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Home/Patient Education/Fractures/Adult Fractures/Ankle Fracture With Syndesmotic Injury
Fracture Care · Adult · Leg and Ankle

Ankle Fracture With Syndesmotic Injury

The syndesmosis is the strong ligament complex holding the two lower leg bones together just above the ankle joint. An injury here typically requires a longer non-weight-bearing period than an ankle fracture without this involvement, to protect healing.

This page explains how a ankle fracture with syndesmotic injury is commonly managed, in plain language, based on Dr. Kee's typical approach to this injury.

Every fracture is different. Treatment varies based on the exact fracture pattern, displacement, age, whether surgery is needed, bone quality, other injuries, and how an individual heals. This page is general education, not your personal treatment plan — always follow the specific instructions given to you by Dr. Kee's office.

Table of Contents
What Is This Injury?
Short AnswerA quick explanation of what a ankle fracture (syndesmosis) is and why it's treated the way it is.

The syndesmosis is the strong ligament complex holding the two lower leg bones together just above the ankle joint. An injury here typically requires a longer non-weight-bearing period than an ankle fracture without this involvement, to protect healing.

How Is It Treated?
Short AnswerThis fracture may or may not require surgery, depending on its pattern.

This fracture may be treated with or without surgery, depending on the specific fracture pattern, how much the bone has shifted (displacement), and your individual situation. Your surgeon will determine the best approach for you.

Brace, Cast, Splint, or Sling
Short AnswerSee the type of immobilization typically used for this fracture, and about how long it's worn.

A short-leg splint (SLS) for about 2 weeks, then transition to a CAM boot (controlled ankle motion boot).

Walking or Using the Injured Limb
Short AnswerFind the general weight-bearing or limb-use status that typically applies to this fracture.

No weight bearing (NWB) for about 6 weeks. Patients with diabetes are generally kept non-weight-bearing longer — about 12 weeks — given the higher risk of bone-healing complications.

For a full explanation of what these weight-bearing terms mean, see our Weight-Bearing Guide.

When Does Motion Begin?
Short AnswerSee roughly when motion is typically introduced for this fracture.

No resistance or strengthening (NRM) for about 6 weeks (12 weeks for patients with diabetes). If treated with surgery, motion (ROM) may begin around 2 weeks once the skin has healed, as you transition to a CAM boot while weight-bearing restrictions continue.

Follow-Up and Imaging
Short AnswerWhat follow-up visits and imaging typically look like for this fracture.

A 6–8 week X-ray to confirm healing and clear the weight-bearing restriction. An optional 3–6 month X-ray may be used to monitor final healing.

Recovery Timeline
Short AnswerRecovery generally moves through protection, motion, weight-bearing, strengthening, and return to activity — at a pace your surgeon sets for your specific fracture.

Every fracture moves through the same general phases, though the exact timing is different for every patient:

1
Injury or Surgery
The fracture occurs, or is surgically stabilized if your surgeon recommends fixation.
2
Early Protection
A short-leg splint (SLS) for about 2 weeks, then transition to a CAM boot (controlled ankle motion boot).
3
Begin Motion
No resistance or strengthening (NRM) for about 6 weeks (12 weeks for patients with diabetes). If treated with surgery, motion (ROM) may begin around 2 weeks once the skin has healed, as you transition to a CAM boot while weight-bearing restrictions continue.
4
Progress Use / Weight Bearing
No weight bearing (NWB) for about 6 weeks. Patients with diabetes are generally kept non-weight-bearing longer — about 12 weeks — given the higher risk of bone-healing complications.
5
Strengthening
Physical therapy often helps rebuild strength once your surgeon confirms it's safe to begin.
6
Return to Activity
Return to work, school, driving, and sports is guided by your surgeon as healing progresses.
Return to Activity
Short AnswerGeneral guidance on when patients typically return to normal activities.

Your surgeon will guide when it's safe to return to work, school, driving, sports, or other activities based on your healing and this specific fracture. Follow the instructions given specifically to you.

Warning Signs — When to Call

  • Increasing pain that isn't controlled by your prescribed plan
  • New numbness or weakness
  • Fingers or toes that become pale, blue, cold, or very swollen
  • A cast or splint that becomes excessively tight, wet, damaged, or foul-smelling
  • New drainage, spreading redness, fever, or wound concerns

See our full When to Call page for the difference between routine office contact and emergency evaluation.

Chest pain, shortness of breath, or symptoms of a possible blood clot, or any life-threatening emergency — call 911 or go to the nearest emergency department.

Frequently Asked Questions

How long will I be in a cast, splint, or brace for a ankle fracture (syndesmosis)?
Short AnswerIt depends on the specific immobilization used for this fracture — see the typical duration below.

A short-leg splint (SLS) for about 2 weeks, then transition to a CAM boot (controlled ankle motion boot).

When can I return to work, school, driving, or sports after a ankle fracture (syndesmosis)?
Short AnswerThis is set individually based on your healing, not a fixed calendar date.

Your surgeon will guide when it's safe to return to these activities based on how your specific fracture is healing. Follow the instructions given specifically to you.

Still Have Questions?

Every fracture heals differently. If you have questions about your treatment plan, reach out to Dr. Kee's office.

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