If your ankle keeps rolling — on trail runs in the foothills, on uneven sidewalks, or even walking across the living room — the problem may no longer be a fresh sprain. It may be chronic lateral ankle instability, a condition where the ligaments on the outside of the ankle have stretched or torn to the point that they no longer hold the joint securely. When bracing, physical therapy, and activity modification fall short, lateral ankle ligament reconstruction is often the next step.

Why Ligaments Fail to Heal on Their Own

The most commonly injured ligaments on the outside of the ankle are the anterior talofibular ligament (ATFL) and the calcaneofibular ligament (CFL). A single bad sprain can stretch these tissues, and repeated sprains can leave them permanently elongated or scarred in a lax position. Once that happens, the ankle sits in a slightly looser alignment, which makes future sprains more likely and can accelerate cartilage wear inside the joint.

Many patients we see in Boise have already tried months — sometimes years — of conservative care. They wear a brace for hikes, tape before basketball, and still feel the ankle give way. That pattern is worth taking seriously, because ongoing instability can lead to osteochondral lesions and early ankle arthritis.

Signs You May Be a Candidate for Reconstruction

Every ankle is different, but there are patterns that suggest surgical evaluation is reasonable. Consider a specialist consultation if you experience any of the following:

• Repeated ankle sprains, even from low-impact activities
• A persistent feeling that the ankle is going to “give out”
• Swelling or aching that returns after every active day
• Failed course of formal physical therapy and bracing
• Pain deep in the joint, not just along the ligaments
• A prior ankle surgery that didn’t resolve the instability

How the Procedure Works

The most established approach is a modified Broström procedure, which tightens and repairs the patient’s own ATFL and CFL, often reinforced with nearby tissue such as the extensor retinaculum. In cases where the native ligaments are too poor in quality — common after multiple sprains or a previous failed repair — augmentation with suture tape or a tendon graft may be recommended. When there is a coexisting cartilage injury inside the joint, ankle arthroscopy is typically performed at the same time to address it.

Surgery is generally outpatient. Patients spend a period non-weight-bearing in a splint, transition into a boot, and then begin a structured rehabilitation program focused on range of motion, strength, and proprioception. Return to full activity varies by patient and by what other work was done inside the joint, so recovery timelines are individualized rather than one-size-fits-all.

Second Opinions After a Prior Repair

Not every ankle reconstruction succeeds the first time. Underlying issues — such as a high-arched (cavovarus) foot shape, an untreated cartilage lesion, or insufficient ligament tissue — can undermine an otherwise well-performed surgery. If you’ve had a lateral ligament repair and still feel unstable, a fresh evaluation that includes weight-bearing imaging and a careful look at foot alignment is worthwhile. Sometimes the fix involves a stronger reconstruction; sometimes it involves correcting the foot shape driving the instability.

When to Seek an Evaluation

Chronic ankle instability is not something you have to live with, and it doesn’t get better by avoiding activity. If your ankle has been unreliable for more than a few months despite good conservative care, an orthopedic foot and ankle evaluation can clarify what’s actually happening inside the joint and what your realistic options are.