Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (48): 8937-8940.doi: 10.3969/j.issn.1673-8225.2010.48.003

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Biotype total hip arthroplasty for hip osteoarthritis: Medium-term efficacy evaluation

Chen Ming1, Guo Cheng-jun2, Huang He-sheng3, Shu Yong1, Han Zhi-min1   

  1. 1 Department of Orthopedics, First Hospital of Nanchang University, Nanchang  330006, Jiangxi Province, China; 2 Department of Orthopedics, Yichun Hospital of Traditional Chinese Medicine, Yichun  336000, Jiangxi Province, China; 3 Department of Orthopaedics and Traumatology, Hongdu Hospital of Traditional Chinese Medicine, Nanchang  330006, Jiangxi Province, China
  • Online:2010-11-26 Published:2010-11-26
  • About author:Chen Ming☆, Doctor, Department of Orthopedics, First Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China chair.man88@yahoo.com.cn Chen Ming and Guo Cheng-jun equally contributed to this paper.

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Abstract:

BACKGROUND: The clinical treatment effect of joint replacement has been improved. However, there are no follow up and evaluation standards of treatment effect.
OBJECTIVE: To assess the medium-term efficacy and impact factor of hip osteoarthritis cases following biotype artificial total hip arthroplasty.
METHODS: From July 2001 to March 2003, biological-based prosthetic treatment was used in 35 cases of hip osteoarthritis. All operation incisions were modified Gibson incision, cementless artificial total hip prosthesis was produced by Stryker U.S. companies. The cases were followed-up for 5.3-8 years. Harris score was used as the standard for clinical assessment, postoperative follow-up imaging was used as the standard assessment with anterior and posterior, lateral X-ray film of double hip joint to observe the acetabular cup, femoral prosthesis location and the surrounding bone change, the speed and trend of wear and tear of acetabular cup line. Prosthesis survival rate was analyzed using Kaplan-Meier analysis, acetabular cup and femoral aseptic loosening of prosthesis and renovation were detected respectively.
RESULTS AND CONCLUSION: Harris score was improved from average 41 points preoperatively to average 91.3 points at the recent follow-up. No case of aseptic loosening was diagnosed by imaging or required renovation, neither the limitations of pelvic osteolysis. The average linear polyethylene liner wear rate was (0.13 ± 0.06) mm per year. Kaplan-Meier survival analysis showed that the acetabular cup and femoral prosthesis survival rate was 100%. The medium-term follow-up (at least 5.3 years) showed that the biological-type prosthesis for hip osteoarthritis in patients with total hip replacement can provide an ideal fixed effects and satisfactory clinical efficacy. Aseptic loosening does not occur, and the incidence of osteolysis is low. However, the probability of occurrence of aseptic loosening increases with aging, and the long-term results require further follow-up.

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