Overview Reviews Product Description Continuous Passive Motion (CPM) Devices - OptiFlex-K1 knee CPM - Classic Hand Control ONLY : OptiFlex-K1 Knee CPM has interchangeable hand controls for maximum versatility. Product Videos Custom Field Product Reviews Write a Review Write a Review × OptiFlex OptiFlex-K1 knee CPM - Classic Hand Control ONLY Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *