What Fusion Does
A fusion permanently connects two arthritic bones into a single, painless unit. Eliminating motion at a damaged joint eliminates the pain that motion produced. Adjacent joints provide remaining motion.
Where It’s Used
- Ankle fusion - for end-stage ankle arthritis
- Subtalar fusion - for post-traumatic and inflammatory subtalar arthritis
- Triple arthrodesis - for complex hindfoot deformity
- Midfoot fusion - for symptomatic Lisfranc-region arthritis
- First MTP fusion - for severe hallux rigidus
Recovery
Fusion requires bone healing - generally 8–12 weeks of protected weight-bearing followed by progressive return to activity. Most patients return to walking, hiking, golf, and similar low- to moderate-impact activities; high-impact running is generally limited.
Why Fusion vs. Replacement
For some joints (like the ankle), total joint replacement is an option. Dr. O’Carroll discusses both fusion and replacement openly when appropriate, matching the procedure to your anatomy, age, activity level, and long-term goals.