Modular Femoral Stem-Sleeve Junction Failure After Primary Total Hip Arthroplasty

Modular Femoral Sleeve and Stem Implant Provides Long-term Total Hip Survivorship

“…To date, five cases of catastrophic complications related to the S-ROM 1 modular stem-sleeve junction have been reported in the literature [10,11,14,15]. Dissociation of the modular stem-sleeve junction has been reported in three hips and fracture of the proximal stem-sleeve junction has been reported in two hips.…”

Fracture of a Modular Femoral Neck After Total Hip Arthroplasty

“…Case reports of dissociation of modular hip stem prosthesis have been published [13][14][15] , and there is one case of a patient who had dissociation of the Alpha II (Osteoimplant Technology, Hunt Valley, Maryland) fully porous-coated stem 16 . The difference between the Alpha II and the implant used in our patient is that the neck-stem junction is much deeper in the implant in the present report.…”

Stem-Sleeve Junction Failure of a Modular Femoral Hip System: a Retrieval Analysis

“…Patel et al reported three cases of S-ROM® hip system failure at the stem-sleeve junction [26]. No retrieval analysis was performed on the failed stem; however, they concluded that the failures were likely a result of fretting surface damage due to the micromotion at the stem-sleeve interface.…”

“…These mechanical failures occurred secondary to crevice corrosion, which created a microenvironment predisposing to fatigue fracture. While a few reports have been published documenting stem fracture within the stem-sleeve junctions [18,25,26], these reports lacked examination of patient-or implant-related factors that contributed to stem failure. In the present study, we report a case of an S-ROM® fracture (S-ROM®, DePuy Synthes, Warsaw, IN) within the modular sleeve in an adult female patient following a primary total hip arthroplasty.…”

“…Previous reports have expressed concerns of fretting and corrosion damage at modular interfaces [3,4,6,10,26,39,40]. Modular component dissociation can occur in well-fixed components with disengagement of the trunnion during closed reduction of dislocated modular prostheses and also with subsidence of the femoral stem [1,8,28,33,35,43].…”