Autologous chondrocyte implantation: cells phenotype and proliferation analysis.

The phenotype and proliferation of human chondrocytes in culture were analyzed before they were implanted as autologous graft in cartilage lesions. During ten autologous chondrocyte implantations in articular cartilage lesions of the knee in ten patients, small amounts of cells to be implanted were collected and analyzed by morphology, cytochemistry (alcian blue, safranin-O), and immunocytochemistry (antibodies anti-S100 protein, anti-collagen types I and II, anti-chondroitin-S). In four cases the cells were also cultured for 3 weeks.

The modified Jones procedure for pes cavovarus with claw hallux.

The purpose of this study is to describe long-term outcomes of the modified Jones procedure for pes cavovarus with claw hallux deformity. Jones originally described an isolated transfer of the extensor hallucis longus tendon. However, this technique does not correct and stabilize the claw hallux deformity.