..Starting node ..Enlarged epiphysis of the proximal phalanx of the thumb (HP:0009667)
Term ID:
9667
Name:
Enlarged epiphysis of the proximal phalanx of the thumb
Synonym:
Enlarged end part of thumb innermost long bone
Definition:
Abnormally large size of the epiphysis located at the proximal end of the proximal phalanx of the thumb with respect to age-dependent norms. In contrast to the proximal phalanges of the digits 2-5, the proximal phalanx of the thumb is embryologically equivalent to the middle phalanges of the other digits, whereas the first metacarpal is embryologically of phalangeal origin and as such equivalent to the proximal phalanges of the other digits.