Total knee arthroplasty patients using the in-home X10 machine fully recovered. No additional therapy required

Daisy Ference; Robert J Ference; Erin Rempher; D Carl Freeman

doi:10.1016/j.jor.2021.09.002

Total knee arthroplasty patients using the in-home X10 machine fully recovered. No additional therapy required

J Orthop. 2021 Sep 14:27:79-83. doi: 10.1016/j.jor.2021.09.002. eCollection 2021 Sep-Oct.

Authors

Daisy Ference¹, Robert J Ference², Erin Rempher³, D Carl Freeman⁴

Affiliations

¹ School of Medicine, Wayne State University, Detroit, MI, 48201, USA.
² Harper University Hospital, Detroit, MI, 48201, USA.
³ Halley Orthopedics, Southfield, MI, USA.
⁴ Department of Biological Science, Wayne State University, Detroit, MI, 48202, USA.

Abstract

Following total knee arthroplasties patients using the X10 increased their quadriceps strength 120% at 30 days post-surgery compared to their pre-surgical baseline. This contrasts sharply with contrast studies outpatient physical therapy that show patients suffer a 50-60% quadriceps strength deficit at 30 days post-surgery. For X10 patients, the average range of motion at 30 days was 124° and at discharge it was 128° (mean 43 days). The trial involved a single surgeon and two groups. Group one (21 patients) used only the X10 for pre-habilitation and rehabilitation, while group two (20 patients) used X10 alone for pre-habilitation and then utilized the X10 plus home care plus outpatient physical therapy for rehabilitation. Adding home care and outpatient physical therapy did not improve outcomes compared to patients who utilized X10 alone. Our results show no significant difference between the two groups. Indicating that the X10 by itself is adequate to completely rehabilitation patients from total knee arthroplasties. Finally, we compared our results to those of Calatayud et al.¹ who monitored two groups of patients, one group had only physical therapy for rehabilitation while the other group used physical therapy for both prehabilitation and rehabilitation. Our results were superior to Calatayud et al.¹ for extension, flexion, and quadriceps strength; for each of these measures the X10 treatment groups improved over time, while the Calatayud et al.¹ groups showed losses.

Keywords: Extension; Flexion; Quadriceps strength; Rehabilitation; Total knee arthroplasty; X10.