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Partial Rupture of Cranial Cruciate Ligament: Causes & Care
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A surprising number of cases of stifle lameness are caused by partial rupture of the cranial cruciate ligament. The veterinarian needs only to explore joints in the face of minimal physical findings to verify this.
An increasing number of dogs (especially Labrador retrievers and Rottweilers) sustain partial tears at a young age (6 to 24 months). Often, tears are bilateral and mimic hip dysplasia clinically, which may also be a concurrent problem.
It is our experience that cruciate problems cause more clinical signs than hip dysplasia and should be addressed first before it is deemed necessary to perform any surgical procedure on the hips.
Clinical signs and history mimic those of complete rupture but are not as dramatic, and secondary arthrosis is much slower in developing, probably because the meniscus is not damaged as often as in complete ligament rupture.
Degenerative changes can be extensive given enough time. The cranial cruciate ligament functionally is composed of two parts: the small craniomedial band (CrMB) and the larger caudolateral band (CdLB). The CrMB is taut in both flexion and extension, whereas the CdLB is taut only in extension.
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Playing with other animals is not allowed during confinement. If there are other pets in your household, you will need to keep them separated.
During confinement, your pet's food intake needs to be reduced to help prevent weight gain. Most dogs will maintain their current weight if their food intake is cut in half. Water consumption should remain normal.
The first two weeks following surgery you will need to monitor your pet's incisions. Licking or chewing can cause infection or sutures to loosen. If you notice that your pet has started licking, you will need to take steps to discourage it from doing so.
It takes a minimum of six to eight weeks for bones to heal.
One of the most difficult aspects of confinement is that the animals will frequently feel better long before they are healed. At this point your pet will start being more careless of the operated limb and is then more likely to be overactive and injure itself. Until the bone is healed, you must adhere strictly to the confinement guidelines and not allow your pet to do more.
If your pet is jumping or bouncing in its confined area, it is being too active. Tranquilizers may be required to help alleviate your pet's anxiety or control its activity.
If at any time during your pet’s recovery and healing it does anything that causes it to cry out or give a sharp yelp, contact your veterinarian.
Following surgery your pet should always maintain at its current level of function, or improve. If at any time during your pet's recovery and healing it has a setback or decrease in function, contact your veterinarian.
It is imperative that you inform your veterinarian at once if your pet does something that is potentially harmful to the surgery. If something has occurred which jeopardizes the outcome of surgery, it is usually less difficult to correct if it is caught right away, which leads to a better outcome for your pet.
If your pet is too active during its confinement it may injure itself or slow healing which increases the amount of time your pet must be confined.
Follow up appointments are usually needed two weeks post-operatively to monitor incisions and healing. At eight weeks post-operatively radiographs are taken at which time your pet is started on a regulated activity regime. A final appointment at four months post-operatively is needed for additional radiographs and final instructions before returning your pet to normal activity.
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We're always happy to give your furry friend care at our hospital. Get in touch today!
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