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Updated: Jun 6, 2026
Surgical Technique of the 3-Dimensional-printed Personalized Hip Implant for the Treatment of Canine Hip Dysplasia
Published on: April 19, 2024
Use of the cumulative summation technique to quantitatively assess a surgical learning curve: canine total hip
Graham M Hayes1, Juan Ramirez, Sorrel J Langley Hobbs
1Department of Veterinary Medicine, University of Cambridge, Cambridge, UK. gh327@cam.ac.uk
Objective:
To quantitatively assess a surgical "learning curve" using the cumulative summation (CUSUM) score technique.
Study Design:
Application of a CUSUM technique to a consecutive series of surgical cases.
Animals:
Consecutive primary cemented total hip replacement (THR; n=116) in 106 dogs.
Methods:
Records of all dogs that had primary canine THR were reviewed. Data retrieved included date of surgery, postoperative complications, and duration of follow-up. The 12-week outcome was analyzed graphically and with a CUSUM technique.
Results:
One hundred and one (87%) procedures were "successful" and 15 (13%) developed major complications within 12 weeks (failures). The CUSUM chart clearly demonstrated an initial "learning curve" of ∼44 THR.
Conclusion:
The CUSUM technique can be used to demonstrate the learning curve for canine THR surgery.
