Vet Comp Orthop Traumatol 2012; 25(01): 22-27
DOI: 10.3415/VCOT-11-05-0074
Original Research
Schattauer GmbH

Closed reduction and percutaneous fixation of sacroiliac luxations in cats using 2.4 mm cannulated screws – a cadaveric study

A. Fischer
1   Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University, Giessen, Germany
,
E. Binder
1   Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University, Giessen, Germany
,
U. Reif
2   Tierklinik Dr. Reif, Böbingen, Germany
,
M. Biel
1   Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University, Giessen, Germany
,
J. Bokemeyer
1   Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University, Giessen, Germany
,
M. Kramer
1   Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University, Giessen, Germany
› Author Affiliations
Further Information

Publication History

Received: 14 May 2011

Accepted: 26 July 2011

Publication Date:
18 December 2017 (online)

Summary

Objectives: To describe fluoroscopically assisted percutaneous placement of 2.4 mm cannulated screws for fixation of artificially induced sacroiliac luxations in cats, and to evaluate the success of this technique in restoration of normal pelvic anatomy.

Methods: Fluoroscopically assisted closed reduction and percutaneous fixation of sacroiliac luxations using 2.4 mm cannulated screws was performed in cadavers of 12 cats. Pre- and postoperative radiographs and postoperative computed tomographic scans were used to evaluate screw placement, screw purchase within the sacral body, reduction of the sacroiliac joint, pelvic canal diameter ratio, and hemipelvic canal width ratio.

Results: Mean total surgical time was 6 minutes and 10 seconds ± 53 seconds and mean total time of fluoroscopic screening for each procedure was 44 seconds ± 6 seconds. Mean percent of reduction was 98.33% and mean screw purchase within the sacral body was 73%. Eleven out of 12 screws were placed in a satisfactory location in the sacral body. Pelvic canal diameter ratio and hemipelvic canal width ratio indicated successful restoration of the pelvic anatomy.

Clinical significance: Our results confirm that fluoroscopically assisted percutaneous placement of 2.4 mm cannulated screws is a feasible technique for fixation of sacroiliac luxations in cats. Mechanical properties of this fixation technique need to be evaluated before the use in clinical patients.

