The Effect of tibial tuberosity advencement (TTA) on caudal cruciate ligament (CaCL) rigidity in canine stifle joint under cranial femoral drawer. Comparison between intact, cranial cruciate ligament-deficient (CrCL-deficient) and TTA knee: an ian in-vitr

Efecto del avance de la tuberosidad tibial (ATT) sobre la rigidez del ligamento cruzado caudal en articulación de rodilla canina bajo fuerza femoral cranial. Comparación entre rodilla intacta, con rotura de ligamento cruzado cranial y con la ATT: estudio experimental in-vitro

• Marta Musté-Rodríguez Universidad Politécnica de Cataluña
• Elsa Pérez-Guindal Universidad Politécnica de Cataluña

Keywords: Caudal cruciate ligament, cranial cruciate liga ment-deficient, canine stifle joint, orthopaedic plates, tibial tuberosity advancement

Abstract

The tibial tuberosity advancement (TTA) is a surgical technique used to repair cranial cruciate ligament-deficient (CrCL-deficient) canine knees. The aim of this study was to assess the effect of TTA on caudal cruciate ligament (CaCL) under femoral anterior force, in a 135° joint extension angle; and the role of CaCL in an CrCL-deficient knee. Five fresh cadaveric adult canine stifle joints were tested in an apparatus in which muscle forces were simulated. Each knee was tested in three different conditions: intact, CrCL-deficient knee and with TTA surgery. Shear force (Newtons, N) and CaCL deformation (millimetres, mm) were measured using sensors and the ligament rigidity (force divided by deformation, N/mm) was calculated and compared between the three knees. The mean rigiditiy values increased from intact knee, 104.4 N/mm (SD 3.6), to CrCL-deficient knee, 136.5 N/mm (SD 7.5). However, the rigidity was even greater when applying the TTA, 257.2 N/mm (SD 21.1). Since, stress on the CaCL in CrCL-deficient knees was greater than in intact knees, the ligament assumed a more important role. On the other hand, the TTA technique generates an overload on the CaCL until rigidity exceeds its load-bearing capacity. Although the in-vitro models are far from reality, these findings suggest the need to further study the effects of TTA on the CaCL.

References

AGUILERA TEJERO, E.; ESTEPA, J.C.; LOPEZ, I.; BAS, S.; RODRIGUEZ, M. Polycystic kidneys as a cause of chronic renal failure and secondary hypoparathyroidism in a horse. Equine Vet. J. 32:167–169. 2000.

BADIOLA DÍEZ, J.; CAMÓN URGEL, J.; HIDALGO CHAPADO, JM. Renal cystic involvement in equidae. Arch. Esp. Urol. 33(1):77-104. 1980.

BERNSTEIN, J. A classification of renal cysts. Perspect. Nephrol. Hypertens. 4:7-30. 1976.

CARLTON, W.; DONALD MCGAVIN, M. Urinary System. Thomson’s Special Veterinary Pathology. 2nd. Ed. Mosby –Year Book, Inc. St. Louis, Missouri. Pp. 214. 1995.

DONALD MCGAVIN, M.; ZACHARY, J. Urinary System. Pathologic Basis of Veterinary Diseases. 4th. Ed. Mosby Elsevier St. Louis, Missouri. Pp. 627-628. 2007.

GRANT AXIE, M. Urinary System. Pathology of Domestic Animals. 6th Ed. Vol. 2. Elsevier. St. Louis, Missouri. Pp. 394-396. 2016.

JUBB, K.; KENNEDY, P.; PALMER, N. Urinary System. Pathology of Domestic Animals. 4th Ed.Vol. 2. Academic Press, Inc. San Diego, California. Pp. 463-464. 1993.

MARTINEZ, J.; GRANTHAM, J. Polycystic kidney disease: etiology, pathogenesis, and treatment. Dis. Mon. 41(11):693-765. 1995.

SCOTT, PC.; VASEY, J. Progressive polycystic renal-disease in an aged horse. Aust. Vet. J. 63:92–93. 1986.

VAN DEN BRAND, JM.; HENDRIKS ONSTEIN, WK.; KIK, MJ.; GRÖNE, A.; VAN SLOET, O. Renal cysts, nephrolithiasis, and ovarian cysts in a donkey suspected of having been sexually abused. Tijdschr Diergeneeskd. 131(20):730-5. 2006.