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Revista de la Asociación Argentina de Ortopedia y Traumatología

versión On-line ISSN 1852-7434

Resumen

DIAZ GALLARDO, Paula et al. Effects of compression and transfiction of the physes by different sutures: Experimental stydy in rabbits. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2011, vol.76, n.3, pp. 205-2010. ISSN 1852-7434.

Background: To determine changes in the distal femoral physis when surrounded or transfixed with different suture materials. Methods: Twenty-four distal femoral physes of 18 New Zealand rabbits (7-8 weeks old) were divided into four groups of six rabbits each. In group 1 a Prolene 3.0 suture was used. Group 2 was divided in two, number 2a used a Vicryl 3.0 suture, and number 2b a linen 60 suture; and in group 3 a Vicryl 4.0 suture was used. The suture in groups 1, 2a and 2b transfixed the physis surrounding the lateral femoral condyle. In group 3 the physis was surrounded, not transfixed. Results: Imaging: In all cases the limb was shorter, group 3 was the most affected (average, 9.75 mm.). There were 9 cases of medial patellar dislocation (4 in group 2, 2 in group 1 and 2 in group 3). Five cases of varus deformity were found (1 in group 1, 2 in group 3 and 2 in group 2). Pathological anatomy results: The five layers of the physis were adequately preserved in all cases. No inflammatory response or foreign body-type giant cells, or epiphyseal fusions were found. Connective tissue around the suture was found only in group 2b. Conclusions: Damage to the physis was mainly caused by the amount of pressure exerted on it regardless of the suture material used in each case because the pathological anatomy results did not reveal any abnormalities, and radiologically, a greater femoral varus and shortening was found in group 3 in which the pressure on the physis was greater in all its diameter without transfixing the physis. In groups 1, 2a and 2b the pressure was exerted around the lateral femoral condyle transfixing the physis.

Palabras llave : Physis; Compression; Transfixion; Sutures; Pressure.

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