Pronex

My left arm shaking a bit. Every now and then the lower back will jerk (making my legs contraction). It does not hurt and my back feels better after using the device. It is the mark Pronex. Spasms also occur now when I ice my back.

Your muscles and nerves are only responding to the stress of the application of traction. The spasms are more likely to normal - but you can ask your doctor for a muscle relaxant and anti-inflammatory drugs to aid and speed the healing process while using the traction device.