Osseointegration and its application for Amputees

Implant Technology known as Osseointegration or OI is a relatively new technology regarding its application for Amputees that has the potential to drastically change the lives of Amputees forever. Today’s leading OI surgeon is Dr. Munjed Al Muderis (Read his Amazing Story) of Sydney, Australia. Dr Al Muderis works out of Maquarie University Hospital and Norwest Private Hospital where he has implemented a team approach to the Ossointegration process. The Osseointegration Group of Australia Team or OGAP (Video) is comprised of a number of industry professionals who are specialists in their respective fields. This allows the OI patient to be cared for under a strictly controlled protocol. Their work has lead to the creation of OI protocol that is now used industry wide. Each Team member plays an important role in the process, helping to insure a successful implant outcome. Until recently Dr. Al Muderis has utilized the ILP implant but he has now developed the next generation implant that addresses custom applications and issues he experienced with the ILP system. The new implant is the OPL Osseointegration Prosthetic Limb.

ogap-opl-prosthesis-work

The OGAP-OPL is made up of several components which can be divided into an inner (endo) module and an external (exo) module. The endo module, a titanium stem, is directly implanted into the bone.

The implant surface is highly porous titanium which allows initial stability and long term bone integration (ingrowth). This technology has been successful in clinical use around the world for more than 30 years in joint replacement surgery. The bio compatibility of the titanium implant allows the bone to grow inside the surface of the prosthesis which makes the bone- implant structure one solid unit. This is known as Osseointegration.

A dual adaptor connects the internal implant to the external prosthesis. This adaptor has a highly polished smooth surface to minimize soft tissue friction. It is also coated with a titanium niobium which has antibacterial properties. This passes through a small opening in the skin known as the stoma. Externally the adaptor is fixed to a torque control safety device which further connects to the prosthetic limb. Taking on and off the prosthesis is very easy and takes less than ten seconds. Due to the solid fixture to the bone it accurately connects in the exact spot each and every time you attach the prosthesis. This device can be used with all types of prosthetic components.

Titanium Implant Inserted into the Bone

Osseointegration regarding its application to amputees is basically a titanium implant that is surgically inserted into the bone, thus eliminating the need for traditional socket based technology. Since the prosthetic is anchored directly to bone, it has been shown to transmit sensory signals; so a certain level of feeling actually returns. The phenomenon is known by the terms Osseoperception or Proprioception. OI is completely life changing technology and means complete and total freedom from the limitations and complications commonly associated with the rigid socket based systems in use today. Currently there are six additional “Teams” who are conducting research in the field besides the OGAP Team. The Research Teams are based out of Germany (ILP), Sweden (OPRA), the Netherlands (Direct Fixation Implant), United Kingdom (ITAP) and two in the United States (Percutaneous Osseointegrated Prosthesis or POP) and a yet unnamed implant out of Las Vegas, Nevada that is headed up by Dr Ronald HIllock.

Osseointegration Technology Video Links

Explore the Video links page to see amputees who have had the procedure, as well as the surgery itself. This is truly amazing technology that is more than a little overdue! Take a look at the Implant Pioneers and the Osseointergration links pages. Explore the links as well as the articles, papers and opinions regarding the technology. If your willing to spend some time and do a little research; you will find that this breakthrough technology actually surfaced in the 1950’s, pioneered by Prof. Per-Ingvar Branemark of Sweden. Utilizing a titanium implant in rabbit bone, Prof. Branemark discovered that titanium actually fuses with bone without rejection. The two materials fuse so well that separation becomes virtually impossible and its use has become common in dental implants. Further research by his son Rickard Branemark and others, have advanced and applied his work so that amputees can finally live a life that was once only a dream.

I encourage you to spend some time exploring my site. You will find information relating to all versions of OI available today.