Management of Grade II‑III Lateral Ankle Sprains Involving the ATFL and CFL
Immediate (First 4‑5 Days) – PRICE & NSAIDs
- Apply the PRICE protocol (Protection, Rest, Ice, Compression, Elevation) and start NSAIDs to reduce swelling and pain in patients with Grade II‑III lateral ankle sprains. Level of evidence: not specified. 1
Immobilization Phase (Days 1‑14)
- Protection: Use a removable boot or a below‑knee cast for initial immobilization. Level of evidence: not specified. 1
- Weight‑bearing: Allow weight‑bearing as tolerated with assistive devices (e.g., crutches) during this period. Level of evidence: not specified. 2
- Patients with peripheral neuropathy: Provide more protective immobilization and limit to partial weight‑bearing. Level of evidence: not specified. 3
Transition to Functional Support (After Day 14)
- Switch to a lace‑up ankle support or functional brace; this reduces the risk of recurrent ankle injury. Level of evidence: not specified. 1
- Semirigid or lace‑up supports have Level B evidence for decreasing recurrent sprain risk, especially in individuals with prior sprains. 1
Structured Rehabilitation Program
Proprioceptive Training
- Incorporate ankle‑disk proprioceptive exercises; these lower the risk of future sprains. Level B evidence. 1
Strengthening & Return‑to‑Activity
- Perform progressive strengthening of ankle dorsiflexors and surrounding musculature. Level of evidence: not specified. 2
- Advance to activity only when the patient achieves pain‑free range of motion and adequate strength. Level of evidence: not specified. 2
Reassessment Points
Early Re‑examination (3‑5 Days)
- Re‑evaluate to differentiate partial ligament tears from complete ruptures, recognizing that swelling may obscure the exam. Level of evidence: not specified. 1
Mid‑term Re‑assessment (2‑3 Weeks)
- If symptoms persist or worsen, reassess clinically. Level of evidence: not specified. 2
Imaging Recommendations
| Modality | Accuracy for ATFL Tears | Accuracy for CFL Tears | Additional Benefits |
|---|---|---|---|
| MRI (without contrast) | 77 %–92 % | 88 %–92 % | Detects associated tenosynovitis, tendon injury, and osteochondral lesions |
- MRI is advised when symptoms do not improve, offering high diagnostic accuracy. Guideline source: American College of Radiology. [4][5]