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Hamstring muscle strain recurrence and strength performance disorders.

Jean-Louis Croisier1, Bénédicte Forthomme, Marie-Hélène Namurois

  • 1Department of Physical Medicine and Rehabilitation, University Hospital Center, Liège, Belgium.

The American Journal of Sports Medicine
|March 26, 2002
PubMed
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Recurrent hamstring injuries in athletes are often caused by underlying strength deficits. Targeted rehabilitation programs focusing on eccentric training can effectively correct these imbalances, reduce pain, and prevent re-injury, allowing athletes to return to competition.

Area of Science:

  • Sports Medicine
  • Biomechanics
  • Rehabilitation Science

Background:

  • Recurrent hamstring injuries are common in athletes, often linked to underlying muscle strength impairments.
  • Identifying and addressing these strength deficits is crucial for effective injury prevention and return to sport.

Purpose of the Study:

  • To determine the prevalence of strength disorders in athletes with a history of hamstring injuries.
  • To evaluate the effectiveness of a tailored rehabilitation program in correcting muscle performance deficits and preventing re-injury.

Main Methods:

  • Isokinetic assessment (concentric and eccentric) was used to evaluate strength deficits in 26 athletes.
  • Strength deficits were identified using peak torque, bilateral differences, and flexor/quadriceps ratios.

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  • Athletes with imbalances underwent individualized rehabilitation focusing on eccentric training.

    • Main Results:

    • 18 out of 26 athletes exhibited strength deficits, with eccentric assessments proving particularly discriminating.
    • Rehabilitation normalized isokinetic parameters in 17 of 18 subjects within 10-30 sessions.
    • Post-rehabilitation, athletes experienced reduced pain, no re-injuries over 12 months, and returned to their previous competition level.

    Conclusions:

    • Persistent muscle strength abnormalities are a significant risk factor for recurrent hamstring injuries.
    • Individualized rehabilitation programs, emphasizing eccentric training tailored to specific deficits, are effective in symptom reduction and re-injury prevention.
    • This approach facilitates a successful return to athletic activity.