Cecal bascule presenting as internal hernia.

Cecal bascule, a rare subtype of cecal volvulus, presents diagnostic and management challenges. We report a case of cecal bascule presenting as an internal hernia in a 68-year-old male with no surgical history. Computed tomography revealed two areas of mesenteric swirling and a displaced cecum. Prompt surgical intervention included laparoscopic exploration, resection of a necrotic adhesive band, and cecopexy. This case is noteworthy because of the absence of predisposing factors like prior surgeries or inflammatory conditions. Management options for cecal bascule include resection and cecopexy, tailored to individual patient factors. Awareness among healthcare providers is crucial for the timely recognition and appropriate management of such cases. Further research is needed to refine management strategies and improve outcomes for these rare but potentially life-threatening conditions.

Comparative kinetics of humans and non-human primates during vertical climbing.

Climbing represents a critical behavior in the context of primate evolution. However, anatomically modern human populations are considered ill-suited for climbing. This adaptation can be attributed to the evolution of striding bipedalism, redirecting anatomical traits away from efficient climbing. Although prior studies have speculated on the kinetic consequences of this anatomical reorganization, there is a lack of data on the force profiles of human climbers. This study utilized high-speed videography and force plate analysis to assess single limb forces during climbing from 44 human participants of varying climbing experience and compared these data with climbing data from eight species of non-human primates (anthropoids and strepsirrhines). Contrary to expectations, experience level had no significant effect on the magnitude of single limb forces in humans. Experienced climbers did, however, demonstrate a predictable relationship between center of mass position and peak normal forces, suggesting a better ability to modulate forces during climbing. Humans exhibited significantly higher peak propulsive forces in the hindlimb compared with the forelimb and greater hindlimb dominance overall compared with non-human primates. All species sampled demonstrated exclusively tensile forelimbs and predominantly compressive hindlimbs. Strepsirrhines exhibited a pull-push transition in normal forces, while anthropoid primates, including humans, did not. Climbing force profiles are remarkably stereotyped across humans, reflecting the universal mechanical demands of this form of locomotion. Extreme functional differentiation between forelimbs and hindlimbs in humans may help to explain the evolution of bipedalism in ancestrally climbing hominoids.