Revisiting the Morphological Variations in Lumbricals of Hand

M, Khizer Hussain Afroze; Sangeeta, M; K.L, None Varalakshmi

doi:10.21276/aanat.2020.6.1.10

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…5 Afroze et al conducted a case study on lumbricals where they found hypertrophy of 1st lumbricals in one cadaver out of total 74 dissected cadavers. 6 They also concluded variation in 2nd lumbrical in 2 cadavers. And split insertion in 3rd and 4th lumbricals.…”

Section: Discussionmentioning

confidence: 95%

An anomalous origin of 1st lumbrical: a case report

Barma

Ahlawat

2023

Int J Res Med Sci

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Hand is an organ of prehension. Human hand is an example of revolution in evolution. It is endowed with skilled movements. It consists of different group of muscles, ligaments, joints which are responsible for the fine movements of hand. It also contains neurovascular structures which are the terminal branches of median nerve, ulnar nerve and radial nerve. The terminal branches of ulnar and radial arteries provide the arterial supply. Here, we have reported the variant of lumbrical muscles. Lumbricals perform movements on metacarpophalangeal joints, proximal interphalangeal joints and distal interphalangeal joints. Lumbricals are spindle rich fibres. Variations in the structures present are immensely important for the orthopaedic surgeon, digital transposition surgery, cleft hand surgery etc. Anatomically, incursion of the lumbricals inside the carpal tunnel may lead to work related carpal tunnel syndrome.

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Section: Discussionmentioning

confidence: 95%

An anomalous origin of 1st lumbrical: a case report

Barma

Ahlawat

2023

Int J Res Med Sci

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An accessory muscle belly or an accessory muscle head? An unusual arrangement of muscles in the anterior compartment of the forearm

et al. 2023

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Purpose Knowledge of the unusual arrangement of the flexor pollicis longus (FPL) muscle is important as the variable tendon may be a rare cause of carpal tunnel syndrome. Methods During a routine dissection at the Department of Anatomy, an unusual formation of the FPL muscle was observed in a formalin embalmed Central European cadaver. Results This report presents a variation of the FPL muscle, where the muscle split and formed a separate accessory head inserting into the first lumbrical muscle. Moreover, a tendinous interconnection was present between the FPL muscle tendon and the tendon of the aberrant muscle head. Conclusion The cases described by previous literature, concerning the Linburg–Comstock variation or the accessory head of the first lumbrical muscle originating from the FPL muscle, are closest to the present case. Such variation has a clinical significance ranging from the functional limitation of the thumb and index finger movement to the potential median nerve compression.

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