title: Leg length discrepancy, dislocation rate, and offset in total hip replacement using a short modular stem: navigation vs conventional freehand.
abstract: We present a match-paired study between computer-assisted and freehand techniques using a short modular femoral stem (Metha; B. Braun Aesculap, Tuttlingen, Germany) in total hip replacement (THR). Surgical time, clinical outcome, dislocation rate, limb length, and offset in 44 patients with ideal indication for this more conservative implant were assessed. Despite both longer surgical time and similar early outcomes, the results showed how computer-assisted techniques allow easier management of limb length discrepancy and offset restoring. We believe that navigated short modular stems are safe for less invasive THR.
authors.affiliation: Ist Orthopaedic Department, Centro Traumatologico ed Ortopedico Hospital I.C.P., Via Bignami 1, Milan, Italy.
authors.forename: Norberto
authors.initials: N
authors.lastname: Confalonieri
authors.forename: Alfonso
authors.initials: A
authors.lastname: Manzotti
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Montironi
authors.forename: Chris
authors.initials: C
authors.lastname: Pullen
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000295:instrumentation*; D005260:Female; D006617:Hip Dislocation / Q000175:diagnosis / Q000209:etiology*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000209:etiology*; D007870:Leg Length Inequality / Q000175:diagnosis / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome