Validating the Glenoid Track Concept Using Dynamic Arthroscopic Assessment.

Background: Failure after isolated Bankart repair has led surgeons to consider when to address the Hill-Sachs lesion, which is thought to be a contributor to recurrent instability. One approach utilizes the glenoid track concept to determine whether a Hill-Sachs lesion is classified as "off-track," suggesting that the addition of a remplissage procedure may aid stability. However, the accuracy and reliability of using this approach require validation using an appropriate reference.

Graft Healing Is More Important Than Graft Technique: Superior Capsular Reconstruction Versus Bridging Grafts-A Prospective Randomized Controlled Trial.

Purpose: To compare superior capsular reconstruction (SCR) versus bridging graft (BG) for massive irreparable rotator cuff tears (RCTs).

Methods: A prospective double-blind randomized study was conducted to compare SCR versus BG for massive irreparable RCTs. Fifty patients (mean age: 60.

Bony Apprehension Test for Identifying Bone Loss in Patients With Traumatic Anterior Shoulder Instability: A Validation Study.

Background: The presence of bone loss has important implications for the surgical treatment of patients with recurrent shoulder instability. The bony apprehension test (BAT) is a physical examination maneuver that was designed to improve specificity from the anterior apprehension test (AAT) in detecting critical bone loss.

Purpose: The purpose of this study was to compare the BAT with the AAT and relocation test based on their abilities to predict critical bone loss.

Prior mood disorder diagnoses do not relate to current mood disorder symptoms or patient-reported disease severity in rotator cuff patients.

Background: Surgery for rotator cuff syndrome does not always produce symptom improvement. Biological factors may explain some symptoms, but mood disorder symptoms may also contribute. The purpose of this study is to examine the interaction between disease severity, prevalence of mood disorder diagnoses, and current mood disorder symptoms in preoperative rotator cuff patients.

Patient gender and rotator cuff surgery: are there differences in outcome?

Background: Although rotator cuff syndrome is common and extensively studied from the perspective of producing healed tendons, influence of gender on patient-reported outcomes is less well examined. As activity and role demands may vary widely between men and women, clarity on whether gender is an important factor in outcome would enhance patient education and expectation management. Our purpose was to determine if differences exist in patient-reported outcomes between men and women undergoing rotator cuff surgery.

Characteristics and Long-Term Risk of Breast Angiosarcoma.

Background: Angiosarcoma of the breast is rare and aggressive. It can occur as a de novo tumor or secondary to breast cancer treatment. The purpose of this study is to analyze differences between patients with primary and secondary angiosarcoma of the breast and investigate potential risk factors for its development.

Platelet-Rich Plasma in Patients With Partial-Thickness Rotator Cuff Tears or Tendinopathy Leads to Significantly Improved Short-Term Pain Relief and Function Compared With Corticosteroid Injection: A Double-Blind Randomized Controlled Trial.

Purpose: To perform a randomized controlled trial comparing platelet-rich plasma (PRP) with standard corticosteroid (CS) injection in providing pain relief and improved function in patients with rotator cuff tendinopathy and partial-thickness rotator cuff tears (PTRCTs).

Methods: This double-blind randomized controlled trial enrolled patients with ultrasound-proven or magnetic resonance imaging-proven PTRCTs who received either an ultrasound-guided PRP or CS injection. Patients completed patient-reported outcome assessments at baseline and at 6 weeks, 3 months, and 12 months after injection.

Determining the rate of full-thickness progression in partial-thickness rotator cuff tears: a systematic review.

Background: Partial-thickness rotator cuff tears are likely at least as common as full-thickness rotator cuff tears, and it is critical for surgeons to have knowledge of the tear progression rate of partial-thickness rotator cuff tears when determining surgical or nonsurgical treatment. However, a systematic review investigating the rate of tear progression of partial-thickness rotator cuff tears has not been performed. Therefore, the purpose of this study was to systematically review the literature and determine the rate of full-thickness progression in nonoperatively treated partial-thickness rotator cuff tears.

Establishing User Error on the Patient-Reported Component of the American Shoulder and Elbow Surgeons Shoulder Score.

Background: The American Shoulder and Elbow Surgeons (ASES) score is a patient-reported outcome (PRO) questionnaire developed to facilitate communication among international investigators and to allow comparison of outcomes for patients with shoulder disabilities. Although this PRO measure has been deemed easy to read and understand, patients may make mistakes when completing the questionnaire.

Purpose: To evaluate the frequency of potential mistakes made by patients completing the ASES score.

Intersection of catastrophizing, gender, and disease severity in preoperative rotator cuff surgical patients: a cross-sectional study.

Hypothesis And Background: Surgical outcomes are dependent on multiple clinical and patient factors. One patient factor is pain catastrophizing, which is associated with poorer outcomes in other surgical populations. Our purpose was to examine relationships between gender, patient-reported disease severity, and catastrophizing in patients in whom rotator cuff surgery is planned.

Fluoroscopic-guided quadrilateral space block for the treatment of quadrilateral space syndrome - A case report.

We report a case of a 48-year-old female who presented four months following a low-energy trauma with symptoms most consistent with adhesive capsulitis. An MRI demonstrated extensive patchy areas of intramuscular edema-like signal involving the lateral head of the deltoid with associated muscle atrophy, in keeping with a subacute denervation injury. She was diagnosed with quadrilateral space syndrome (QSS) and successfully treated with an fluoroscopic-guided corticosteroid injection.

Clinical results and complications following surgical management of symptomatic os acromiale: a systematic review.

Background: This review compares the outcomes and complication rates of three surgical strategies used for the management of symptomatic os acromiale. The purpose of this study was to help guide best practice recommendations.

