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(A) With varus morphotypes the SPS stem may not have a good medial fit on the medial cortex. (B) The average SPS shape fits in almost all patients who do not have major dysplasia. (C) In case of a valgus morphotype, the SPS stem may have a punctual contact medially at the upper portion of the neck with a risk of fracture. A-A is the cross section corresponding to the neck osteotomy plane.
