A Report on Three Consecutive Cases using Computer Tomography 3D Preoperative Planning for Conversion of Arthrodesed Hips to Total Hip Replacements

HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery
Yutaka KurodaShuichi Matsuda

Abstract

Conversion of an arthrodesed hip to a total hip arthroplasty (THA) is a technically demanding procedure with high complication rates. One important issue is that determining the amount of correction for a leg length discrepancy (LLD) can be difficult at the planning stage. The aim of this study is to assess the reliable use of computer tomography (CT)-based three-dimensional (3D) preoperative planning for the conversion of arthrodesed hips to THAs. CT-based preoperative 3D planning was used to convert three arthrodesed hips to THAs. The efficacy of the planning was evaluated with postoperative radiographic measurements involving the amount of correction for LLD, position of components, difference between targeted and actual values, and ratio of the moment arms. The clinical assessment was performed with the Japanese Orthopaedic Association (JOA) hip score before and after THA. The mean amount of LLD correction and median LLD after THA were 16 mm (range, 15-17 mm) and 4 mm (range, 1-10 mm), respectively. The components were implanted close to the positions recommended by the preoperative simulation. The ratio of the moment arms indicated that the converted hips were reconstructed in a biomechanically correct manner. The implants...Continue Reading

References

Jul 1, 1984·The Journal of Bone and Joint Surgery. American Volume·P D SponsellerM Perpich
Aug 15, 2002·The Journal of Bone and Joint Surgery. American Volume·Atul B JoshiJohn C M Murphy
Oct 2, 2002·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Nobuhiko SuganoKunio Takaoka
Sep 11, 2007·The Journal of Arthroplasty·Elsayed Morsi
Mar 30, 2010·The Journal of Arthroplasty·Corey J Richards, Clive P Duncan
Dec 1, 2010·Clinical Orthopaedics and Related Research·Mariano Fernandez-FairenAntonio Murcia
Feb 5, 2013·Orthopaedics & Traumatology, Surgery & Research : OTSR·S BoisgardB Bouillet
Jan 16, 2014·HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery·Manuel VillanuevaJavier Vaquero

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Citations

Nov 23, 2019·EFORT Open Reviews·Alessandro ColombiClaudio Carlo Castelli

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Methods Mentioned

BETA
total hip arthroplasty
X-ray

Software Mentioned

Vector Vision Hip

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