Initial stability of a percutaneous osseointegrated endoprosthesis with proximal interlocking screws for transhumeral amputees.

ABSTRACT:

Background

Percutaneous osseointegrated devices for skeletal fixation of prosthetic limbs have the potential to improve clinical outcomes in the transhumeral amputee population. Initial endoprosthesis stability is paramount for long-term osseointegration and safe clinical introduction of this technology. We evaluated an endoprosthetic design featuring a distally porous coated titanium stem with proximal slots for placement of bicortical interlocking screws.

Methods

Yield load, ultimate failure load, and construct stiffness were measured in 18 pairs of fresh-frozen and thawed cadaver humeri, at distal and proximal amputation levels, without and with screws, under axial pull-out, torsion, and bending loads. Paired statistical comparisons were performed without screws at the tw

SUBMITTER: Drew AJ 

PROVIDER: S-EPMC7414792 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature