The primary objective of this clinical trial is to determine if the Dynamic Socket and Sub-Ischial alternative interface designs improve socket comfort, residual limb health, increase function and be preferred over the standard of care Ischial Ramus Containment (IRC) interface for the military and veteran living with transfemoral limb loss.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
15
Ischial Ramus Containment (IRC) is the standard of care socket
Dynamic Socket Ischial Ramus Containment (IRC) is a comparator study socket
Sub-Ischial Interface (Sub-I) is a comparator study socket
University of South Florida
Tampa, Florida, United States
Skin Temperature
Continuous skin temperature measurement (Celsius) will be taken during treadmill walking at self-selected comfortable speed
Time frame: Accommodation with new prosthetic sockets is approximately 10 days
Perspiration
Perspiration will be measured by tare weight (grams) following treadmill walking.
Time frame: Accommodation with new prosthetic sockets is approximately 10 days
Vertical Interface Movement (Pistoning)
Pistoning will be defined as the numerical difference of interface to skeletal movement (cm) between simulated swing (lifting the prosthetic side) and stance (single support on the prosthetic side) as measured by coronal X-Ray.
Time frame: Accommodation with new prosthetic sockets is approximately 10 days
Balance and Stability
The gold standard test of standing balance is the sensory organization test (SOT) administered on the Neurocom Equitest platform. The SOT score is a unitless number. Subjects stand on a pair of platforms that record force data and tilt in the sagittal plane during 6 varying conditions that challenge the visual, vestibular and somatosensory systems. With compromised ability to use an ankle strategy for balance, a hip strategy is routinely adopted, therefore higher interface trim lines could adversely affect performance on this test.
Time frame: Accommodation with new prosthetic sockets is approximately 10 days
Comfort
The Socket Comfort Score (rated on an 11-point 0-10 scale) will be used to assess patients' comfort in the respective sockets.
Time frame: Accommodation with new prosthetic sockets is approximately 10 days
Preference
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Patients will be asked which socket they preferred.
Time frame: Accommodation with new prosthetic sockets is approximately 10 days