Cadi is a young working Springer Spaniel who's owners started to notice intermittent lameness affecting both the left and the right thoracic limbs. Plain radiographs were taken at Cadi's referring practice, but these images didn't reveal the cause of the lameness. Cadi was referred for a CT scan which showed she had bilateral Humeral Intracondylar Fissures (HIF), a condition most commonly seen in Spaniels, particularly Springer Spaniels.
The aetiology of this condition remains unclear, although it is thought that HIF lesions are stress fractures, rather than a developmental abnormality, as was previously thought. If left untreated, HIF lesions can predispose patients to fractures of the humeral condyle, or even complicated Y fractures of the distal humerus. Stabilisation of the HIF lesion with a transcondylar screw reduces lameness and the possibility of a fracture affecting this region.
From Cadi's CT scan, we were able to work with Fusion Implants www.fusionimplants.com to plan the optimal position of the transcondylar screws and prepare custom 3D printed drill guides to enable the screws to be placed accurately.
Cadi has made an excellent recovery post-operatively and is very much looking forward to returning to work in the next shooting season!
Radiographs of the right limb (pre and post operative)
Radiographs of the left limb (pre and post operative)
CT images planning the position of the 3D printed custom drill guide for placing the transcondylar screws.
Buzzy is a rescue yorkshire terrier, and one of our smaller canine patients at just over 3 Kg. Buzzy was involved in a dog fight which resulted in right coxo-femoral luxation. Buzzy's hip was reduced shortly after luxation, but as is often the case, Buzzy's hip reluxated and his owners opted for surgical stabilisation. Buzzy's hip was explored surgically and torn soft tissue and a haematoma was removed from the acetabulum. The coxofemoral joint was stabilised with a toggle system which involves passing a small metal rod (the toggle) attached to high tensile braided nylon through a drilled bone tunnel in the femoral neck, head and acetabulum before tensioning and securing the nylon against the femur. After a period of rest, Buzzy made an uneventful recovery from surgery.
Post-operative radiograph showing reduced coxofemoral joint and toggle repair
Pre-operative radiograph showing craniodorsal coxofemoral luxation
Kitty is a 13 year old domestic short haired cat who found herself in trouble after falling from a work surface and fracturing three of her metatarsal bones including two of the main weight bearing metatarsals. The main challenge in repair of these fractures was the small diameter of the metatarsal bones, at only 4 mm across they would only accommodate the tiniest of implants.
A locking 1.5 kit was used to apply dorsal plates to metatarsals 2 and 3, and metatarsal 4 was repaired with a dowel pin due to the small amount of proximal bone stock.