Marlo The Chinchilla
We would like to say a big thank you to Martin and all the staff at Barkes Corner Vet Hospital who helped us with our baby chinchilla Marlo. Just 2 days after bringing him to his new home he broke his leg. Martin came up with a perfect concept to keep his leg together to heal. Now he is all happy bouncing around again. Thank you so much.
Regards
Jessica Maclennan
Marlo the chinchilla unfortunately caught his back foot in the wires of his cage. This resulted in a fracture to his tibia and fibula bones (shin bones) of one of his hind legs. Chinchillas are medium sized rodents that originate in countries of the South American Andes mountains such as Peru, Chile, Bolivia and Argentina.
They have luxurious fur coats and are generally nocturnal animals. An adult chinchilla weighs about 400-600g
which is about the size of a large rat. Marlo is a young juvenile male who weighed 300g
at the time of the accident. The tibia bone was only about 3mm diameter in the area that it fractured!
The tibia is the most commonly fractured bone in the chinchilla. It is a relatively long bone and has little muscle and soft tissue covering it in some places. Bandages and splints are difficult to apply to small mammals and may not provide adequate stabilisation of the bone.
Considering this and the fragmented type of fracture present, I decided to apply an External Skeletal Fixator (ESF) to the bone. Small metal pins were passed through the bone and bent over.
Epoxy putty was used to bind the pins together so the fractured ends of the bone were held still to allow the bones to heal. I was a little concerned that Marlo might decide to chew the putty that was holding the pins together but luckily he was a great patient and left it all alone.
4 weeks
after surgery I re-xrayed Marlo’s leg. The fractures had completely healed and the tibia bone had already remodelled so that the original fractures were difficult to see. I removed the ESF from the leg. The tibia was weakened compared to normal so Marlo needed some quiet time after the pins were removed.
The ESF protects the fracture site well but also relieves much of the normal weight bearing forces. This can cause the bone to be weaker initially but this improves as weight bearing on the leg increases.
This was a great case to manage. It combined 2 of my special interests – exotic companion mammals and orthopaedic surgery. A big thanks to Marlo’s human family for agreeing to repair his fractured leg.
Martin Earles – Marlo’s Vet