Total Knee Replacement

Knee X-rayHow is it done?

A long incision is made down the front of the knee.  The gliding surfaces of the bones are trimmed off.  Usually about 1 cm of bone is removed.  This is the total amount of bone removed, including both sides of the joint.   The gliding surfaces are replaced with metal and plastic.

What does it achieve?

The rough grating gliding surfaces are replaced with smooth metal and plastic.  The pain of the arthritis is removed.  Joint movement is maintained.

Recovery

Hospital 5 – 10 days.  Mobile around the house during the first six weeks.  Comfortable enough to have a trip out to the shops at six weeks post-op.  Return to most activity by three months, though still knee pain each day.  Full recovery one year.

Complications

Infection 1 – 2%.  This can take up to a few years to show up.  Prosthesis failure 1% per year.  The prosthesis will need to be removed and a new prosthesis put in.  Stiffness.


Total Hip Replacement

Hip Replacement X-RayHow is it done?

A curved incision is made in the buttock.  The hip is a ball and a cup.  The ball is jumped out of the cup and removed.  The cup is cleaned out and a cup prosthesis inserted.  A ball on a stem is inserted down the thigh bone and the ball jumped back into the cup.

What does it achieve?

The rough grating bony surfaces are replaced with a smooth prosthesis.

Recovery

Hospital 5 – 10 days.  Mobile enough to get around the house for the first six weeks.  Comfortable enough for a trip to the shops at six weeks post-op.  Most activities by three months post-op, though hip pain each day.  Full recovery one year.

Complications

Infection 1 – 2%.  This can take up to a few years to show up.  Prosthesis failure 1% per year.  The old prosthesis will need to be removed and a new prosthesis put in.  Dislocation.  A few percent of people will suffer one dislocation.  A small percentage will require re-operation to make the hip more stable.