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KMID : 0386719920040020093
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Journal of the Korean Hip Society
1992 Volume.4 No. 2 p.93 ~ p.99
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Chronologic Change of the Shape of the Proximal Femur
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구경회
조세현/이종서/송해룡/박형빈/정연천/황선철
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Abstract
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The shape of the proximal femoral endosteal canal is so different with age, sex and individual variation that any one contemporary stem cannot afford adequate fitting for all cases. Therefore the accurate knowledge of variability of
proximal femoral canal and its chronological change is essential for the selection of the most adequate stem design and prediction of the fate of stem after hip replacement arthroplasty. Total 300 radiographs of proximlal femur(50
cases
for each decade, from 3rd decade to 8th) were reviewed for the chornological anthropometric study of proximal femoral geometry and the below lesults were obtained.
1. The maximum cortical thickness at isthmic level was observed in the 5th decade(9.8±1.5mm), with gradual decreament, after then(8.9±1.9mm in the 8th decad).
2. The endosteal canal ratio at the isthmic level revealed continuous increament from the 3rd decade(0.38±0.08 in the 3rd decade, 0.44±0.08 in the 8th decade).
3. About the canal flare index and the stem space flare index, their maximum values were in the 4th decade(4.5±0.9 and 3.2±0.6)and decreased gradually(3.5±0.6 and 2.5±0.5 in the 8th decade.)
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