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The A2 and A4 pulleys arise from the periosteum on the proximal half of the proximal phalanx and the mid portion of the middle phalanx, respectively. [1] The first annular pulley (A1 pulley), near the head of the metacarpal bone, lies in the flexor groove in the deep transverse metacarpal ligament. [2]
Climber's finger is one of the most common climbing injuries within the sport of rock climbing, accounting for about 30% of finger injuries seen in climbers. [1] It is an overuse injury that usually manifests in a swollen middle or ring finger due to a damaged flexor tendon pulley, normally the A2 or A4 pulley.
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A study presented earlier this month found that smaller temporalis muscles could indicate dementia. A brain health coach shares the warning signs to look for.
The third-quarter pass secured the first Titans touchdown of the day. The Vikings blitzed five pass rushers on third-and-10. But Tennessee's offensive line stood its ground to buy Levis time as he ...
Layton Kor on the first ascent of Exhibit A Eldorado Canyon; the route was then graded 5.9 A4 (original A-grade), but is now graded 5.8 C2+ R (post "new-wave" C-grade). [ 21 ] The grade of an aid climbing route can change materially over time due to improvements in aid equipment but also due to the impact of repeated ascents that subsequent aid ...