[Artificial total hip arthroplasty with collum femoris preserving for treating hip joint]

Shaohua Ding, Kang Zheng
Chinese Journal of Reparative and Reconstructive Surgery 2010, 24 (1): 1-4

OBJECTIVE: To evaluate the therapeutic outcome of artificial total hip arthroplasty (THA) with collum femoris preserving for hip joint disease in young and middle-aged patients.

METHODS: From March 2002 to March 2005, 26 cases (31 hips) of hip joint disease were treated with artificial THA with collum femoris preserving, including 19 males (23 hips) and 7 females (8 hips) and aged 32-48 years with an average of 37 years. In 31 hips, 17 left hips and 14 right hips were involved. There were 9 cases of osteoarthritis of the hip joint caused by avascular necrosis of the femoral head (ANFH), 7 cases of ANFH, 3 cases of femoral head necrosis caused by dysplasia of acetabular, 1 case of osteoarthritis of the hip joint caused by ankylosing spondylitis, and 2 cases of rheumatoid arthritis; the course of disease was 2-11 years (5.6 years on average). Two cases of femoral neck fracture (Garden IV), and 2 cases of non-union femoral neck fractures (1 for Garden III and 1 for Garden IV), the course of disease was 5 days, 24 months, and 26 months. The prime symptoms were pain, difficult walk and limp. All patients were taken X-ray to exclude osteoporosis.

RESULTS: The right distal femur prosthesis of a bilateral patient cracked owing to excessive amputation of collum femoris, and fracture healed after symptomatic treatment. All the incisions healed by first intention and no complications occurred. All patients were followed up for 4-7 years, with an average of 5.6 years. One case had poor hip function because he did not follow rehabilitation procedure, and the others achieved good outcome with normal gait. One case complained of persistent pain 6 months after operation, and was relieved by administration of some non-steroidal anti-inflammatory drugs and anti-osteoporosis drugs 6 months later. The X-ray films after operation and at last follow up showed good location of prosthesis and no bone resorption. Harris score at last follow-up was 91.31 +/- 0.77, and it was significantly higher than that before operation (50.88 +/- 0.90), (P < 0.05). The excellent and good rate was 93.5% (excellent in 11 hips, good in 18 hips, and fair in 2 hips).

CONCLUSION: Artificial THA with collum femoris preserving can retain more bone, be easier for revision, and has an excellent outcome.

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