Abstract
Objective This article aims to describe the use of a single transsacral screw and nut in a
cohort of cats with bilateral sacroiliac (SI) luxation and document its radiographic
and clinical outcome.
Methods Medical records and radiographic studies of cats with bilateral SI luxation managed
with a transsacral screw and nut stabilization were reviewed. Short-term follow-up
included clinical examination and radiographs. Long-term follow-up was via owner questionnaire.
Results Twenty consecutive cats with bilateral SI luxation were included. Six cats (35%)
had additional musculoskeletal injuries that required stabilization. Luxations were
stabilized with a single 2.7 cortical self-tapping transsacral screw and nylon nut
(a metallic nut was used in one case). Postoperative radiographs confirmed SI reduction
in all cats and a mean pelvic canal width ratio of 1.21 (a ratio of ≥1.1 was considered
optimal). All cats available at follow-up examination were able to walk without signs
of discomfort. Evaluation of follow-up radiographs showed maintenance of SI reduction
and slight reduction of mean pelvic canal width ratio (1.18). Fourteen owner questionnaires
were returned (median follow-up time of 40 months): nine cats were deemed to have
normal activity and five cats were reported to have slight to mild reduced ability
to jump or run.
Clinical Significance The use of transsacral screw and nut stabilization of bilateral SI luxation in cats
is a successful, repeatable and safe technique.
Keywords
bilateral SI luxation - cats - traumatology - transsacral screw - questionnaire
