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Assessment of Hip and Knee Muscle Function in Orthopaedic Practice and Research
Nicola A. Maffiuletti, PhD1
1 Neuromuscular Research Laboratory, Schulthess Clinic, Lengghalde 2, 8008 Zürich, Switzerland. E-mail address: nicola.maffiuletti@kws.ch
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Disclosure: The author did not receive any outside funding or grants in support of his research for or preparation of this work. Neither he nor a member of his immediate family received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity.

Investigation performed at the Neuromuscular Research Laboratory, Schulthess Clinic, Zürich, Switzerland

Copyright ©2010 American Society for Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2010 Jan 01;92(1):220-229. doi: 10.2106/JBJS.I.00305
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Abstract

Isometric evaluation of hip and knee muscle strength can be a useful objective assessment tool in the clinic and may be preferred over other forms of dynamic muscle testing, such as isokinetic assessment or variable-resistance weight-lifting.

Assessment of isometric strength with use of a handheld dynamometer requires little skill and is easily administered, relatively inexpensive, valid, reliable, and functional; thus, it could be easily integrated into routine clinical examinations.

Surface electrical stimulation, electromyography, and ultrasonography can be used in conjunction with isometric muscle testing for the identification of neuromuscular factors influencing muscle force generation.

Further research is warranted to investigate the neural and/or muscular impairments associated with hip and knee muscle weakness in orthopaedic populations, with the ultimate goal of improving rehabilitation strategies.

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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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