Orthopedic foot and ankle surgeons cut the heel bone (calcaneus) and slide it into a new position to relieve pain and realign the foot during this surgical procedure. The goal is mechanical: realign the hindfoot so weight travels through the ankle and arch in a healthier pattern, offloading damaged tendons and joints. Surgeons use it most often to correct adult-acquired flatfoot, cavus (high-arched) foot, and chronic hindfoot instability.
This guide covers the anatomy behind the cut, the main types of realignment, what happens in the operating room, and what a realistic recovery timeline looks like.
The Calcaneus and Why Its Position Matters
Stand barefoot on a hard floor and press your thumb into the back of your heel. That dense block of bone is the calcaneus, the largest tarsal bone in the foot and the foundation that every step lands on. During walking, the calcaneus acts as a lever for push-off and as a shock absorber when the heel strikes the ground.
Hindfoot alignment dictates how force travels from the ankle down into the arch. When the calcaneus sits in a neutral position, the weight-bearing axis passes through the center of the ankle and straight down the leg. Even a few millimeters of tilt, inward or outward, shifts load distribution across the subtalar joint and the surrounding soft tissues. Over time, that small misalignment compounds into tendon strain, joint wear, and visible arch collapse.
How Misalignment Shows Up Day to Day
A heel that drifts outward (hindfoot valgus) often pairs with a flattened arch and a tendon along the inside of the ankle that becomes overstretched. A heel that tilts inward (hindfoot varus) concentrates pressure on the outer border of the foot and can produce a high, rigid arch. Both patterns leave traces: shoes wearing down unevenly along one edge, a tendency to roll the ankle on uneven ground, and aching that worsens after long walks or standing shifts.
Defining the Procedure and the Problems It Corrects
Metal screws hold the repositioned heel bone in place after a surgeon makes a precise cut through it during this controlled operation. The surgeon does not remove the bone; the calcaneus is shifted, rotated, or wedged open so the hindfoot lands in a more balanced alignment. Over the following months, the bone heals in its new position.
The conditions most commonly treated with a calcaneal osteotomy procedure include adult-acquired flatfoot deformity (often linked to posterior tibial tendon dysfunction), cavus foot deformity from neurologic or hereditary causes, and hindfoot malalignment that follows trauma or prior surgery. Hindfoot osteotomies are recognized as a joint-preserving option for flexible deformities, where the ankle and subtalar joints still move normally and can be salvaged rather than fused.
Why Surgeons Combine Procedures
Bone alignment rarely fails alone. A flattened arch typically involves a stretched posterior tibial tendon and a strained spring ligament on the inside of the foot. A cavus foot often pairs with tight calf muscles or an unstable ankle. For that reason, surgeons frequently combine the osteotomy with tendon transfers, ligament repair, or Achilles lengthening in a single operation. The bone cut sets the stage; the soft-tissue work fine-tunes stability.
Because the calcaneus rarely shifts alone, the procedure typically pairs the bone cut with soft-tissue work to stabilize everything around it.
The Main Types and When Each Is Used
Four core osteotomy patterns dominate modern hindfoot reconstruction. The choice depends on which direction the heel has drifted and whether the deformity is flexible or rigid.
| Osteotomy Type | Direction of Shift | Typical Use Case |
|---|---|---|
| Medial displacement calcaneal osteotomy (MDCO) | Heel shifted inward | Adult-acquired flatfoot with posterior tibial tendon dysfunction |
| Lateralizing calcaneal osteotomy | Heel shifted outward | Cavus foot with varus heel and lateral column overload |
| Lateral column lengthening (Evans procedure) | Wedge opened at the front of the calcaneus | Flexible flatfoot needing arch restoration |
| Calcaneal slide osteotomy (Koutsogiannis) | Posterior tuber shifted | Flatfoot with significant heel valgus |
Medializing vs. Lateralizing Calcaneal Osteotomy
Sliding the back portion of the heel bone inward restores the lever arm of the posterior tibial tendon and reduces strain on the inside of the ankle. A lateralizing it does the opposite, moving the heel outward to unload the outer border of the foot in a cavus deformity. The Dwyer osteotomy, an older but still-used lateralizing variant, removes a wedge of bone to tilt the heel into valgus, the position used to counteract a varus deformity.
Lateral Column Lengthening and the Evans Procedure
When the front of the heel bone is opened like a book and a bone graft wedged into the gap, the arch lifts and the foot lengthens slightly on the outside. This lateral column lengthening, often called the Evans osteotomy, is favored for younger patients with flexible flatfoot and a preserved subtalar joint. It is rarely used in isolation; surgeons typically add a medializing osteotomy or a tendon transfer to balance the reconstruction.
Inside the Operating Room
The patient lies on their back or side, and anesthesia (general or regional) keeps the area pain-free. A roughly 5-centimeter incision runs along the outer side of the heel, just below the level where the ankle bends. The surgeon protects the sural nerve and the peroneal tendons, then exposes the calcaneus under sterile conditions.
Using a powered saw, the surgeon makes a precise cut through the bone in a plane that allows the planned shift. The heel is then slid, tilted, or wedged open to the new alignment. One or two titanium screws, sometimes a small plate, hold the bone in place while it heals. In many cases, the same operation includes a tendon transfer (such as the flexor digitorum longus to the medial cuneiform), an Achilles lengthening, or a spring ligament repair.
