Trauma/Injury:
Falls: A direct fall onto the buttocks (e.g., slipping on ice, falling downstairs) is the most common cause.
Childbirth: Pressure on the coccyx during delivery can lead to injury or inflammation.
Repetitive Strain: Activities like cycling or rowing that put prolonged pressure on the tailbone.
Poor Posture: Prolonged sitting with improper posture, especially on hard surfaces, can strain the coccyx.
Degenerative Changes: Less commonly, wear and tear or arthritis in the coccygeal joints.