Posterior arthroscopic excision of bilateral posterior bony impingement syndrome of the ankle: a case report.

The common cause of posterior ankle impingement syndrome (PAIS) is impingement of the os trigonum or talar posterior process. There were few reports of bilateral PAIS of the os trigonum, and bilateral PAIS of the talar posterior process has not been previously reported. The authors report the case of a 32-year-old man who was diagnosed with bilateral PAIS related to a prominent lateral tubercle of the talar posterior process, and who was treated by posterior arthroscopic excision through posterolateral and posteromedial portals in a prone position.

Outcome of cheilectomy in Legg-Calve-Perthes disease: minimum 25-year follow-up of five patients.

The authors report minimum 25-year follow-up results of cheilectomy performed in five hips affected by Legg-Calve-Perthes disease (LCPD) with hinged abduction. All five hips had a poor prognosis in terms of age at disease onset, treatment delay, hinged abduction, subluxation, and extensive head involvement. Cheilectomy, partial capital resection, was made along the indentation groove on the articular surface of the femoral head.