Cotton osteotomy is a surgical procedure used to correct certain types of flatfoot deformity. It focuses on the medial column, or inner side, of the foot.
The procedure involves making a controlled cut in the medial cuneiform bone and opening it slightly to improve the alignment of the front part of the foot.
It is often performed as part of a larger flatfoot reconstruction when the arch remains lowered or the front of the foot is tilted after other corrections.
Flatfoot deformity can develop when the arch collapses or the bones of the foot become misaligned. This may be related to posterior tibial tendon dysfunction, previous injury, or a structural problem that has been present since childhood.
Some patients develop a condition called forefoot varus, in which the front of the foot is tilted in a way that affects how the foot sits against the ground. A Cotton osteotomy helps correct this alignment and improve how weight is distributed across the foot.
Symptoms of Flatfoot Deformity
Patients may experience pain in the arch or heel, swelling along the inner side of the foot, difficulty walking, and fatigue with prolonged standing. The arch may appear lower than normal, and the heel may tilt outward.
The severity of symptoms varies. Some patients have a visible deformity without significant pain, while others develop increasing discomfort and difficulty with daily activities.
Diagnosis
Your doctor will examine your foot while standing and walking to assess the arch, heel position, and overall alignment. X-rays help show the position of the bones and the degree of deformity.
In some cases, a CT scan or MRI may be recommended to evaluate the bones, joints, and surrounding soft tissues, particularly when tendon problems or other structural conditions are suspected.
Non-Surgical Treatment
Treatment depends on the severity of the deformity and your symptoms. Options may include custom orthotics or supportive shoes to improve foot alignment, physical therapy to strengthen the foot and ankle, and anti-inflammatory medications to reduce pain.
Some patients may also benefit from activity modification or injections. If symptoms continue despite these treatments and the deformity affects foot function, surgery may be considered.
Cotton Osteotomy Surgery
The Cotton osteotomy is generally used when correction of the medial column is needed as part of flatfoot reconstruction.
During surgery, your surgeon makes an incision along the inner side of the foot to access the medial cuneiform. A controlled cut is made in the bone, and a small wedge is placed into the opening to improve alignment. The wedge may be made from bone graft or another graft material. Fixation may be used to help maintain the correction while the bone heals.
The procedure is often combined with other reconstructive surgeries, such as a calcaneal osteotomy or tendon repair, depending on the cause and severity of the flatfoot deformity.
Recovery After Surgery
After surgery, your foot is protected in a cast or boot. You will generally need to avoid putting weight on the operated foot for several weeks while the bone heals.
Weight-bearing is gradually introduced based on follow-up examinations and X-rays. Physical therapy may help restore strength, flexibility, and walking mechanics.
Recovery takes several months. Returning to sports and high-impact activities depends on bone healing, the procedures performed, and your progress during rehabilitation.
Risks and Complications
As with any surgery, a Cotton osteotomy has potential risks. These include infection, delayed bone healing, irritation of nearby nerves, and recurrence or incomplete correction of the deformity. When a bone graft is used, it may shift or take longer than expected to heal. Problems with fixation hardware are also possible.
Your surgeon will discuss the risks based on your specific foot structure and the other procedures planned.
Long-Term Outlook
The goal of a Cotton osteotomy is to improve foot alignment, restore a more functional arch, and reduce pain. Many patients experience improved stability and walking ability after the deformity has been corrected and the bone has healed.
The long-term result depends on the underlying condition, the extent of the deformity, and whether other parts of the foot also require correction.
When to See a Specialist
If you have a flattened arch, persistent foot pain, or difficulty walking, a foot and ankle specialist can evaluate your alignment and determine the best treatment. Surgery is not necessary for every flatfoot deformity, and the appropriate procedure depends on the specific structural problem.
Insurance and Cost
The Cotton osteotomy at Complete Orthopedics is covered by Medicare and most major insurance carriers, including Aetna, Anthem BCBS, Cigna, Empire BCBS, and UnitedHealthcare. We also work with most workers’ compensation and no-fault insurance plans.
Your out-of-pocket cost depends on your insurance plan, deductible, and coverage requirements. Call our billing team at (631) 981-2663 before scheduling to verify your benefits and discuss expected costs.
For more information, visit our Insurance Information page.
The content on this page has been authored, edited, or approved by the doctors below, and was last reviewed for accuracy on November 12, 2026.
