Knee Joint Dynamics Predict Patellar Tendinitis in Elite Volleyball Players

We quantified the lower extremity dynamics developed during the volleyball spike and block jumps to find out if predictive relations exist between jump dynamics and patellar tendinitis. Lower extremity movement biome chanics were analyzed for 10 members of the 1994 Canadian Men's National Volle...

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Bibliographic Details
Published in:The American journal of sports medicine 1996-09, Vol.24 (5), p.676-683
Main Authors: Richards, David P., Ajemian, Stanley V., Wiley, J. Preston, Zernicke, Ronald F.
Format: Article
Language:English
Subjects:
Adult
Athletic Injuries - etiology
Biological and medical sciences
Biomechanical Phenomena
Diagnosis
Diseases of the osteoarticular system
Forecasting
Humans
Injuries
Jumping
Juxtaarticular diseases. Extraarticular rhumatism
Knee
Knee Joint - physiopathology
Logistic Models
Male
Medical examination
Medical sciences
Movement
Multivariate Analysis
Pain - etiology
Patella
Physiological aspects
Range of Motion, Articular
Repetitive motion disorders
Rotation
Sports injuries
Sports medicine
Stress, Mechanical
Tendinitis
Tendinopathy - etiology
Tendons
Tibia - physiopathology
Volleyball
Weight-Bearing
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Summary:We quantified the lower extremity dynamics developed during the volleyball spike and block jumps to find out if predictive relations exist between jump dynamics and patellar tendinitis. Lower extremity movement biome chanics were analyzed for 10 members of the 1994 Canadian Men's National Volleyball Team (all right- handed hitters). Based on physical examination, 3 of the 10 players had patellar tendon pain associated with patellar tendinitis at the time of testing. In masked biomechanical and logistic regression analyses, we discovered that the vertical ground-reaction force dur ing the take-off phase of both spike and block jumps was a significant predictor of patellar tendinitis—cor rectly predicting the presence or absence of patellar tendinitis in 8 of 10 players. Deepest knee flexion angle (during landing from the spike jump) predicted 10 of 10 cases correctly for the left knee. The external tibial torsional moment (during the takeoff for the right knee with the spike jump and for the left knee with the block jump) was also a significant predictor of tendinitis. In these players, the likelihood of patellar tendon pain was significantly related to high forces and rates of loading in the knee extensor mechanism, combined with large external tibial torsional moments and deep knee flexion angles.
ISSN:0363-5465
1552-3365
DOI:10.1177/036354659602400520