The proper technique, choice and quantity of pharmaceuticals, and appropriate follow-up are essential for effective outcomes. Forearm tenosynovitis: The tendons around your forearm (extensor carpi ulnaris, extensor, carpril radialis and extensor digitorum communis) can develop stenosing tenosynovitis, as well. Painful limitation of motion occurring in trigger fingers of patients with diabetes or rheumatoid arthritis also improves with injection. If complicated by pain or paresthesias, wrist ganglion cysts respond to aspiration and injection. Pain associated with de Quervain's tenosynovitis is treated effectively by therapeutic injection. 2 10 11 12 As the extensor pollicis longus crosses the wrist, the muscle belly transitions into a tendon (surrounded by a synovial tendon sheath), which forms the medial border of the anatomical snuffbox of the wrist. For the first carpometacarpal joint, injection may be used to treat pain secondary to osteoarthritis and rheumatoid arthritis. The compartments in order from radial to ulnar are: 1st compartment: abductor pollicis longus extensor pollicis brevis abductor pollicis longus extensor pollicis brevis 2nd compartment: extensor carpi radialis longus extensor carpi radialis brevis extensor carpi radialis longus extensor carpi. A group of muscles situated in the superficial posterior compartment of the forearm that produce movements of the forearm, hand and fingers. There are a total of six extensor compartments in the wrist. Indications for carpal tunnel syndrome injection include median nerve compression resulting from osteoarthritis, rheumatoid arthritis, diabetes mellitus, hypothyroidism, repetitive use injury, and other traumatic injuries to the area. In this article, the injection procedures for carpal tunnel syndrome, de Quervain's tenosynovitis, osteoarthritis of the first carpometacarpal joint, wrist ganglion cysts, and digital flexor tenosynovitis (trigger finger) are reviewed. Joint injection of the wrist and hand region is a useful diagnostic and therapeutic tool for the family physician.
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