Risk factors
By Mayo Clinic staffYour chance of injuring a hamstring depends partly on your activities and partly on your physical characteristics. Some possible risk factors include:
- Sports participation. Sports that require sprinting or running, or activities such as dancing that might require extreme stretching, make a hamstring injury more likely.
- Prior hamstring injury. After you've had one hamstring injury, you're more likely to have another one, especially if you try to resume all your activities at pre-injury levels before your muscles have time to heal and rebuild strength.
- Poor flexibility. If you have poor flexibility, your muscles may not be able to bear the full force of the action required during certain activities.
- Muscle imbalance. Although not all experts agree, some suggest that a muscle imbalance may lead to hamstring injury. When the muscles along the front of your thigh — the quadriceps — become stronger and more developed than your hamstring muscles, you have a muscle imbalance, which means you're more likely to injure your hamstring muscles.
References
- Hamstring muscle injuries. American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=a00408. Accessed May 18, 2010.
- Vetter CS, et al. Hamstring strain. In: Frontera WR, et al. Essentials of Physical Medicine and Rehabilitation. 2nd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/202267569-2/0/1678/62.html?tocnode=55148419&fromURL=62.html#4-u1.0-B978-1-4160-4007-1..50061-4_982. Accessed May 18, 2010.
- Shah A, et al. Hip, pelvis, and thigh. In: DeLee JC, et al. DeLee & Drez's Orthopaedic Sports Medicine Principles and Practice. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2009. http://www.mdconsult.com/book/player/linkTo?type=bookPage&isbn=978-1-4160-3143-7&eid=4-u1.0-B978-1-4160-3143-7..00021-X. Accessed May 18, 2010.
- Heiderscheit BC, et al. Hamstring strain injuries: Recommendations for diagnosis, rehabilitation and injury prevention. The Journal of Orthopaedic and Sports Physical Therapy. 2010;40:67.
- Sprains and strains. National Institute of Arthritis and Musculoskeletal and Skin Diseases. http://www.niams.nih.gov/Health_Info/Sprains_Strains/default.asp. Accessed May 19, 2010.
- Brooks GP, et al. Musculoskeletal injury in the young athlete: Overview of treatment principles for nonoperative injuries. http://www.uptodate.com/home/index.html. Accessed May 18, 2010.
- Brooks GP, et al. Musculoskeletal injury in the young athlete: Overview of rehabilitation for nonoperative injuries. http://www.uptodate.com/home/index.html. Accessed May 18, 2010.
- Hoskins W, et al. The management of hamstring injury - Part 1: Issues in diagnosis. Manual Therapy. 2005;10:96.
- Hoskins W, et al. Hamstring injury management - Part 2: Treatment. Manual Therapy. 2005;10:180.

Find Mayo Clinic on