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Spine Surgeon Dr. Chooi Yue Seng specializes in Extensor Mechanism Realignment

Dr. Chooi Yue Seng is a well-known Orthopaedic and Joint Replacement Surgeon in Malaysia. Currently, he is working at ParkCity Medical Centre, Kuala Lumpur. With the experience of more than 16 years, he specializes in Spine Surgery and the treatment of joint issues. Dr. Chooi Yue Seng completed his MBBS from the University of Sydney, Australia followed by MS in Orthopaedics from University Malaya, Malaysia. He then did a fellowship from the University of Hong Kong and a Clinical Fellowship from Istanbul Spine Centre. He is an esteemed member of the Hong Kong Orthopedic Association, World Society for Endoscopic, Navigated & Minimal Invasive Spine Surgery, Malaysian Medical Association, Malaysian Academy of Medicine, Malaysian Spine Society, and Minimally Invasive Spine Surgery Society - Asia Chapter.

Extensor Mechanism Realignment

  • Who does it affect?

In some cases, this tendency is lesser than others due to their own individual body shape and bony deconstruction. Others may have it due to injury.

  • Why does it be?

 Diseases of the patellofemoral joint, that's the articulation between the bottom of the patella and the front of the femur (the trochlea groove), are veritably common.

 They can be extensively divided into two groups – patella unstableness and pain. Patella unstableness is where the patella dislocates or subluxated (incompletely dislocates).

In every one, the pull of the quadriceps muscles tends to pull the patella indirectly. Some cases are disposed to subluxation or disturbance and can dislocate their patella for the first time with less severe, and for some cases, indeed trivial trauma. Some cases without such a disposition can sustain a more severe injury that causes the patella to dislocate.


A combination of pain, swelling, unsteadiness, and tenderheartedness may be localized or extended depending upon the injury.


His opinion is frequently clear with a knowledge of side disturbance of the patella followed by pronounced pain and lump. On examination, there's tenderheartedness over the stretched MPFL.

After the pain and lump of the acute injury have settled, abnormal side movement of the patella is frequently apparent and cases are frequently veritably alive when the patella is moved indirectly (patella apprehension).

An MRI check-up is sometimes used to confirm the opinion and to identify any other injuries in the acutely painful and blown knee following a disturbance.

Non-Surgical Treatment

All cases need a period of rest and recuperation following the acute injury. This should include a program of activity to recapture a full range of movement and ameliorate muscle function around the knee.

Numerous cases are suitable to help further occurrences of subluxation or disturbance by performing exercises tutored through an activity program aimed at perfecting the capability of the quadriceps, in particular, the function of the VMO muscles to help patella disturbance.

Unfortunately, some cases continue to witness patella insecurity symptoms despite a duly performed exercise program and these cases can bear surgery to help further occurrences of disturbance.

 Surgical Treatment

This type of surgery, performed under general anesthetic, generally involves altering the position of the tibial tuberosity to which the patella tendon is attached. This alters the angle of pull of the quadriceps muscles on the patella for cases in whom this pull is likely to beget disturbance of the patella.

 The operation involves an 8 cm gash in addition to the arthroscopic lacerations over the side aspect of the upper thigh just below the knee. The tibial tuberosity is cut, moved medially, and placed in its new position with screws.


For more details about the surgery, you can consult Dr. Chooi Yue Seng, one of the best Orthopaedic surgeons in Kuala Lumpur, Malaysia.

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Published Date
: 27-Oct-2021

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