[Effectiveness of structural bone graft in total hip arthroplasty for Hartofilakidis type developmental dysplasia of the hip].

Objective: To summarize the effectiveness of acetabulum reconstruction with autologous femoral head structural bone graft in total hip arthroplasty (THA) for Hartofilakidis type Ⅱ developmental dysplasia of the hip (DDH).

Methods: A clinical data of 24 patients (27 hips) with Hartofilakidis type Ⅱ DDH, who underwent acetabulum reconstruction with autologous femoral head structural bone graft in primary THA between October 2012 and October 2020, was retrospectively analyzed. There were 3 males and 21 females, with an average age of 40 years (range, 20-58 years).

[RESEARCH OF ACETABULAR ORIENTATION DETERMINATION AND ACCURACY IN TOTAL HIP ARTHROPLASTY FOR BONY ANKYLOSED HIP].

Objective: To explore the method of acetabular orientation determination in total hip arthroplasty (THA) for bony ankylosed hip and the accuracy of the postoperative evaluation.

Methods: Between January 2009 and March 2013, 33 consecutive patients (49 hips) underwent THA. There were 25 males and 8 females with a mean age of 35.

[Total hip arthroplasty for non-functional bony ankylosed hip in young and middle-aged patients].

Objective: To explore the effectiveness of total hip arthroplasty (THA) for non-functional bony ankylosed hip in young and middle-aged patients.

Methods: Between January 2010 and March 2013, 14 cases (19 hips) of non-functional bony ankylosed hip were treated by THA. There were 9 males and 5 females, aged 37.