Study Probes Effect of Tibial Component Positioning in Ankle Arthroplasty

Terry Stanton

Acadaveric study of the role of tibial component position in altering kinematics following total ankle arthroplasty (TAA) with a modern fixed-bearing device found normal joint action in the coronal and sagittal planes. Increased internal rotation in the transverse planes was associated with medial positioning of the tibial component.

Study Follows Up on Skeletally Immature Patients with Osteochondritis Dissecans in the Knee

Terry Stanton

Skeletally immature patients who had osteochondritis dissecans (OCD) in the knee demonstrated “clinically promising outcomes” at 14 years of follow-up, according to a study presented during the American Orthopaedic Society for Sports Medicine Annual Meeting.

International Perspectives: Panelists Speak About Periprosthetic Joint Infection Management

Antonia F. Chen, MD, MBA; Claudio Diaz-Ledezma, MD

Remarkable advances in the field of periprosthetic joint infection (PJI) have occurred during the past decade, as a multitude of studies have evaluated the prevention, diagnosis, and treatment of PJI. In addition, the AAOS clinical practice guideline (CPG) on the diagnosis of PJI of the hip and knee has provided a framework for appropriate tests to aid with diagnosis.

Study Compares Tendon Autografts for ACL Reconstruction in Young Females

Maureen Leahy

Research presented during the American Orthopaedic Society for Sports Medicine 2018 Annual Meeting found that the use of bone-patellar tendon-bone (BTB) autograft for anterior cruciate ligament (ACL) reconstruction in females 15–20 years old yielded better outcomes than quadruple hamstring (HS) autograft. The study was presented by Kevin B. Freedman, MD, of Rothman Orthopaedics in Philadelphia. Dr.

Second Look – Clinical

Cost of THA—Total hip arthroplasty (THA) may be more cost-effective than nonoperative management (NM) regardless of patients’ body mass index (BMI), according to a long-term study published in The Journal of Arthroplasty (online). Researchers used a state-transition Markov model that included direct medical costs—but not indirect societal costs—to compare the THA and NM cohorts among six BMI groups in patients > 15 years old.