Load training compliance after osseointegrated implant
This study looks at the transfemoral amputee’s ability to comply with the prescribed axial loading, to ensure proper recovery after osseointegation screw implantation.
Compliance was low. In the axial plane there was general underloading, whilst vectorially, overloading was seen. Using the vertical load to monitor actual loading had only marginal correspondence.
Transfemoral amputees who are supplied with conventional socket-suspended prostheses can experience some discomfort from the socket. This has lead to the introduction of ossoeintegration suspension. This article reports a great deal of success with the OPRA (osseointegrated prosthesis for the rehabilitation of amputees) and attributes this, in part, the the rehabilitation program.
The rehabilitation program incorporates both static and dynamic loading, the first phase of which is aimed at ensuring proper bone remodelling and healing. This relies on a very prescribed loading on the vertical axis.
The study looked at the individuals ability to follow the prescription and to apply the prescribed load in the correct position.
The result showed that axial compliance was low, with individuals underloading the limb. The combined vector forces where often overloaded, but most compliance was seen where the prescribed load was 30KG.
Want to read further into osseointegration? You can find an interesting article on the pros and cons here!
How would you improve the loading technique?
> From: Vertriest et al., Prosthet Orthot Int (2016) (Epub ahead of print). All rights reserved to . Click here for the Pubmed summary.