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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: Unexpected early loosening of rectangular straight femoral Zweymüller stems with an alumina-reduced surface after total hip arthroplasty—a prospective, double-blind, randomized controlled trial

Fig. 4

Comparison of radiolucent lines (RLs) by Gruen zones between standard (STD) stem group and the new technology (NT) stem group. Zones 1–7 on an anteroposterior view at 12 months (a) and at 24 months (c) follow-up. Zones 8–14 on an axial view at 12 months (b) and 24 months (d)

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