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Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Fig. 4 | Journal of Orthopaedics and Traumatology

Fig. 4

From: Retrograde entry portal for femoral interlocking nailing in femoral nonunion after plate failure: a prospective comparative study with antergrade portal

Fig. 4

Two examples of eccentric portal of entry in antegrade cases: a varus angulation at nonunion site due to too lateral portal of entry into the greater trochanter. b Valgus angulation at nonunion site due to too medial portal of entry. While c, the proper portal of entry, was obtained using the retrograde technique with centralization of the nail inside the medullary canal

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