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Decreased rate of prosthesis adjustment
4%
65/1643
Less postoperative time to final prosthesis fitting
7%
108/1643
Decreased neuroma formation
3%
55/1643
Decreased rate of revision
70/1643
Less energy expenditure with ambulation
81%
1335/1643
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A through-knee disarticulation has been shown to have decreased energy expenditure with ambulation, improved limb proprioception, improved sitting capabilities, decreased hip joint flexion contracture incidence, and improved lever arm for mobilization. Knee disarticulation is also recommended in children to prevent overgrowth of the distal femur which may be seen in transfemoral amputations (if the physis remains open). No difference in prosthesis fitting has been shown between transfemoral amputation and through-knee disarticulation. The referenced paper by Pinzur et al is a excellent review of knee disarticulation, from technique to outcomes.
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