The cranial cruciate ligament (CCL) plays a significant role in providing functional stability to the canine stifle joint and has been the topic of an increasing amount of attention in the veterinary community. The objective of this study was to evaluate the effects of CCL deficiency and common procedures for treatment of a ruptured CCL on patellar location within the trochlear groove. Five identical and anatomically accurate physical models of the left hind limb of a healthy dog were constructed using a combination of rapid-prototyping technologies and casting techniques. One model remained the intact control, one simulated a CCL deficient stifle and each of the remaining models underwent one of the three tibial osteotomy procedures to be examined: the Tibial Plateau Leveling Osteotomy (TPLO), Tibial Tuberosity Advancement (TTA), and the Triple Tibial Osteotomy (TTO). Physical testing via a custom testing apparatus was carried out for five stifle positions (75º, 96º, 113º, 130º, 148º) representing the normal range of motion of a large-breed dog. Confirmation of a cranial translation following transection of the CCL was in good agreement with literature. Cranial cruciate transection also caused a slight proximal shift of the patella with respect to the trochlear groove. The results of the models further suggest that both the TPLO and TTO procedures result in a more proximally located patella with respect to the trochlear groove, while the TTA results in a more distally located patella.
Identifer | oai:union.ndltd.org:NCSU/oai:NCSU:etd-08182008-225839 |
Date | 03 October 2008 |
Creators | Crimi, Christopher Scott |
Contributors | Dr. Andre P. Mazzoleni, Dr. Ola L. A. Harrysson, Dr. Denis J. Marcellin-Little, Dr. Harvey A. West II |
Publisher | NCSU |
Source Sets | North Carolina State University |
Language | English |
Detected Language | English |
Type | text |
Format | application/pdf |
Source | http://www.lib.ncsu.edu/theses/available/etd-08182008-225839/ |
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