Methods: A systematic review of nine prospective studies, seven retrospective studies, and three case studies published across ten countries between 1993 and 2018 was performed.

Exertional Supraspinatus Syndrome: A Report of Two Cases.

Case: We present 2 unique cases of exertional supraspinatus syndrome related to overexertion in 2 young men. In both cases, the diagnosis was delayed because the symptom was nonspecific shoulder pain; however, progressive pain, an elevated creatine kinase (CK) level, and either increased compartmental pressures or findings on magnetic resonance imaging eventually led to the appropriate diagnosis.

Conclusion: The terms "supraspinatus compartment syndrome" and "supraspinatus rhabdomyolysis" are inappropriately used interchangeably.

Stereotactic Body Radiation Therapy Delivery in a Genetically Engineered Mouse Model of Lung Cancer.

Purpose: To implement clinical stereotactic body radiation therapy (SBRT) using a small animal radiation research platform (SARRP) in a genetically engineered mouse model of lung cancer.

Methods And Materials: A murine model of multinodular Kras-driven spontaneous lung tumors was used for this study. High-resolution cone beam computed tomography (CBCT) imaging was used to identify and target peripheral tumor nodules, whereas off-target lung nodules in the contralateral lung were used as a nonirradiated control.

Bowler's thumb: ultrasound diagnosis of a neuroma of the ulnar digital nerve of the thumb.

Bowler's thumb is a rare traumatic neuropathy of the ulnar digital nerve of the thumb. We present a case of bowler's thumb in a 21-year-old male recreational bowler who presented with a painful mass on the ulnar side of the right thumb. Magnetic resonance (MR) imaging of the hand was inconclusive.

Iatrogenic urinary tract injuries: etiology, diagnosis, and management.

Iatrogenic injury to the urinary tract, including the kidneys, ureters, bladder, and urethra, is a potential complication of surgical procedures performed in or around the retroperitoneal abdominal space or pelvis. While both diagnostic and interventional radiologists often play a central and decisive role in the identification and initial management of a variety of iatrogenic injuries, discussions of these injuries are often directed toward specialists such as urologists, obstetricians, gynecologists, and general surgeons whose procedures are most often implicated in iatrogenic urinary tract injuries. Interventional radiologic procedures can also be a source of an iatrogenic urinary tract injury.

Outcomes After Hemiarthroplasty for Proximal Humerus Fracture Are Significantly Affected by Hand Dominance.

Objectives: Hand dominance has been reported to be an important factor affecting outcomes after upper extremity trauma but remains unstudied after hemiarthroplasty for fracture. This study determined whether dominance affected outcomes after hemiarthroplasty for proximal humerus fractures.

Design: Retrospective cohort study.

Real-time simulator for designing electron dual scattering foil systems.

The purpose of this work was to develop a user friendly, accurate, real-time com- puter simulator to facilitate the design of dual foil scattering systems for electron beams on radiotherapy accelerators. The simulator allows for a relatively quick, initial design that can be refined and verified with subsequent Monte Carlo (MC) calculations and measurements. The simulator also is a powerful educational tool.

Development of an orthopedic surgery trauma patient handover checklist.

Background: In surgery, preoperative handover of surgical trauma patients is a process that must be made as safe as possible. We sought to determine vital clinical information to be transferred between patient care teams and to develop a standardized handover checklist.

Methods: We conducted standardized small-group interviews about trauma patient handover.

Feasibility and fidelity of practising surgical fixation on a virtual ulna bone.

Background: Surgical simulators provide a safe environment to learn and practise psychomotor skills. A goal for these simulators is to achieve high levels of fidelity. The purpose of this study was to develop a reliable surgical simulator fidelity questionnaire and to assess whether a newly developed virtual haptic simulator for fixation of an ulna has comparable levels of fidelity as Sawbones.

A comparison of orthopaedic resident performance on surgical fixation of an ulnar fracture using virtual reality and synthetic models.

Background: Surgical trainees develop surgical skills using various techniques, with simulators providing a safe learning environment. Fracture fixation is the most common procedure in orthopaedic surgery, and residents may benefit from simulated fracture fixation. The performance of residents on a virtual simulator that allows them to practice the surgical fixation of fractures by providing a sense of touch (haptics) has not yet been compared with their performance using other methods of practicing fracture fixation, such as a Sawbones simulator model.

Interprosthetic humeral fracture revision using a tibial allograft total elbow prosthetic composite in a patient with hemophilia A : a case report.

Introduction: Interprosthetic fractures of the humerus are rare. Revisions of total elbow arthroplasty components in these cases are difficult. We report the first case of a patient with hemophilia who underwent a revision with a tibial allograft prosthetic composite without the need for hardware augmentation.

Proteomic analysis of survival of Rhodococcus jostii RHA1 during carbon starvation.

Rhodococcus jostii RHA1, a catabolically diverse soil actinomycete, is highly resistant to long-term nutrient starvation. After 2 years of carbon starvation, 10% of the bacterial culture remained viable. To study the molecular basis of such resistance, we monitored the abundance of about 1,600 cytosolic proteins during a 2-week period of carbon source (benzoate) starvation.

7-ketocholesterol catabolism by Rhodococcus jostii RHA1.

Oxysterols from steroid autooxidation have numerous harmful effects, but their biodegradation is poorly understood. Microarrays were used to study mineralization of the most common oxysterol, 7-ketocholesterol (7KC), by Rhodococcus jostii RHA1. Growth on 7KC versus growth on cholesterol resulted in 363 differentially expressed genes, including upregulation of two large gene clusters putatively encoding steroid catabolism.