Investigation of the Reliability of Saddle Fitters to Determine the Position of the Last Thoracic Vertebra of Horses Using Palpation Techniques: A Pilot Study

Kathryn J. Nankervis, Francesca Bradley, Katherine Kosek, Sue J. Dyson

Research output: Contribution to journalJournal Article

1 Citation (Scopus)

Abstract

Published guidelines indicate an English saddle tree should not extend beyond the 18th thoracic vertebra (T18). The study aimed to assess reliability of saddle fitters (SFs) to identify the T18 spinous process (SP). Part 1 investigated agreement between T18 (T18SF) as identified by three SFs using palpation and a veterinary surgeon (VS) using radiography (T18VS) in seven horses. Saddle fitter 1 and SF2 palpated the lumbosacral joint and counted cranially six SPs, whereas SF3 followed the rib curvature toward the dorsal midline. In part 2, SF1 and SF2 identified T18 by counting cranially five SPs in seven horses on two occasions. Agreement between SFs and VS was assessed using t tests and Bland-Altman plots. Interrater and intrarater reliability were estimated using intraclass correlation coefficients. In part 1, SF1 and SF2 found T18SF 4.3 cm (±4.1 and 4.0 cm, respectively) cranial to T18VS. Mean difference between T18SF3 and T18VS was 0.1 ± 4.9 cm (95% CI: −9.5 cm, 9.6 cm, P =.976). When counting cranially five SPs, mean difference between T18SF1 and T18VS was −1.5 ± 3.4 cm (95% CI: −8.3 cm; 5.1 cm; P =.265) and T18SF2 and T18VS was −0.3 cm ± 4.5 cm (95% CI: −8.8 cm; 8.5 cm; P =.847). Interrater reliability was “good” (ICC = 0.798). Intrarater reliability was “excellent” for SF1 (ICC = 0.905) and “good” for SF2 (ICC = 0.847). Counting cranially five SPs from the lumbosacral joint, when coupled with observation of the rib position and curvature should ensure a saddle is not placed beyond T18.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Equine Veterinary Science
Volume77
DOIs
Publication statusPublished - 1 Jun 2019

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Thoracic Vertebrae
saddles
Palpation
Ribs
chest
vertebrae
Horses
Joints
horses
Radiography
Observation
Guidelines
ribs
veterinarians
methodology
radiography
Surgeons

Keywords

  • 18th rib
  • Lumbosacral joint
  • Saddle fit
  • Thoracolumbar

Cite this

@article{ee7c0593c96341d288ba9432374b60f3,
title = "Investigation of the Reliability of Saddle Fitters to Determine the Position of the Last Thoracic Vertebra of Horses Using Palpation Techniques: A Pilot Study",
abstract = "Published guidelines indicate an English saddle tree should not extend beyond the 18th thoracic vertebra (T18). The study aimed to assess reliability of saddle fitters (SFs) to identify the T18 spinous process (SP). Part 1 investigated agreement between T18 (T18SF) as identified by three SFs using palpation and a veterinary surgeon (VS) using radiography (T18VS) in seven horses. Saddle fitter 1 and SF2 palpated the lumbosacral joint and counted cranially six SPs, whereas SF3 followed the rib curvature toward the dorsal midline. In part 2, SF1 and SF2 identified T18 by counting cranially five SPs in seven horses on two occasions. Agreement between SFs and VS was assessed using t tests and Bland-Altman plots. Interrater and intrarater reliability were estimated using intraclass correlation coefficients. In part 1, SF1 and SF2 found T18SF 4.3 cm (±4.1 and 4.0 cm, respectively) cranial to T18VS. Mean difference between T18SF3 and T18VS was 0.1 ± 4.9 cm (95{\%} CI: −9.5 cm, 9.6 cm, P =.976). When counting cranially five SPs, mean difference between T18SF1 and T18VS was −1.5 ± 3.4 cm (95{\%} CI: −8.3 cm; 5.1 cm; P =.265) and T18SF2 and T18VS was −0.3 cm ± 4.5 cm (95{\%} CI: −8.8 cm; 8.5 cm; P =.847). Interrater reliability was “good” (ICC = 0.798). Intrarater reliability was “excellent” for SF1 (ICC = 0.905) and “good” for SF2 (ICC = 0.847). Counting cranially five SPs from the lumbosacral joint, when coupled with observation of the rib position and curvature should ensure a saddle is not placed beyond T18.",
keywords = "18th rib, Lumbosacral joint, Saddle fit, Thoracolumbar",
author = "Nankervis, {Kathryn J.} and Francesca Bradley and Katherine Kosek and Dyson, {Sue J.}",
year = "2019",
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Investigation of the Reliability of Saddle Fitters to Determine the Position of the Last Thoracic Vertebra of Horses Using Palpation Techniques: A Pilot Study. / Nankervis, Kathryn J.; Bradley, Francesca; Kosek, Katherine; Dyson, Sue J.

