Pain Management Guidelines Post-ACL Reconstruction
Introduction to Pain Management
- A multimodal analgesic approach combining regional anesthesia or local infiltration, NSAIDs, cryotherapy, and early mobilization provides optimal pain control while minimizing opioid consumption and facilitating early rehabilitation after ACL reconstruction 1, 2
Non-Pharmacologic Interventions
- Cryotherapy should be applied in the first postoperative week to reduce pain and swelling 1, 2
- Compressive cryotherapy is more effective than cryotherapy alone 1, 3
- Cryotherapy is inexpensive, has high patient satisfaction, and rarely causes adverse events 2
- Elevate the limb above heart level when resting to reduce swelling 3
Early Mobilization
- Start isometric quadriceps exercises in the first week only if they provoke no pain 1
Rehabilitation Phase
- Progress to concentric and eccentric exercises only when the knee does not react with effusion or increased pain 1, 3
- If effusion develops after exercise, immediately modify the program—this is the most critical error leading to prolonged symptoms 3
- Closed kinetic chain (CKC) exercises can be performed from week 2 postoperative 1
- Open kinetic chain (OKC) exercises can start from week 4 in restricted ROM of 90-45° 1
Critical Pitfalls to Avoid
- Never progress exercises if knee effusion develops—this indicates excessive loading 1, 3
- Avoid functional knee braces for routine use, as they confer no clinical benefit after isolated primary ACL reconstruction 4
- Avoid dense, long-duration nerve blocks in patients at risk for acute compartment syndrome 5
- Do not neglect quadriceps strengthening, as it is the primary determinant of long-term outcomes 3