The results of both groups revealed that both modalities are
considered effective in treating problems related to hemarthrosis
in children with hemophilia. But, LLLT is more effective and
had a quicker response when compared to PEMF. Scientifically,
the obtained results can be relied on the fact that LLLT, when
applied to the body tissues, delivers energy at a level sufficient to
disturb local electron orbits and result in the generation of heat,
initiate chemical change, disrupt molecular bonds, and produce
free radicals. These are considered to be the primary mechanisms
by which LLLT achieves its physiological and therefore
its therapeutic effects, and the primary target is effectively the
cell membrane. There are a wide variety of physiological
and cellular level effects that have been shown to be the result of
laser treatment. Some include increased cellular metabolism,
stimulation of macrophages, stimulation of mast cell degranulation,
activation and proliferation of fibroblasts, and alteration of
cell membrane potentials.