Comparison of desired radiographic advancement distance and true advancement distance required for patellar tendon–tibial plateau angle reduction to the ideal 90° in dogs by use of the modified Maquet technique

• Autores: Paul Pillard, Véronique Livet, Quentin Cabon, Camille Bismuth
• Localización: American Journal of Veterinary Research, ISSN-e 1943-5681, ISSN 0002-9645, Vol. 77, Nº. 12, 2016, págs. 1401-1410
• Idioma: inglés
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• Resumen

  • OBJECTIVE To evaluate the validity of 2 radiographic methods for measurement of the tibial tuberosity advancement distance required to achieve a reduction in patellar tendon–tibial plateau angle (PTA) to the ideal 90° in dogs by use of the modified Maquet technique (MMT).

    SAMPLE 24 stifle joints harvested from 12 canine cadavers.

    PROCEDURES Radiographs of stifle joints placed at 135° in the true lateral position were used to measure the required tibial tuberosity advancement distance with the conventional (AM) and correction (AE) methods. The MMT was used to successively advance the tibial crest to AM and AE. Postoperative PTA was measured on a mediolateral radiograph for each advancement measurement method. If none of the measurements were close to 90°, the advancement distance was modified until the PTA was equal to 90° within 0.1°, and the true advancement distance (TA) was measured. Results were used to determine the optimal commercially available size of cage implant that would be used in a clinical situation.

    RESULTS Median AM and AE were 10.6 mm and 11.5 mm, respectively. Mean PTAs for the conventional and correction methods were 93.4° and 92.3°, respectively, and differed significantly from 90°. Median TA was 13.5 mm. The AM and AE led to the same cage size recommendations as for TA for only 1 and 4 stifle joints, respectively.