Early clinical and radiographic outcomes of anatomic total shoulder arthroplasty with a biconvex posterior augmented glenoid for patients with posterior glenoid erosion: minimum 2-year follow-up.

Background: Glenoid bone loss in anatomic total shoulder arthroplasty (aTSA) remains a controversial and challenging clinical problem. Previous studies have shown high rates of glenoid loosening for aTSA in shoulders with retroversion, posterior bone loss, and posterior humeral head subluxation. This study is the first to present minimum 2-year follow-up data of an all-polyethylene, biconvex augmented anatomic glenoid component for correction of glenoid retroversion and posterior humeral head subluxation.

Elbow hemiarthroplasty for intra-articular distal humerus fractures: results and technique.

Purpose: The purpose of this study was to report results of elbow hemiarthroplasty for comminuted, intra-articular distal humerus fractures in low-demand elderly female patients.

Methods: This is a retrospective case series of eight patients who underwent elbow hemiarthroplasty for comminuted, intra-articular distal humerus fractures between 2015 and 2019. Patients were considered for the procedure if the humeral fractures were deemed nonreconstructable by open reduction internal fixation.

Distal clavicle autograft augmentation for glenoid bone loss in revision shoulder arthroplasty: results and technique.

Background: Structural bone graft for reconstruction of glenoid bone stock is often necessary in the setting of revision shoulder arthroplasty. This study introduces a new structural autograft technique using the distal clavicle for treatment of glenoid bone loss in the setting of revision shoulder arthroplasty.

Methods: This is a retrospective, single-surgeon study of patients with significant glenoid bone loss requiring revision shoulder arthroplasty with autologous distal clavicle bone grafting to the glenoid.

Radiographic evaluation of short-stem press-fit total shoulder arthroplasty: short-term follow-up.

Background: Humeral loosening is an uncommon etiology for revision shoulder arthroplasty. We aimed to evaluate the radiographic and clinical outcomes of a short-stem press-fit humeral component after primary total shoulder arthroplasty.

Methods: We reviewed our patient database, from January 2008 to December 2011, for primary total shoulder arthroplasties performed with a short-stem press-fit humeral component.

Radiographic and clinical outcomes of total shoulder arthroplasty with an all-polyethylene pegged bone ingrowth glenoid component: prospective short- to medium-term follow-up.

Background: Glenoid components often cause total shoulder arthroplasty failure. This study examines short-term to midterm radiographic and clinical results of a hybrid glenoid component with 3 cemented peripheral pegs and a central peg, which allows biologic fixation with use of native humeral head autograft.

Methods: In 4 years, 80 glenoid components were implanted during primary total shoulder arthroplasty with at least 2-year follow-up data.

Direct repair for managing acute and chronic lateral ulnar collateral ligament disruptions.

Purpose: Acute elbow injuries that disrupt the lateral ulnar collateral ligament and result in posterolateral rotatory instability usually require surgical treatment. The 2 technical options reported, direct repair and use of a palmaris longus tendon graft, have usually favored the use of the graft. To balance this emphasis, we report our experience with direct repair of the humeral origin in cases of trauma, whether acute, delayed, or recurrent.

Optimization of the racking hitch knot: how many half hitches and which suture material provide the greatest security?

Background: Reliable methods of fixation of soft tissue and bone are of utmost importance in reconstructive shoulder surgery and in many orthopaedic applications. Current methods of securing lesser tuberosity osteotomies performed during shoulder arthroplasty and tuberosity fixation performed during repair of proximal humeral fractures often rely on alternating half hitches or surgeon's knots regardless of the suture configuration used passing through the tissue (eg, Mason-Allen, Krackow). The racking hitch knot in contrast to half hitches allows sequential tightening, even under tension, with minimal risk of knot slippage or premature locking.

Incidence of postoperative elbow contracture release in New York State.

Purpose: To determine the incidence of elbow contracture requiring release after surgically treated elbow trauma and to identify patient, injury, and treatment factors that may predict contracture development.

Methods: The New York Statewide Planning and Research Cooperative System database identified 32,708 patients who were surgically treated for elbow trauma from 1997 to 2009. The database identified 270 of those patients who underwent subsequent contracture release.

The influence of gravity on the unstable elbow.

Background: Safely permitting early range of motion after a destabilizing injury to the elbow is believed to optimize return of function. However, the range-of-motion exercises must be balanced against the risk of re-dislocation or subluxation. The goal of this study was to describe the position of the upper limb that permitted the greatest motion while minimizing the risk of re-dislocation or subluxation.

Foreign-body reaction and osteolysis induced by an intraosseous poly-L-lactic Acid suture anchor in the wrist: case report.

Polyglycolic acid and poly-L-lactic acid have become popular choices for bioabsorbable anchor fixation in the hand and wrist. We report a case of osteolysis, synovitis, and chondral erosion secondary to a poly-L-lactic acid suture anchor in the wrist.

The glenoid in total shoulder arthroplasty.

Management of glenohumeral arthrosis with a total shoulder prosthesis is becoming increasingly common. However, failure of the glenoid component remains one of the most common causes for failure. Our understanding of this problem has evolved greatly since the first implants were placed in the 1970's.

Sliding oblique versus segmental resection osteotomies for lesser metatarsophalangeal joint pathology.

Background: Oblique shortening osteotomy (Weil) can address lesser MP pathology but can have a high rate of complications. The purpose of this study was to review the results of a modification of the Weil osteotomy, the segmental resection metatarsal osteotomy.

Materials And Methods: Between 2004 and 2006, 48 patients underwent the segmental resection osteotomy with a mean followup of 13 (range, 6 to 26) months.

MRI analysis of in vivo meniscal and tibiofemoral kinematics in ACL-deficient and normal knees.

The objectives of this study were to analyze simultaneously meniscal and tibiofemoral kinematics in healthy volunteers and anterior cruciate ligament (ACL)-deficient patients under axial load-bearing conditions using magnetic resonance imaging (MRI). Ten healthy volunteers and eight ACL-deficient patients were examined with a high-field, closed MRI system. For each group, both knees were imaged at full extension and partial flexion ( approximately 45 degrees ) with a 125N compressive load applied to the foot.

Behavioral coping strategies in a cichlid fish: the role of social status and acute stress response in direct and displaced aggression.

The African cichlid fish, Astatotilapia burtoni, has a complex social system with a sophisticated social hierarchy that offers unique opportunities to understand how social rank and its physiological substrates relate to behavioral strategies. In A. burtoni, a small fraction of the males are dominant (T, territorial), as distinguished by being large, brightly colored, reproductively active, and aggressively defending territories.