A new upper extremity sparing non-weight bearing orthosis.
OBJECTIVE
Axillary and forearm crutches are commonly utilized in the treatment of foot and ankle injuries. In order to decrease the energy expenditure during mobilization, to prevent upper extremity complications, and to let the upper extremity free for other usages, we designed a new orthosis. The study is conducted to compare walking energy parameters of this newly designed orthosis with the axillary and forearm crutches.


METHODS
10 healthy young male volunteers walked on treadmill with three different orthoses in randomized order. Oxygen expenditure, oxygen cost, rate of perceived exertion (Borg scale), and observer stability assessment were analyzed.


RESULTS
Concerning oxygen consumption, perceived exertion, and observer stability assessment, the new device was found superior to the other devices (P<0.05). The new orthosis was superior to forearm crutches concerning oxygen cost (P=0.027) but not significantly different from the axillary crutches (P=0.062).


CONCLUSIONS
Compared to frequently used orthoses, the developed device provides mobilization using less or similar amount of energy. Additionally it spares one upper extremity to be used for other activities.
Yilmaz
Cengiz
C
Mersin University Medical School, Department of Orthopaedics and Traumatology, Turkey. cyilmaz@doctor.com
Dal
Ugur
U
Erdoğan
A Taner
AT
Colak
Mehmet
M
D002153:Calorimetry, Indirect; D003446:Crutches; D004734:Energy Metabolism; D004867:Equipment Design; D006801:Humans; D009989:Orthotic Devices; D010101:Oxygen Consumption / Q000502:physiology; D016138:Walking / Q000502:physiology*