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Mobility need or deficit of the patient
| Evidence for benefits of the C-Leg vs. NMPK
|
| Safety |
Patient stumbles and/or falls repeatedly
Patient avoids activities due to fear of falling
Patient sustained fall-related injuries
|
Significant reduction in falls of up to 80%
(Hafner et al., 2007 and 2009; Highsmith et al., 2010; Kahle et al., 2008; Kannenberg et al., 2014, Kaufman et al., 2018)
Significant reduction in stumbles of up to 57%
(Hafner et al., 2009; Highsmith et al., 2010; Kahle et al., 2008; Kannenberg et al., 2014)
Significant improvements in balance and indicators for the risk of falling, such as Timed-up-and-go-test, forced gait perturbations in the gait lab, ABC scale, etc.
(Blumentritt et al., 2009; Burnfield et al., 2012; Hafner et al., 2007 and 2009; Kannenberg et al., 2014; Kaufman et al., 2007; Lansade et al., 2018)
|
| Mobility |
Patient has difficulty negotiating slopes/hills |
Significant improvement in quality of slope/hill descent towards natural, reciprocal (step-over-step) gait pattern
(Hafner et al.; 2007 and 2009; Highsmith et al., 2013; Kannenberg et al., 2014)
Significant increase in downhill walking speed of up to 40%
(Burnfield et al., 2012; Hafner et al., 2007 and 2009; Highsmith et al, 2013; Kannenberg et al., 2014)
|
| Mobility |
Patient has difficulty negotiating uneven terrain and obstacles |
Significant increase in walking speed on uneven terrain and obstacle courses of up to 21%
(Kahle et al., 2008; Seymour et al., 2007)
|
| Mobility |
Patient has difficulty descending stairs with reciprocal (step-over-step) gait |
Significant improvement in quality of stair descent towards natural, reciprocal (step-over-step) gait pattern
(Hafner et al., 2007 and 2009; Kahle et al., 2008; Kannenberg et al., 2014; Schmalz et al., 2007)
|
| Mobility |
Patient has difficulty with dual tasking while walking with the prosthesis |
Significant reduction in cognitive demand while walking with the prosthesis
(Hafner et al., 2007 and 2009; Seymour et al., 2007; Williams et al., 2006)
Significantly reduction in cortical brain activity and perfusion during dual-tasking
(Möller et al., 2019; Ramstrand et al, 2020)
Significantly improved capacity and performance in executing a concurrent task while walking with the prosthesis
(Hafner et al., 2007 and 2009; Morgan et al., 2015; Seymour et al., 2007; Williams et al., 2006)
|
| Mobility |
Patient is limited in his/her mobility |
About 50% of K2 patients are able to improve their overall mobility level to K3
(Hafner et al. 2009; Kahle et al., 2008; Kannenberg et al., 2014)
|
| Musculo-skeletal pain |
Patient suffers from joint and back pain due to gait asymmetry and excessive loading |
Significant improvement in gait symmetry and, thus, loading of the locomotor system
(Kaufman et al, 2007 and 2012; Segal 2006)
Significant stance knee flexion that results in shock absorption to unload proximal joints and the spine
(Kaufman et al., 2007; Segal et al., 2006)
|