Improvement on task performance and satisfaction with the use of dynamic arm support MOMO series on five users with upper limb dysfunction: A case series

The dynamic arm support MOMO series by Reharo Corporation, Japan, is an upper limb orthosis that primarily supports the daily lives of people with impaired upper limb function. The MOMO series comprises two types: MOMO and MOMO Prime, which support horizontal movement and antigravity control of the upper limb, respectively. This case series describes occupational therapy interventions using the MOMO series and assistive devices tailored to the individual needs of five participants. Outcomes were assessed using the Canadian Occupational Performance Measure (COPM) and the System Usability Scale (SUS). In all cases, COPM performance and satisfaction scores improved, indicating enhanced ability to engage in meaningful activities such as eating, smartphone use, and leisure. On the SUS score, higher satisfaction was observed when participants could apply the device independently and achieve tasks immediately after introduction. In several cases, the use of the MOMO series contributed to functional recovery, allowing tasks to be continued without the device. These findings suggest that the MOMO series can enhance independence, satisfaction, and quality of life when introduced with appropriate occupational therapy support.