How Long the Operation Takes
A standalone it typically runs 45 minutes to 90 minutes. Add a tendon transfer or ligament reconstruction and the case stretches toward two hours. Fluoroscopy confirms the new alignment before the incision is closed.
Surgical time is only one piece of recovery, since healing the bone and retraining the soft tissues drive the overall timeline.
Recovery, Rehabilitation, and Return to Activity
it recovery time follows a fairly predictable arc, though individual healing varies with age, bone quality, and whether other procedures were performed at the same time.
- Week 0–2: The foot rests in a splint or below-knee cast. Stitches come out around day 10 to 14, and the leg stays elevated to control swelling.
- Week 2–6: A removable boot replaces the cast. No weight is placed on the heel; crutches or a knee scooter handle mobility.
- Week 6–8: First follow-up X-rays. If bone healing looks promising, partial weight-bearing begins in the boot.
- Week 8–12: Transition to a stiff-soled shoe. Physical therapy starts with ankle range-of-motion, then strengthening and gait retraining.
- Month 4–6: Low-impact exercise (stationary bike, swimming, elliptical) returns. Walking longer distances becomes comfortable.
- Month 6–12: Running, hiking, and impact activity gradually resume as bone consolidation completes and balance returns.
What Healing Feels Like
Expect swelling in the foot and ankle for several months, especially at the end of the day. Ice, elevation, and compression stockings help. Pain is most noticeable in the first two weeks and is typically managed with short courses of oral analgesics. The screws usually stay in place permanently unless they cause irritation under the skin, in which case removal is a brief outpatient procedure once the bone has fully healed.
Implants are one small risk among several, and weighing them against the procedure’s benefits shapes whether surgery makes sense.
Tip: plan for at least two weeks off your feet entirely, and arrange help at home before the operation. Most of the early frustration comes from logistics, not the incision itself.
Risks, Limitations, and the Decision to Proceed
No orthopedic surgery is risk-free, and it complications are real even in skilled hands. The most common issues include wound healing problems along the outer heel (where the skin is thin and blood supply is modest), sural nerve irritation or numbness, hardware prominence that requires screw removal, and delayed bone union. Deep vein thrombosis and infection are less common but more serious.
The overall complication rate for hindfoot osteotomies stays in the single digits when performed by fellowship-trained foot and ankle surgeons, but the exact figure depends on the specific procedure and patient factors.
Success depends on three things: correct patient selection, a flexible deformity that can be corrected without fusing the joint, and adherence to the postoperative weight-bearing restrictions. Smokers, people with diabetes, and those with poor bone density face higher rates of delayed healing. A rigid, arthritic subtalar joint is not a good candidate for osteotomy alone; that scenario usually calls for a subtalar fusion to stop painful joint motion.
When to See a Specialist
Persistent arch collapse, progressive heel drift, or pain that does not improve after three to six months of bracing, orthotics, and physical therapy deserves evaluation by a foot and ankle orthopedic surgeon. A standing X-ray, and sometimes a weight-bearing CT, reveals whether the deformity is flexible enough to correct with bone realignment or whether a fusion is the more durable option.
Your surgeon can outline whether a it for flatfoot, a tendon transfer, or a combined reconstruction fits your specific anatomy and goals.
The Bottom Line
A it is a joint-preserving operation that moves the heel bone into a healthier alignment so the ankle, arch, and surrounding tendons stop fighting each other. It works best for flexible deformities in active adults, and its success depends as much on careful patient selection and postoperative patience as on surgical skill. Before scheduling surgery, get a clear diagnosis, ask about the specific osteotomy type being proposed, and confirm a realistic recovery plan with your specialist.
FAQ
What is a calcaneal osteotomy used for?
It is used to correct hindfoot misalignment, most commonly adult-acquired flatfoot from posterior tibial tendon dysfunction, cavus (high-arched) foot deformity, and chronic heel instability. The cut and shift offloads damaged tendons and restores a more neutral weight-bearing axis through the ankle and arch.
How long does it take to recover from a calcaneal osteotomy?
Most patients are non-weight-bearing for 6 to 8 weeks, transition to a boot and then a regular shoe over the following month, and return to full activity including impact exercise between 4 and 6 months. Bone remodeling continues for up to a year.
What are the risks of calcaneal osteotomy surgery?
Complications include wound healing problems, sural nerve irritation, hardware prominence, delayed bone union, infection, and deep vein thrombosis. Risk is lower with fellowship-trained foot and ankle surgeons and when patients avoid smoking and follow weight-bearing restrictions closely.
Is calcaneal osteotomy painful?
The first two weeks are the most uncomfortable, typically managed with prescribed oral analgesics and elevation. Pain then settles into a dull ache that fades as bone heals. Long-term discomfort is uncommon once rehabilitation is complete.
Do you need a cast after calcaneal osteotomy?
Most surgeons use a splint for the first two weeks, then switch to a removable walking boot. A traditional cast is sometimes used instead of a boot, especially when soft-tissue repair was performed at the same time.
When can I walk after calcaneal osteotomy?
Walking on the operated foot typically begins around 6 to 8 weeks after surgery, starting with partial weight-bearing in a boot. Full unassisted walking in regular shoes usually returns by 10 to 12 weeks.
