Type of Procedure: Outpatient
Length of Procedure: 1 hr
Anesthesia: Regional nerve block with general anesthesia or sedation
Medications: Oxycodone or Norco for pain, aspirin 81 mg twice daily for 3 weeks to lower risk of blood clots, ondansetron for nausea
Follow-up appointments: 2 weeks, 6 weeks, 12 weeks
Time Non Weight Bearing: 2 weeks no weight, advance weight bearing in boot from weeks 2-6, transition to shoes 6-8 weeks from, surgery
Time to Driving: When off narcotics for left foot unless you have a clutch, 8-10 weeks for right foot
Ankle Instability: General facts
- Ankle sprains are the most common injury to the ankle
- ~25% of ankle sprains turn into chronic ankle instability
- Patients with chronic ankle instability report ankle giving out with everyday activities, pain on the outside of the ankle, and avoidance of doing some activities due to feelings of instability
- If left untreated, ankle instability can lead to ankle arthritis
- Diagnosis is made based on clinical examination and history; MRI is often obtained to evaluate for associated injuries
Lateral Ankle Ligament Anatomy
- Three ligaments make up the lateral ankle ligament complex (ATFL, CFL, and PTFL)
- ATFL is most commonly injured, followed by the CFL
- The ligaments prevent the ankle from turning inwards
- When injured, they generally heal but if not rehabbed appropriately, can heal in a stretched out position
Treatment Ankle Instability
- Nonoperative treatment includes 6-12 weeks of PT, activity modification, and use of lace-up ankle braces
- Surgery is recommended in patients who have continued pain and feelings of instability despite non-surgical treatment
- Surgery involves an incision over the outside of the ankle
- The ligaments are then cut and tightened before being anchored back to the bone
- If the ligaments are very thin or loose and require reinforcement, Dr. Dean will sometimes reinforce his repair with an internal brace
- Lateral ligament repairs are often done at the same time as surgery on the peroneal tendons and ankle arthroscopy depending on the findings of MRI
Before Surgery:
- No restrictions
- You may walk as tolerated in comfortable shoes
- A lace-up ankle brace or boot may be used for comfort
After Surgery:
- Immediately after:
- In a splint below your knee, keep splint dry
- Elevate the leg, ice, take pain medication
- No weight (use crutches, walker, knee scooter, or wheelchair)
- 2 week appointment:
- Stitches come out and steri-strips placed
- You will go into a boot and begin 50% weight bearing on the operative side
- You will progress your weight bearing in the boot over the next 4 weeks so that you are full weight bearing in the boot at your 6 week appointment
- Begin moving ankle up and down / avoid side to side motion of the ankle
- You will begin PT for range of motion
- 6 week appointment:
- Between 6-8 weeks you may transition from the boot to a supportive gym shoe
- May start turning you foot outwards (eversion) and inwards (inversion in therapy at 8 weeks
- Begin strengthening at 8 weeks
- Continue physical therapy
- 12 week appointment:
- Continue physical therapy to work on strengthening and range of motion
- May begin running
- May resume high impact activity at 3.5-4 mos if cleared by Dr. Dean