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Hayes WC, Myers ER, Morris JN, Gerhart TN, Yett HS, Lipsitz LA. Calcif. Tissue Int. 1993; 52(3): 192-198.


Orthopaedic Biomechanics Laboratory, Charles A. Dana Research Institute, Beth Israel Hospital, Boston, Massachusetts 02215.

Comment In:

Calcif Tissue Int 1994;54(2):175-7


(Copyright © 1993, Holtzbrinck Springer Nature Publishing Group)






Hip fractures among the elderly are a significant and rapidly growing public health problem. The prevailing view is that most hip fractures are the consequence of age-related bone loss or osteoporosis. However, because over 90% of hip fractures are the result of falls, we have undertaken a falls surveillance study to determine if factors related to the mechanics of falling are associated with increased risk of hip fracture. Case subjects with hip fracture and control subjects without hip fracture were sampled from falls recorded at the Hebrew Rehabilitation Center for Aged, a chronic care facility. Fall information was obtained by interview of the subject and witnesses if the fall was witnessed. Data were analyzed by multiple logistic regression. Increased risk of hip fracture from a fall was associated with impacting on the hip or side of the leg and potential energy associated with the fall. Quetelet, or body mass index, was inversely related to fracture risk. The adjusted odds ratio of hip fracture for a fall involving impact on the hip region was 21.7 (95% confidence interval, 8.2-58). The potential energy associated with these falls was an order of magnitude greater than the average energy required to fracture elderly, cadaveric, proximal femurs in earlier in vitro experiments. We conclude, therefore, that a fall from standing height should no longer be considered minimal trauma but rather trauma of sufficient magnitude to pose a high risk of hip fracture if impact occurs on the hip and if energy-absorbing processes are inadequate.(ABSTRACT TRUNCATED AT 250 WORDS)

Language: en


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