Patellofemoral Update

Patellofemoral Update

Disclosures: The authors report no relevant financial disclosures.
June 23, 2021
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Dynamic hamstring stretching is preferred for patients with patellofemoral pain

Disclosures: The authors report no relevant financial disclosures.
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Compared with static hamstring stretching, dynamic hamstring stretching with strengthening exercises improved muscle activation and outcomes in patients with inflexible hamstrings and patellofemoral pain, according to published results.

In a prospective, randomized controlled trial, Jin Hyuck Lee, PT, MSc, and colleagues from Korea University analyzed outcomes of 46 patients with patellofemoral pain syndrome (PFP). Researchers assigned 25 patients to a static stretching regimen and 21 patients to a dynamic stretching regimen.

Lee graphic
The dynamic stretching group also had improved VAS for pain and anterior knee pain scale (AKPS) compared with the static stretching group. Data were derived from Lee JH, et al. Sports Health. 2021;doi:10.1177/1941738120932911.

According to the study, primary outcome measures included hamstring flexibility, muscle strength and activation time, VAS for pain and the anterior knee pain scale (AKPS).

Lee and colleagues noted no significant differences in hamstring flexibility and knee muscle strength between the cohorts. However, researchers found the dynamic stretching cohort demonstrated “significantly improved” hamstring and quadriceps activation time, VAS and AKPS compared with the static stretching cohort.

“The most important result of the present study was that compared with the static stretching group, the dynamic stretching group had significantly improved muscle activation time and clinical outcomes but not significantly improved hamstring flexibility or knee muscle strength,” Lee and colleagues wrote in the study. “Clinicians and therapists could implement dynamic hamstring stretching to improve function and reduce pain in patients with PFP who have inflexible hamstrings,” they concluded.