Knee Ligament Injury Treatment Guidelines

Initial Assessment and Treatment

The American Academy of Orthopaedic Surgeons recommends surgical reconstruction for anterior cruciate ligament (ACL) tears to reduce the risk of future meniscus pathology, particularly in younger and more active patients 1
Acute knee ligament injuries should be evaluated for potential fractures using the Ottawa Ankle and Foot Rules to determine if radiography is needed 2
Painful, tense effusions after knee injury may be aspirated to provide symptomatic relief 3, 1
Initial management should include controlling pain and swelling using the PRICE protocol (Protection, Rest, Ice, Compression, and Elevation) 2
NSAIDs can be used to improve healing and speed recovery 2

Early surgical reconstruction is preferred for acute isolated ACL tears because the risk of additional cartilage and meniscal injury increases within 3 months 3
Both single-bundle and double-bundle techniques can be considered for ACL reconstruction as outcomes are similar 3
For skeletally mature patients, bone-patellar tendon-bone (BTB) autografts may reduce risk of graft failure or infection, while hamstring autografts may reduce anterior or kneeling pain 3
Anterior lateral ligament (ALL) reconstruction or lateral extra-articular tenodesis (LET) can be considered with hamstring autografts to reduce graft failure and improve short-term function 3
For combined ACL and MCL tears, non-surgical treatment of the MCL component typically results in good outcomes 1
Surgical treatment of the MCL may be considered in select cases 1

Functional rehabilitation (motion restoration and strengthening exercises) is preferred over immobilization 2
Manual joint mobilization combined with exercise therapy provides better outcomes than exercise therapy alone 4
Functional evaluation, such as hop tests, may be considered as one factor to determine return to sport after ACL reconstruction 1

Training programs designed to prevent injury can reduce the risk of primary ACL injuries in athletes participating in high-risk sports 3, 1
Prophylactic knee bracing is not a preferred option to prevent ACL injury 1
Functional knee braces are not recommended for routine use after isolated primary ACL reconstruction as they confer no clinical benefit 1

ACL reconstruction may improve long-term pain and function 1
Inadequate treatment of ligament injuries can lead to chronic problems such as decreased range of motion, pain, and joint instability 2

Delaying surgical treatment for ACL tears beyond 3 months increases risk of additional cartilage and meniscal injury 3
Relying solely on time from surgery/injury to determine return to sport rather than functional evaluation 3
Using ACL repair instead of reconstruction, as repair is associated with higher risk of revision surgery 1