What Is Knee Osteotomy and Limb Realignment?
Knee osteotomy is a joint-preserving surgical procedure that involves cutting and reshaping the tibia (shinbone) or femur (thighbone) to improve leg alignment. Limb realignment changes the way weight is distributed through the knee joint, reducing stress on the damaged portion of the knee while preserving healthy cartilage and bone.
What Are the Benefits of Knee Osteotomy and Limb Realignment?
For appropriately selected patients, knee osteotomy and limb realignment may offer several advantages, including:
- Relief of knee pain
- Improved knee function and mobility
- Preservation of the natural knee joint
- Redistribution of weight away from damaged cartilage
- Delayed need for total knee replacement
- Improved leg alignment
- Ability to maintain an active lifestyle
When Is Knee Osteotomy and Limb Realignment Recommended?
This procedure may be recommended for patients with specific alignment-related knee conditions, including:
- Unicompartmental knee arthritis
- Bow-legged (varus) alignment
- Knock-kneed (valgus) alignment
- Cartilage damage affecting one side of the knee
- Early-stage osteoarthritis
- Active patients who wish to delay knee replacement
- Knee pain related to abnormal weight distribution
What Does Preparation for Knee Osteotomy and Limb Realignment Involve?
Preparation begins with a thorough orthopedic evaluation and imaging studies such as X-rays, MRI scans, or CT scans. These tests help assess the degree of arthritis, cartilage damage, and limb alignment. The surgeon will carefully measure the correction needed to restore proper alignment. Patients may undergo a medical evaluation, review medications, and receive instructions regarding surgery, recovery, and postoperative rehabilitation.
How Is Knee Osteotomy and Limb Realignment Performed?
The procedure is typically performed under general or regional anesthesia. The surgeon makes an incision near the knee and carefully exposes the bone that requires correction.
Depending on the patient's alignment, a wedge of bone may be removed (closing wedge osteotomy) or a controlled opening may be created in the bone (opening wedge osteotomy). The bone is then repositioned to shift weight away from the damaged portion of the knee and redistribute forces more evenly across the joint.
Once the desired correction is achieved, the bone is stabilized using plates, screws, or other fixation devices. In some cases, bone graft material may be used to support healing. After alignment is confirmed, the incision is closed and the leg is protected while the bone heals.
What to Expect During Recovery After Knee Osteotomy and Limb Realignment?
Recovery requires a commitment to rehabilitation and physical therapy. Patients may need crutches or other assistive devices for several weeks while the bone heals. Physical therapy focuses on restoring range of motion, strength, balance, and walking mechanics. Most patients gradually return to normal daily activities over several months, although complete recovery and return to higher-level activities may take longer.
What Are the Risks and Complications of Knee Osteotomy and Limb Realignment?
As with any surgical procedure, potential risks and complications may include:
- Infection
- Bleeding
- Blood clots
- Nerve or blood vessel injury
- Delayed bone healing
- Nonunion of the bone
- Persistent pain
- Knee stiffness
- Overcorrection or undercorrection of alignment
- Need for future surgery, including knee replacement
