What is the likely cause and recommended evaluation for persistent elbow pain with soft‑tissue discomfort and lateral dorsal foot pain in a patient who has right‑sided drop foot due to a peripheral (peroneal) nerve injury?

Chronic Elbow and Foot Pain with Known Peroneal Nerve Injury

Your persistent bilateral elbow pain with soft tissue involvement most likely represents lateral epicondylalgia (tennis elbow) or medial epicondylalgia (golfer's elbow), and you should start with plain radiographs of both elbows followed by conservative treatment including rest, activity modification, and eccentric strengthening exercises. 1 Your foot pain on the lateral dorsum may be related to your existing peroneal nerve injury causing altered gait mechanics and secondary soft tissue strain.

Elbow Pain Evaluation

Initial Diagnostic Approach

Start with bilateral elbow radiographs as the first imaging study. 1 This is the standard initial evaluation for chronic elbow pain and can identify:

• Intra-articular loose bodies
• Heterotopic ossification
• Osteochondral lesions
• Soft tissue calcifications
• Occult fractures
• Osteoarthritis

The 2022 ACR Appropriateness Criteria clearly designate radiography as the beneficial initial imaging for chronic elbow pain. 1

Differential Diagnosis for Your Elbow Pain

The most common cause of chronic elbow pain is epicondylalgia, occurring in 1-3% of the population. 1 Given your description of "soft tissue pain," this is the leading diagnosis. Other possibilities include:

• Cubital tunnel syndrome (ulnar nerve compression)
• Radial tunnel syndrome (deep radial nerve entrapment)
• Biceps tendinopathy
• Collateral ligament tears

Important caveat: If your elbow pain includes numbness or tingling, electromyography should be performed to evaluate for nerve involvement. 1 This is particularly relevant given your existing peripheral nerve injury on the right foot.

Treatment for Elbow Pain

Begin conservative management immediately (80% of patients recover within 3-6 months): 2

• Relative rest of the affected area (not complete immobilization)
• Ice application for acute symptom relief
• Eccentric strengthening exercises (this is the cornerstone of treatment)
• Physical therapy focusing on tendon loading exercises

NSAIDs can be used for acute pain relief but cannot be recommended over other analgesics for long-term management. 2 Corticosteroid injections may relieve pain but should be used cautiously.

Surgery is reserved only for patients who fail 3-6 months of conservative therapy or have specific structural injuries (ligament tears, biceps injury, cubital tunnel syndrome). 1

Foot Pain Evaluation

Understanding Your Foot Pain in Context

Your lateral dorsal foot pain (top outside of both feet) is not typical of the peroneal nerve injury itself, which causes drop foot through motor weakness. This pain pattern suggests:

1. Compensatory gait abnormalities from your right-sided drop foot causing altered biomechanics and secondary soft tissue strain
2. Possible nerve irritation at the ankle level (superficial peroneal nerve branches)
3. Overuse of lateral foot structures due to abnormal weight distribution

Recommended Evaluation

If you haven't had recent imaging of your right peroneal nerve, consider MRI of the right knee/fibular head region to assess for:

• Nerve compression at the fibular head (most common site)
• Intraneural ganglion cysts 3
• Chronic nerve scarring

For the bilateral foot pain specifically, plain radiographs of both feet should be obtained first to rule out:

• Stress fractures
• Bone abnormalities
• Soft tissue calcifications

Treatment Considerations for Drop Foot

Surgical decompression of the peroneal nerve should be considered if you have:

• Clinically suspected compressive neuropathy at the fibular head
• Subjectively disturbing drop foot
• Failed conservative management

Recent evidence shows that even chronic cases (up to 6 years) can benefit from surgical neurolysis, particularly when associated with neuropathic pain. 4 The key is identifying whether there is ongoing nerve compression that is surgically correctable.

If your drop foot is permanent and non-recoverable, options include:

• Muscle-transfer surgery for functional improvement
• Ankle-foot orthosis (AFO) for gait support
• Physical therapy focusing on compensatory strategies

Critical Connection Between Your Symptoms

Your bilateral foot pain may be directly related to your right drop foot. The altered gait pattern from drop foot causes:

• Increased stress on the lateral foot structures bilaterally
• Abnormal weight distribution during walking
• Compensatory muscle overuse

Address the drop foot first through proper evaluation and treatment, as this may significantly improve or resolve your bilateral foot pain.

Immediate Action Plan

1. Schedule bilateral elbow radiographs this week
2. Begin conservative elbow treatment (rest, ice, eccentric exercises) while awaiting imaging results
3. Obtain MRI of right knee/fibular head if not done recently to assess peroneal nerve
4. Get bilateral foot radiographs to rule out structural abnormalities
5. Consider referral to a peripheral nerve specialist if you have neuropathic pain in your foot or if conservative drop foot management has failed

Common pitfall to avoid: Don't assume all your symptoms are related to your known peroneal nerve injury. Your elbow pain is likely a separate overuse tendinopathy requiring its own specific treatment approach. 5