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Osteoarthritis of the Foot & Ankle

When the protective cartilage that lines your foot or ankle joints erodes, bones grind against one another, causing ache, stiffness, and swelling that can make every step a chore. This “wear-and-tear” degeneration is called osteoarthritis (OA). While it cannot be reversed, our board-certified podiatrists use imaging-guided diagnostics and a step-wise, evidence-based care ladder, ranging from activity-specific bracing to joint-preserving realignment or total-ankle replacement, to keep you active and comfortable.

Why Osteoarthritis Develops

Primary Triggers Contributing Factors High-Risk Joints
Previous trauma – ankle fracture, severe sprain, Lisfranc injury Abnormal alignment (flatfoot, cavus, hallux valgus) increases focal load Ankle (tibiotalar) • Mid-foot (TMT joints) • Big-toe MTP
Repetitive impact sports or heavy manual work Obesity • Occupational kneeling / squatting Subtalar & talonavicular (post-calcaneal fracture)
Age-related cartilage wear Genetics • Inflammatory flare “double hit”

Post-traumatic ankle OA accounts for up to 70 % of symptomatic cases, unlike hip-/knee OA, which is often primary/idiopathic.

Hallmark Signs & Symptoms

  • Deep, aching pain that worsens with prolonged standing or weather changes
  • Morning stiffness (≤ 30 min) that eases with gentle motion, then returns after inactivity
  • Swelling & warmth over the joint after activity
  • Audible/‐palpable creaking or grinding (crepitus) on movement
  • Progressive loss of motion, difficulty squatting, descending stairs, or wearing flat shoes
  • Bony spurs may cause shoe conflict (dorsal mid-foot bump, anterior ankle impingement)

Diagnostic Work-Up

  • Weight-bearing AP/lateral & oblique X-rays – joint-space narrowing, subchondral sclerosis, cysts, osteophytes.
  • Standing alignment views – hind-foot alignment, Meary’s angle; guides corrective osteotomy vs replacement.
  • CT or WB-CT – complex deformity, pre-arthrodesis planning, subtle subtalar OA.
  • MRI – useful when OA co-exists with osteochondral lesion or tendon pathology.

Evidence-Based Management

Conservative (all grades) Joint-Preserving Interventions Definitive Surgical Options
Custom rigid-rocker or carbon-fiber orthotics to unload joint Anterior ankle cheilectomy for impingement spurs Total Ankle Replacement (TAR) for isolated tibiotalar OA in patients ≥ 50 yrs with good bone stock
Ankle/foot braces (lace-up, carbon AFO) to limit painful motion Ankle distraction arthroplasty (external fixator) in young, focal OA Ankle Arthrodesis (fusion) – gold standard for severe deformity / high-load patients
Activity modification, weight management, low-impact cross-training Supramalleolar or calcaneal osteotomy to realign varus/valgus and off-load cartilage Mid-foot or triple arthrodesis for medial-column or subtalar OA
Oral NSAIDs / topical diclofenac; DMARDs if inflammatory overlay Viscosupplement (HA) or PRP injection – ankle & MTP joints First-MTP fusion or Cartiva® hemiarthroplasty for hallux rigidus Grade 3
Physical therapy – calf stretch, proprioception, joint mobilisation Arthroscopic debridement & micro-fracture for early, focal lesions —

Prospective registries show > 90 % pain relief and 85 % five-year implant survival with modern three-component total-ankle replacements.

Treatment Philosophy

  • Preserve motion when practical – realignment osteotomies or TAR chosen over fusion whenever biomechanics and patient profile allow.
  • Image-guided precision – injections delivered under ultrasound/fluoro to maximise relief and avoid soft-tissue atrophy.
  • Step-wise escalation – every patient gets an orthotic/brace + activity counsel before injections; surgery only after exhaustive conservative care or obvious high-grade degeneration.
  • Whole-chain outlook – correcting hind-foot or knee alignment prevents overload of a repaired ankle (and vice-versa).

Frequently Asked Questions

Low-impact running on forgiving surfaces may be possible early with brace + rocker shoe. Once joint-space is < 2 mm, we advise cycling, swimming, or elliptical to preserve cartilage.

TAR preserves up-down ankle motion, improving gait symmetry, but has implant lifespan considerations. Fusion eliminates pain reliably but shifts load to subtalar joints, which may arthrose over decades.

Current evidence shows biologics reduce pain and inflammation but do not re-create hyaline cartilage. They’re useful adjuncts, especially for delaying surgery, but not a cure.

Walk, Work & Play With Less Stiffness

Foot or ankle arthritis needn’t dictate your daily radius. Book an imaging-backed evaluation with North Texas Podiatry Associates and start a personalized plan, from rocker shoes to state-of-the-art ankle replacement, to keep you moving.

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