The Component Timed-Up-and-Go test: the utility and psychometric properties of using a mobile application to determine prosthetic mobility in people with lower limb amputations

Abstract

The Component Timed-Up-and-Go is a reliable and valid clinical tool for detailed assessment of prosthetic mobility in people with non-vascular lower limb amputation. The iPad application provided a means to easily record data, contributing to clinical utility.

Variables that Influence Basic Prosthetic Mobility in People With Non‐Vascular Lower Limb Amputation

“…The cTUG was administered to assess basic prosthetic mobility . A standard 3‐meter TUG course was set up with three delineations marked on the floor to indicate where the individual component tasks would be recorded (Figure ).…”

“…For similar reasoning, we analyzed only the cStand , cTurn , and cSit components of the cTUG due to their more complex nature requiring advanced motor planning and control. Component TUG performance differs based on amputation level; therefore all analyses were stratified by whether the amputation was TT or TF to account for heterogeneity between amputation types. Altogether this yielded six primary regression analyses: one for each of three component times for each of two amputation types.…”

“…A modified version of the TUG test, the Component Timed‐Up‐and‐Go (cTUG) test, delineates the time to complete each subtask of the TUG test: sit‐to‐stand, linear gait, 180° turn, return linear gate, and stand‐to‐sit. The cTUG has been found valid and reliable for use in the assessment of basic prosthetic mobility . Determining which variables related to LLA contribute to basic prosthetic mobility, as measured by the cTUG, may provide relevant information to guide the rehabilitation of people with LLA.…”

Vestibular physical therapy improves turning not straight walking during the inertial sensor-instrumented Timed Up and Go test

“…The clinical TUG test measures time, not considering any change in kinematics during various transitions between components. To overcome this limitation, the component-TUG and its instrumented version using IMUs have been suggested and identified as having the ability to classify fallers among the elderly [11,12], amputee [13], and Parkinson's disease populations [17][18][19]. However, to the best of our knowledge, only one study has incorporated IMUs to examine the test-retest reliability of the instrumented TUG in patients with vestibular disorders and its association with fall risk [34].…”

“…The score from the TUG is simplistic and only considers duration of time and thus lacking an ability to critically evaluate turning performance. To address this limitation, investigators have developed the component-TUG test to individually analyze four unique mobility tasks of the TUG; sit-to-stand and stand-to-sit transitions, straight walking, and turning [11][12][13].…”