JMIR Publications

ABSTRACT

Background:

Surgical procedures on the lower extremities often require the weight-bearing of an extremity on crutches as part of the rehabilitation process. Orthopaedic elective procedures allow learning of correct use in a controlled preoperative setting. The utilization of digital assistance systems can safely circumvent a shortage of skilled workers and any contact restrictions that may be necessary.

Objective:

In the scope of the development and implementation of a novel interactive virtual gait training assistant, the movements of 14 patients were detected by a depth sensor and evaluated in real time.

Methods:

By completing specific exercises while receiving live feedback, the gait on crutches had to be learned. Specific parameters (step length, synchronous movement, crutch angle and distance to the feet) were compared with a control group that learned the use of crutches by physiotherapists. At the end of the study the usability of the system and patient satisfaction were evaluated.

Results:

All patients who were trained by the novel interactive virtual gait training assistant were able to use crutches correctly. The intervention group showed significantly better values for crutch angle and crutch position. Both groups reported feeling confident in the use of crutches, being able to follow the instructions and enjoyed the training. Even though the majority prefer physical therapy over a purely digital approach, most participants enjoyed using the system and were interested in testing out other digital assistants. The usability was rated above average by the majority of patients.

Conclusions:

The use of the newly designed interactive virtual gait training assistant is a safe method to learn the use of crutches and is statistically superior to a physiotherapist. Even if patients prefer interaction with a physiotherapist over a purely digital approach, digital devices provide a safe and motivating opportunity to learn essential locomotor skills for rehabilitation.