1.Isokinetic dynamometry in anterior cruciate ligament injury and reconstruction.
Yong Hao PUA ; Adam L BRYANT ; Julie R STEELE ; Robert U NEWTON ; Tim V WRIGLEY
Annals of the Academy of Medicine, Singapore 2008;37(4):330-340
The use of isokinetic dynamometry has often been criticised based on the face-validity argument that isokinetic movements poorly resemble the everyday multi-segmented, dynamic activities of human movements. In the anterior cruciate ligament (ACL) reconstruction or deficiency population where muscle deficits are ubiquitous, this review paper has made a case for using isokinetic dynamometry to isolate and quantify these deficits in a safe and controlled manner. More importantly, the usefulness of isokinetic dynamometry, as applied in individuals with ACL reconstruction or deficiency, is attested by its established known-group and convergent validity. Known-group validity is demonstrated by the extent to which a given isokinetic measure is able to identify individuals who could and could not resume pre-morbid athletic or strenuous activities with minimal functional limitations following an ACL injury. Convergent validity is demonstrated by the extent to which a given isokinetic measure closely associates with self-report measures of knee function in individuals with ACL reconstruction. A basic understanding of the measurement properties of isokinetic dynamometry will guide the clinicians in providing reasoned interventions and advancing the clinical care of their clients.
Adolescent
;
Adult
;
Anterior Cruciate Ligament
;
physiopathology
;
surgery
;
Anterior Cruciate Ligament Injuries
;
Biomechanical Phenomena
;
Female
;
Humans
;
Knee Injuries
;
physiopathology
;
surgery
;
Male
;
Middle Aged
;
Muscle Contraction
;
physiology
;
Orthopedic Procedures
;
Range of Motion, Articular
;
physiology
;
Torque