What happens in keyhole surgery to remove a loose body from the knee?

During the operation

The procedure is done under general or spinal anaesthesia, as the anaesthetist advises. The knee is filled with sterile fluid so the surgeon can see clearly on a screen. Because loose bodies move, finding them can take careful searching of every recess, including behind the kneecap and at the back of the joint.

The fragment is grasped and removed through one of the small incisions, which is sometimes enlarged slightly for a bigger piece. Several fragments may be removed in one operation.

Treating the source

• A rough edge of cartilage where the fragment broke off is smoothed
• A crater in the joint surface may be treated with a cartilage technique if large enough
• A large fresh fragment in a young patient is sometimes fixed back rather than removed
• Other problems found, such as a meniscus tear, are dealt with as planned beforehand
• A kneecap that keeps dislocating may need a separate stabilising procedure

Recovery

When only a loose body is removed, recovery is usually quick. Most people walk the same day, sometimes with crutches for a few days for comfort. Desk work is often possible within about a week, and sports can usually restart over several weeks once swelling settles and strength returns.

If cartilage repair or fixation of a fragment was needed, recovery is longer, with protected weight-bearing and a more gradual rehabilitation plan.

Planning surgery at Aman Hospital

Before surgery, Dr. Gelber reviews your X-rays and MRI, explains what he expects to find and what might need doing, and agrees the plan with you. He will also explain the general risks of arthroscopy, such as infection, blood clots and stiffness, which are uncommon. For cost and insurance, check with Aman Hospital and your insurer, as these depend on what the operation involves.