person met with an accident in which two long bones of the hand were dislocated. What could be (1)
the reason?
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The two long bones in hand are the radius and the ulna. Annular ligament or orbicular ligament is a strong band of fibres present on the head of the radius that retains it in contact with the radial notch of the ulna. The person must have broken the ligament which dislocated these long bones leading to fracture.
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Answer:
The main reason of dislocation of bones is sudden extensive force ( pressure ) on that body part which causes damage in surrounding ligaments, nerves, tendons and muscles.
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