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Objectives:
Correct screw placement in sacroiliac luxation (SIL) surgery is crucial to prevent complications such as spinal canal breaches and damage to the median sacral vessels and nerves. While fluoroscopic assistance has been described for managing SIL, no studies have evaluated the use of 3D-printed guides for this procedure in cats. This study aims to assess the feasibility of developing a universal 3D-printed guide for the placement of a 2.7mm screw to stabilize SIL in cats weighing between 2.5 and 6.6kg.
Methods:
A total of 61 CT scans of hemisacra (HS) from 34 skeletally mature cats were analyzed. The sacrum was segmented using 3D software, and key anatomical measurements and angles of the sacral articular surfaces were recorded. Based on average dimensions, a 3D guide was designed and tested in silico on the 61 hemisacra to determine if a virtual 2.7mm screw would remain within safe corridors in both dorso-ventral and cranio-caudal directions.
Results:
Sacral measurements showed low variance (CV: 4.89%-7.27%) and narrow confidence intervals, indicating consistency in sacral size among cats in this weight range. In silico testing showed that 60 out of 61 screws (98%) were placed within safe corridors, with the only unsafe placement occurring in a giant breed cat.
Conclusions:
Cats weighing between 2.5 and 6.6 kg exhibit consistent sacral dimensions, making a universal 3D-printed guide for SIL surgery feasible. The guide demonstrated a 98% success rate in safe screw placement, supporting its potential for clinical application.
34th Annual Scientific Meeting proceedings
Stream:
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Session:
Date/Time: 05-07-2025 (16:45 - 17:00) | Location:
Date/Time: 05-07-2025 (16:45 - 17:00) | Location:
In-Silico Development of the Feline Universal Sacroiliac Luxation Guide (FUSIG): A Study of 61 Hemisacra
Quinonero-Reinaldos I1, Danielski A*2, Solano MA*2
1Bristol Vet Specialists, Bristol, United Kingdom, 2The Ralphs, Marlow, United Kingdom.
Objectives:
Correct screw placement in sacroiliac luxation (SIL) surgery is crucial to prevent complications such as spinal canal breaches and damage to the median sacral vessels and nerves. While fluoroscopic assistance has been described for managing SIL, no studies have evaluated the use of 3D-printed guides for this procedure in cats. This study aims to assess the feasibility of developing a universal 3D-printed guide for the placement of a 2.7mm screw to stabilize SIL in cats weighing between 2.5 and 6.6kg.
Methods:
A total of 61 CT scans of hemisacra (HS) from 34 skeletally mature cats were analyzed. The sacrum was segmented using 3D software, and key anatomical measurements and angles of the sacral articular surfaces were recorded. Based on average dimensions, a 3D guide was designed and tested in silico on the 61 hemisacra to determine if a virtual 2.7mm screw would remain within safe corridors in both dorso-ventral and cranio-caudal directions.
Results:
Sacral measurements showed low variance (CV: 4.89%-7.27%) and narrow confidence intervals, indicating consistency in sacral size among cats in this weight range. In silico testing showed that 60 out of 61 screws (98%) were placed within safe corridors, with the only unsafe placement occurring in a giant breed cat.
Conclusions:
Cats weighing between 2.5 and 6.6 kg exhibit consistent sacral dimensions, making a universal 3D-printed guide for SIL surgery feasible. The guide demonstrated a 98% success rate in safe screw placement, supporting its potential for clinical application.
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