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The Relationship between lsokinetic Testing and Dynamic Patellofemoral Compression.

B Hoke, D Howell, M Stack

The Journal of Orthopaedic and Sports Physical Therapy

|January 1, 1983

Summary

Assessing knee extension torque regularity during dynamic patellofemoral compression tests can help identify patellofemoral joint disorders. Irregular torque patterns correlate with positive compression test findings, suggesting a valuable diagnostic adjunct.

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Area of Science:

Orthopedics
Biomechanics
Sports Medicine

Background:

Patellofemoral joint disorders are common and can cause significant pain and dysfunction.
Accurate diagnosis is crucial for effective treatment and rehabilitation.
Current diagnostic methods may not always capture the dynamic nature of patellofemoral issues.

Purpose of the Study:

To investigate the relationship between the regularity of isokinetic knee extension torque and findings from dynamic patellofemoral compression tests.
To determine if torque analysis can serve as an adjunct diagnostic tool for patellofemoral joint disorders.

Main Methods:

Forty-two subjects (symptomatic and asymptomatic) underwent dynamic patellofemoral compression tests.
Knee extension/flexion torque was measured using an isokinetic dynamometer.
Torque records were analyzed for regularity (normal or irregular deflections) via single-blind assessment.

Main Results:

A statistically significant correlation was found between irregular torque records and positive patellofemoral compression test findings.
Regular torque curves were significantly associated with negative patellofemoral compression test findings.

Conclusions:

The regularity of isokinetic knee extension torque appears to be a potentially valuable adjunct in evaluating individuals with patellofemoral joint disorders.
Further research is warranted to fully explore the diagnostic utility of this method.