Since antiquity humans have fashioned support devices to hold themselves up when they became sick or injured. Evidence of such devices dates to 2830 B.C. A carving on the entrance of an Egyptian tomb depicts a figure leaning on a crutchlike staff.
Crutch design has evolved from the basic "T" used by Tiny Tim in A Christmas Carol, to aluminum braces with ice-gripping tips or energy-storing tips that function as shock absorbers—kind of like Air Jordans for the injured.
For lower-limb injuries, crutches remain useful today to decrease discomfort, reduce recovery time, and assist walking.
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