Extracapsular base-of-neck osteotomy (see text). A, Determination of proximal osteotomy cut. B, Osteotomy cuts. C, Removal of bony wedge. D, Fixation with cannulated screws. (From Abraham E, Garst J, Barmada R: Treatment of moderate to severe slipped capital femoral epiphysis with extracapsular base-of-neck osteotomy, J Pediatr Orthop 13:294, 1993.) SEE TECHNIQUE 36.27.