Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (20): 3178-3183.doi: 10.3969/j.issn.2095-4344.2014.20.012

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Correlation of canal flare index of the proximal femur with bone mineral density of the femoral neck

Li Yi-zhong1, Zhuang Hua-feng1, Cai Si-qing2, Lin Jin-kuang1, Yao Xue-dong1, Pan Yuan-cheng1,
Yu Hai-ming1   

  1. 1Department of Orthopedics, Second Affiliated Hospital of Fujian Medical University, Quanzhou 362000, Fujian Province, China; 2Department of Radiology, Second Affiliated Hospital of Fujian Medical University, Quanzhou 362000, Fujian Province, China
  • Received:2014-03-05 Online:2014-05-14 Published:2014-05-14
  • About author:Li Yi-zhong, Master, Professor, Chief physician, Department of Orthopedics, Second Affiliated Hospital of Fujian Medical University, Quanzhou 362000, Fujian Province, China

Abstract:

BACKGROUND: The prevalence of osteoporosis is high in the patients undergoing total hip arthroplasty. Osteoporosis is associated with the survival of prostheses. Both canal flare index and bone mineral density are aged-related.
OBJECTIVE: To study the cxorrelation between canal flare index of the proximal femur and bone mineral density of femoral neck, and to pay more attention to osteoporosis.
METHODS: A retrospective study of the correlation between canal flare index of the proximal femur on pelvic radiograph and bone mineral density of femoral neck was made in 57 patients undergoing total hip arthroplasty.
RESULTS AND CONCLUSION: The canal flare index were ranged 1.8-4.8 (3.1±0.7) in 57 patients. There were 23 patients in canal flare index < 3 (chimney-type medullary cavity), 33 in canal flare index between 3 and 4.7 (normal-type medullary cavity), and one in canal flare index > 4.7 (funnel-type medullary cavity). The age had an impact on the type of medullary cavity. The prevalence of chimney-type medullary cavity were significantly higher in > 60 years old group than ≤ 60 years old group, and bone mineral density of femoral neck in the group of canal flare index ≥ 3 was significantly higher than the group of canal flare index < 3. The bone mineral density of femoral neck was gradually reduced with age, and were significantly higher in ≤ 60 years old group than in > 60 years old group [(0.751±0.235) g/cm2, (0.590±0.092) g/cm2, P=0.000]. As bone mineral density reduced, canal flare index was also decreased. Experimental findings indicate that, the bone mineral density of femoral neck is significantly correlated with canal flare index.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


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Key words: femur neck, bone mineral density, osteoporosis, arthroplasty, replacement, hip

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