"Feel the Force"-Prevalence of Subjectively Assessed Saddle Fit Problems in Swiss Riding Horses and Their Association With Saddle Pressure Measurements and Back Pain.

Ill-fitting saddles can impair the well-being and performance of horses. Saddle fit is generally assessed subjectively by a trained professional or with an electronic saddle pressure mat, but little is known about the agreement between both methods. The study aims were (1) to assess the prevalence of saddle fit issues in a riding sound Swiss horse population, (2) to investigate how well the subjective assessment correlates with objectively measured pressure magnitude and distribution under the saddle during riding, and (3) how well both correlate with back pain of the horse. Only 10% of the saddles were free of the assessed problems. Pressures exceeded clinically relevant thresholds in 15% of the horses. There was no clear correlation between back pain and pressure magnitude, but back pain was associated with certain subjectively assessed fit problems. Statistically significant associations between fit problems and the expected pressure patterns were found for panel angles, curvature of the saddle, width of the panel channel, and the waist of the saddle. There was no or limited association of pressure patterns with the balance of the saddle, width and angle of the tree head, or the symmetry of the panels. The results revealed that certain fit problems were reflected in the electronically measured pressure distribution and that the subjective assessment can therefore provide relevant information. Pressure magnitude showed only limited association with back pain, which indicates that there are other factors involved in the development of back problems in horses.