In: Journal of Equine Veterinary Science, Vol. 77, 01.06.2019, p. 1-7.

Research output: Contribution to journalJournal Article

TY - JOUR

T1 - Investigation of the Reliability of Saddle Fitters to Determine the Position of the Last Thoracic Vertebra of Horses Using Palpation Techniques: A Pilot Study

AU - Nankervis, Kathryn J.

AU - Bradley, Francesca

AU - Kosek, Katherine

AU - Dyson, Sue J.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Published guidelines indicate an English saddle tree should not extend beyond the 18th thoracic vertebra (T18). The study aimed to assess reliability of saddle fitters (SFs) to identify the T18 spinous process (SP). Part 1 investigated agreement between T18 (T18SF) as identified by three SFs using palpation and a veterinary surgeon (VS) using radiography (T18VS) in seven horses. Saddle fitter 1 and SF2 palpated the lumbosacral joint and counted cranially six SPs, whereas SF3 followed the rib curvature toward the dorsal midline. In part 2, SF1 and SF2 identified T18 by counting cranially five SPs in seven horses on two occasions. Agreement between SFs and VS was assessed using t tests and Bland-Altman plots. Interrater and intrarater reliability were estimated using intraclass correlation coefficients. In part 1, SF1 and SF2 found T18SF 4.3 cm (±4.1 and 4.0 cm, respectively) cranial to T18VS. Mean difference between T18SF3 and T18VS was 0.1 ± 4.9 cm (95% CI: −9.5 cm, 9.6 cm, P =.976). When counting cranially five SPs, mean difference between T18SF1 and T18VS was −1.5 ± 3.4 cm (95% CI: −8.3 cm; 5.1 cm; P =.265) and T18SF2 and T18VS was −0.3 cm ± 4.5 cm (95% CI: −8.8 cm; 8.5 cm; P =.847). Interrater reliability was “good” (ICC = 0.798). Intrarater reliability was “excellent” for SF1 (ICC = 0.905) and “good” for SF2 (ICC = 0.847). Counting cranially five SPs from the lumbosacral joint, when coupled with observation of the rib position and curvature should ensure a saddle is not placed beyond T18.

AB - Published guidelines indicate an English saddle tree should not extend beyond the 18th thoracic vertebra (T18). The study aimed to assess reliability of saddle fitters (SFs) to identify the T18 spinous process (SP). Part 1 investigated agreement between T18 (T18SF) as identified by three SFs using palpation and a veterinary surgeon (VS) using radiography (T18VS) in seven horses. Saddle fitter 1 and SF2 palpated the lumbosacral joint and counted cranially six SPs, whereas SF3 followed the rib curvature toward the dorsal midline. In part 2, SF1 and SF2 identified T18 by counting cranially five SPs in seven horses on two occasions. Agreement between SFs and VS was assessed using t tests and Bland-Altman plots. Interrater and intrarater reliability were estimated using intraclass correlation coefficients. In part 1, SF1 and SF2 found T18SF 4.3 cm (±4.1 and 4.0 cm, respectively) cranial to T18VS. Mean difference between T18SF3 and T18VS was 0.1 ± 4.9 cm (95% CI: −9.5 cm, 9.6 cm, P =.976). When counting cranially five SPs, mean difference between T18SF1 and T18VS was −1.5 ± 3.4 cm (95% CI: −8.3 cm; 5.1 cm; P =.265) and T18SF2 and T18VS was −0.3 cm ± 4.5 cm (95% CI: −8.8 cm; 8.5 cm; P =.847). Interrater reliability was “good” (ICC = 0.798). Intrarater reliability was “excellent” for SF1 (ICC = 0.905) and “good” for SF2 (ICC = 0.847). Counting cranially five SPs from the lumbosacral joint, when coupled with observation of the rib position and curvature should ensure a saddle is not placed beyond T18.

KW - 18th rib

KW - Lumbosacral joint

KW - Saddle fit

KW - Thoracolumbar

U2 - 10.1016/j.jevs.2019.02.003

DO - 10.1016/j.jevs.2019.02.003

M3 - Journal Article

VL - 77

SP - 1

EP - 7

JO - Journal of Equine Veterinary Science

JF - Journal of Equine Veterinary Science

SN - 0737-0806

ER -