In my practice, I often see Bangladeshi patients with knee pain who are still active, still working, and not yet ideal candidates for knee replacement. Some of them have damage concentrated in one part of the knee, along with a leg alignment problem that keeps pushing too much body weight onto the painful side. In that situation, knee preservation osteotomy surgery can be an important option to discuss. [1][2]

Osteotomy is a joint-preserving operation. It is different from knee replacement. Instead of removing the joint surfaces and replacing them with implants, I reshape and realign the bone so that pressure moves away from the worn area of the knee. For the right patient, this can reduce pain, improve walking, and delay the need for joint replacement. [1][3]

One important point I want Bangladeshi patients to understand is that osteotomy is not for every painful knee. It is a targeted mechanical solution for a specific knee pattern. The value of the operation depends heavily on proper patient selection, accurate planning, and good rehabilitation afterward. [1][4]

What knee preservation osteotomy surgery means

An osteotomy means cutting and repositioning a bone to improve alignment. Around the knee, this is usually done in the tibia or femur, depending on where the deformity and overload are located. The most commonly discussed operation is high tibial osteotomy, which is often used when the inner side of the knee is taking too much load in a bow-leg pattern. Distal femoral osteotomy may be used in selected knock-knee patterns where the overload is more on the outer side. [1][3]

The main principle is simple: if the line of weight-bearing passes repeatedly through the damaged compartment of the knee, pain and cartilage wear usually continue. If we can safely correct that line, we may reduce stress on the damaged side and help preserve the natural joint for longer. [1][5]

When I consider osteotomy instead of knee replacement

I usually think about osteotomy when the patient is still relatively active, the arthritis is not affecting the whole knee equally, and the knee still has enough motion and biological potential to justify preservation. [1][3]

Common situations where osteotomy may help

• pain mainly on one side of the knee
• bow-leg or knock-knee alignment
• early to moderate unicompartmental osteoarthritis
• cartilage wear concentrated in one compartment
• younger or middle-aged active adults who want to preserve their own joint
• selected patients who need alignment correction to support ligament or cartilage procedures [1][3][4]

In Dhaka, I also think about the patient’s real daily life. Many people still need to use stairs frequently, walk outdoors, commute in traffic, manage family responsibilities, or continue work that puts stress on the knees. For such patients, preserving the native knee may be a reasonable goal when the disease pattern fits. That said, this is not a shortcut or a cosmetic alignment correction. It is a reconstructive operation that has to match the pathology. [1][2]

Who is usually not a good candidate

Not every painful arthritic knee should be treated with osteotomy. When the joint damage is already widespread, or the knee is very stiff or unstable in a way that osteotomy alone cannot address, knee preservation becomes less predictable. [1][3]

Situations where osteotomy may be a weaker option

• advanced arthritis involving multiple compartments
• severe stiffness with poor motion
• inflammatory arthritis such as active rheumatoid disease
• major untreated instability
• medical conditions that make bone healing difficult
• inability to follow a structured rehabilitation plan [1][3]

I usually explain to patients that deciding between osteotomy and replacement is not about which operation sounds bigger or smaller. It is about which operation best fits the actual condition of the knee. A poorly selected osteotomy can disappoint a patient just as much as an unnecessarily early replacement can. [1][4]

Why alignment matters so much in knee preservation

The knee does not work in isolation. It works as part of the entire lower limb mechanical axis. When that axis is shifted, one compartment of the knee can become overloaded over many years. In a varus, or bow-leg, knee, the medial compartment often carries too much force. In a valgus, or knock-knee, pattern, the lateral compartment may take more stress. [1][5]

What I evaluate before recommending surgery

• where exactly the patient feels pain
• whether the pain matches the overloaded compartment
• standing alignment of the leg
• range of motion
• ligament stability
• weight-bearing X-rays
• long-leg alignment films when needed
• MRI in selected cases, especially if meniscus, cartilage, or ligament status matters [1][3]

This preoperative evaluation is one of the most important parts of success. In my practice, I do not recommend osteotomy based on symptoms alone. The mechanical problem has to be clearly demonstrated and clinically meaningful. [1][4]

Types of knee osteotomy surgery

The exact type depends on where the deformity sits and which part of the knee is overloaded.

High tibial osteotomy

This is often used when the leg has varus alignment and the inner side of the knee is wearing out. The correction is made in the upper tibia to shift load toward the healthier side of the knee. [1][3]

Distal femoral osteotomy

This may be considered when valgus alignment is the main problem and the overload is more on the lateral side of the knee. In those cases, the femur rather than the tibia may be the correct place to realign. [1][3]

Open-wedge and closing-wedge techniques

There are different technical methods. In simple terms, I either open a controlled wedge or remove a wedge of bone, then stabilize the corrected alignment with internal fixation such as a plate and screws. The exact method depends on anatomy, correction goals, and the full surgical plan. [1][3]

Patients do not need to memorize these technical details. What matters is understanding the purpose of the operation: improving the load path through the knee so that symptoms and progression may be better controlled. [1][5]

What results can patients realistically expect

I discuss osteotomy with realistic expectations. The goal is usually pain reduction, functional improvement, and delay of joint replacement, not a promise of a permanently normal knee. [1][3]

Recent reviews continue to show that high tibial osteotomy can provide good clinical outcomes and survivorship in appropriately selected patients, including some with more advanced medial compartment disease, but success still depends on selection, technique, and follow-up. [4][5]