Deformity
Varus / extension / external rotation
Options
Intertrochanteric
Base of Neck
Subcapital
Osteotomy
Valgus / flexion / internal rotation
Intertrochanteric / Southwick
Technique
- biplanar
- valgising / flexion / internal rotation
- removal anterolateral bone wedge below LT
Advantage
- no AVN / safest
- improves hip motion
Disadvantage
- worsens LLD
- difficult THR
Base of neck / Kramer
Technique
- closing wedge anterior and superior
Disadvantage
- risk AVN
- shortens neck further - worsens LLD
Intra-capsular / Subcapital
Types
Dunn
- trapezoid osteotomy
Fish
- cuneiform
Advantage
- anatomical correction
Disadvantage
- risk AVN