Minimally invasive total knee arthroplasty: surgical implications for recovery

J Knee Surg. 2013 Jun;26(3):195-201. doi: 10.1055/s-0032-1327449. Epub 2012 Nov 12.


Background: Despite growing interest in minimally invasive surgery (MIS) techniques for total knee arthroplasty (TKA), few randomized controlled trials have compared MIS and conventional TKA using a combination of functional performance, knee pain, knee range of motion (ROM), and surgical and radiographic outcomes.

Methods: A prospective, randomized investigation comparing early outcomes of TKA using conventional or MIS approaches (n = 44). Patients were assessed preoperatively, 48 hours, 4 and 12 weeks postoperatively by blinded evaluators. Outcome measures included timed-up-and-go, 100-ft walk, knee pain, passive knee ROM, Knee Society Score, blood loss, tourniquet time, hospital length of stay, surgical complications, and radiographic outcomes.

Results: No significant differences in functional performance, knee pain, knee ROM, surgical, or radiographic outcomes were observed between groups at 48 hours, 4 or 12 weeks postoperatively.

Conclusion: While surgical and radiographic outcomes were not compromised with MIS surgery, there were also no improvements in pain, ROM, or functional performance with MIS TKA.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Knee / methods*
  • Blood Loss, Surgical
  • Female
  • Humans
  • Knee Joint / diagnostic imaging
  • Knee Joint / physiopathology
  • Knee Joint / surgery
  • Male
  • Middle Aged
  • Minimally Invasive Surgical Procedures*
  • Pain Measurement
  • Postoperative Complications
  • Prospective Studies
  • Radiography
  • Range of Motion, Articular / physiology