid implant after total shoulder arthroplasty.

Superior capsular reconstruction using the long head of biceps tendon: a biomechanical assessment of tenodesis location and angle of fixation.

Background: Massive irreparable rotator cuff tears (MIRCTs) treated with superior capsular reconstruction (SCR) using the long head of the biceps tendon have shown satisfactory early results. Different techniques and positions for biceps tenodesis have been described. This study aimed to evaluate the effect of tenodesis location and glenohumeral fixation angle for graft tensioning on the biomechanics of an SCR using a single-strand biceps technique.

Reliability, validity, and responsiveness of pinch strength assessment: a systematic review.

Purpose: To summarize and critically appraise the quality of studies investigating psychometric properties of pinch strength assessment.

Methods: Medical literature up to February 2024 was searched for studies reporting on at least one measurement property of pinch strength assessment. The quality of the evidence and the risk of bias were rated using COSMIN 2018 guidelines.

Stemless reverse shoulder arthroplasty neck shaft angle influences humeral component time-zero fixation and survivorship: a cadaveric biomechanical assessment.

Background: Stemless humeral components are being clinically investigated for reverse shoulder arthroplasty (RSA) procedures. There is, however, a paucity of basic science literature on the surgical parameters that influence the success of these procedures. Therefore, this cadaveric biomechanical study evaluated the neck shaft angle (NSA) of implantation on the survivability and performance of stemless RSA humeral components during cyclical loading.

Idiopathic avascular necrosis of the scaphoid (Preiser's disease): a case report and review of the literature.

Idiopathic avascular necrosis of the scaphoid bone, Preiser's disease, was originally described as a deteriorative pathology whereby the osseous structure necroses due to loss of blood supply. It may present with multifactorial etiology, which is still largely not well understood. We describe a case of Preiser's disease in a 70-year-old female, with worsening pain and loss of range of motion in her right wrist over a two-year period.

An in vitro comparison of mixed-reality navigation to traditional freehand and patient-specific instrumentation techniques for glenoid guide pin insertion during shoulder arthroplasty.

Background: Accurate insertion of the glenoid guide pin in shoulder arthroplasty (RSA) is important for obtaining optimized glenoid component position and orientation. The objective of this study was to evaluate and compare the accuracy of 3 glenoid guide pin insertion techniques: (1) traditional software planning using freehand guide pin insertion (freehand), (2) guide pin insertion utilizing patient-specific instrumentation (PSI), and (3) using a mixed-reality navigation (MR-NAV) system.

Methods: Twenty (20) computed tomography (CT) scans were obtained from patients exhibiting glenoid erosion patterns according to the Walch and Favard classifications.

Automatic bicipital groove identification in arthritic humeri for preoperative planning: A Random Forest Classifier approach.

The bicipital groove is an important anatomical feature of the proximal humerus that needs to be identified during surgical planning for procedures such as shoulder arthroplasty and proximal humeral fracture reconstruction. Current algorithms for automatic identification prove ineffective in arthritic humeri due to the presence of osteophytes, reducing their usefulness for total shoulder arthroplasty. Our methodology involves the use of a Random Forest Classifier (RFC) to automatically detect the bicipital groove on segmented computed tomography scans of humeri.

The Sensitivity of the Scapholunate Interval and Bony Landmarks to Wrist Rotation on Posteroanterior Radiographs.

Background: The objective of this study was to examine the effect of wrist rotation on the scapholunate interval in the posteroanterior radiograph and to identify radiographic landmarks on the posteroanterior projection that can be used to assess position.

Methods: Eleven healthy cadaveric wrists were radiographed in the neutral position and subsequently were rotated and imaged from 30° pronation to 30° supination in 10° intervals. At each interval, the scapholunate interval was measured as well as the following landmarks: (1) the visible perimeter of the base of the hook of the hamate; (2) the radial-ulnar distribution of the dorsal nonarticular surface of the distal third metacarpal head; (3) the radial-ulnar distribution of the pisiform about the longitudinal axis of the ulna; and (4) the overlap of the pisiform and triquetrum.

A scapular statistical shape model can reliably predict premorbid glenoid morphology in conditions of severe glenoid bone loss.

Background: Knowledge of premorbid glenoid parameters at the time of shoulder arthroplasty, such as inclination, version, joint line position, height, and width, can assist with implant selection, implant positioning, metal augment sizing, and/or bone graft dimensions. The objective of this study was to validate a scapular statistical shape model (SSM) in predicting patient-specific glenoid morphology in scapulae with clinically relevant glenoid erosion patterns.

Methods: Computed tomography scans of 30 healthy scapulae were obtained and used as the control group.

The Kouvalchouk procedure vs. distal tibial allograft for treatment of posterior shoulder instability: the deltoid "hammock" effect exists.

Background: In 1993, Kouvalchouk described an acromial bone block with a pedicled deltoid flap for the treatment of posterior shoulder instability. This procedure provides a "double blocking" effect in that the acromial autograft restores posterior glenoid bone loss and the deltoid flap functions as a muscular "hammock" resembling the sling effect of the conjoint in the Latarjet procedure. The primary aim of this study was to compare the Kouvalchouk procedure to distal tibial allograft (DTA) reconstruction for the management of posterior shoulder instability with associated bone loss, while the secondary aim was to evaluate the deltoid hammock effect.

An evidence-informed rehabilitation management framework for posterior shoulder tightness: A scoping review.

Objective: To systematically scope the literature on posterior shoulder tightness (PST) and define a therapist-instructed and therapist-administered management framework.

Design: Scoping review.

Literature Search: We searched MEDLINE, EMBASE, CINAHL, Scopus and Google Scholar from inception to December 2021.