Knee hyperextension shows up when the knee joint bends backward beyond its normal range of motion.
It can also lead to pain and several other symptoms.
This medical problem most commonly occurs in athletes but can happen to anyone.
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Tackle football or soccer players are particularly susceptible.
Direct blows to the leg are not the only cause.
The most commonly affected areas include:
Themedial collateral ligament (MCL)andthe meniscusmay also be affected.
This is more likely if some degree of knee rotation or twisting occurs during the hyperextension injury.
Symptoms
Depending on the severity of your injury,several symptomsmay result from knee hyperextension.
Diagnosis
Treatment
Mild knee hyperextension can usually be treated conservatively.
Other possible treatment options include:
More significant hyperextension injuries may ultimately requiresurgical correction.
Prognosis
Individuals who sustain minor knee hyperextension injuries can usually recover following conservative treatment.
Most people undergoing an arthroscopic reconstruction after a hyperextension injury can also recover fully.
Several potential complications are worth noting, however.
Summary
Knee hyperextension injuries occur when the knee bends backward beyond its normal limits.
Depending on the severity, several different anatomical structures may be damaged, including the knees tendons or ligaments.
Mild hyperextension injuries are treated conservatively, while major ones may require arthroscopic surgery.
Penn Medicine.Posterior cruciate ligament injury (PCL).
Cawood C, Mashola K.Does the ankle affect knee hyperextension during gait in hemiparetic stroke?
A pilot study.S Afr J Physiother.
In:International Review of Research in Developmental Disabilities.
Elsevier; 2022:187-246. doi:10.1016/bs.irrdd.2022.09.004
Emory Healthcare.ACL injuries.
2016;4(2):97-103.
Hospital for Special Surgery.What does a pop in your knee mean?
American Academy of Orthopaedic Surgeons.ACL injury: does it require surgery?
American Academy of Orthopaedic Surgeons.Anterior cruciate ligament (acl) injuries.
2022;10(1):232596712110622. doi:10.1177/23259671211062238
