title: A meta-analysis of randomised controlled trials comparing the clinical and radiological outcomes following minimally invasive to conventional exposure for total knee arthroplasty.
abstract: Proponents of minimally invasive total knee arthroplasty (TKA) state accelerated patient recovery and increased patient satisfaction as advantages. However, retractors state a greater incidence of iatrogenic nerve injury, implant mal-positioning and increased rates of revision. This study compares the clinical and radiological outcomes of minimally invasive and conventional exposure TKA using a meta-analysis. A search of published and unpublished literature was performed. Eighteen studies including 1582 TKAs were reviewed: 822 minimally invasive versus 760 conventional exposure TKAs. The findings of this study suggest that whilst incision length was significantly smaller in MIS (p=0.001), and flexion range of motion was significantly greater following MIS (p=0.01), there was no statistically significant differences in all other clinical or radiological outcomes between MIS or conventional approach TKA surgery (p>0.05).
authors.affiliation: Faculty of Health, University of East Anglia, Norwich, NR4 7TJ, United Kingdom. toby.smith@uea.ac.uk
authors.forename: Toby O
authors.initials: TO
authors.lastname: Smith
authors.forename: Jonathan J
authors.initials: JJ
authors.lastname: King
authors.forename: Caroline B
authors.initials: CB
authors.lastname: Hing
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications; D011859:Radiography; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome