Ankle Replacement Surgery in India and UAE | Complete Patient Guide

• ELIGIBLE CANDIDATES:

• End-stage tibiotalar arthritis (Kellgren-Lawrence Grade III–IV) confirmed on weight-bearing radiographs and CT scan

• Predominantly tibiotalar joint involvement (not primarily subtalar or midfoot)

• Adequate bone stock for cementless implant fixation (assessed by DEXA scan or CT Hounsfield unit analysis)

• Ankle deformity within correctable range: coronal malalignment ≤15–20° (varus/valgus), sagittal deformity amenable to balancing

• Failure of at least 6 months of conservative treatment: NSAIDs or COX-2 inhibitors (e.g., celecoxib), intra-articular corticosteroid or hyaluronic acid injections, custom orthoses, and formal physical therapy

• Age typically ≥55 years (lower activity demand favors implant longevity; younger active patients require individualized discussion)

• Adequate peripheral vascular status confirmed by ankle-brachial index (ABI ≥0.9) and, where indicated, Doppler ultrasound or CT angiography

• BMI ideally ≤35 kg/m² (obesity significantly increases complication and revision risk)

• REQUIRED PRE-OPERATIVE DIAGNOSTICS:

• Weight-bearing bilateral ankle radiographs (AP, lateral, mortise views) and full-limb standing alignment radiographs

• Weight-bearing CT (WBCT) with 3D reconstruction for bone stock assessment, deformity mapping, and virtual implant templating

• MRI ankle: assess residual cartilage, AVN of talus, soft-tissue integrity, and tendon status

• DEXA scan: bone mineral density to exclude severe osteoporosis (T-score <−2.5 is a relative contraindication)

• Complete metabolic panel, HbA1c (diabetes control; target <7.5%), CBC, coagulation profile (PT/INR, aPTT)

• Lower limb Doppler / ABI for vascular sufficiency

• Cardiopulmonary evaluation: ECG, echocardiogram (for ASA III+ patients), pulmonary function tests if relevant

• Infectious disease screening: CRP, ESR, HIV, HBsAg, HCV

• CONTRAINDICATIONS (ABSOLUTE):

• Active or recent local/systemic infection (osteomyelitis, septic arthritis, bacteremia)

• Avascular necrosis (AVN) of the talus involving >50% of talar body volume

• Severely compromised bone stock (critical osteoporosis, large cystic defects requiring structural graft)

• Peripheral vascular disease with ABI <0.5 or critical limb ischemia

• Neuropathic arthropathy (Charcot joint)

• Significant neuromuscular disorders with loss of motor control (drop foot, spastic equinus)

• Morbid obesity (BMI >40 kg/m²)

• RELATIVE CONTRAINDICATIONS:

• Coronal deformity >20° without concomitant corrective osteotomy capacity

• Poorly controlled diabetes mellitus (HbA1c >8%)

• Active inflammatory arthropathy on biologics (discuss with rheumatologist; perioperative biologic suspension required)

• History of prior ankle infection or multiple prior surgeries with compromised soft-tissue envelope

• Heavy manual labor or high-impact athletic demands (associated with accelerated polyethylene wear and early loosening)

IMPLANT SYSTEMS & DESIGN PHILOSOPHIES:

Third-generation total ankle implants used at GAF Healthcare partner hospitals fall into two principal design categories:

• Fixed-Bearing (Two-Component) Systems: The polyethylene insert is locked to the tibial tray. Examples include the INBONE II (Wright Medical) and Salto Talaris (Tornier/Integra). These systems offer greater constraint and are preferred in patients with moderate ligamentous laxity. The INBONE II uniquely features an intramedullary tibial stem allowing accurate alignment in post-traumatic cases with abnormal bone anatomy.

• Mobile-Bearing (Three-Component) Systems: A free-floating UHMWPE meniscal bearing sits between the tibial and talar metal components, allowing both rotational and translational freedom. This reduces peak stress at the bone-implant interface, theoretically improving longevity. Examples include the STAR (Scandinavian Total Ankle Replacement; Stryker), Hintegra (Newdeal/Integra), and SALTO (Tornier). The STAR is the only FDA-PMA-approved mobile-bearing TAA implant in the US, and it is widely used in India and the UAE.

