Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (22): 4144-4151.doi: 10.3969/j.issn.2095-4344.2013.22.022

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Total hip arthroplasty for the treatment of acetabular protrusion secondary to rheumatoid arthritis

Tang Song-jun1, Liu Wei2, Li Xiao-hua3   

  1. 1 Department of Orthopedics, Shanghai Youdian Hospital, Shanghai  200040, China
    2 Department of Orthopedics, Huadong Hospital Affiliated to Fudan University, Shanghai  200040, China
    3 Department of Orthopedics, Changzheng Hospital, Shanghai  200003, China
  • Online:2013-05-28 Published:2013-05-28
  • Contact: Liu Wei, M.D., Attending physician, Department of Orthopedics, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China liuliumsn@hotmail.com
  • About author:Tang Song-jun, Attending physician, Department of Orthopedics, Shanghai Youdian Hospital, Shanghai 200040, China 346203236@qq.com

Abstract:

BACKGROUND: The rheumatoid arthritis can induce acetabular protrusion, and the reconstruction of the movement center and hip function are the two difficulties for total hip arthroplasty.    
OBJECTIVE: To discuss the clinical efficacy of total hip arthroplasty for the treatment of rheumatoid arthritis induced acetabular protrusion.
METHODS: Twenty-two hips in 16 patients with rheumatoid arthritis induced acetabular protrusion were involved, including five male patients with 8 hips and 11 female patients with 14 hips. They all received bone graft during total hip arthroplasty. All the patients were followed-up for 28-94 months, 50 months in average, and then imaging assessment was performed with hip X-ray films. The range of motion and the Harris score were used to evaluate the clinical efficacy.
RESULTS AND CONCLUSION: Up to the final follow-up, all patients got prosthesis stability and stable bone graft, and there was no obvious radiolucent line around the prosthesis. The Harris score was increased from (42.4±8.6) before replacement to (87.5±5.6) after replacement, and the inflection angle of range of motion was increased from (45.2±5.5)° to (95.6±5.8)°, the abduction angle increased from (15.2±8.5)° to (32.6±6.6)°. Total hip arthroplasty combined with autogenous bone graft for the treatment rheumatoid arthritis induced acetabular protrusion can effectively restore the hip center and reconstruct the hip function.

Key words:  bone and joint implants, clinical practice of bone and joint, rheumatoid arthritis, total hip arthroplasty, acetabular protrusion, autogenous bone graft, hip prosthesis, biological prosthesis, radiographic evaluations, range of motion, Harris score, biological fixation, stability, Sotello-Garza classification, Charnley classification

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