scholarly journals Large pelvic tubercle in orangutans relates to the adductor longus muscle

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7273 ◽  
Author(s):  
Brian M. Shearer ◽  
Magdalena Muchlinski ◽  
Ashley S. Hammond

Orangutan pelves commonly exhibit a large, projecting tubercle in the iliopubic region, historically assumed to homologous to the pubic tubercle in humans. However, it is not clear whether this tubercle is a unique feature of Pongo, or if it is anatomically homologous with the human pubic tubercle when considered as a soft tissue attachment point. To clarify this issue, we dissected orangutan and other ape cadaveric specimens to evaluate the pelvic brim soft tissues and how they may relate to the tubercle (when present). We additionally conducted a broad osteological survey of pelvic brim morphology across 28 primate genera (n = 294 specimens) to document the presence of the tubercle in primate pelves. Cadaveric dissections revealed that the tubercle is exclusively associated with the proximal attachment of the adductor longus muscle tendon in orangutans. Our osteological survey confirms that the tubercle is both constantly present and very prominent in orangutans. We observed that the tubercle is consistently situated along the pectineal line, lateral to where the pubic tubercle in humans is found, thereby making its structural homology unlikely. The osteological survey documented the tubercle at polymorphic frequencies in all hominoid taxa, though generally less protuberant than observed in Pongo. We argue that this further excludes its possibility of homology with the pubic tubercle, and that it may therefore be more appropriately be considered an adductor longus tubercle. We discuss possible functional and phylogenetic implications for this feature.

1981 ◽  
Vol &NA; (160) ◽  
pp. 268???278 ◽  
Author(s):  
JAMES ARAGONA ◽  
JOHN R. PARSONS ◽  
HAROLD ALEXANDER ◽  
ANDREW B. WEISS

2020 ◽  
Vol 13 (3) ◽  
pp. e233504
Author(s):  
Gijs Herman Joseph de Smet ◽  
Steven E Buijk ◽  
Adam Weir

A football player was diagnosed with myositis ossificans of his right adductor longus muscle after an acute injury. Conservative treatment failed and 1 year after the initial trauma the patient underwent surgical excision of a large ossification. Seven months postoperatively, the patient was fully recovered and returned to his preinjury activity levels. We present our approach to this case and discuss our considerations, referring to background information about this rare disease.


2021 ◽  
Vol 56 ◽  
pp. 102493
Author(s):  
Takuya Kato ◽  
Keigo Taniguchi ◽  
Daisuke Kikukawa ◽  
Taiki Kodesho ◽  
Masaki Katayose

Hand Surgery ◽  
2015 ◽  
Vol 20 (02) ◽  
pp. 313-315
Author(s):  
PKY Goon ◽  
KR Vaghela ◽  
AJ Chojnowski

We present an unusual case of a closed perilunate dorsal-dislocation of the carpus, with an associated scaphoid fracture. In this extreme case, the proximal scaphoid pole was extruded volarly and proximally. After closed manipulation, the proximal pole of the scaphoid was further dislocated dorsally, a phenomenon not previously described in the literature. At open reduction this fragment was noted to have no soft tissue attachment but after reduction, distal radius bone graft and compression screw fixation the scaphoid went on to unite with a good functional result. This case highlights a rare but serious injury to the wrist with an unusual dislocation pattern not previously described. It demonstrates that early surgical intervention to fix such fractures with an avascular fragment can still achieve fracture union, despite the severity.


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