title: The impact of subsidence on straight and curved modular cementless revision stems in hip revision surgery.
abstract: Subsidence is one of the potential complications in femoral stem revision total hip arthroplasty surgery, and can affect stability and osseointegration. A retrospective study was conducted on the outcomes at one year and 5 years (specifically subsidence and clinical relevance) of 40 consecutive femoral total hip arthroplasty revisions, comparing two modular cementless revision stems, Straight vs. Curved, with 20 patients in each group. No mechanical failure was observed, and there was an improvement in functional outcomes. Mean radiological subsidence was 9.9±4.9mm (straight=10.75mm vs. curved=9.03mm), with no statistically significant difference between groups (p=0,076). Fourteen patients (35%) had ≥10mm of subsidence, up to a maximum of 22mm. The subsidence found in this study is similar to published series, with no short-term clinical manifestations, or an increased number of complications or stem loosening in either the Straight or Curved group. No differences in subsidence were observed at one year and 5 years after surgery between the 2 types of stems.
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España. Electronic address: annafra88@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Fraile Suari
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: S
authors.initials: S
authors.lastname: Gil González
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: D
authors.initials: D
authors.lastname: Pérez Prieto
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: A
authors.initials: A
authors.lastname: León García
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: C
authors.initials: C
authors.lastname: Mestre Cortadellas
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: M
authors.initials: M
authors.lastname: Tey Pons
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital del Mar y l'Esperança, Barcelona, España.
authors.forename: F
authors.initials: F
authors.lastname: Marqués López
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011475:Prosthesis Failure / Q000209:etiology*; D012086:Reoperation / Q000295:instrumentation* / Q000379:methods; D012189:Retrospective Studies
keywords: Curved modular stems; Hundimiento protésico; Prosthetic subsidence; Straight modular stems; Vástagos curvos modulares; Vástagos rectos modulares