title: Is minimally invasive surgery-total knee arthroplasty truly less invasive than standard total knee arthroplasty? A quantitative evaluation.
abstract: With recent technical advancements, the number of operative manipulations in the knee joint by minimally invasive surgery-total knee arthroplasty (MIS-TKA) is now considered to be the same as that using standard TKA (S-TKA). The question still remains, however, if MIS-TKA improves recovery compared to S-TKA. We compared MIS-TKA and S-TKA patients' physical activity as measured by an accelerometer. Physical activity expressed as cumulative acceleration was significantly higher in the MIS-TKA than in the S-TKA group on postoperative days (POD1, 2, 3, 4, 5, 10, 11) (P < .05). The recovery time, defined as the number of days required to achieve cumulative acceleration of 80% of the preoperative level, was significantly shorter (P < .05) in the MIS-TKA (3.0 +/- 3.3 days) group than in the S-TKA (7.0 +/- 3.5 days) group. Minimally invasive surgery-total knee arthroplasty appears to allow an earlier recovery after the operation than S-TKA. Less invasion to muscle during the surgery appears to contribute to shorter convalescence.
authors.affiliation: Department of Orthopaedic Surgery, Hoshigaoka Koseinenkin Hospital, Hirakata City, Osaka, Japan.
authors.forename: Shigeyoshi
authors.initials: S
authors.lastname: Tsuji
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Tomita
authors.forename: Masakazu
authors.initials: M
authors.lastname: Fujii
authors.forename: Richard S
authors.initials: RS
authors.lastname: Laskin
authors.forename: Hideki
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Kazuomi
authors.initials: K
authors.lastname: Sugamoto
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods* / Q000534:rehabilitation; D005260:Female; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D018670:Monitoring, Ambulatory; D010149:Postoperative Pain / Q000188:drug therapy; D011182:Postoperative Care; D011183:Postoperative Complications; D020127:Recovery of Function; D016138:Walking