Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (5): 815-820.doi: 10.3969/j.issn.2095-4344.2014.05.027

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Treatment of early avascular necrosis of femoral head: core decompression with tantalum rod implantation is better than core decompression with bone implantation

Li Yang1, 2, Feng Shi-qing1   

  1. 1Department of Orthopedics, General Hospital of Tianjin Medical University, Tianjin 300052, China; 2Department of Orthopedics, Affiliated Hospital of Chinese People’s Armed Police Forces, Tianjin 300052, China
  • Revised:2013-12-06 Online:2014-01-29 Published:2014-01-29
  • Contact: Feng Shi-qing, Professor, Doctoral supervisor, Department of Orthopedics, General Hospital of Tianjin Medical University, Tianjin 300052, China
  • About author:Li Yang, Studying for doctorate, Department of Orthopedics, General Hospital of Tianjin Medical University, Tianjin 300052, China; Department of Orthopedics, Affiliated Hospital of Chinese People’s Armed Police Forces, Tianjin 300052, China

Abstract:

BACKGROUND: Core decompression with bone implantation in treatment of early avascular necrosis of femoral head may provide insufficient support for subchondral bone and increase the risk of fracture and collapse. Tantalum rod implantation can not only provide good biological support, but also promote the revascularization at necrotic regions, thus repairing the necrosis of femoral head.

OBJECTIVE: To evaluate the efficacy of core decompression, core decompression with bone implantation and core decompression with tantalum rod implantation in treating early-stage avascular necrosis of femoral head.
METHODS: A total of 24 cases (28 hips) who suffered from ARCO I/II avascular necrosis of femoral head were treated with core decompression with bone implantation, and 25 cases (29 hips) who suffered from ARCO I/II avascular necrosis of femoral head were treated with core decompression with tantalum rod implantation. All the subjects were followed up for 24 months. The efficacy of two different surgical methods was evaluated before and after treatment by observing the changes in Harris scores.
RESULTS AND CONCLUSION: All involved patients were followed up. Harris score of core decompression with bone implantation group were increased 4.93 points at 6 months after surgery; Harris score of core decompression with tantalum rod implantation group were increased 6.89 points at 6 months after surgery. There

were significant differences between two groups before and after surgery (P < 0.05). After 12 months, Harris scores in the two groups were both significantly increased and the scores of core decompression with tantalum rod implantation group was higher than that of core decompression with bone implantation group (P < 0.05). The overall fine/excellent rate of core decompression with tantalum rod implantation group was 83%, which was better than core decompression with bone implantation group (75%). After 24 months, X-ray score of core decompression with tantalum rod implantation group was significantly higher than core decompression with bone implantation group (P < 0.05). Comparing with core decompression with bone implantation, core decompression with tantalum rod implantation can better prevent femoral head collapse, improve hip function and delay the process of osteonecrosis of the femoral head.



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


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Key words: femur head necrosis, bone transplantation, tantalum, X-rays, hip joint

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