Douglas L. Cerynik

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This study examined the incidence and rates of knee arthroscopy in patients older than 65 years and the risk of subsequent knee arthroplasty. Medicare claims data (1997-2006, 5% sample) were used to identify 78,137 knee arthroscopy patients. Performance of arthroscopy increased 56.1%. Prevalence increased 44.6% from 362.2 to 523.7 per 100,000 Medicare(More)
Surgical treatment for chondral defects of the knee in competitive running and jumping athletes remains controversial. This study evaluated the performance outcomes of professional basketball players in the National Basketball Association (NBA) who underwent microfracture. Data from 24 professional basketball players from 1997 to 2006 was obtained and(More)
Massive osteolytic bone loss in revision total knee arthroplasty has been an uncommon challenge. From 2001 to 2002, 11 knees in 10 patients underwent revision of failed modular PFC (Johnson and Johnson Orthopaedics, Raynham, Mass) total knee arthroplasties with distal femoral allografts and long-stemmed revision implants for massive osteolytic induced(More)
OBJECTIVE To elucidate mechanism of injury, nonoperative protocols, surgical techniques, rehabilitation schedules, and return to sports guidelines for partial and complete triceps tendon injuries. DATA SOURCES The PubMed and OVID databases were searched in 2010 and peer-reviewed English language articles in 2011. MAIN RESULTS After a fall on an(More)
Preoperative classification of acetabular bone loss in revision total hip arthroplasty has been problematic. An evidence-based approach involves having a validated and widely accepted system of classification. A prerequisite would be a system that describes each defect in terms that are mutually exclusive, hierarchical, surgically relevant, and(More)
A private payer database was used to examine the incidence and rates of knee arthroscopy in patients less than 65 years of age and the subsequent risk of knee arthroplasty. Time to event analysis was performed using the Kaplan-Meier method; also, Cox regression analysis was used to evaluate the relative risk of subsequent knee arthroplasty for arthroscopic(More)
To demonstrate that lateral to medial patellofemoral force and pressure ratios could be a surrogate marker of retinacular tension and patellar tracking. The patellofemoral forces of six knees from three fresh-frozen half-body female cadavers were evaluated with a capacitive sensor under simulated operative conditions in six staged clinical scenarios: native(More)
Introduction. When using the double interval slide technique for arthroscopic repair of chronic large or massive rotator cuff tears, the posterior interval release is directed toward the scapular spine until the fat pad that protects the suprascapular nerve is reached. Injury to the suprascapular nerve can occur due to the nerve's proximity to the operative(More)
BACKGROUND One complication of TKA is postoperative anterior knee pain. Balancing retinacular tissue tension to improve patellar tracking is essential in preventing pain. Lateral release might help balance tension although the quantitative changes in patellofemoral force and pressure differentials after lateral release are unknown. QUESTIONS/PURPOSES We(More)
BACKGROUND A complete rupture of the Achilles tendon is a devastating injury. Variables affecting return to competition and performance changes for National Basketball Association (NBA) players are not readily evident. HYPOTHESIS Players in the NBA who ruptured their Achilles tendons and who underwent surgical repair would have more experience in the(More)