Please use this identifier to cite or link to this item: http://hdl.handle.net/11434/984
Title: Computer assisted alignment of opening wedge high tibial osteotomy provides limited improvement of radiographic outcomes compared to flouroscopic alignment.
Epworth Authors: Stanley, Jeremy
Robinson, Kerian
Richmond, Anneka
Feller, Julian
Devitt, Brian
Whitehead, Timothy
Other Authors: Webster, Kate
Keywords: Varus Alignment
Varus Deformity
Medial Opening Wedge
Limb Alignment
High Tibial Osteotomy
Computer Navigation
Radiographs
Fluoroscopic Group
Intraoperative Computer Navigation
Fluoroscopic Techniques
Knee Alignment
Medial Opening Wedge High Tibial Osteotomy
MOWHTO
Orthopaedic Outcomes
OrthoSport Victoria Research Unit, Epworth Hospital, Richmond, Victoria 3121, Australia.
Musculoskeletal Clinical Institute, Epworth HealthCare, Victoria, Australia
Issue Date: Mar-2016
Publisher: Elsevier
Citation: 2016 Mar;23(2):289-94.
Abstract: INTRODUCTION: There are numerous methods available to assist surgeons in the accurate correction of varus alignment during medial opening wedge high tibial osteotomy (MOWHTO). Preoperative planning performed with radiographs or more recently intraoperative computer navigation software has been used. The aim of the study was to compare the accuracy of computer navigated versus non-navigated techniques to correct varus alignment of the knee. METHOD: The preoperative and postoperative radiographs of 117 knees that underwent MOWHTO were investigated to assess radiographic limb alignment 12-months postoperatively. The desired correction was defined as a weight bearing line (Mikulicz point {MP}) 58% of the width of the tibial plateau from the medial tibial margin. Sixty-five knees were corrected using a conventional technique and 52 knees were corrected using computer navigation. RESULTS: The mean MP percentage was 59% in the navigated group, compared with 56% in the fluoroscopic group (p=0.183). 51.9% of the navigation knees were corrected to within five percent of the desired correction, in contrast to 38.5% of the fluoroscopically corrected knees (p=0.15). 71.2% of the navigated knees were corrected to within 10% of the desired correction, compared with 63.1% of the fluoroscopically corrected knees (p=0.36). Large preoperative deformities were more accurately corrected with navigation assistance (57% vs 49%, p=0.049). CONCLUSION: No statistically significant difference was found in the radiographic correction of varus alignment twelve months postoperatively between navigated and fluoroscopic techniques of MOWHTO. However, a subgroup analysis demonstrated that larger preoperative varus deformities may be more accurately corrected using computer navigation.
URI: http://hdl.handle.net/11434/984
DOI: 10.1016/j.knee.2015.12.006
PubMed URL: https://www.ncbi.nlm.nih.gov/pubmed/26794921
ISSN: 0968-0160
Journal Title: The Knee
Type: Journal Article
Affiliated Organisations: School of Allied Health, College of Science, Health and Engineering La Trobe University, Bundoora, Victoria 3086, Australia
OrthoSport Victoria Research Unit, Epworth Hospital, Level 5, 89 Bridge Road, Richmond, Victoria 3121, Australia
Type of Clinical Study or Trial: Cohort Study
Appears in Collections:Diagnostic Services

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