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- W3203240789 abstract "Hip flexor musculature was instrumental in the evolution of hominin bipedal gait and in endurance running for hunting in the genus Homo. The iliacus and psoas major muscles were historically considered to have separate tendons with different insertions on the lesser trochanter. However, in the early 20th century, it became common knowledge that the two muscles insert together on the lesser trochanter as the iliopsoas tendon. We revisited the findings of early anatomists and tested the more recent paradigm of a common iliopsoas tendon based on dissections of hips and their associated musculature (n = 17). We rediscovered that the tendon of the psoas muscle inserts only into a crest running from the superior to anterior aspect of the lesser trochanter, separate from the iliacus. The iliacus inserts fleshly into the anterior portion of the lesser trochanter and into an inferior crest extending from it. We developed 3D multibody dynamics biomechanical models for: (a) the conjoint iliopsoas tendon hypothesis and (b) the separate insertion hypothesis. We show that the conjoint model underestimates the iliacus' capacity to generate hip flexion relative to the separate insertion model. Further work reevaluating the primate lower limb (including human) through dissection, needs to be performed to develop those datasets for reconstructing anatomy in fossil hominins using the extant phylogenetic bracket approach, which is frequently used for tetrapods clades outside of paleoanthropology." @default.
- W3203240789 created "2021-10-11" @default.
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- W3203240789 date "2021-11-01" @default.
- W3203240789 modified "2023-10-16" @default.
- W3203240789 title "Revision of hip flexor anatomy and function in modern humans, and implications for the evolution of hominin bipedalism" @default.
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- W3203240789 doi "https://doi.org/10.1002/ar.24769" @default.
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