The Functional Shoulder Orthosis is very useful for stroke patients to prevent shoulder subluxation, which is made of modular parts, which interact with each other.
A stainless steel ball-and-socket joint is externally interposed between the chest and arm and is attached to sturdy foundation of pelvic and thoracic bands. A grooved steel rod is similar like humeral shaft in man. The ball is giving the humeral rod a range of motion comparable to that of the humerus. The ball can also be locked in any position with the desired degree of flexion, abduction or extension.
A pair of cuffs, humeral and forearm, attach to the limb above and below the elbow, respectively. Cuffs are connected by medial and lateral hinged bars forming an orthotic elbow joint. Orthotic elbow joint is giving full or partial range of motion or stability at any desired angle. An aluminum block is attached to the humeral cuff moves vertically and also rotates around it, completing the assembly of the FSO.
When the elbow joint of the orthosis is prevented from extending beyond 150° by a stop lock, and the block is selectively elevated on the rod and fixed by a locking bolt in one of its grooves, a constant pressure is exerted against the upper ulna by the forearm cuff. This pressure, transferred axially to the humerus, repositions the humeral head into the glenoid fossa. The locking bolt, when further tightened in the selected groove, will stabilize the arm at any desired degree of abduction
The orthosis is completely modular in design, is available in different sizes, and its fit and assembly by the orthotist are simple and minimally time consuming.
No comments:
Post a Comment