Recovery after partial knee replacement done through a smaller incision
Unicompartmental knee arthroplasty: functional recovery and radiographic results with a minimally invasive technique
In simple words
When arthritis affects only the inner part of the knee, a partial ('unicompartmental') knee replacement can be done instead of a full one. This study looked at recovery and implant position when it is done through a small, muscle-sparing incision.
What the study looked at
100 consecutive partial knee replacements for arthritis of the inner knee, in patients aged 46 to 79, done through a minimally invasive approach that spares the thigh muscle.
What it found
The average incision was about 7 cm, the hospital stay about 2 days and blood loss about 240 mL. At 3 months the knee bent 120° to 155° (about 139° on average); 80% bent beyond 130°, and 91% could sit cross-legged, kneel and get up from the floor easily. Implants were well positioned in more than 9 out of 10 knees.
Why it matters for patients
In carefully selected patients, a partial knee replacement through a small incision allows quick recovery and the deep bending needed for floor sitting and kneeling.
Authors: Mullaji AB, Sharma A, Marawar S · J Arthroplasty 2007;22(4 Suppl 1):7–11