title: A case of disassociation of a modular femoral neck trunion after total hip arthroplasty.
abstract: Modular femoral heads offer the advantages of increased intraoperative flexibility through the adjustment of leg length and offset, whereas a modular femoral neck can also allow independent adjustment of femoral anteversion. Despite the potential advantages of hip systems using increased modularity, these component designs also offer a greater number of junctions through which problems may occur. This case demonstrates the potential for dissociation of a Morse taper between a modular femoral neck and stem.
authors.affiliation: Department of Orthopaedic Surgery, Central Dupage Hospital, Winfield, Illinois, USA.
authors.forename: Scott M
authors.initials: SM
authors.lastname: Sporer
authors.forename: Craig
authors.initials: C
authors.lastname: DellaValle
authors.forename: Joshua
authors.initials: J
authors.lastname: Jacobs
authors.forename: Markus
authors.initials: M
authors.lastname: Wimmer
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D001696:Biomechanical Phenomena; D005270:Femur Head; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D013499:Surface Properties