Results 211 to 220 of about 391,185 (308)

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi   +5 more
wiley   +1 more source

Human evolution and the obstetrical dilemma: The pelvic floor hypothesis

open access: yesThe Anatomical Record, EarlyView.
Abstract Human childbirth is mechanically difficult because a large‐headed, broad‐shouldered fetus must pass through a comparatively narrow, twisted bony birth canal. Traditional explanations of this “obstetrical dilemma” emphasize the role of bipedal locomotion in inhibiting the evolution of a wider, more spacious pelvis.
Barbara Fischer, Ekaterina Stansfield
wiley   +1 more source

Local variation in age‐related cortical expansion within and between cross‐sections of distal human long bones

open access: yesThe Anatomical Record, EarlyView.
Abstract Cortical bone expansion is an age‐related process where, through endosteal resorption and periosteal apposition, cross‐sectional diameter increases while cortical thickness decreases in long bone diaphyses. Local variation has been observed in this process between cross‐sectional locations, but few studies have examined directional variation ...
Gregory J. Wehrman   +4 more
wiley   +1 more source

Editorial Commentary: Tobacco or Not—All Nicotine Products Negatively Impact Rotator Cuff Surgery

open access: yesArthroscopy, EarlyView.
Abstract Rotator cuff repair is one of the most common elective orthopaedic surgeries performed; however, failure rates have been reported to range from 10% to 94% depending on the tear characteristics and other patient risk factors. One of the most common risk factors for failure is tobacco use.
Justin J. Ernat
wiley   +1 more source

Editorial Commentary: Estrogen Influences Shoulder Health

open access: yesArthroscopy, EarlyView.
Abstract Estrogen influences bone mineral density, muscle quality and quantity, and collagen synthesis, rotator cuff tearing, worse outcomes after rotator cuff repair, hyperlaxity, and adhesive capsulitis. In this commentary, we discuss the potential explanations for the highly significant associations between hormonal systemic birth control and a ...
Peter Chalmers, Robert Tashjian
wiley   +1 more source

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