Peer-reviewed veterinary case report
Sacroiliac joint dislocation in cats fixed with lag screws
By C. Shales et al.·Published in Veterinary surgery·2010·View original on Semantic Scholar →
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Original publication title: Stabilization of sacroiliac luxation in 40 cats using screws inserted in lag fashion.
- Species:
- cat
Plain-English summary
A group of 40 cats with sacroiliac luxation, a condition where the joint connecting the spine to the pelvis is dislocated, underwent surgery to stabilize the joint using screws. The study found that screws inserted to a depth of at least 60% of the sacral width significantly reduced the risk of the screws loosening after surgery. Most of the screws were placed correctly, and the researchers noted that the stability of the repair was crucial for recovery. This information can help veterinarians ensure better outcomes for cats undergoing this type of surgery.
People also search for: cat sacroiliac luxation treatment · cat surgery screw placement · cat joint dislocation recovery
Abstract
OBJECTIVE To (1) identify prognostic indicators for stability after stabilization of sacroiliac luxation with screws inserted in lag fashion and (2) report dorsoventral dimensions of the sacrum in cats. STUDY DESIGN Multicenter retrospective study. SAMPLE POPULATION Cats (n=40) with sacroiliac luxation. METHODS Case records and radiographs of cats presented at the Queen's Veterinary School Hospital Cambridge and the Royal Veterinary College Hatfield for screw fixation of sacroiliac luxation were reviewed. Dorsoventral dimensions of 15 feline cadaveric sacral bodies were measured to identify the appropriate implant size for use in fixation with screws inserted in lag fashion. RESULTS Of 40 cats, 13 had left, 14 right, and 13 bilateral sacroiliac luxations. Of 48 screws analyzed, 42 (87.5%) were placed within the sacral body or exited ventrally and 6 (12.5%) were considered malpositioned. Screw purchase within the sacrum was statistically different between unstable and stable repairs (P=.001). Using confidence intervals for screw length within the sacrum and effect on stability, the lowest screw depth that contained 95% of the screws that did not loosen was approximately 60% of the sacral width. Mean dorsoventral sacral dimension at its narrowest point was 5.9+/-1.14 mm. There was no significant difference in the incidence of implant loosening between those luxations that were 100% reduced and those that were <100% reduced (P=.7837). CONCLUSIONS Screw purchase within the feline sacrum of at least 60% of the sacral width significantly reduces the risk of loosening. CLINICAL RELEVANCE Screw placement to a depth of 60% of the width of the feline sacrum is recommended.
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Search related cases →Original publication on Semantic Scholar: https://www.semanticscholar.org/paper/20459497