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Throckmorton's sign
Also known as:
John Thomas' sign
Associated persons:
John Thomas
Tom Bentley Throckmorton
Description:
Also known as the John Thomas sign. Synonym: position of the penis in relation to unilateral disease. Throckmorton's sign is a slang term used jokingly by medical students and residents. A positive "Throckmorton" sign is when the patient's penis lies to or points to the side of the body wherein lies the abnormality on a plain X-ray of the Pelvis. For example, a broken right hip with a shadow of the penis pointing to the right has a positive "throckmorten". If there is no abnormality, a jovial Radiologist might tell the referring Physician; "He's Throckmorten to the right so you might want to check over there.?
We thank Kris Rowney, Mike Michaels, George Broughton and Roger Blauvelt for information submitted.
Bibliography:
* A. E. Baogaert:
Genital asymmetry in men. Human Reproduction, Oxford, 1997, 12: 68-72.
* R. H. Chang, F. K. Hsu, S. T. Chan, et al:
Scrotal asymmetry and handedness.
Journal of Anatomy, London, 1960, 94: 543-548.
* Merlin C. Thomas, Brett D. Lyons, Robert J. Walker:
John Thomas sign: common distraction or useful pointer?
Letter. The Medical Journal of Australia, Sydney, 1998, 169: 670