Waking up the healing potential of the bone:subtrochanteric non-union in femoral dysplasia successfully treated after 40 years of pain and disability.

We describe a successful valgus osteotomy for a subtrochanteric non-union in a dysplastic femur that had not healed in 40 years despite many earlier attempts. The optimisation of biology and biomechanics in the subtrochanteric area shows that even in a longstanding and complex deformity around the hip salvage is possible.