| ERF | Education and Research Foundation; external rotation in flexion; Eye Research Foundation |
|---|---|
| FABER | flexion in abduction and external rotation |
| FADIR | flexion in adduction and internal rotation |
| FER | flexion, extension, rotation; fractional esterification rate |
| FFC | fixed flexion contracture; fluorescence flow cytometry; free from chlorine |
| deformity | A permanent structural deviation from the normal shape or size, resulting in disfigurement; may be congenital or acquired. Synonym: deformation. (05 Mar 2000) |
|---|---|
| swan-neck deformity | Hyperextension of the proximal interphalangeal joint with flexion of the distal interphalangeal joint of the finger. (05 Mar 2000) |
| torsional deformity | In orthopedics, a deformity caused by rotation of a portion of an extremity with relationship to the long axis of the entire extremity. (05 Mar 2000) |
| equinus deformity | Plantar declination of the foot. (12 Dec 1998) |
| erlenmeyer flask deformity | <radiology> Abnormal modeling of metaphysis, osteopetrosis, chronic anaemia (e.g., SSD), Gaucher disease, Niemann-Pick disease, fibrous dysplasia, Pyle disease (metaphyseal dysplasia) (12 Dec 1998) |
| J-sella deformity | Pear-shaped or J-shaped deformity of sella turcica caused by increased pressure on growing sphenoid bone; noted in the mucopolysaccharide storage diseases. (05 Mar 2000) |
| keyhole deformity | Mucosal ectropion at the posterior edge of the anus following sphincterotomy at that location. (05 Mar 2000) |
| kirner deformity | <radiology> Familial incurving of 5th distal phalanx (12 Dec 1998) |
| lobster-claw deformity | See: ectrodactyly. (05 Mar 2000) |