Results 71 to 80 of about 14,789 (211)

Hominid butchers and biting crocodiles in the African Plio-Pleistocene. [PDF]

, 2017
Zooarchaeologists have long relied on linear traces and pits found on the surfaces of ancient bones to infer ancient hominid behaviors such as slicing, chopping, and percussive actions during butchery of mammal carcasses.
El Zaatari, Sireen, Sahle, Yonatan, White, Tim D   +2 more
core   +1 more source

Hoffmann's two‐toed sloth II: Muscle architectural properties in the thoracic limb of Choloepus (Pilosa: Xenarthra)

Journal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and greater suspensory support than three‐toed sloths and have muscle architectural properties consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the shoulder and elbow joints, and grip on the support as indicated by their myology. Abstract Two‐toed sloths
C. S. Tucker, A. M. Mossor, K. B. Spainhower, J. A. Avey‐Arroyo, M. T. Butcher   +4 more
wiley   +1 more source

Frequency of arboreality is correlated with longer hand skeletons in Gorilla: Analysis of a new skeletal sample of Bwindi mountain gorillas

Journal of Anatomy, EarlyView.
Variation in arboreality across gorilla populations is associated with systematic differences in manual digital lengths. Using a new dataset of linear metrics from the Bwindi mountain gorillas, we quantify metacarpal and phalangeal lengths in eastern and western gorilla populations across all five rays. Consistent with quantified behavioral differences,
Elliot G. Greiner, Christopher B. Ruff, Charlotte King, Aventino Nkwasibwe, Thadee Muhire, Emmanuel Tibenda, Jason S. Massey, Juho‐Antti Junno, Rowan M. Sherwood, Jean Bosco Noheri, Fred Nizeyimana, Tierra Smiley Evans, Richard Muvunyi, Dennis Babaasa, Martha M. Robbins, Shannon C. McFarlin, Tracy L. Kivell   +16 more
wiley   +1 more source

Hoffmann's two‐toed sloth I: Complete myology in the thoracic limb of Choloepus (Pilosa: Xenarthra)

Journal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and prolonged suspensory support than three‐toed sloths and accordingly demonstrate myological traits consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the elbow joint, and grip on the support.
C. S. Tucker, A. M. Mossor, J. A. Avey‐Arroyo, M. T. Butcher   +3 more
wiley   +1 more source

Updating the forelimb anatomy of the domestic cat (Felis catus, Felidae) based on evolutionary inferences of its muscles and nerves I: Shoulder and brachium

Journal of Anatomy, EarlyView.
In this study, we provide a detailed description of the shoulder and brachium muscles and the brachial plexus of the domestic cat (Felis catus). We identified muscular variants (articularis humeri, coracobrachialis longus, biceps brachii caput breve), clarified the independence of the anconeus medialis muscle from the triceps brachii muscle, and ...
Juan Fernando Vélez García, Ismael Vélez Cabrera, Maria Angelica Miglino   +2 more
wiley   +1 more source

Inadequate proximal screw fixation increases risk of failure following plate fixation of diaphyseal humerus fractures

Journal of Orthopaedic Surgery and Research, 2023
Background Operative treatment of humeral shaft fractures (AO/OTA 12) is being performed more frequently. Accordingly, it is important to understand the complications associated with plate fixation.
Manisha R. Mistry, Jimmy Tat, Rafi Husain, Ujash Sheth, Robin R. Richards, Diane Nam   +5 more
doaj   +1 more source

Scratching beneath the surface: Quantification of muscle architecture and myosin heavy chain content in the forelimbs of black‐tailed prairie dogs (Cynomys, Rodentia)

Journal of Anatomy, EarlyView.
Black‐tailed prairie dogs are highly social ground squirrels that excavate communal burrow systems, most often in medium‐textured soils. Their forelimbs demonstrate morphofunctional trade‐offs for scratch‐digging and terrestrial ecology, including well‐developed and fast‐contracting proximal musculature with large mechanical advantage paired with ...
Luke A. Scheetz, Carter A. Burnett, Benjamin R. Kimble, David A. Eads, Michael T. Butcher   +4 more
wiley   +1 more source

Prognostic factors for radial nerve palsy associated with humeral shaft fracture

Formosan Journal of Surgery, 2017
Background: Radial nerve palsy (RNP) associated with humeral shaft fracture is a common injury pattern in trauma patients. The management of RNP associated with humeral fractures in high-energy trauma is controversial and poses a challenge to surgeons ...
Yen-Yi Hoa, Lee-Wei Chen, Kao-Chang Yang, Kuei Chang Hsu, Wen-Chung Liu, Cheng-Ta Lin   +5 more
doaj   +1 more source

Mechanical Characterization of Fourth Generation Composite Humerus [PDF]

, 2011
Mechanical data on upper extremity surrogate bones, supporting use as biomechanical tools, is limited. The objective of this study was to characterize the structural behaviour of the fourth-generation composite humerus under simulated physiologic bending,
Albert, Carolyne, Grover, Prateek, Harris, Gerald F, Wang, Mei   +3 more
core   +1 more source

Ultra Short Osteotomy With Mortise‐Tenon Diaphyseal Prosthesis Reconstruction for Forearm Metastases: A Retrospective Study

Orthopaedic Surgery, EarlyView.
A novel mortise‐tenon diaphyseal prosthesis enables ultra‐short osteotomy for forearm bone metastases, providing stable fixation with significant pain relief and functional recovery. This approach preserves bone stock and demonstrates excellent safety, with no implant failure, local recurrence, or major complications during mid‐ to long‐term follow‐up.
Yunxiu Chen, Tongfu Wang, Miaomiao Gao, Xiaoyi Wang, Chengke Li, Jingyu Zhang   +5 more
wiley   +1 more source