Flashcards in SCFE Deck (12):
RIsk factors for SCFE
- femoral retroversion
- prior radiation therapy to the femoral head
Zone of SCFE injury:
hypertrophic zone, weakness in the perichondral ring
where does the neck displace?
retroverts the epiphysis
associated endocrine disorders?
- renal osteodystrophy
stable (can bear weight)
unstable (can't bear weight... risk of osteonecrosis is ~50%)
Southwick's angle classification
mild <30 deg
moderate 30-50 deg
severe >50 deg
Grading a SCFE:
should you pin contralateral side?
- obese male
- endocrine disorder
slip in a child <10 years of age
compolications of SCFE
- AVN femoral head 5% (50% in high grade slips
- chondrolysis from the screw
- slip progression (1-2%)
Age related risk for contralateral slip?
Screw thread relationship to failure?
16mm threads have higher frequency of femoral neck failure compared with 32mm or fully threaded screws