Polydactyly
It is the presence of supernumerary fingers
Causes
- Congenital
- Familial
- Associated with VSD
- Laurence-Moon-Biedl syndrome
- Turner's syndrome.
It is the presence of webbed fingers. May occur in normal individuals or in those with, certain congenital abnormalities. It is seen in Poland's syndrome (absent unilateral pectoralis major muscle with TOF).
Arachnodactyly
It is the presence of Spider fingers. These are long and thin fingers.
Causes
- Marfan's syndrome
- Hypogonadism
- Hypopituitarism
- Homocystinuria
- Normal individuals.
Absence of one or more fingers may be congenital. Thumb may be absent in Fanconi's congenital aplastic anemia.
Sausage fingers
Thick and fleshy fingers seen in
- Acromegaly
- Myxoedema
- Psoriatic arthropathy.
