Procedure
Triple Arthrodesis
For Progressive Collapsing Foot Deformity
What It Involves
A triple arthrodesis permanently fuses the three main joints of the hindfoot — the subtalar, talonavicular, and calcaneocuboid joints. This is generally reserved for rigid, fixed deformity with secondary arthritis, most commonly seen in late-stage adult acquired flatfoot, but also used for post-traumatic arthritis, inflammatory arthritis, or severe tarsal coalition affecting these joints.
By eliminating movement at all three arthritic joint surfaces, the source of pain is removed and the hindfoot is realigned into a corrected, stable position. Because these joints normally contribute relatively little to overall foot and ankle motion, most patients walk naturally once healed, though some stiffness on uneven ground is expected long-term.
Recovery Timeline
Everyone heals at a different rate — this timeline is a guide.
Weeks 1–6
Non-weight-bearing in a cast, with strict foot elevation. The wound is checked and sutures removed at 2 weeks. Sedentary work is possible from around 4–6 weeks if the foot can be elevated.
Weeks 6–12
Transition from the cast into a boot at 6 weeks, remaining non-weight-bearing for a further 6 weeks while the fusion sites consolidate, ahead of the next X-ray around 12 weeks.
Weeks 12 onwards
If the X-ray is satisfactory, graduated weight-bearing in the boot commences, with physiotherapy for gait rehabilitation and strengthening, transitioning into supportive, rocker-bottom footwear recommended indefinitely afterwards. Roles requiring prolonged standing or walking typically need around 4 months off.
3 months
Most daily activities have resumed.
6–12 months
As this is a major hindfoot fusion, full recovery — including return to higher-demand activity — is expected to take 6–12 months, with a final review and discharge once fusion is confirmed.