Study finds, Impact of Extended Trochanteric Osteotomy Befor
An extended trochanteric osteotomy (ETO) safely addresses femoral component removal during challenging revision THA. Researchers hypothesized that given the absence of clinical reports of outcome differences despite the wide use of both practices, no significant difference in the initial axial stability would exist between the two fixation techniques.

ETOs were performed and repaired using the reconstitution technique for the six right-sided femora and the scaffolding technique for the six left-sided femora. 195 mm-long, 3.5°-taper splined titanium monobloc stems were impacted into 6 matched pairs of human fresh cadaveric femora.

Three beaded cables were placed in a standardized fashion on each specimen, one for prophylaxis against osteotomy propagation during reaming/impaction and two to close the ETO. Stepwise axial loading was performed to 2600N or until failure, which was defined as subsidence more than 5mm or femoral/cable fracture.

Results:
--All specimens successfully resisted axial testing, with no stem in either ETO repair group subsiding more than 2mm.

--The mean subsidence for the reconstitution group was 0.9mm ± 0.4mm, compared to 1.2mm ± 0.5mm for the scaffolding group.

There was no difference between the reconstitution and scaffolding ETO repair procedures in this cadaveric model with adequate proximal bone stock, and both provided appropriate immediate axial stability in a simulated revision THA scenario under physiologic loads.

Source: https://www.sciencedirect.com/science/article/abs/pii/S088354032100629X?dgcid=rss_sd_all
Like
Comment
Share