Synthesis - Association of Hip and Foot Factors Jumpers Knee

Research Report from JOSPT - Volume 48 - Number 9

Association of Hip and Foot Factors with Patellar Tendonopathy in Athletes

- Studied jumping athletes (think Bryce) both Female and Male in Volleyball and Basketball to determine the factors most prevalent to determine future patellar tendinopathy

- According to the article 40% of Volleyball + Basketball athletes have patellar tendinopathy

- Previous studies have studied sagittal plane movements during landing and altered hip and knee movement.

- Studied Brazilians, Preseason, At least 12 hours per week of practice

- Excluded those with history of Osgood-Schlatter disease, history of anterior knee pain not related to patellar tendon, previous history of surgery, and history of steroid injection

- Used Victorian Institute of Sport Assessment-patella questionnaire to exclude those between 80-94 (95+ Kept in study indicating low prevalence)

- Identified PROM Hip IR, SFA, Hip ER Torque, and Hip Abductor Torque as predictors for Tendinopathy

- Lower values of hip IR <40.76 deg, SFA <16.95 deg indicated lower prevalence of tendinopathy
- Subsequently, one may have higher degree of SFA but higher greater hip ER torque creating a protective effect
(The presence of adequate hip ER strength may help in controlling lower-limb IR, thereby mitigating the possible deleterious effects of the motion on the patellar tendon, moreover, the presence of adequate hip abductor strength could decrease patellar tendinopathy occurrence in athletes with high passive hip IR ROM)

- Tendinopathy was best predicted by passive hip IR between 40.76 - 44.46 deg or lower passive hip IR, greater SFA but lower hip ER torque