Are Computer-Controlled, Pressure Modulated KneeRehabilitation Machines Valuable Following KneeArthroplasty?

Constant passive motion (CPM) machines have been used for decades. Initially, CPMs were supposed to accelerate rehabilitation, including range of motion (ROM) and function following total knee arthroplasty (TKA). However, numerous studies show the CPM lacks efficacy following TKAs [1-5]. Here, we document a new computerized pressure modulated knee rehabilitation (PMKR) device, an FDA Class 1 medical device, (the X10TM, Halley Orthopedics, Franklin, MI, United States of America) [Figure 1,2] that utilizes pressure to increase RoM and strength of patient’s affected knees. The device is set up to range the patient’s knee through an arc using a pressure the patient finds comfortable. The patient controls the machine and only the patient can authorize an increase in the arc or pressure. As patients increase their RoM, within each 30 minute session, they routinely increase both arc and the pressure. Figure 1: Patient using the in-home X10 knee rehabilitation machine. *Corresponding author : Paul J Roubal, Physical Therapy Specialists, Troy, MI, USA. Received Date: December 11, 2018 Published Date: December 20, 2018 ISSN: 2687-816X DOI: 10.33552/GJOR.2018.01.000510