SURGICAL CASES

SURGICAL CASES

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[ Tibial Plateau Levelling Osteotomy – TPLO ]


Dogs walk on the tips of their toes rather than the flats of their feet.

 As a result of this there is a force which acts on the tibia every time they take a step. 

 This force is in a cranial direction and is known as cranial tibial thrust. This force is neutralised by the intact cruciate ligament but if this ligament deteriorates and ruptures there is an instability in the stifle joint every time the dog takes a step.


[ Corrective femoral osteotomy ]

TPLO aims to neutralise this force by levelling the top of the tibia (tibial plateau) so that on weightbearing it is perpendicular to the straight patella tendon (under tension during load bearing).   Vector mathematic dictates that this neutralises cranial tibial thrust and hence stabilises the cruciate deficient stifle.

 The top of the tibia is cut by a special bi-radial saw then rotated a pre measured distance related to the TPLO saw radius. The proximal tibia is temporarily stabilised then a TPLO plate is placed to hold the proximal tibia in position until the bone can heal.

[ Corrective femoral osteotomy ]

Corrective femoral osteotomy is used to treat grade IV medial patella luxation.
The femur is cut using the sagittal saw. A k wire is used to temporarily stabilise the femur while a supracondylar plate is placed.