Results published in The Journal of Bone and Joint Surgery showed patients with either varus or valgus malalignment of the coronal plane tibiotalar angle who underwent mobile-bearing total ankle arthroplasty had similar outcomes compared to patients with neutral alignment.
Researchers categorized 140 patients who underwent primary total ankle arthroplasty with a mobile-bearing Hintegra prosthesis (Newdeal) into varus, valgus or neutral groups according to the preoperative coronal plane tibiotalar angle. Preoperatively and at final follow-up, researchers assessed the ankle osteoarthritis scale pain and disability score, American Orthopaedic Foot & Ankle Society ankle-hindfoot score, VAS pain score, SF-36 physical component summary score and range of motion. Researchers also collected radiographs preoperatively and at 1-month, 3-months, 6-months and 12-months postoperatively and annually thereafter.
At final follow-up, results showed no differences between the varus, valgus and neutral groups in regard to mean ankle osteoarthritis scale pain and disability score, American Orthopaedic Foot & Ankle Society ankle-hindfoot score, SF-36 physical component summary score, VAS pain score and ankle range of motion. Compared with the neutral group, researchers found the varus group had a significantly less corrected degree of coronal alignment, as well as significantly more concomitant procedures.
The three groups showed no differences in the prevalence of major complications, according to results. At a mean follow-up of 7.3 years, researchers found an overall probability of implant survivorship of 91.1%. – by Casey Tingle
Disclosures: Lee reports he received grants from Korea Health Industry Development Institute and Chonnam National University Hospital Biomedical Research Institute. Please see the full study for a list of all other authors’ relevant financial disclosures.