The foot and ankle are mechanical. Every step loads the joint, so the recovery curve is slower than knee or shoulder. The trade is durability: when therapy holds in this region, it tends to hold well. Ankle arthritis rarely sits alone: the tendons and ligaments that stabilize the joint are usually involved, and we treat those too, not just the joint surface.
If your foot and ankle surgeon has recommended fusion or replacement but your imaging still shows real joint space, an evaluation is a reasonable next step. We'll read your films and tell you plainly.