• Infinity Total Ankle System (Wright Medical): A flat-cut tibial resection design that maximizes cortical bone support, reduces subsidence risk, and accommodates a wider range of tibial morphologies. Increasingly adopted at high-volume centers.

SURGICAL APPROACHES:

• Anterior Approach (Standard): The most common. Incision between tibialis anterior and extensor hallucis longus tendons. Allows direct visualization of the tibiotalar joint, excellent access for bone resection, and straightforward implant insertion. Risk of wound healing complications is managed by meticulous soft-tissue handling and layered closure.

• Lateral Transfibular Approach: A fibular osteotomy provides wider joint exposure, ideal for complex deformity correction, revision cases, or severely arthritic joints requiring larger bone resections. The fibula is reattached with a locking plate after implant insertion. Preferred by some surgeons for patients with >10° varus/valgus deformity.

CONCOMITANT PROCEDURES (Commonly Performed at the Same Setting):

• Supramalleolar osteotomy (SMO): Corrects tibial or fibular malalignment above the joint to optimize implant seating and longevity

• Calcaneal osteotomy: Corrects hindfoot varus or valgus that would otherwise load the prosthesis asymmetrically

• Subtalar joint fusion (selective): For concurrent subtalar arthritis, performed simultaneously to create a stable, pain-free platform

• Deltoid or lateral ligament reconstruction: Ligamentous balancing to correct valgus/varus instability and ensure symmetric polyethylene loading

• Peroneal or tibialis posterior tendon repair/transfer: Addresses muscular imbalance contributing to deformity

COMPUTER-ASSISTED SURGERY & NAVIGATION:

Leading GAF Healthcare partner centers employ intraoperative fluoroscopic navigation and, at the most advanced institutions, CT-based 3D surgical planning software (e.g., Materialise OrthoView, Stryker Planning) with patient-specific cutting jigs (PSI). These technologies reduce tibial and talar component malpositioning — the leading cause of early TAA failure — to <2° of error, compared with 5–8° in conventional jig-based techniques. Virtual templating pre-operatively determines exact component size, bone resection depth, and the need for augments, shortening intraoperative decision time and reducing blood loss.

ANESTHESIA PROTOCOL:

Total ankle arthroplasty is performed under spinal or combined spinal-epidural (CSE) anesthesia, supplemented by an ultrasound-guided popliteal sciatic nerve block and saphenous nerve block for multimodal, opioid-sparing analgesia. This approach reduces postoperative nausea, facilitates earlier mobilization, and shortens hospital stay compared with general anesthesia alone.

PRE-OPERATIVE PHASE (Weeks -4 to -1 Before Arrival):

• Step 1 — Remote Case Review (Week -4): Patient submits imaging (weight-bearing X-rays, CT/MRI), blood reports, and comorbidity history to GAF Healthcare. Our partner orthopedic surgeon conducts a virtual consultation to confirm candidacy, select the implant system, and identify any concomitant procedures required.

• Step 2 — Medical Optimization (Weeks -4 to -2): Diabetes optimization (HbA1c <7.5%), cessation of anticoagulants (warfarin stopped 5 days pre-op; DOACs stopped 2–3 days pre-op per surgeon protocol), suspension of biologics (TNF-alpha inhibitors stopped 2–4 weeks pre-op), smoking cessation (minimum 4 weeks), and pre-habilitation exercises for quadriceps and calf strength.

• Step 3 — Visa & Travel Arrangement (Week -2): GAF Healthcare coordinates e-Medical Visa application for India or UAE entry visa assistance. Pre-operative blood tests, ECG, and echocardiogram arranged at arrival destination.

• Step 4 — Arrival & Pre-Admission (Day -1): Airport pickup by GAF Healthcare team. Admission to hospital. Surgeon and anesthesiologist consultations. Repeat imaging if required. Informed consent. Patient fasted from midnight.

