Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (39): 7295-7298.doi: 10.3969/j.issn.1673-8225.2010.39.018

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Application of trabecular metal AVN reconstruction rod for early osteonecrosis of the femoral head: Clinical observation of 45 hips in 2 years

Zhang Zhi-yu1, Cai Zheng-dong2, Wang Li-qiang3, Wu Jun4, Cui Yan1   

  1. 1 Department of Orthopedics, Fourth Hospital of China Medical University, Shenyang  110034, Liaoning Province, China; 2 Department of Orthopedics, Changhai Hospital of Second Military Medical University, Shanghai  200433, China; 3 Department of Orthopedics, China-Japan Friendship Hospital, the Ministry of Health, Beijing  10001, China; 4 Outpatient Clinic of Cadre Reset Institute, Shenyang Military Area Command of Chinese PLA, Shenyang  100032, Liaoning Province, China
  • Online:2010-09-24 Published:2010-09-24
  • About author:Zhang Zhi-yu☆, Doctor, Associate professor, Department of Orthopedics, Fourth Hospital of China Medical University, Shenyang 110034, Liaoning Province, China davidzhang77@sohu.com

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Abstract:

BACKGROUND: Core decompression and bone grafting have been used to treat osteonecrosis of the femoral head. However, core decompression alone has no adequate supports to bone plate beneath cartilage, and blood vessel pedicle fibular grafting induces damage in donor region, prolonged operation time, blood loss and complications during rehabilitation.
OBJECTIVE: To judge the survival rate of core decompression and tantalum rod to treat the osteonecrosis of the femoral head.
METHODS: A total of 40 patients (45 hips) with osteonecrosis of the femoral head at stage I and II before collapse, comprising 32 males and 8 females, aged 29.5 (20-40) years, were selected. The combination of core decompression and Tantalum rod method was used to treat the femoral head osteonecrosis. Harris scores were used to evaluate hip function and imaging was performed to evaluate complications. 
RESULTS AND CONCLUSION: All 40 patients completed the operation successfully, with no events. All patients were followed up, including 12 for 24 months, 18 for 12 months, and 10 for 6 months. The joint function of all patients was significantly improved following treatment. Imaging data showed that the tantalum rod was well placed in corresponding region, with no abnormal density, collapse, prosthesis loosening and radioactive lucency. Results show that core decompression and tantalum rod in the treatment of osteonecrosis of femoral head can delay or prevent continuous sinking of joint cartilage.

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