title: Preoperative planning and intraoperative guidance for accurate computer-assisted minimally invasive hip resurfacing surgery.
abstract: Hip resurfacing is an alternative to total hip replacement (THR) and is particularly suitable for the younger, more active patient. However, it is a more demanding procedure. This paper describes a system that enables the surgeon to plan the surgery preoperatively with optimally sized and placed components, and then transfer this plan to an intraoperative system that registers computer models to the real patient and tracks surgical tools, allowing the surgeon to ensure that the bone is resected correctly and that the components are fitted in accordance with the plan. The paper describes a series of instruments used with the system which are locked to the bone. These instruments serve the dual purpose of soft tissue retraction and bone immobilization. The system will shortly be the subject of laboratory and clinical evaluation. Registration, a cornerstone of the tracked instrument system, has been tested, and accuracy measures are provided. Experimental results for the remainder of the system will be provided after clinical trials.
authors.affiliation: The Acrobot Company Limited, Unit 13.3.2, The Leathermarket, Weston Street, London SE1 3ER, UK. adrian.barrett@acrobot.co.uk
authors.forename: A R W
authors.initials: AR
authors.lastname: Barrett
authors.forename: B L
authors.initials: BL
authors.lastname: Davies
authors.forename: M P S F
authors.initials: MP
authors.lastname: Gomes
authors.forename: S J
authors.initials: SJ
authors.lastname: Harris
authors.forename: J
authors.initials: J
authors.lastname: Henckel
authors.forename: M
authors.initials: M
authors.lastname: Jakopec
authors.forename: F M
authors.initials: FM
authors.lastname: Rodriguez y Baena
authors.forename: J P
authors.initials: JP
authors.lastname: Cobb
mesh_terms: D001178:Arthroplasty / Q000379:methods*; D003198:Computer Simulation; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007430:Intraoperative Care / Q000379:methods; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D008954:Models, Biological; D011300:Preoperative Care; D011859:Radiography; D019651:Plastic Surgery Procedures / Q000379:methods*; D012371:Robotics / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*