To identify the center of extensor indicis (EI) muscle through cadaver dissection and compare the accuracy of different techniques for needle electromyography (EMG) electrode insertion. Eighteen upper limbs of 10 adult cadavers were dissected.

Extensor Indicis Propius is a narrow elongated skeletal muscle situated in deep layer of posterior compartment of the forearm along with Supinator, Abductor Pollicis Longus, Extensor Pollicis Longus and Brevis.

Results: The overall accuracy of needle electrode placement for all resident participants was 68.8%. The mean accuracy of the 4 selected muscles was 50% by PGY-3 residents and 82.1% for PGY-4 residents (P = .01). EIP was the most commonly missed muscle, with correct placement performed by 20% of PGY-3 and 42.9% of PGY-4 residents.

2010年11月9日 · E1 (black): Extensor indicis proprius (EIP) muscle (about 2-3 finger widths proximal to the ulnar styloid process on dorsal forearm) E2 (red): Distally along the distal forearm Ground : Dorsum of forearm (between stimulation and pickup sites)

Electromyography (EMG) is a time-intensive, operator-dependent diagnostic procedure that requires extensive training for the operator to become proficient. It is also a required competency of physical medicine and rehabilitation (PM&R) residency training.

2020年5月20日 · In this study we used intramuscular EMG electrodes to target the compartments of the flexor digitorum profundus (FDP), flexor digitorum superficialis (FDS) and extensor digitorum (ED), as well as...

2018年1月30日 · The extensor indicis proprius (EIP) is a muscle of the forearm that originates from the posterior surface of the ulna and the adjacent interosseous membrane and attaches to the index finger. Many anatomical variations of this muscle have been reported in the literature.

2021年10月1日 · For the needle electromyography (EMG) exam to provide useful information, the needle electrode must be accurately placed in the intended muscle. The standard approach is to begin EMG needle placement with surface anatomical landmarks, and then once inserted the targeting may be further refined by audiovisual feedback from the EMG recording.

2021年12月4日 · The aim of this study is to illustrate the anatomical peculiarities of the EIPM, the ultrasound (US) anatomy of the inferoposterior part of the forearm, and the technique of US-guided electromyography (EMG) of the EIPM.

2024年2月15日 · Ultrafast ultrasound is a promising alternative to iEMG, where decomposition of velocity images is used to single out individual motor units; a technique which directly...