This systematic review and meta-analysis (66 studies, 873,785 participants) for the OPTIKNEE Consensus identifies and quantifies risk factors for knee OA after traumatic knee injury. The target population was injured at mean age ≤30 years, with minimum 2-year follow-up. The central question: which injury characteristics and treatment decisions predict who develops symptomatic or structural OA?
The meniscus is the most actionable OA risk modifier at ACLR. When you perform meniscectomy alongside ACL reconstruction, you are meaningfully increasing your patient's structural OA risk — and total medial meniscectomy triples it. Every effort to preserve meniscal tissue is not just about function; it is about long-term joint health.
This paper also reframes who deserves a post-traumatic OA conversation. Collateral ligament injuries, fractures, patellar dislocations, and chondral injuries all carry moderate-certainty evidence for elevated symptomatic OA risk. The 19-year-old who dislocated her patella with a chondral defect faces an OA risk more than 11 times higher than an uninjured knee.
There is currently no evidence-based surgical or rehabilitation maneuver proven to reduce post-traumatic OA risk once the injury has occurred. Manage patient expectations accordingly: early ACLR, specific graft choice, and timing of surgery do not appear to change OA trajectory.
In the absence of proven treatment targets, focus post-injury care on evidence-based injury prevention programs and addressing modifiable OA risk factors (adiposity, quadriceps weakness) across all knee injury types, not just ACL tears.
This systematic review and meta-analysis (66 studies, 873,785 participants) for the OPTIKNEE Consensus identifies and quantifies risk factors for knee OA after traumatic knee injury. The target population was injured at mean age ≤30 years, with minimum 2-year follow-up. The central question: which injury characteristics and treatment decisions predict who develops symptomatic or structural OA?
The meniscus is the most actionable OA risk modifier at ACLR. When you perform meniscectomy alongside ACL reconstruction, you are meaningfully increasing your patient's structural OA risk — and total medial meniscectomy triples it. Every effort to preserve meniscal tissue is not just about function; it is about long-term joint health.
This paper also reframes who deserves a post-traumatic OA conversation. Collateral ligament injuries, fractures, patellar dislocations, and chondral injuries all carry moderate-certainty evidence for elevated symptomatic OA risk. The 19-year-old who dislocated her patella with a chondral defect faces an OA risk more than 11 times higher than an uninjured knee.
There is currently no evidence-based surgical or rehabilitation maneuver proven to reduce post-traumatic OA risk once the injury has occurred. Manage patient expectations accordingly: early ACLR, specific graft choice, and timing of surgery do not appear to change OA trajectory.
In the absence of proven treatment targets, focus post-injury care on evidence-based injury prevention programs and addressing modifiable OA risk factors (adiposity, quadriceps weakness) across all knee injury types, not just ACL tears.