We studied the usefulness of screws self-reinforced with polyglycolic acid (PGA) as a method for epiphyseodesis of the greater trochanter of rabbits. Fifteen 10-week-old rabbits underwent implantation of a screw on the left greater trochanter (LGT) through the trochanteric physis. The right greater trochanter (RGT) was perforated but no screw was placed. The animals were divided into three groups of five according to postoperative follow-up time (1, 2 and 3 months). Standardized radiographs were made at monthly intervals of both femurs of all animals until killed. The joint-trochanter distance (JTD) and cervico-diaphyseal angle (CDA) were evaluated. After animals were killed, a histological study was made. RGT perforation generated a bone bridge in all animals. PGA screws did not produce enough compression to modify JTD and CDA values and behaved like a physeal interposition material. Progressive peripheral deterioration of the screws led to the formation of bone bridges in the LGT, which were smaller than those observed in the RGT. Our results suggest the use of absorbable implants in growth cartilage surgery as an interposition material for the treatment of physeal bridges and as a method of producing temporary physeal block by compression.
|Translated title of the contribution||Physeal block with absorbable implants|
|Number of pages||6|
|Journal||Revista de Ortopedia y Traumatologia|
|Publication status||Published - Aug 1998|
- Biodegradable polymers
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