Which sequence lists the closure order of the P3, P2, P1, and distal cannon plates from earliest to latest?

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Multiple Choice

Which sequence lists the closure order of the P3, P2, P1, and distal cannon plates from earliest to latest?

Explanation:
Growth plate closure in the horse’s distal limb follows a specific maturation timetable. The coffin bone’s growth plate (P3) fuses first, then the proximal phalanx (P2) closes next, followed by the middle phalanx (P1), with the distal end of the cannon bone (the distal cannon) closing last. So the order from earliest to latest is P3, then P2, then P1, and finally the distal cannon. This pattern reflects how different growth centers ossify at different rates during development, which also helps explain age-related changes seen on radiographs and informs how to manage hoof and limb growth safely.

Growth plate closure in the horse’s distal limb follows a specific maturation timetable. The coffin bone’s growth plate (P3) fuses first, then the proximal phalanx (P2) closes next, followed by the middle phalanx (P1), with the distal end of the cannon bone (the distal cannon) closing last. So the order from earliest to latest is P3, then P2, then P1, and finally the distal cannon. This pattern reflects how different growth centers ossify at different rates during development, which also helps explain age-related changes seen on radiographs and informs how to manage hoof and limb growth safely.

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