Dr. Jiwu Chen

Sports Medicine Specialist

Patient education

Sports Medicine Q&A

Brief, easy-to-understand answers to common sports injury, treatment, and rehabilitation questions.

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Foot alignment

Do flat feet need corrective insoles?

Painless flat feet usually need no specific treatment. If sport repeatedly causes arch, ankle, knee, or lower-leg pain, orthoses, foot and ankle strengthening, calf flexibility, and running-load review may help. Rigid flatfoot or new one-sided collapse requires further assessment.

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Foot deformity

Can hallux valgus affect running or ball sports?

Yes. Hallux valgus can cause pain on the inner side of the big toe, shoe irritation, abnormal forefoot loading, and weak push-off. Early care includes footwear changes, spacers, intrinsic foot strengthening, and load adjustment. Persistent pain with marked deformity may warrant surgery assessment.

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Heel injury

Why can heel pain persist after a calcaneus fracture?

A calcaneus fracture can affect the subtalar joint, heel width, arch alignment, and surrounding soft tissues, leaving pain, stiffness, or shoe irritation after healing. Treatment may include rehabilitation, orthoses, anti-inflammatory pain control, injection, or fusion for severe post-traumatic arthritis.

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Ankle rehabilitation

When can sport resume after ankle ligament repair?

This depends on the repair technique, tissue quality, and rehabilitation progress. Weight bearing, motion, strength, and balance usually come first, then running, jumping, and cutting. Ball sports should wait for assessment of single-leg hop, agility, and instability symptoms.

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Sport after joint replacement

Can you exercise after total knee replacement?

Most patients can walk, cycle, swim, hike lightly, and perform low-impact strength training. High-impact jumping, intense contact, and frequent twisting may increase wear or loosening risk, so the exercise plan should reflect implant status and medical advice.

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Patellar tendon injury

How do patellar tendon rupture and patellar tendinitis differ?

Patellar tendinitis usually causes gradual pain below the kneecap that worsens with jumping and squatting. Patellar tendon rupture often occurs suddenly during takeoff or landing and may make active knee extension or straight-leg raising difficult. Suspected rupture needs prompt assessment.

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Knee injury

What symptoms can a loose body in the knee cause?

A loose body may cause catching, sudden pain, clicking, restricted motion, or recurrent effusion. When symptoms frequently affect walking or sport, imaging is usually needed. Some patients benefit from arthroscopic removal and treatment of the underlying cartilage or synovial problem.

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Meniscus injury

Does a discoid lateral meniscus need treatment?

An asymptomatic discoid meniscus is usually observed. If lateral knee pain, snapping, catching, recurrent swelling, or tearing develops, arthroscopic saucerisation, repair, or treatment of unstable tissue may be needed.

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Muscle injury care

Can a muscle contusion be massaged or heated?

Strong massage or prolonged heat is not advised in the acute phase because it may worsen bleeding and swelling. Initial care should use protection, compression, ice, and elevation. Marked pain, limited motion, or a firm lump warrants assessment for haematoma or myositis ossificans risk.

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Muscle injury rehabilitation

How should a quadriceps strain be rehabilitated?

Early care controls pain and swelling and avoids forceful stretching. Rehabilitation then restores knee motion, quadriceps isometric and resistance strength, and later running, acceleration, kicking, or jumping drills. Returning to sprinting too early increases recurrence risk.

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Hip disease

What exercise is suitable for femoral head osteonecrosis?

Running, jumping, heavy squats, and prolonged weight-bearing walking should generally be reduced, while low-impact exercise such as swimming and cycling is preferred. Exercise choice depends on lesion size, collapse, and pain level. Worsening hip pain or limping should prompt review.

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Hip dysplasia

Can someone with hip dysplasia still run?

This needs individual assessment. Mild, asymptomatic cases may continue controlled running with medical guidance and hip strengthening. Recurrent groin pain, limping, or imaging showing substantial undercoverage should lead to avoiding high-impact load and assessing joint-preserving options.

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Wrist nerve entrapment

Can carpal tunnel syndrome affect sport or strength training?

Yes. It can cause numbness of the thumb, index, and middle fingers, waking at night, and reduced grip strength, affecting racquet sports, cycling, and lifting. Treatment includes reducing provoking positions, splinting, nerve-gliding exercises, injection, or surgical release for severe nerve compression.

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Elbow rehabilitation

Can elbow stiffness improve with rehabilitation?

Most post-traumatic or postoperative elbow stiffness needs early, structured, gentle range-of-motion work. Heterotopic ossification, loose bodies, bony blocks, or long-standing severe stiffness may require imaging assessment and possible surgical release.

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Clavicle fracture

Can you keep playing sport after a clavicle fracture?

During the acute phase, loading the injured arm and contact sport should stop. Surgery depends on displacement, comminution, skin risk, neurovascular status, and sport demands. Return to sport requires fracture healing and recovery of shoulder motion and strength.

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Scapular function

Can abnormal scapular movement cause shoulder pain?

Yes. Poor scapular control can increase stress on the rotator cuff and subacromial structures, especially in overhead sports, swimming, badminton, and strength training. Treatment focuses on scapular stability, thoracic mobility, rotator cuff strength, and movement retraining.

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Postoperative rehabilitation

What warning signs after arthroscopy need prompt review or emergency care?

Fever, increasing wound redness or drainage, sudden marked pain, persistent calf swelling or pain, chest pain, shortness of breath, worsening joint stiffness, or a numb, cold limb should prompt urgent contact with the surgical team or emergency assessment for infection, clot, or nerve and blood-vessel complications.

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Return to running

How should running resume after a stress fracture heals?

Daily walking should be pain-free, local tenderness resolved, strength and mobility restored, and bone healing confirmed when appropriate. Return to running should begin with walk-run intervals and gradual weekly load increases. Recurrent pain means stepping back to an earlier stage.

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Running injury

How is medial tibial stress syndrome treated?

Treatment focuses on reducing running and jumping load, adjusting training volume, surfaces, and footwear, and improving calf strength, foot and ankle control, and hip-knee alignment. Focal pain, night pain, or pain with walking should prompt assessment for a stress fracture.

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Ankle treatment

Can arthroscopy treat pinching pain at the front of the ankle?

Anterior ankle impingement can follow repeated sprains, football, dance, or similar activity and causes pain at the front of the ankle during squatting, stairs, or dorsiflexion. If rehabilitation, activity modification, and medication provide limited relief and imaging shows bone spurs or soft-tissue impingement, arthroscopic debridement can be considered.

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Achilles rehabilitation

Is rehabilitation the same for midportion and insertional Achilles pain?

Not exactly. Midportion Achilles tendinopathy often responds to progressive heel raises and resistance training. Insertional Achilles tendinopathy is more sensitive to excessive dorsiflexion, so deep heel drops over a step are often avoided early, alongside heel lifts, load modification, and gradual strengthening.

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Tendinopathy treatment

Can shockwave therapy treat chronic tendinopathy?

Shockwave therapy may be used for selected chronic plantar fascia pain, calcific rotator cuff tendinitis, patellar tendinopathy, or Achilles tendinopathy. It is usually considered when symptoms persist and basic rehabilitation has provided limited benefit. Load management and strengthening are still required afterward.

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Cartilage repair

What are common surgical repair options for cartilage injury?

Options include microfracture, autologous osteochondral transfer, osteochondral allograft transplantation, cell-based cartilage repair, and scaffold-assisted techniques. Choice depends on defect size, location, bone condition, age, activity goals, and associated alignment or ligament problems.

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