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This study developed the first conscious mouse model of repetitive mild traumatic brain injury using momentum exchange, avoiding confounds of anesthesia and skull fracture. Repetitive impacts induced lasting cerebrovascular dysfunction, reduced brain connectivity, white matter changes, and glial activation detectable 10 days post-injury, validating the model for studying rmTBI mechanisms.
This observational study compared characteristics of adults with persisting post-concussion symptoms (3-18 months post-injury) across two samples: 92 participants followed prospectively from an emergency department and 106 patients referred to outpatient rehabilitation. The clinical rehabilitation sample showed greater symptom severity, worse functional outcomes, and lower return-to-work rates, suggesting treatment-seeking patients represent a more severely affected subgroup.
Analysis of 160 beach soccer matches across five FIFA World Cups (2015-2024) identified 463 potential head injury situations, with incidence rates increasing 1.95-fold over the decade. The increase was primarily driven by contested plays involving upper-extremity-to-head contact, suggesting need for targeted prevention strategies.
A matched-pair experimental study examined whether subconcussive head injuries impact academic performance in adolescent boys (grades 7-12), comparing GPA changes in 45 injured students versus 45 controls. Results indicated that subconcussive head injuries sustained approximately 27 days before examinations produced measurable reductions in academic achievement.
A 71-year-old woman with an initially undiagnosed mild traumatic brain injury (mTBI) from a fall was retrospectively diagnosed 17 months later and subsequently found to have probable Lewy body dementia, with rapid neurological decline leading to death 33 months post-injury. The case highlights concerns about delayed mTBI diagnosis, inadequate provider training, medication overuse without proper diagnosis, and the need for multidisciplinary evaluation and equitable access to specialized concussion care, particularly in elderly populations.
