Recruitment and group assignment: Participants will be recruited through one of Arm
Dynamics's six Centers of Excellence. Potentially eligible participants will be
identified by their care team and referred to a study team member to go over the details
of the patient's involvement and the study protocol. After informed consent and medical
clearance are completed, the study prosthetist and occupational therapist will meet with
the participant and identify functional goals for their prosthesis. The prosthetist will
then begin fabricating the prosthesis. A single prosthesis will be fabricated for use
with both control strategies. Switching between control methods will be done through the
Glide iPad application. Once fabrication is completed, a clinical team member will
configure the assigned control strategy with the subject to achieve maximum functional
efficiency.
Prosthesis delivery and occupational therapy (Day 0): After the consenting process and
group assignment, patients will return to the clinic to be fit with the prosthesis. Each
prosthetic system will include IBT's Glide system, remote electrodes, FlexCell batteries,
and prosthetic componentry chosen by the patient and their clinical team. The Glide
system also allows for Direct Control of the prosthesis without any hardware change, as
long as two of the remote electrodes are positioned according to Direct Control site
selection. The fitting process may take multiple visits to adjust the socket. The
participant will be given instructions on how to use their prosthesis and activate the
various functions of their initial device. Occupational therapy (OT) will be provided
over 2 days to the patient to help patients accomplish their desired activities of daily
living. At the conclusion of OT, participants will complete baseline assessments of the
CAPPFUL, tBBT, CAPROQ, FIT, DASH, and SAM measures.
Phase I DC prosthesis: Over the course of the next 5-, 6-, or 7-weeks, subjects will use
their DC prosthesis during their everyday lives. The Glide system is capable of recording
usage data during these at-home periods (regardless of which control system is active at
a given time). These measures include the Daily Mean Number of Movement Bouts (DMNMB).
Using a web portal submission, subjects will report the DMNMB and their Mean Prosthesis
Wear Duration (MPWD) for the previous week. At this time, subjects will also complete the
CAPROQ and FIT surveys. This data submission will occur weekly.
Phase I Midpoint: Subjects will return to the clinic where they will first complete
CAPPFUL, tBBT, CAPROQ, FIT, DASH, and SAM. Once completed, the subject will continue
Phase I.
Phase I DC prosthesis: Phase I procedures will be repeated (DC prosthesis).
Crossover checkpoint (Day 70, 84, or 98): Subjects will return to the clinic where they
will first complete CAPPFUL, tBBT, CAPROQ, FIT, DASH, and SAM. Once completed, they will
have their control strategy transitioned to Glide. They will then receive OT training and
complete the same measurements using their prosthesis with Glide control.
Phase II Glide prosthesis: Over the course of the next 7-, 6-, or 5-weeks, subjects will
use their Glide prosthesis during their everyday lives. Using the Glide system, subjects
will repeat the procedures outlined in Phase I.
Phase II Midpoint: Subjects will return to the clinic where they will first complete
CAPPFUL, tBBT, CAPROQ, FIT, DASH, and SAM. Once completed, the subject will continue
Phase II.
Phase II Glide prosthesis: Phase II procedures will be repeated (Glide prosthesis).
Endpoint evaluation (Day 168): Measurements from the crossover checkpoint will be made
with the Glide prosthesis only. The patient will be re-fit with their pre-study
prosthesis, and OT provided as necessary.