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Concussions are associated with an elevated risk of musculoskeletal injury
Significant associations were found between concussion and
Lateral ankle sprain (P = 0.012)
Knee injury (P = 0.002)
Lower extremity muscle injury (P = 0.031)
Keep in mind that 50 – 80% of concussions may go undiagnosed or unreported.
A discussion about risks of early return after concussion should include mention of risks beyond repeat head injury/2nd impact syndrome
Study limits: Retrospective design limits ability to establish causation/reporting bias
References
Gilbert, Burdette, et al., 2016 Association between concussion and lower extremity injuries in collegiate athletes. Sports Health 8 (6), 561-567.