Knee stiffness and pain can severely limit daily activities, especially when joint damage continues to progress despite medications, injections, or physiotherapy. In such cases, total knee replacement can be a long-term and reliable solution.
With a growing emphasis on precision and faster recovery, many orthopaedic surgeons are turning to minimally invasive techniques that reduce muscle damage and promote earlier mobilization. Surgeons like Dr Imran Malik utilise careful planning and personalised approaches to improve functional outcomes.
This guide explains what total knee replacement surgery is, its different types, and what patients can expect before and after surgery, helping individuals make informed decisions about their knee care.
What Is Total Knee Replacement Surgery?
Knee replacement surgery, medically known as arthroplasty, is a procedure in which damaged cartilage and bone are removed from the knee joint and replaced with artificial implants. This procedure helps relieve pain, correct deformations, and restore smoother joint movement. When the entire joint is involved, the procedure is referred to as total knee arthroplasty.
The extent of joint damage determines whether a partial or total knee replacement surgery is required. When most compartments of the knee are affected, surgeons usually recommend full joint replacement.
Different Types of Total Knee Replacement by Surgical Technique
These techniques describe how the surgery is performed, and the extent of surrounding tissue is affected.
1. Traditional Knee Replacement
Traditional knee replacement typically involves a standard incision that allows full exposure of the knee joint. It is suitable for patients with severe arthritis or complex deformities and provides predictable, long-term results.
2. Minimally Invasive Knee Reconstruction
This approach uses smaller incisions and minimizes muscle disruption. When performed by skilled surgeons, minimally invasive total knee replacement surgery can lead to less pain, faster recovery, and earlier return to daily activities.
3. Robotic-Assisted Knee Replacement
Robotic-assisted systems support surgeons in accurately positioning implants. Improved alignment during knee replacement surgery may improve joint function and implant lifespan.
Different Types of Total Knee Replacement by Implant Design
Implant design plays a crucial role in knee stability and natural movement after surgery.
- Posterior-Stabilized (PS) Knee Replacement
This implant includes a built-in stabilizing mechanism that replaces the function of a damaged ligament removed during surgery.
- Cruciate-Retaining (CR) Knee Replacement
Cruciate-retaining implants preserve the posterior cruciate ligament, allowing more natural movement when ligament strength is adequate.
Different Types of Total Knee Replacement by Bearing Surface Material
The materials used in implants affect durability and joint motion.
- Metal-on-Plastic
This is the most commonly used implant combination and is widely preferred in knee arthroplasty due to its durability and smooth performance.
- Metal-on-Metal
These implants were developed for durability but are now less commonly used because of concerns related to metal wear particles.
- Ceramic-on-Ceramic or Ceramic-on-Plastic
Ceramic-based implants reduce wear and provide smoother movement, selected based on patient activity level and clinical needs.
Different Types of Total Knee Replacement by Bearing Movement
Bearing movement refers to how the implant components interact during motion.
- Fixed Bearing Knee Replacement
In fixed bearing implants, the plastic insert remains attached to the metal base. It is suitable for most patients undergoing knee surgery.
- Mobile Bearing Knee Replacement
Mobile bearing implants allow limited movement of the plastic insert and are often recommended for younger or more active individuals.
Other Variations of Total Knee Replacement
These variations relate to how the implant is fixed and emerging technologies.
- Cemented Knee Replacement
Bone cement is used to secure the implant, providing immediate fixation and stability, particularly beneficial for older patients.
- Cementless Knee Replacement
Cementless implants rely on natural bone growth for stability and are usually recommended for patients with good bone quality.
- Smart or Bionic Knee Replacement
These advanced systems use sensor-based technology to monitor joint movement and recovery and represent future developments in knee replacement care.
What to Expect During Total Knee Replacement Surgery
Before surgery, patients undergo a detailed evaluation, imaging tests, and medical clearance. The total knee replacement surgery procedure typically takes one to two hours. Early physiotherapy and mobilization usually begin shortly after surgery to support recovery.
How to Know If You Need Total Knee Replacement
You may be advised to consider surgery if:
- Knee pain continues despite medication and physiotherapy
- Standing, walking, or climbing stairs becomes difficult
- Stiffness significantly restricts movement
- Imaging confirms advanced joint damage
An orthopaedic surgeon carefully reviews these factors before recommending surgery.
What Happens During a Total Knee Replacement Surgery Procedure?
During the procedure, damaged bone and cartilage are removed, and artificial implants are placed to restore alignment and function. The surgeon carefully selects the implant type and fixation method based on age, bone quality, and activity level. Surgeons like Dr. Imran Malik, who specialize in minimally invasive approaches, focus on reducing muscle damage, lowering infection risk, and improving post-operative mobility.
Benefits of Minimally Invasive Total Knee Replacement
Minimally invasive techniques offer several advantages for patients undergoing total knee replacement:
- Smaller incisions and reduced surgical trauma
- Lower risk of post-surgical infection
- Faster healing and recovery
- Shorter hospital stays
- Improved mobility, especially in elderly patients
Careful surgical planning and the use of durable, MRI-compatible implants contribute to smoother recovery.
FAQs
How long does a knee implant last?
Most knee implants can last up to 20 years with proper care.
Is minimally invasive knee replacement suitable for everyone?
Not at all. It depends on one’s knee condition, overall health, and bone quality.
How long does recovery take after surgery?
After knee replacement surgery, initial recovery takes a few days, while full recovery with physiotherapy can take several months.
When can patients walk after knee replacement?
Most patients begin walking with assistance within one to two weeks.
Does surgeon experience affect outcomes?
Yes, surgeon expertise significantly influences precision, implant selection, and recovery success.
Final Thoughts
Total knee replacement is a highly effective solution for chronic knee pain and reduced mobility. As surgical techniques continue to advance, orthopaedic surgeons with focused experience, such as Dr Imran Malik, apply patient-specific planning and minimally invasive approaches to improve accuracy and functional outcomes. With multiple surgical techniques, implant designs, and fixation methods available today, treatment can be carefully personalised to suit each patient’s condition, activity level, and long-term goals. These advances support faster recovery, better joint movement, and an overall improvement in quality of life.