What could cause intermittent severe bilateral ankle pain that feels like a dislocation, and how should it be evaluated and managed?

Intermittent Severe Bilateral Ankle Pain Evaluation and Management

Initial Assessment

This presentation is atypical for common ankle pathology and requires systematic evaluation to exclude serious underlying conditions, as true bilateral ankle dislocations are extraordinarily rare and intermittent "dislocation-like" pain suggests either recurrent instability, inflammatory arthropathy, or neuromuscular dysfunction rather than acute trauma. 1

Key Diagnostic Considerations

The bilateral nature and intermittent pattern distinguish this from typical lateral ankle sprains, which are usually unilateral and trauma-related 2. Several important differential diagnoses must be considered:

Inflammatory/Systemic Causes

• Sarcoidosis can present with bilateral ankle pain and arthralgia, particularly in the context of Löfgren's syndrome (bilateral hilar lymphadenopathy, uveitis, fever, and arthritis) 3
• Inflammatory arthropathies should be considered given the bilateral presentation
• Systemic conditions may manifest as bilateral ankle involvement

Chronic Ankle Instability (CAI)

• Up to 40% of patients develop CAI following ankle sprains, characterized by persistent pain, swelling, and recurrent instability 2
• Bilateral CAI is possible in patients with history of bilateral ankle injuries or predisposing factors
• Prognostic factors for CAI include inability to complete jumping/landing within 2 weeks, deficiencies in dynamic postural control, altered hip kinematics, and lack of mechanical stability 2

Other Structural Causes

• Syndesmosis injuries can cause persistent pain and instability 4
• Peroneal tendon pathology (subluxation, tears) may cause intermittent severe pain 5, 6
• Osteochondral lesions of the talus occur in 70% of ankle fractures and 50% of ankle sprains 2
• Sinus tarsi syndrome presents with lateral ankle pain 6
• Nerve entrapments can cause intermittent symptoms 6

Diagnostic Approach

Clinical Examination

• Delayed physical examination (4-5 days post-episode) is most reliable for assessing ligament damage severity 2
• Palpate specific anatomic structures: malleoli, talus, calcaneus, peroneal tendons, sinus tarsi, anterior ankle joint line 2
• Assess for mechanical instability and ligament laxity 2
• Evaluate dynamic postural control and proprioception 2
• Document workload, sports participation level, BMI, and body height as prognostic factors 2

Imaging Strategy

Initial imaging:

• Plain radiographs are appropriate if Ottawa Ankle Rules (OAR) are positive: inability to bear weight immediately after episodes, point tenderness over malleoli/talus/calcaneus, or inability to ambulate 4 steps 2
• Radiographs should be obtained bilaterally to compare and assess for fractures, alignment abnormalities, or chronic changes 2

Advanced imaging when radiographs are negative or symptoms persist:

• MRI without IV contrast is the study of choice for evaluating cartilage abnormalities, osteochondral lesions, bone contusions, ligamentous injuries, and tendon pathology in patients with persistent pain 2
• MRI is highly accurate for soft-tissue abnormalities including tendon entrapment/dislocation and ligamentous injuries 2
• CT is useful for syndesmotic injuries and alignment abnormalities, though MRI is superior for soft-tissue evaluation 2

Management Algorithm

Conservative Treatment (First-Line)

Functional support and supervised exercise therapy should be initiated immediately rather than immobilization or RICE protocol 2:

• Bracing is preferred over immobilization for functional support 2
• Supervised exercise-based programs are superior to passive modalities as they stimulate recovery of functional joint stability 2
• Exercise therapy should focus on proprioception, strength, coordination, and function 2
• NSAIDs may be used for pain and swelling reduction, but caution is warranted as they may suppress natural healing 2

Addressing Modifiable Risk Factors

• Identify and address modifiable risk factors including workload, sports participation level, and footwear 2
• High heels significantly increase LAS risk 2
• Sport-specific factors (soccer on natural grass, defensive positions, competitive level) increase risk 2

Refractory Cases

Surgery should be reserved for cases that do not respond to thorough and comprehensive exercise-based treatment 2:

• Consider surgical intervention for professional athletes requiring quick recovery 2
• Surgery may be indicated for persistent complaints after adequate conservative treatment 2
• Arthroscopy is excellent for intra-articular visualization to diagnose and treat unresolved lateral ankle pain 5

Critical Pitfalls

• Do not use RICE protocol as primary treatment—it is not advised for ankle sprains 2
• Avoid prolonged immobilization, which is contraindicated 2
• Do not dismiss bilateral presentation as simple sprains—consider systemic/inflammatory causes 3
• Recognize that 50% of ankle sprains result in cartilage injury requiring MRI evaluation if symptoms persist 2
• Address prognostic factors early (pain level, workload, sports participation) to prevent progression to CAI 2

Prevention of Recurrence

For prevention of recurrent ankle sprains, ankle braces should be considered as an efficacious option 2:

• Both tape and brace may be used, with choice based on patient preferences 2
• Exercise should be included in regular training activities 2
• Supervised exercises with focus on proprioception are advised for sport resumption 2