Approach to Unilateral Ankle Pain and Swelling

Initial Assessment and Diagnosis

The American Academy of Family Physicians recommends determining the mechanism of injury to identify the type of sprain, with inversion injuries causing lateral ligament damage and dorsiflexion with external rotation or eversion with internal rotation suggesting high ankle sprain 3
The American Academy of Family Physicians suggests re-examining the patient at 3-5 days post-injury for optimal assessment of ligament damage, as initial swelling can obscure findings 3
Key physical findings for grade III sprains include swelling, hematoma, pain on palpation, and positive anterior drawer test, with 96% of patients having lateral ligament rupture 3
The American Academy of Family Physicians recommends using the crossed-leg test to detect high ankle sprains, where pressure on the medial knee produces syndesmotic pain 3

The British Journal of Sports Medicine recommends beginning functional treatment immediately with a semirigid or lace-up ankle brace combined with early weight-bearing as tolerated and supervised exercise therapy within 48-72 hours 1
The American Academy of Family Physicians suggests applying the Ottawa Ankle Rules to determine the need for radiography, which correctly rules out fracture in 299 of 300 patients (99.7% sensitivity) 5

The British Journal of Sports Medicine recommends using a semirigid or lace-up ankle brace for 4-6 weeks, which shows the greatest effects compared to other support types 1
The American Academy of Family Physicians suggests beginning supervised exercise therapy within 48-72 hours after injury, which has the strongest evidence for effectiveness 1
The British Journal of Sports Medicine recommends progressive strengthening exercises, proprioception training, and coordination and functional exercises as part of the exercise therapy protocol 1

The British Journal of Sports Medicine recommends using NSAIDs for short-term pain control (<14 days) and to accelerate return to activity, with ibuprofen, naproxen, diclofenac, or celecoxib as first-line options 1
The American Academy of Family Physicians suggests using acetaminophen as an alternative to NSAIDs if they are contraindicated, which is equally effective for pain, swelling, and range of motion 5

The American Academy of Family Physicians recommends using the same functional treatment approach with semirigid bracing for high ankle sprains, with expected delayed return to sports compared to lateral ankle sprains 4

The British Journal of Sports Medicine recommends avoiding immobilization beyond 3-5 days for initial pain control, as it shows no benefits compared to functional treatment and leads to decreased range of motion, chronic pain, and joint instability 1
The American Academy of Family Physicians suggests avoiding the application of heat to acute ankle injuries and not using the RICE protocol alone without exercise therapy 5

The American Academy of Family Physicians recommends continuing proprioception exercises incorporated into regular training activities and using ankle bracing during high-risk activities to prevent recurrent sprains 2