Recurrent Hemarthrosis Following Knee Arthroplasty Treated with Arterial Embolization.

Recurrent hemarthrosis is an uncommon but troublesome complication following knee arthroplasty. This study reports the results for 13 patients with spontaneous recurrent hemarthrosis after knee arthroplasty treated with arterial embolization. The average interval between arthroplasty and embolization was 47 months (range, 2-103 months), and the average time from onset of hemarthrosis to embolization was 4.

Distal scaphoid resection for degenerative arthritis secondary to scaphoid nonunion: a 20-year experience.

Purpose: To evaluate the long-term results of distal scaphoid excision for degenerative arthritis secondary to scaphoid nonunion and compare them with our original results published in 1999.

Methods: Nineteen patients who were treated by distal scaphoid resection arthroplasty from 1987 through 2010 were included. The mean follow-up was 15 years (range, 10-25 y) vs 4 years in the previous study.

Tissue-engineered articular cartilage exhibits tension-compression nonlinearity reminiscent of the native cartilage.

The tensile modulus of articular cartilage is much larger than its compressive modulus. This tension-compression nonlinearity enhances interstitial fluid pressurization and decreases the frictional coefficient. The current set of studies examines the tensile and compressive properties of cylindrical chondrocyte-seeded agarose constructs over different developmental stages through a novel method that combines osmotic loading, video microscopy, and uniaxial unconfined compression testing.

Knee sports injury is associated with an increased prevalence of unilateral knee replacement: a case-controlled study.

Injury to the knee during athletics is common and may limit future sports participation, but its long-term effects on patients are less well characterized. Examining the development of end-stage osteoarthritis (OA) in these patients may help better clarify this relationship. We hypothesize that sports-related knee injuries are associated with subsequent unilateral knee OA and need for total knee arthroplasty (TKA) relative to bilateral knee replacement.

Surgical exposures of the wrist and hand.

The neurovascular anatomy of the carpus and hand is complex. Therefore, precise exposures are required to avoid iatrogenic injury. In general, dorsal exposures are more forgiving than volar exposures because major neurovascular structures lie on the volar aspect of the hand and fingers; however, volar, ulnar, and radial approaches to the carpal bones are also commonly used.

Musculoskeletal disorders among spine surgeons: results of a survey of the Scoliosis Research Society membership.

Study Design: Survey of surgeon members of the Scoliosis Research Society.

Objective: To assess the prevalence of musculoskeletal disorders (MSDs) among spine surgeons.

Summary Of Background Data: Spinal deformity surgery is characterized by long duration and repetitive, forceful tasks.

Athletic performance outcomes following lumbar discectomy in professional basketball players.

Study Design: Retrospective case-control study.

Objective: To quantify the athletic performance profiles after lumbar discectomy (LD) in a cohort of National Basketball Association (NBA) players in comparison with a control group of matched NBA players who did not undergo LD during the same study period.

Summary Of Background Data: LD provides symptomatic relief and improved functional outcomes in the majority of patients as assessed by validated measures such as Oswestry Disability Index, Visual Analog Scale, and Short Form-36 (SF-36).

Are away rotations critical for a successful match in orthopaedic surgery?

Surveys have suggested one of the most important determinants of orthopaedic resident selection is completion of an orthopaedic clerkship at the program director's institution. The purpose of this study was to further elucidate the significance of visiting externships on the resident selection process. We retrospectively reviewed data for all medical students applying for orthopaedic surgery residency from six medical schools between 2006 and 2008, for a total of 143 applicants.

The mandibular angle as a landmark for identification of cervical spinal level.

Study Design: Retrospective radiographic review.

Objective: To determine the utility of the mandibular angle as a landmark for identification of cervical spinal level.

Summary Of Background Data: Improper localization of the skin incision during anterior cervical spine surgery may lead to increased technical difficulty of the surgery.