INTRAOPERATIVE PHASE (Day 0):

• Step 5 — Anesthesia Induction: Spinal anesthesia + ultrasound-guided popliteal sciatic and saphenous nerve blocks administered. Thigh pneumatic tourniquet inflated (typically 250–280 mmHg).

• Step 6 — Surgical Exposure: Anterior longitudinal incision (~12–15 cm) or lateral transfibular approach based on pre-operative plan. Careful full-thickness flap elevation, extensor retinaculum incised, joint capsule opened.

• Step 7 — Bone Resection: Tibial and talar resections performed with system-specific alignment jigs or patient-specific cutting guides under fluoroscopic confirmation. Resections are typically 7–10 mm from each articular surface. Fibula osteotomy performed if lateral approach used.

• Step 8 — Trial Reduction & Balancing: Trial components inserted. Fluoroscopic check for component position, limb alignment, and joint line restoration. Soft-tissue balancing (ligament release or reconstruction) performed as needed.

• Step 9 — Final Implant Insertion: Definitive cementless tibial tray and talar component press-fit into prepared bone. Polyethylene bearing inserted. Final fluoroscopic confirmation of alignment, stability, and range of motion.

• Step 10 — Closure & Dressing: Layered closure in multiple planes, drain insertion (removed Day 1–2), compressive dressing, and below-knee splint applied in neutral position. Average operative time: 90–150 minutes.

IMMediate POST-OPERATIVE PHASE (Days 1–5, In-Hospital):

• Day 1: Limb elevation, ice cryotherapy, VTE prophylaxis initiated (LMWH e.g., enoxaparin 40 mg SC daily or rivaroxaban 10 mg orally). Drain removed. Wound check. IV antibiotics (cefazolin 24 hours perioperatively). Physiotherapy begins with active toe and knee exercises.

• Day 2–3: Transition to oral analgesics (multimodal: celecoxib 200 mg BD, acetaminophen 1 g QDS, pregabalin 75 mg BD, tramadol PRN). Non-weight-bearing mobilization with crutches or walker initiated under physiotherapy supervision.

• Day 3–5: Wound inspection and dressing change. Edema management with compressive bandaging and limb elevation. Discharge with removable boot cast (non-weight-bearing), discharge medications, VTE prophylaxis prescription, and written instructions.

EARLY RECOVERY (Weeks 2–6, In-Country or Local Follow-Up):

• Weeks 2–3: First post-operative clinic review. Suture/staple removal at 2 weeks (critical: wound must be fully healed before flight). Wound photographs transmitted to surgeon if patient has returned home. Continued non-weight-bearing in boot.

• Week 4–6: Transition to protected weight-bearing (PWB) in CAM walker boot. Physiotherapy escalated: range-of-motion exercises, proprioception training, progressive resistance. X-rays confirm implant position and early osseointegration.

• FIT-TO-FLY MILESTONE: Patients are generally cleared for international long-haul flight at 6–8 weeks post-operatively, contingent on: (a) complete wound healing with no signs of infection, (b) DVT excluded clinically or by Doppler ultrasound, (c) adequate pain control not requiring strong opioids, and (d) surgeon written clearance. Compression stockings and in-flight ankle exercises are mandatory.

LATE RECOVERY (Months 2–12):

• Month 2–3: Full weight-bearing in supportive shoe. Advanced physiotherapy: gait retraining, balance board, progressive calf strengthening.

• Month 3–6: Return to low-impact activities (swimming, cycling). Stair climbing, uneven terrain walking normalized.

• Month 6–12: Maximum functional improvement achieved. AOFAS (American Orthopaedic Foot & Ankle Society) score and VAS pain score reassessed. CT scan at 6 months to assess bone ingrowth and implant stability.

• Year 1 and Annual: Routine follow-up radiographs to monitor for polyethylene wear, component migration, or periprosthetic lucency. GAF Healthcare coordinates remote radiology review with the operating surgeon.