An adjustable brace includes a first portion for supporting one surface of a patient and a plurality of adjustable portions that allow the internal cross section of the brace to be adjusted. When a limb is injured, a patient may have a swollen limb and the adjustable brace can be set to a large cross section. As the limb heals, the swelling decreases and the limb cross section also decreases due to atrophy. The adjustable couplings are adjusted to reduce the cross section to properly fit the limb of the patient and provide proper protection and support during the healing process.