Treatment of local talus osteochondral defects using mosaic autogenous osteochondral plasty

Abstract

The authors presented the brief incidence analysis of talus osteochondral defect (local joint surface osteonecrosis of the anklebone), its etiology, pathogenesis, symptoms, modern diagnostic algorithm and described proposed surgical procedure. The operation consists of ankle joint arthrotomy, osteonecrotic tissue resection, harvesting of cylindrical mosaic osteochondral graft from low weightbared region of femoral knee joint surface and its implantation into resection cave of the anklebone. The indications to supramalleolar osteotomy for concomitant ankle frontal deformities are grounded. Rigid osteosynthesis and early movements in ankle joint are recommended. Eighteen patients with age from 20 to 58 years old were operated: 8 men and 10 women. In 13 cases (72.3%) the lesion was found in medial edge of talus trochlea, and 5 (27.7%) were lateral lesions. Treatment results of 18 patients evaluated according AOFAS score (H. Kitaoka) improved after operation from (38.2+3.3), to (88.9+3.6) when assessed one year after surgery. Two clinical case reports are presented.

Keywords

• локальный остеонекроз таранной кости
• мозаичная остеохондропластика
• надлодыжечная остеотомия
• ankle bone
• talus trochlea
• mosaic osteochondral grafting
• supramalleolar osteotomy