Physical Activity for Strengthening Fracture Prone Regions of the Proximal Femur.

Curr Osteoporos Rep

Department of Physical Therapy and Center for Translational Musculoskeletal Research, School of Health and Rehabilitation Sciences, Indiana University, 1140 W. Michigan St, Indianapolis, IN, CF-120, USA.

Published: February 2017

AI Article Synopsis

  • Physical activity generally promotes bone health in the proximal femur, but it’s still unclear if it leads to a lower risk of fractures.
  • Falls from the side increase the chance of fractures in the femoral neck since this area is weaker, and most physical activity adaptations focus on the strongest parts of the bone.
  • There's a need for new physical activities specifically designed to strengthen the weaker superolateral region of the femoral neck, potentially using advanced models for guidance.

Article Abstract

Purpose Of Review: Physical activity improves proximal femoral bone health; however, it remains unclear whether changes translate into a reduction in fracture risk. To enhance any fracture-protective effects of physical activity, fracture prone regions within the proximal femur need to be targeted.

Recent Findings: The proximal femur is designed to withstand forces in the weight-bearing direction, but less so forces associated with falls in a sideways direction. Sideways falls heighten femoral neck fracture risk by loading the relatively weak superolateral region of femoral neck. Recent studies exploring regional adaptation of the femoral neck to physical activity have identified heterogeneous adaptation, with adaptation principally occurring within inferomedial weight-bearing regions and little to no adaptation occurring in the superolateral femoral neck. There is a need to develop novel physical activities that better target and strengthen the superolateral femoral neck within the proximal femur. Design of these activities may be guided by subject-specific musculoskeletal modeling and finite-element modeling approaches.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5317179PMC
http://dx.doi.org/10.1007/s11914-017-0343-6DOI Listing

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