Lower-limb Prostheses

Osseointegrated Prostheses for the Rehabilitation of Amputees, OPRA, enhance quality of life and offer a greater degree of freedom in everyday life for nine in every 10 patients.

Problems with socket-suspended prostheses

The majority of people who use prostheses have reported a range of problems and difficulties with the prosthetic socket.

By surgically implanting a titanium screw into the thighbone, the prosthesis can instead be attached without using a socket. The prosthesis always fits, always attaches correctly and is always held firmly in place. Osseointegration solves many problems related to socket-suspended prostheses.

Osseointegrated Prostheses for the Rehabilitation of Amputees, OPRA, enhance quality of life and offer a greater degree of freedom in everyday life for nine in every 10 patients.


  • Greater mobility
: With a bone-anchored attachment, you can move more freely but also on a more regular basis, as you will not need to worry about chafing or discomfort from a socket.
  • Stable attachment
: A bone-anchored prosthesis is attached without using a socket, thereby ensuring stability. Another benefit is that it only takes a few seconds to attach the prosthesis.
  • Improved sitting comfort
: The absence of a prosthetic socket will improve comfort and will enable patients to sit more comfortably and also cross their legs.
  • Reduced pressure, sores and pain: 
In a Swedish scientific survey of patients with unilateral above-knee amputations, 72% report problems with heat and sweating in the prosthetic socket, while 62% report problems with chafing. With a bone-anchored prosthesis, you no longer need to think about these sources of discomfort.
  • Osseoperception
: The patients experience improved sensory feedback because of the phenomenon of sensation through the bone, i.e. osseoperception.
  • Enhanced quality of life
The reduction of problems associated with the prosthetic socket results in enhanced quality of life.

Implant surgery

The treatment consists of two operations with a six-month interval. In the first operation, a specially constructed titanium screw (a fixture) is mounted into the residual femur. The period of hospitalisation is usually about seven days.

In the second operation, an abutment is added to the fixture. The abutment protrudes through the skin. In order to optimise skin healing, you need to remain in bed. The period of hospitalisation is usually 10-14 days and you will not be allowed to undertake any heavy exercise or stretching over the next few weeks.


After the skin penetration area has healed, which is approximately six weeks after the second operation, loading of the bone/implant can begin, using a knee-level short training prosthesis.

Everyday exercise is based on your imposing a load on the prosthesis on a standard set of scales. By gradually increasing the load, the strength of the bone will improve. About 12 weeks after the second operation at the earliest, training and walking can begin with a “long” prosthesis.

During the first few weeks, you will only be allowed to use the prosthesis for a few hours a day, indoors and supported by crutches. Confirmation that you may start to walk unaided or supported by one crutch or a cane will be given after the follow-up visit and X-ray, six months after the second operation.

The team at the Department for Prosthetics and Orthotics at Sahlgrenska University Hospital will provide the prostheses, as well as instructions for training. Everyday training continues at home.

Recovery and check-ups

If no complications occur, osseointegration will normally be satisfactory one year after the first operation takes place. Please note that, once treatment is completed, regular medical check-ups will still be performed at Sahlgrenska University Hospital. In addition to the check-ups, the Department of Prosthetics and Orthotics at Sahlgrenska University Hospital also examines the actual prosthesis. As with all types of surgical treatment, there is a risk of complications that may change the treatment or lead to a less satisfactory result.

Do you want more information? Please do not hesitate to contact us. Click here to contact us.



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