First MTP Fusion (Arthrodesis) 2026 | Podiatrist

First metatarsophalangeal (MTP) joint fusion (arthrodesis) permanently joins the first metatarsal and proximal phalanx into a single bone, eliminating motion and pain at this joint. It is the gold standard surgical treatment for: Grade 3–4 hallux rigidus (severe big toe arthritis); hallux valgus (bunion) with significant arthritis; rheumatoid arthritis of the MTP joint; failed prior bunion surgery; and hallux valgus correction in high-demand patients where recurrence prevention is the priority. It produces reliable, durable pain relief with long-term outcomes superior to arthroplasty options.

Yes — the vast majority of patients walk normally after big toe fusion. The fusion position is set at approximately 15° of dorsiflexion and 15° of hallux valgus, which is optimal for normal gait mechanics. This allows push-off during walking and running without pain. Most patients are surprised by how normal their gait feels after recovery. High heels (greater than 1 inch) are not possible after fusion. Running is possible and many active patients return to recreational running, hiking, and sports — though elite sprinting and ballet are not compatible with a fused big toe.

Bone healing (fusion) typically occurs by 8–12 weeks, confirmed by X-ray showing trabecular bridging across the fusion site. Recovery protocol: 2 weeks non-weight bearing in a splint; 4–6 weeks in a surgical shoe with protected weight-bearing; gradual transition to regular shoes at 8–10 weeks after X-ray confirmation of fusion. Full activity is typically achieved at 3–4 months. CT scan at 3 months provides more sensitive assessment of fusion when X-ray findings are equivocal.

Modern fixation techniques use combinations of: crossed screws (two screws in opposite directions for multiplanar stability); a dorsal locking plate with supplemental screw; or a single compression screw through the phalanx into the metatarsal. Plate-and-screw constructs have higher fusion rates than screws alone in biomechanical studies. Hardware is not routinely removed unless symptomatic — fewer than 10% of patients require implant removal. Titanium hardware is MRI-compatible and produces minimal scatter artifact if future imaging is needed.