March 05, 2015
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No adverse clinical outcomes found in patients with severe varus deformity after mini-midvastus TKA

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In patients with severe varus deformity of the knee, mini-midvastus total knee arthroplasty had no adverse clinical outcomes as a result of poor implant position, according to study results.

Researchers compared 52 patients with a tibiofemoral mechanical axis of 195° or greater with a matched control group of 55 patients with a tibiofemoral mechanical axis of less than 195°. The researchers obtained clinical and radiographic evaluations according to the American Knee Society rating system preoperatively and postoperatively and compared postoperative patient satisfaction among the two groups. Patients were followed-up for a mean of 3 years.

Compared with the control group, the study group had inferior clinical knee and function scores and range of motion after surgery; however, both groups of patients were satisfied with the clinical results at the latest follow-up, and the researchers found no significant differences in the knee and function scores.

According to radiographic evaluation results, there were no postoperative differences between the two groups in the mechanical axis, femoral component valgus angle and tibial component valgus angle or any outliers of the radiographic parameters. – by Casey Tingle

Disclosure: The researchers report no relevant financial disclosures.