Meniscal transplant is an operation designed to replace a torn, defunctioned or removed meniscus with a new meniscus from donor tissue. The aim of meniscal transplant surgery is to slow down the degenerative change within the knee, improve pain and function.
There are two menisci in each knee, one on the inside (medial meniscus) and one on the outside (lateral meniscus). They are c-shaped, made of a type of cartilage, and function both as shock absorbers and stabilisers of the knee. In a healthy knee, the meniscus transmits over 50% of the load in extension, and over 90% of the load in flexion.
Arthroscopic views of a normal vs a deficient meniscus
Meniscal deficiency increases the contact pressures by 235-335% on the articular cartilage within the knee, predisposing the knee to early onset osteoarthritis. Unstable, or progressive meniscal tears in younger patients puts them at higher risk of degenerative knee disease. Dr Radic’s preferred treatment method is to repair the existing meniscus, but on occasion the meniscus is too deficient, and consideration for meniscal transplant can be made.
Arthroscopic views during meniscal transplant surgery
The ideal candidate for meniscal transplantation is a younger patient who does not have features of osteoarthritis yet. These patients tend to have pain due to the meniscal deficiency, and other treatment methods such as meniscal repair and non-operative measures have been trialled. In these circumstances, meniscal transplantation can be very successful.
An MRI scan of your knee is used to determine the appropriate size and shape of the transplanted tissue. Dr Radic then needs to ‘match’ the required size and shape with available donor tissue, to determine an appropriate fit. It’s important the donor tissue comes from a reputable ‘tissue bank’, much like a blood bank. The ideal tissue is sterilised to prevent infection, but importantly not ‘irradiated’ as it damages the cells within the donor tissue effecting its function.
Arthroscopic view of a transplanted meniscus
Once a suitable match is found, surgery can proceed. Surgery is performed arthroscopically, via ‘keyhole’ surgery. This reduces post-operative pain, allowing patients to be discharged after only one night in hospital. The transplanted meniscus is introduced in to the knee in the correct orientation, and then fixed to the bone and the joint capsule via sutures and anchors, to stabilise the transplanted tissue.
Recovery from Meniscal Transplant Surgery is lengthy. Each surgery is specific, so recovery timeframes can vary. However, most patients can expect to use crutches for 6-8 weeks, with the use of a hinged knee brace during this time. The earliest stages of recovery focus on reduction of swelling, range of motion and pain relief.
Most patients are confident with their new meniscus by the 6-month period, with complete recovery taking up to 1-year post operatively.
If you are considering having meniscal transplant surgery, make an appointment with Dr Radic to discuss your treatment options.
For all appointments and enquiries, please contact us on:
Alternatively, please call the switchboard on 08 9212 4200 and ask for Dr Radic's rooms.
Perth Orthopaedic & Sports Medicine Centre
31 Outram Street
West Perth WA 6005
4 Antony Healthcare
4 Antony Street
Palmyra WA 6157
100 Stephenson Ave
Mount Claremont WA 6010
36 Frederick St
Djugun WA 6725