title: Monitoring functional capability of individuals with lower limb amputations using mobile phones.
abstract: To be effective, a prescribed prosthetic device must match the functional requirements and capabilities of each patient. These capabilities are usually assessed by a clinician and reported by the Medicare K-level designation of mobility. However, it is not clear how the K-level designation objectively relates to the use of prostheses outside of a clinical environment. Here, we quantify participant activity using mobile phones and relate activity measured during real world activity to the assigned K-levels. We observe a correlation between K-level and the proportion of moderate to high activity over the course of a week. This relationship suggests that accelerometry-based technologies such as mobile phones can be used to evaluate real world activity for mobility assessment. Quantifying everyday activity promises to improve assessment of real world prosthesis use, leading to a better matching of prostheses to individuals and enabling better evaluations of future prosthetic devices.
authors.affiliation: Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, Illinois, USA. markvalbert@gmail.com
authors.forename: Mark V
authors.initials: MV
authors.lastname: Albert
authors.forename: Cliodhna
authors.initials: C
authors.lastname: McCarthy
authors.forename: Juliana
authors.initials: J
authors.lastname: Valentin
authors.forename: Megan
authors.initials: M
authors.lastname: Herrmann
authors.forename: Konrad
authors.initials: K
authors.lastname: Kording
authors.forename: Arun
authors.initials: A
authors.lastname: Jayaraman
mesh_terms: D061725:Accelerometry / Q000295:instrumentation*; D000671:Amputation, Surgical; D040421:Cell Phone; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000502:physiology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation*; D009068:Movement; D020127:Recovery of Function; D057566:Self Report