Atrophy of paraspinal muscles is common in low back pain (LBP). Early studies report atrophy and abnormalities of the paraspinal muscles in 20% to 60% of people with chronic LBP.More recent data suggest a reduced cross-sectional area of multifidus at L4 and/or L5 in chronic LBP.ntroduction. Atrophy of paraspinal muscles is common in low back pain (LBP). Early studies report atrophy and abnormalities of the paraspinal muscles in 20% to 60% of people with chronic LBP. More recent data suggest a reduced cross-sectional area of multifidus at L4 and/or L5 in chronic LBP.
Hyenas usually bear litters of two to four cubs, which, unlike the other two species, are born with their eyes open. Cubs begin to eat meat from kills near the den at about 5 months, but they are suckled for as long as 12 to 18 months, an unusually long time for carnivores.
The hyena is a carnivorous dog-like species of animal, native to parts of both Africa and Asia. There are four known species of hyena, the spotted hyena, the striped hyena, the brown hyena and the aardwolf.he main of a spotted hyena is considerably shorter and appears to stand on end the majority of the time. Despite the hyenas once large range across Africa and parts of Asia and Europe, all four hyena species are today found mostly in the African Savannah.