extensor indicis muscle


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ex·ten·sor in·di·cis mus·cle

(eks-ten'sŏr in'di-sis mŭs'ĕl)
Origin, dorsal surface of ulna; insertion, dorsal extensor aponeurosis of index finger; action, assists in extending the forefinger; nerve supply, radial.
Synonym(s): musculus extensor indicis [TA] , index extensor muscle.
References in periodicals archive ?
Nerve conduction study showed left ulnar compression mononeuropathy at the elbow of moderate severity as well as mild left-sided carpal tunnel syndrome with no evidence of left-sided C5-T1 radiculopathy Electromyography (EMG) showed no evidence of myopathy (including inflammatory myopathy) in the left deltoid, biceps, brachioradialis, extensor indicis muscle, extensor digitorum muscle, flexor digitorum profundus, adductor pollicis brevis, right deltoid, right rectus femoris, and iliopsoas muscle.
The extensor indicis muscle tendon was found on the ulnar side of the mass and was not ruptured (Figure 3).
A pair of electrodes for EMG detection and stimulation are placed on the affected extensor digitorum communis muscle, and one electrode for stimulation is placed on the affected extensor indicis muscle. (b) Participants wear a wrist-hand splint and carry a closed-loop EMG-controlled NMES with arm holder for 8 hours during the daytime.

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