Displacement of a Cemented Femoral Stem During Attempted Closed Reduction of a Dislocated Total Hip Arthroplasty

Femoral Stem Displacement in a Patient Suffering Recurrent Dislocations After Hip Hemiarthroplasty: Case Report

“…Displacement of the femoral component during attempt to close reduction is an extremely rare event, which has sporadically been reported in the literature [4-9]. This is, to our knowledge, the first report of a stem displacement during reduction of a unipolar hemiarthroplasty.…”

“…In line with previous reports, displacement happened during forceful traction manoeuvre in the recumbent position. The Stimpson method has been suggested as a safer alternative [9], although it is quite hard to believe that an anatomical hinder as the one encountered in our case can be overcome with any closed reduction method.…”

“…This is, to our knowledge, the first report of a stem displacement during reduction of a unipolar hemiarthroplasty. Thus far, this complication was mainly observed during reduction of a dislocated THA [4-7, 9], and once in a bipolar hemiarthroplasty [8]. It is possible that the simplicity of the design, render unipolar HA less susceptible to this event.…”

“…This renders open surgery necessary, and choice of the appropriate procedure even more demanding. Dislocation of the stem was previously reported in five cases [4-8] where a highly polished femoral component was used, and in one case of a textured implant [9]. In the case of tapered polished stems, cementing a new prosthesis in the existing cement mantle or revision may be considered.…”

The role of nickel-titanium shape memory alloy embracing fixator in determination of the implantation angle of hip tumor prosthesis stem following tumor resection and the analysis of its efficacy ： a retrospective study

“…The main factors related to the joint stability after replacement include the accurate implantation angle of the prosthesis stem and the reconstruction of the soft tissue around the joint [29]. In order to remove tumor tissue as thoroughly as possible, the prosthetic replacement after tumor resection will cause more serious damage to the soft tissue around the joint than common joint replacement.…”