Osteotomy of the Lower Limb

Lower limb osteotomy is a surgical procedure used to correct alignment of the leg and redistribute load within the knee joint. It is commonly considered in patients with knee pain associated with malalignment, cartilage wear, or early arthritis, particularly in active individuals where preserving the natural knee joint remains an important goal.

An osteotomy involves carefully cutting and repositioning bone to improve alignment and reduce pressure on the affected part of the knee.

Dr Alex Nicholls provides assessment and treatment for lower limb alignment conditions and knee pathology, with treatment recommendations tailored to the individual patient’s symptoms, imaging findings, activity level, and long-term goals.

What Is a Lower Limb Osteotomy?

The alignment of the lower limb influences how forces travel through the knee joint during walking and activity.

In some patients, abnormal alignment may place excessive load on one side of the knee, contributing to:

• Cartilage wear

• Meniscal damage

• Knee pain

• Early arthritis progression

A lower limb osteotomy aims to shift load away from the damaged area of the knee by changing the alignment of the leg.

Why Is Alignment Important?

When the leg is aligned unevenly, increased stress may occur within:

• The medial (inner) compartment of the knee

• The lateral (outer) compartment of the knee

Over time, this can contribute to:

• Cartilage degeneration

• Joint overload

• Progressive arthritis

• Reduced function during activity

Correcting alignment may help improve joint mechanics and redistribute load more evenly across the knee.

Types of Osteotomy Around the Knee

There are different forms of osteotomy depending on the location of deformity and the part of the knee being overloaded.

Common procedures include:

• High tibial osteotomy (HTO)

• Distal femoral osteotomy (DFO)

• Combined osteotomy procedures in selected cases

The procedure recommended depends on:

• Alignment

• Cartilage wear

• Age and activity level

• Severity and location of symptoms

High Tibial Osteotomy (HTO)

A high tibial osteotomy is performed on the upper tibia (shin bone).

It is commonly considered when:

• Arthritis or cartilage wear affects the inner side of the knee

• The leg alignment places increased load through the medial compartment

• The patient remains relatively active

The aim is to redistribute load away from the damaged area of the knee.

Distal Femoral Osteotomy (DFO)

A distal femoral osteotomy is performed on the femur (thigh bone).

This procedure may be considered when:

• Alignment issues arise from the femur

• The lateral compartment of the knee is overloaded

• There is valgus (“knock-knee”) alignment

As with HTO, the goal is to improve alignment and reduce uneven joint loading.

Who May Be Suitable for Lower Limb Osteotomy?

Osteotomy may be considered in patients with:

• Knee pain associated with malalignment

• Early or isolated compartment arthritis

• Cartilage injury

• Meniscal deficiency

• Active lifestyles where joint preservation is a goal

Suitability depends on:

• Age

• Alignment

• Cartilage condition

• Knee stability

• Activity demands

• Overall joint health

Not every patient with arthritis or knee pain is suitable for osteotomy surgery.

How Is Lower Limb Alignment Assessed?

Assessment generally involves:

• Clinical examination

• Weight-bearing X-rays

• Long-leg alignment imaging

• MRI scans in selected cases

These investigations help determine:

• Where the deformity originates

• Which part of the knee is overloaded

• Whether osteotomy may be appropriate

Careful pre-operative planning is an important part of osteotomy surgery.

What Happens During Osteotomy Surgery?

During surgery:

• The bone is carefully cut

• Alignment is adjusted

• The bone is stabilised using plates and screws

The specifics of the procedure depend on:

• The type of osteotomy

• The amount of correction required

• The location of the deformity

In some cases, additional procedures may also be performed depending on the condition of the knee.

Recovery After Osteotomy Surgery

Recovery after lower limb osteotomy is gradual and varies depending on the procedure performed.

Early Recovery

Initial recovery focuses on:

• Pain and swelling management

• Protecting the osteotomy site

• Gradual movement

• Walking progression

Weight-bearing restrictions may apply during early healing depending on the procedure.

Rehabilitation

Physiotherapy and rehabilitation are important components of recovery.

Rehabilitation may involve:

• Strengthening exercises

• Range of motion work

• Walking retraining

• Balance and control exercises

Recovery timelines vary between individuals.

Return to Activity

Return to activity depends on:

• Bone healing

• Strength recovery

• Knee function

• Rehabilitation progression

The timing of return to sport or higher-level activity varies depending on the individual patient and procedure performed.

Why Consider Osteotomy Instead of Knee Replacement?

In selected patients, osteotomy may help preserve the natural knee joint by redistributing load away from damaged areas.

This may be considered particularly in:

• Younger patients

• Active individuals

• Patients with isolated compartment wear

• Patients wishing to delay joint replacement surgery where appropriate

Treatment recommendations depend on the overall condition of the knee and individual patient goals.

Frequently Asked Questions

What is a lower limb osteotomy?

A lower limb osteotomy is a procedure used to correct leg alignment and redistribute load within the knee joint.

What conditions can osteotomy treat?

Osteotomy may be used in selected patients with malalignment, cartilage wear, meniscal deficiency, or early arthritis affecting one part of the knee.

Is osteotomy an alternative to knee replacement?

In some patients, osteotomy may be considered as a joint-preserving option before knee replacement surgery becomes necessary.

How long does recovery take after osteotomy?

Recovery varies depending on the procedure performed, bone healing, rehabilitation progression, and overall knee condition.

Will I need physiotherapy after surgery?

Physiotherapy is commonly recommended following osteotomy surgery to assist with recovery, strength, and movement.

Can I return to sport after osteotomy surgery?

Return to sport depends on healing, strength recovery, and rehabilitation progress. Timing varies between individuals.

Evidence-Based Knee Care

Dr Alex Nicholls maintains an active involvement in orthopaedic research and education relating to knee surgery, sports injuries, biomechanics, and lower limb alignment procedures.

Treatment recommendations are based on careful clinical assessment, imaging findings, symptoms, alignment analysis, and individual patient goals.