| ObjectiveTo analysis the results of clinical data and follow-up in 3 years, and to investigate the influencing factors in patients with ankylosing spondylitis (AS) at non-functional positions after total hip arthroplasty, including the operative time, surgical procedure and prosthesis choice. The study is to provide some clinical experiences for AS.Materials and Methods14 patients with ankylosing spondylitis and hip ankyloses were performed with total hip arthroplasties since 2011, including 12 males (23hips) and 2 females (3hips). The age at the time of the surgery ranged from 18 to 45 years. All the patients fulfilled the diagnostic criteria of ankylosing spondylitis (New York criteria of AS,1984). The average Harris grade was 28 points. Cementless prosthesis were used in all patients, and total hip arthroplasty was performed with an improved lateral approach. Regular exercise was performed by all patients. A follow-up for 18 to 30(mean 24) months was followed. The clinical outcome was evaluated with radiologic examination and Harris scores after operation.Results14 patients were followed for the average time of 24 months. According the results of the follow-up, pain was totally relieved in all patients, two patients endured slight pain in 3 months. No dislocation, revision, infection and DVT was performed in all patients. The Harris score for 62 to 82 (mean 71). Postoperative average total range of movement of hip was from 80°to 100°(mean 60°), the abduction and flexion were improved. The deformity was rectified. The positions of the prosthesis and ranges of motion of the hips were favorable. No dislocations of the prosthesis were found in the patients. The Harris scores were evidently improved after surgery.ConclusionFor patients with ankylosing spondylitis and hip ankyloses at non-functional positions, total hip replacement should be taken as early as possible. With proper prosthesis and precise operative technique, better results can be acquired. |
PDF Full Text Request