Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (13): 2313-2319.doi: 10.3969/j.issn.2095-4344.2013.13.005

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Changes in anatomical parameters of the hip following femoral head necrosis and hip replacement: A 10-year follow-up survery

Song Ya-wei, Zhang Xi-yuan, Rong Ke   

  1. Nanjing Sport Institute, Nanjing 210014, Jiangsu Province, China
  • Received:2012-07-11 Revised:2013-01-19 Online:2013-03-26 Published:2013-03-26
  • Contact: Zhang Xi-yuan, Studying for master’s degree, Nanjing Sport Institute, Nanjing 210014, Jiangsu Province, China swlx2012@163.com
  • About author:Song Ya-wei☆, Doctor, Professor, Nanjing Sport Institute, Nanjing 210014, Jiangsu Province, China Syw0008@163.com

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Abstract:

BACKGROUND: At present, research on the anatomy parameters of the proximal femur is only confined to ordinary Chinese people, and the studies on some special groups are less.
OBJECTIVE: To perform a 10-year follow-up in one athlete treated with artificial hip replacement due to right femoral head necrosis, and to compare the hip parameters between healthy side and affected side and between healthy side and ordinary Chinese people.
METHODS: Pelvis X-ray plain films were taken from 2001 to 2011. The subject supine on photography table while shooting with double lower limbs in neutral position and closed to the X-ray films, the photographic distance was 100 cm, with the small rotor level as the center. Internal rotation of the femur was required to make the femoral neck in the coronal plane, then parallel to the longitudinal axis of the femoral neck for radiography. The various hip anatomy parameters were measured on the X-ray film, and then the data were imported into the SPSS 16.0 software for variance analysis, correlation analysis and principal component analysis of the contribution rate.
RESULTS AND CONCLUSION: Long-term training led to a serious increase in hip load, and the stress on femoral head was far beyond the ordinary people. The eccentricity on the healthy side was smaller which leading to the periarticular soft tissue contraction asthenia. Attention should be paid to maintaining and restoring the deformed parts. The traction after hip replacement recovered the center edge angle somewhat. As a result of long-term curtch walking, the compression on the healthy side was less than that of the ordinary people. A natural form of gravity-assisted traction was shown in the lower limbs. We should pay attention to the recovery of relative acetabular position on the healthy side. As a result of femoral head necrosis, femoral head collapse was observed in the overload area, joint cavity and pelvic height was decreased obviously. After operation, the femoral head and relative acetabular position on the healthy side were restored somewhat, but relative ipsilateral position difference was more obvious.

Key words: bone and joint implants, artificial prosthesis, femoral head necrosis, hip joint, X-ray, follow-up survey, anatomical parameters, neck shaft angle, center-edge angle, acetabular index, Natural Science Foundation of China

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