During the interval from 1991 through 1996, 23 hips in 18 patients (12 male and 6 female) with the diagnosis of AVN had arthroscopy of the hip with prospective follow-up at our institution.

1 Department of Orthopaedic Surgery, General Hospital of Jinan Military Command, 250031 Jinan, China. 2 Research on 2013 stage doctoral student of TCM Orthopaedics, Shandong University of ...