Anatomical variations of the abductor pollicis longus: a pilot study.
abductor pollicis longus
abductor pollicis longus tendon
anatomical variations
tendon graft
Journal
Folia morphologica
ISSN: 1644-3284
Titre abrégé: Folia Morphol (Warsz)
Pays: Poland
ID NLM: 0374620
Informations de publication
Date de publication:
2020
2020
Historique:
received:
12
10
2019
accepted:
03
11
2019
revised:
02
11
2019
pubmed:
6
12
2019
medline:
16
10
2021
entrez:
6
12
2019
Statut:
ppublish
Résumé
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. Fifty upper limbs (2 paired, 31 male, 19 female) were obtained from adult Caucasian cadavers, and fixed in 10% formalin solution before examination. 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 characterised by a single distal attachment, with the tendon inserting to the base of the I metacarpal bone. Type II was characterised 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 characterised by the main tendons inserting to the base of the first metacarpal bone, while the accessory band was characterised by mergers (fusion) with other tendons. This type was divided into two subtypes (a, b). The abductor pollicis longus is characterised by high morphological variability.
Sections du résumé
BACKGROUND
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.
MATERIALS AND METHODS
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
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 characterised by a single distal attachment, with the tendon inserting to the base of the I metacarpal bone. Type II was characterised 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 characterised by the main tendons inserting to the base of the first metacarpal bone, while the accessory band was characterised by mergers (fusion) with other tendons. This type was divided into two subtypes (a, b).
CONCLUSIONS
CONCLUSIONS
The abductor pollicis longus is characterised by high morphological variability.
Identifiants
pubmed: 31802470
pii: VM/OJS/J/66121
doi: 10.5603/FM.a2019.0134
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM