Dr Yuen Jin ChuanOrthopaedic and Arthroplasty Surgeon
Mapping the knee
Portrait of Dr Yuen Jin Chuan

Dr Yuen Jin Chuan

Consultant Orthopaedic and Arthroplasty Surgeon

Assessment and treatment of knee and hip pain, sports injuries and fractures at Sunway Medical Centre Velocity, Cheras. Treatment options include care with and without surgery.

Robotic-assisted joint replacement: knee and hip with MAKO, and knee with CORI.

Consultations in Bahasa Malaysia, English, Mandarin, Cantonese, Bahasa Indonesia and Hakka.

Scroll to see how robotic-assisted knee replacement works.

Step 1

Mapping the knee

A CT scan, or a mapping done in theatre, builds a 3D model of your knee. The method depends on the robotic system. The red patches show where a worn joint surface might be.

Step 2

Planning the implant

The surgeon uses the model to plan implant size, position and leg alignment. Blue shows the plan. The dashed line shows how weight passes through the leg.

Step 3

Preparing the bone

The surgeon performs the operation and controls the instrument. The robotic arm helps keep it within the planned boundary.

Step 4

Fitting the implant

Metal parts cover the ends of the thigh bone and shin bone, with a plastic spacer between them. The surgeon checks movement and stability before closing the wound. The kneecap is hidden here to show the implant.

Knee treatment options and risks
How long recovery takes

Mapping the hip

The hip works in a similar way

Here, the plan focuses on where the socket sits and how the leg lines up.

Step 1

Mapping the hip

A CT scan shows the pelvis and thigh bone in 3D. The red patch shows where a worn joint surface might be.

Step 2

Planning the implant

The surgeon plans the size and position of the socket and stem. Blue shows the plan, and the dashed line shows the socket's planned angle.

Step 3

Preparing the socket

The surgeon removes the worn ball of the joint and prepares the socket. The robotic arm helps guide the reamer and the position of the new socket.

Step 4

Fitting the implant

A metal cup with a smooth liner replaces the socket. A stem inside the thigh bone carries a new ball. The thigh bone is shown cut open here to reveal the stem.

Hip treatment options and risks

What robotic assistance can and cannot do

Robotic assistance does not suit every patient and does not remove the risks of surgery. Your doctor can explain what this means for you.

Read more about robotic knee replacement

What brings you in?

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