The estimates for risk of manipulation and adverse events are very imprecise and the estimate for the risk of adverse events does not distinguish between a clinical ly important increase and decrease in risk .
There was insufficient evidence to determine the effect of CPM on participants ' global assessment of treatment effectiveness .
CPM does not have clinical ly important effects on active knee flexion ROM , pain , function or quality of life to justify its routine use .
BACKGROUND Arthritis of the knee is a common problem causing pain and disability .
If severe , knee arthritis can be surgically managed with a total knee arthroplasty .
Rehabilitation following knee arthroplasty often includes continuous passive motion ( CPM ) .
CPM is applied by a machine that passively and repeatedly moves the knee through a specified range of motion ( ROM ) .
It is believed that CPM increases recovery of knee ROM and has other therapeutic benefits .
However , it is not clear whether CPM is effective .
OBJECTIVES To assess the benefits and harms of CPM and st and ard postoperative care versus similar postoperative care , with or without additional knee exercises , in people with knee arthroplasty .
This review is an up date of a 2003 and 2010 version of the same review .
Continuous passive motion after total knee arthroplasty. Analysis of cost and benefits.
The authors report the results of a prospect i ve study examining the benefits of daily continuous passive motion combined with physical therapy , compared with physical therapy alone , in 103 consecutive osteoarthritic patients undergoing primary total knee arthroplasty . The first 51 patients received continuous passive motion initiated in the recovery room and the next 52 patients did not receive continuous passive motion . Both groups underwent an identical physical therapy protocol starting on the first postoperative day . At discharge , there was a significant increase in active flexion in the continuous passive motion group . There were no significant differences regarding pain , wound healing , knee swelling , wound drainage , pulmonary embolism , or length of hospital stay between the 2 groups . At 2 years , there were no clinical differences in the motion or knee scores . Knee  manipulation was done for < 50 degrees flexion after the tenth postoperative day . There were 5 manipulations in the noncontinuous passive motion group and none in the continuous passive motion group . The entire costs associated with the 5 manipulations was $ 48,274 or $ 937 per patient not receiving continuous passive motion . The average daily inpatient rental of the machine was $ 60 per day . Continuous passive motion is efficacious in increasing short-term flexion and decreasing the need for knee manipulation without increasing costs
The estimates for risk of manipulation and adverse events are very imprecise and the estimate for the risk of adverse events does not distinguish between a clinical ly important increase and decrease in risk .
There was insufficient evidence to determine the effect of CPM on participants ' global assessment of treatment effectiveness .
CPM does not have clinical ly important effects on active knee flexion ROM , pain , function or quality of life to justify its routine use .
BACKGROUND Arthritis of the knee is a common problem causing pain and disability .
If severe , knee arthritis can be surgically managed with a total knee arthroplasty .
Rehabilitation following knee arthroplasty often includes continuous passive motion ( CPM ) .
CPM is applied by a machine that passively and repeatedly moves the knee through a specified range of motion ( ROM ) .
It is believed that CPM increases recovery of knee ROM and has other therapeutic benefits .
However , it is not clear whether CPM is effective .
OBJECTIVES To assess the benefits and harms of CPM and st and ard postoperative care versus similar postoperative care , with or without additional knee exercises , in people with knee arthroplasty .
This review is an up date of a 2003 and 2010 version of the same review .