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Existing literature indicates that fractures of the first metacarpophalangeal joint (MCPJ) sesamoids are uncommon. However, it is our supposition that this injury may be under reported because it is not clinically suspected and because standard x rays (anteroposterior and lateral views) may not demonstrate the fracture.
The ulnar and radial sesamoids transmit the pull of the flexor pollicis brevis and adductor pollicis brevis to the proximal phalanx of the thumb. They are fractured …
Funding: We have not accepted any funds or reimbursement from any organisation which could in any way gain or lose financially from the conclusions of this letter. In particular we have not received reimbursement for attending a symposium, fees for speaking, fees for organising education, funds for research, funds for a member of staff, or fees for consulting from any such organisation.
Competing interests: None declared.