Shoulder brace for simple-pendulum motion
A shoulder brace can be fitted to a patient having an externally injured shoulder in the initial stage of treatment and which enables the patient to make motions in directions suitable for early rehabilitation exercises for the injured shoulder. The shoulder brace is fitted to the patient having the externally injured shoulder in a physiological reference position where the elbow joint of the patient is flexed by an angle of 90° in the frontward direction and the shoulder is internally rotated by an angle of 30°.
1. A shoulder brace for a simple-pendulum motion adapted to be fitted to a patient having an externally injured shoulder in a physiological reference position where an elbow joint of the patient is flexed by an angle of 90° and the externally injured shoulder is internally rotated by a shoulder internal-rotation angle of 30°, the shoulder brace comprising:
a first layer including a first shoulder attachment portion and a second shoulder attachment portion each configured to be attached to a respective shoulder of the patient, the first and second shoulder attachment portions each having a predetermined width and a length having an anterior end and a posterior end, the length arranged in an anterior-posterior direction, and a posterior-side linking portion extending in a mediolateral direction and linking the posterior ends of the first and second shoulder attachment portions; and
a second layer including a ringed sling having a predetermined width, the ringed sling including a shoulder portion disposed on the first shoulder attachment portion of the first layer, wherein the ringed sling is configured to run downward from an anterior end of the shoulder portion of the ringed sling to an ulnar side of a forearm adjacent to an elbow of the patient, configured to run from the ulnar side of the forearm across a lower-surface side of the forearm up to a radial side of the forearm, configured to run from the radial side of the forearm across an anterior side of an upper arm of the patient, and configured to run through an armpit of the patient up to a posterior end of the shoulder portion;
wherein the shoulder brace is configured to enable the patient to perform a simple-pendulum exercise in the anterior-posterior direction while retaining the forearm at the shoulder internal-rotation angle of the physiological reference position.
2. The shoulder brace for a simple-pendulum motion according to claim 1 , wherein the first layer is provided with first and second armpit band portions, each configured to link the anterior end and the posterior end of the first and second shoulder attachment portions, respectively.
3. The shoulder brace for a simple-pendulum motion according to claim 1 , wherein the first layer is provided with:
an armpit band portion linking, the anterior end and the posterior end of the second shoulder attachment portion of the first layer; and
an anterior-side linking portion extending in a mediolateral direction and linking respective anterior ends of the first and second shoulder attachment portions.
4. The shoulder brace for a simple-pendulum motion according to claim 1 , wherein the second layer includes a forearm trough configured to support the forearm, and the ringed sling runs across a lower-surface side of the forearm trough.
5. The shoulder brace for a simple-pendulum motion according to claim 4 , wherein the first layer is provided with first and second armpit band portions, each linking the anterior end and the posterior end of the first and second shoulder attachment portions, respectively.
6. The shoulder brace for a simple-pendulum motion according to claim 4 , wherein the first layer is provided with:
an armpit band portion linking the anterior end and the posterior end of the second shoulder attachment portion of the first layer; and
a anterior-side linking portion extending in a mediolateral direction and linking respective anterior ends of the first and second shoulder attachment portions.