The impact of minimally invasive surgical techniques on early range of motion after primary total knee arthroplasty

J Arthroplasty. 2008 Jan;23(1):10-8. doi: 10.1016/j.arth.2007.01.011.


A single surgeon performed 200 consecutive primary total knee arthroplasties using identical implants. One hundred of these were done using a traditional medial parapatellar arthrotomy. The other knees were done using a medial parapatellar approach combined with minimally invasive surgical techniques. Patients in the minimal incision group had shorter incision length, shorter length of stay, and less pain (P < .01). Moreover, those patients in the minimal incision group had less flexion contracture (P < .05) and better flexion (P < .05) in the first 12 weeks. Manipulation was necessary in 14% of the traditional group compared with 2% in the minimal incision group (P < .001). There was no significant difference in range of motion or functional outcome at 1 year after surgery. There was no significant difference in component position or complication rates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arthroplasty, Replacement, Knee / methods*
  • Arthroplasty, Replacement, Knee / rehabilitation
  • Female
  • Humans
  • Knee Joint / physiology
  • Knee Prosthesis
  • Length of Stay
  • Male
  • Middle Aged
  • Minimally Invasive Surgical Procedures
  • Osteotomy
  • Patella / surgery
  • Postoperative Period
  • Prosthesis Design
  • Range of Motion, Articular
  • Recovery of Function
  • Treatment Outcome