What is the metatarsal break? What function does it serve and when does this function occur?
What will be an ideal response?
ANS:
The metatarsal break is the metatarsal phalangeal (MTP) hyperextension that occurs around an oblique axis as the heel lifts in weight-bearing. The obliquity of the combined axis for flexion-extension of the MTPs results in more symmetrical weight-bearing across the toes as they extend than would occur if the axis were a true coronal axis. Although the first toe still receives much more weight than the other toes, the first would receive far more of the weight if it were not for the obliquity of the MTP axis. A decrease in the normal obliquity found among individuals with different toe configurations may result in excessive stress on the second and first toes.
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