Subscribe to RSS
Download PDF
DOI: 10.3415/VCOT-07-05-0046
Digital measurement of radiographic tibial plateau angle. A comparison to measurement on printed digital images
Publication History
Received
14 May 2007
Accepted
04 July 2007
Publication Date:
17 December 2017 (online)
Summary
Pre-operative digital radiographs from 50 dogs undergoing a tibial plateau leveling osteotomy were evaluated. Tibial plateau angles were measured directly on printed films and measured on digital images using two different commercial DICOM viewers. The radiographs were scored for osteoarthritis and positioning. Using pooled results, the mean TPA from the digital images employing Web1000 (26.47° ± 3.90) was significantly higher then the mean TPA using film radiographs (25.41° ± 3.51), or IQ-View Pro (25.48° ± 3.89). There was not a significant difference between mean TPA using radiographs or IQ-view. Digital TPA measurement using built-in angle calipers in the clinical setting is a valid technique compared to measurements from film radiographs, and produces reproducible results. However, before changing to digital measurements, the chosen software programme should be validated against measurements using film radiographs to determine the magnitude of differences.
-
References
- 1 Slocum Slocum, Devine T. Cranial tibial thrust: a primary force in the canine stifle. J Am Vet Med Assoc 1983; 183: 456-459.
- 2 Slocum B, Devine-Slocum T. Tibial plateau leveling osteotomy for cranial cruciate ligament rupture. In: Current Techniques in Small Animal Surgery. Bojrab MJ. (ed). Philadelphia: Williams & Wilkins; 1998: 1209-1215.
- 3 Warzee C, Dejardin L, Arcnoczky SP. et al. Effect of tibial plateau leveling on cranial and caudal ti- bial thrusts in canine cruciate-deficient stifles: an in vitro experimental study. J Vet Surg 2001; 30: 278-286.
- 4 Robinson D, Mason D, Evans R. et al. The effect of tibial plateau angle on ground reaction forces 4-17 months after tibial plateau leveling osteotomy in Labrador retrievers. J Vet Surg 2006; 35: 294-299.
- 5 Baroni E, Matthias R, Marcellin-Little D. et al. Comparison ofradiographic assessments ofthe tibial plateau slope in dogs. Am J Vet Res 2003; 64: 586-589.
- 6 Caylor K, Zumpano C, Lisanne ME. et al. Intra- and interobserver measurement variability of ti- bial plateau slope from lateral radiographs in dogs. J Am Anim Hosp Assoc 2001; 37: 263-268.
- 7 Fettig A, Rand W, Sato AF. et al. Observer variability of tibial plateau slope measurements in 40 dogs with cranial cruciate ligament-deficient stifle joints. J Vet Surg 2003; 32: 471-478.
- 8 Grierson J, Sanders M, Guitan J. et al. Comparison of anatomical tibial plateau angle versus observer measurement from lateral radiographs in dogs. Vet Comp Orthop Traumatol 2005; 18: 215-219.
- 9 Dejardin L. Tibial plateau leveling osteotomy. In: Textbook of Small Animal Surgery. Slatter D. (ed). Philadelphia: Saunders; 2003: 2133-2143.
- 10 Reif U, DeJardin L, Probst CW. et al. Influence of limb positioning and measurement method on magnitude of the tibial plateau angle. J Vet Surg 2004; 33: 368-375.
- 11 Mattoon Mattoon, Smith C. Breakthroughs in Radiography: Computed Radiography. Compend Contin Educ Pract Vet 2004; 26: 58-66.
- 12 Bushberg JT, Seibert JA, Leinholdt EM. et al. The Essential Physics of Medical Imaging, 2nd ed. Philadelphia: Lippincott Williams & Wilkins 2002; 315-316.
- 13 Reif U, Hulse DA, Hauptman JG. Effect of tibial plateau leveling on stability of the canine cranial cruciate-deficient stifle joint: an in vitro study. J Vet Surg 2002; 31: 147-154.