Durable and easy-to-use mobilization wedge that's specially designed for testing and mobilization of the spine and extremities. The molded groove on the Original Kaltenborn Concept Wedge relieves pressure on the spinous process, facilitating mobilization via the transverse process while mobilizing the spine. The bottom of the wedge can be used as a positioning tool for extremity mobilization. Improved wedge angle and size for more effective treatment. Durable, non-slip rubber construction is comfortable for the patient.