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Rev Rhum Mal Osteoartic. 1989 Jul-Sep;56(8-9):579-82.

[Psoriatic onycho-pachydermo-periostitis of the big toe. Anatomo-clinical study and physiopathogenic approach apropos of 4 cases].

[Article in French]

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  • 1Clinique de Rhumatologie, CHU Purpan, Toulouse.


The authors report 4 cases of rheumatoid psoriasis in which involvement of the great toe, associating psoriatic onychosis, thickening of the distal soft tissues and osteo-periostitis of the distal phalanx without lesions of the interphalangeal joint, is the result of a direct repercussion of the ungual lesion on the distal phalanx. This is explained by very close anatomic links between nail and distal phalanx. They advocate the term of psoriatic onycho-pachydermo-periostitis of the great toe or OP3GT, when referring to this radio-clinical syndrome highly evocative of rheumatoid psoriasis.

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