 
  • References

  • 1 Bookbinder PF, Flanders JA. Characteristics of pelvic fractures in the cat. Vet Comp Orthop Trauma-tol 1992; 122-127.
  • 2 Brinker WO, Piermattei DL, Flo GL. Sacroiliac fracture-luxation. In: Handbook of Small Animal Orthopedics and Fracture Repair. Philadelphia: WB Saunders Co; 2006: 436-441.
  • 3 Averill SM, Johnson AL, Schaeffer DJ. Risk factors associated with development of pelvic canal stenosis secondary to sacroiliac separation: 84 cases (1985–1995). J Am Vet Med Assoc 1997; 211: 75-78.
  • 4 Hulse DA, Shires P, Waldron D. Sacroiliac luxations. Compend Contin Educ Prac Vet 1985; 493-499.
  • 5 Tomlinson JL. Fractures of the pelvis. In: Slatter D. editor. Textbook of Small Animal Surgery. Philadelphia: Saunders; 2003: 1989-2001.
  • 6 Tomlinson JL, Cook JL, Payne JT. et al. Closed reduction and lag screw fixation of sacroiliac luxations and fractures. Vet Surg 1999; 28: 188-193.
  • 7 Tonks CA, Tomlinson JL, Cook JL. Evaluation of closed reduction and screw fixation in lag fashion of sacroiliac fracture-luxations. Vet Surg 2008; 37: 603-607.
  • 8 Borer LR, Voss K, Montavon PM. Ventral abdominal approach for screw fixation of sacroiliac luxation in clinically affected cats. Am J Vet Res 2008; 69: 549-556.
  • 9 Shales C, Moores A, Kulendra E. et al. Stabilization of sacroiliac luxation in 40 cats using screws inserted in lag fashion. Vet Surg 2010; 39: 696-700.
  • 10 Kudnig ST, Fitch RB. Trans-ilial and transsacral brace fixation of sacral fractures and sacro-iliac luxations (seven cases). Vet Comp Orthop Traumatol 2004; 210-215.
  • 11 Raffan PJ, Joly CL, Timm PG. et al. A tension band technique for stabilisation of sacroiliac separations in cats. J Small Anim Pract 2002; 43: 255-260.
  • 12 Kaderly RE. Stabilization of bilateral sacroiliac fracture-luxations in small animals with a single transsacral screw. Vet Surg 1991; 20: 91-96.
  • 13 Lautersack O. Bilateral sacroiliac luxation in the cat – A new technique with a single transsacral screw, washers and a counternut. Kleintierpraxis 2007; 52: 16-20.
  • 14 Leasure CS, Lewis DD, Sereda CW. et al. Limited open reduction and stabilization of sacroiliac fracture-luxations using fluoroscopically assisted placement of a trans-iliosacral rod in five dogs. Vet Surg 2007; 36: 633-643.
  • 15 Borer LR, Voss K, Montavon PM. Ventral abdominal approach for screw fixation of sacroiliac luxation in cadavers of cats and dogs. Am J Vet Res 2008; 69: 542-548.
  • 16 DeCamp CE, Braden TD. Sacroiliac fractures-separation in the dog: a study of 92 cases. Vet Surg 1985; 127-130.
  • 17 Burger M, Forterre F, Waibl H. et al. Sacroiliac luxation in the cat. Part 2: cases and results. Kleintierpraxis 2005; 50: 287-297.
  • 18 Decamp CE, Braden TD. The Surgical Anatomy of the Canine Sacrum for Lag Screw Fixation of the Sacroiliac Joint. Vet Surg 1985; 14: 131-134.
  • 19 Shales CJ, Langley-Hobbs SJ. Canine sacroiliac luxation: Anatomic study of dorsoventral articular surface angulation and safe corridor for placement of screws used for lag fixation. Vet Surg 2005; 34: 324-331.
  • 20 Bowlt KL, Shales CJ. Canine sacroiliac luxation: anatomic study of the craniocaudal articular surface angulation of the sacrum to define a safe corridor in the dorsal plane for placement of screws used for fixation in lag fashion. Vet Surg 2011; 40: 22-26.
  • 21 Burger M, Forterre F, Waibl H. et al. Sacroiliac luxation in the cat Part I: Morphometric data to the position of the screw placement. Kleintierpraxis 2004; 49: 763-772.
  • 22 Shales CJ, White L, Langley-Hobbs SJ. Sacroiliac luxation in the cat: defining a safe corridor in the dorsoventral plane for screw insertion in lag fashion. Vet Surg 2009; 38: 343-348.
  • 23 Burger M, Forterre F, Brunnberg L. Surgical anatomy of the feline sacroiliac joint for lag screw fixation of sacroiliac fracture-luxation. Vet Comp Orthop Traumatol 2004; 17: 146-151.
  • 24 Gansslen A, Hufner T, Krettek C. Percutaneous iliosacral screw fixation of unstable pelvic injuries by conventional fluoroscopy. Oper Orthop Traumatol 2006; 18: 225-244.
  • 25 Esses SI, Botsford DJ, Huler RJ. et al. Surgical anatomy of the sacrum – a guide for rational screw fixation. Spine 1991; 16: S283-S288.
  • 26 Leggon R, Lindsey RW, Doherty BJ. et al. The holding strength of cannulated screws compared with solid core screws in cortical and cancellous bone. Journal of orthopaedic trauma 1993; 7: 450-457.
  • 27 Thompson JD, Benjamin JB, Szivek JA. Pullout strengths of cannulated and noncannulated cancellous bone screws. Clin Orthop Rel Res 1997; 241-249.
  • 28 Hearn TC, Schatzker J, Wolfson N. Extraction strength of cannulated cancellous bone screws. J Orthop Trauma 1993; 7: 138-141.
  • 29 Brown GA, McCarthy T, Bourgeault CA. et al. Mechanical performance of standard and cannulated 4.0–mm cancellous bone screws. J Orthop Res 2000; 18: 307-312.
  • 30 Collinge CA, Stern S, Cordes S. et al. Mechanical properties of small fragment screws. Clin Orthop Rel Res 2000; 277-284.
  • 31 Kissel CG, Friedersdorf SC, Foltz DS. et al. Comparison of pullout strength of small-diameter cannulated and solid-core screws. J Foot Ankle Surg 2003; 42: 334-338.
  • 32 Sowden D, Schmitz JP. AO self-drilling and self-tapping screws in rat calvarial bone: an ultrastructural study of the implant interface. J Oral Maxillofac Surg 2002; 60: 294-299. discussion 300.
  • 33 Merk BR, Stern SH, Cordes S. et al. A fatigue life analysis of small fragment screws. J Orthop Trauma 2001; 15: 494-499.
  • 34 Koch D. Plates and screws. In: Johnson AL, Houlton JEF, Vannini R. editors. AO Principles of Fracture Management in the Dog and Cat. Davos, Switzerland: AO Publishing; 2005: 27-50.
  • 35 Ho P, Cheng SW, Wu PM. et al. Ionizing radiation absorption of vascular surgeons during endovascular procedures. J Vasc Surg 2007; 46: 455-459.