Absorbable screws through the greater trochanter do not disturb physeal growth. Rabbit experiments

Jorge Gil-Albarova, Milena Fini, Raúl Gil-Albarova, Marga Melgosa, Nicoli Aldini-Nicolo, Roberto Giardino, Fernando Seral

Research output: Contribution to journalArticlepeer-review

Abstract

We studied the effect of implantation of self-reinforced polyglycolic acid (SR-PGA) screws through the greater trochanter in rabbits. 15 rabbits aged 10 weeks had an SR-PGA screw inserted through the left trochanter physis. A similar drilling was made through the right greater trochanter without screw implantation. The animals were assigned to 3 groups of 5, and were killed after 1, 2 or 3 months. Radiographs of both femurs were obtained monthly and the articulo-trochanteric distance and the neck-shaft angle were measured. After killing the animals, a histological study was performed. The drilling on the right trochanter generated a bony bridge in all the animals. The SR-PGA screws did not give rise to an epiphysiodesis. The progressive peripheral degradation of the implants gave rise to the formation of only modest bridges, which were smaller in size than those observed in the control trochanter. Our findings suggest that absorbable PGA screws implanted through a growth plate cause only minor bone formation and no epiphyseodesis.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalActa Orthopaedica Scandinavica
Volume69
Issue number3
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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