Variations of the abductor pollicis longus tendon: an anatomic study

El-Beshbishy, Rana A.; Abdel-Hamid, Ghada A.

doi:10.5603/fm.2013.0027

Cited by 20 publications

(25 citation statements)

References 21 publications

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“…Different types of accessory band insertions have been described in the literature [2][3][4][5][6][7][8][9][10]13], and such great morphological variability is believed to have an embryological basis.…”

Section: Discussionmentioning

confidence: 99%

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Anatomical variations of the abductor pollicis longus: a pilot study

et al. 2020

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Background:The abductor pollicis longus (APL) originates from the lateral part of the dorsal surface of the body of the ulna below the insertion of the anconeus muscle, from the interosseous membrane, and from the middle third of the dorsal surface of the body of the radius. However, the number of its accessory bands and their insertion vary considerably.Material and methods: Fifty upper limbs (2 paired, 31 male, 19 female) were obtained from adult Caucasian cadavers, and fixed in 10 % formalin solution before examination Results: The APL muscle was present in all specimens. The muscles were divided into three main categories, with Type II and III being dived into subtypes. Type I was characterized by a single distal attachment, with the tendon inserting to the base of the I metacarpal bone. Type II was characterized by a bifurcated distal attachment, with the main tendon inserting to the base of the first metacarpal bone; this type was divided into three subtypes (A-C). Type III was characterized by the main tendons inserting to the base of the first metacarpal bone, while the accessory band was characterized by mergers (fusion) with other tendons. This type was divided into two subtypes (A-B). Conclusions:The abductor pollicis longus is characterized by high morphological variability.

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Section: Discussionmentioning

confidence: 99%

“…The APL demonstrates a high degree of variability with regard to the number of its accessory bands and their insertion [2][3][4][5][6][7][8][9][10]. The presence of multiple tendons originating from the APL is clinically relevant, as it can lead to the development of de Quervain's syndrome, which is caused by stenosing tenosynovitis.…”

Section: Introductionmentioning

confidence: 99%

Anatomical variations of the abductor pollicis longus: a pilot study

et al. 2020

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“…Different authors have studied the variation of APL tendon. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 39 40 41 42 43 44 45 46 47 48 49 But only few reports are available from the Indian subcontinent. 9 14 30 31 46 47 48 49 There seems to be an ethnical variation in the origin, insertion, and arrangement of these tendons.…”

Section: Discussionmentioning

confidence: 99%

“… 1 Multiple tendinous insertion of APL has been reported by many authors. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 The anatomical variation may remain asymptomatic or may present with painful conditions like de Quervain tenosynovitis (DQT). 2 5 6 19 The treatment of such condition in severe cases involves either an injection therapy or surgical decompression of the first extensor compartment.…”

Section: Introductionmentioning

confidence: 99%

Anatomical variation of abductor pollicis longus in Indian population

Tewari

Mishra

Trıpathy

2015

IJOO

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Background:Many authors have reported the anatomical variation of abductor pollicis longus (APL) around the wrist and its association with de Quervain tenosynovitis (DQT), first carpo-metacarpal arthritis, and trapezio-metacarpal subluxation. From Indian subcontinent, there is only one original article and a few case reports on the variability of APL tendon insertion.Materials and Methods:Fifty formaldehyde preserved cadaveric wrists were dissected to look for the anatomical variation of APL in the Indian population.Results:The APL was found with single tendon in 2, double in 31, triple in 8, and quadruple in 8 extremities. A maximum of 6 tendon-slips were found in one cadaveric wrist. In all hands, the APL had at least one attachment to first metacarpal bone and in 46 hands (92%), there was second insertion to the trapezium bone. Of all tendon-slips of APL (n = 126), 44% of tendons (68 tendons) were inserted into the base of the first metacarpal bone. This was followed by the insertion into the trapezium in 42% tendons (52 tendons).Conclusion:Bi-tendinous APL is commonly observed on the dorsal compartment of the wrist in Indian population and these tendon-slips are commonly attached to the first metacarpal base and trapezium. This variation must be understood by the Indian Orthopedic surgeons as the response to treatment of DQT and reason for first carpo-metacarpal arthritis can be dependent on this anatomical variation.

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“…They noted the apl to have 2-6 tendons of which the double tendon was found to be the most common i.e. In 40% of the cases [13]. Roy et al and tewari et al in their respective studies from the indian subcontinent also reported the bi-tendinous slips of apl as the most common pattern of apl arrangement on dorsum of the wrist [14,15].…”

Section: Methodsmentioning

confidence: 99%