Is back on trak useful for osteoartritis in my knee?

Back Traction?: I assume you may mean back traction. Although knee pain can be related to the joint, surrounding soft tissues like bursas and tendons, one can also have knee pain that is referred from other sites like the hip or from radiation from other sites liek the back which can pinch or nerves, facet joints or soft tissues that is felt in teh knee. Back traction might help this pain from the back.