Lengths of the external hip rotators in mobilized cadavers indicate the quadriceps coxa as a primary abductor and extensor of the flexed hip.

@article{Vaarbakken2014LengthsOT,
  title={Lengths of the external hip rotators in mobilized cadavers indicate the quadriceps coxa as a primary abductor and extensor of the flexed hip.},
  author={Kjartan Vaarbakken and Harald Steen and Gunnar Samuelsen and Hans A. Dahl and Trygve B. Leergaard and Lars Nordsletten and Britt Stuge},
  journal={Clinical biomechanics},
  year={2014},
  volume={29 7},
  pages={
          794-802
        }
}
BACKGROUND The primary function of the external rotators of the hip is inadequately described. The descriptions for peak strength and stretch take no account of how these muscles change their length during normal movement. The latter relationship is known to greatly influence contraction forces and reflect moment arms. The aim of the present study was to indicate positions and directions for peak strength and stretch of piriformis and obturator internus (including the gemelli), collectively… Expand
Primary functions of the quadratus femoris and obturator externus muscles indicated from lengths and moment arms measured in mobilized cadavers.
TLDR
These findings indicate that maximal strength of the quadratus femoris muscle will be delivered in a flexed position towards extension, while maximalstrength of the obturator externus muscle will been delivered in an extended position towards flexion and adduction. Expand
LENGTH CHANGE OF THE SHORT EXTERNAL ROTATORS OF THE HIP IN COMMON STRETCH POSITIONS: A CADAVERIC STUDY.
TLDR
While all stretch positions caused a significant string displacement indicating length changes of the deep rotators of the hip, the three stretch positions that caused the greatest change were the obturator internus and inferior gemellus had the largest string displacement with 45 ° internal rotation from neutral flexion/extension. Expand
Description of a weight-bearing method to assess hip abductor and external rotator muscle performance.
TLDR
The proposed weight-bearing method of assessing hip abductor and external rotator muscle performance can be used as a simple, economic, and reliable method to assess hip muscle strength. Expand
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TLDR
PFM contraction combined with isometric hip abduction did not increase vaginal force in healthy and nulliparous women compared to PFM contractionCombining hip adduction or abduction in PFM training and treatments are not justified for improving PFM strength and endurance. Expand
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PURPOSE This study aimed to prospectively investigate the association between isolated and functional lower extremity muscle strength and the risk for noncontact anterior cruciate ligament (ACL)Expand
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TLDR
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TLDR
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