EQS 370 Lecture 4
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Transcript of EQS 370 Lecture 4
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Back Continued
Lesson 4
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Objective Define common terminology used in
describing back conformation
Describe conformation principles of the
back and hindquarters
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Clarificationmeasurements
A = 1/3 B
A
B
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Wasp-waisted, Tucked up
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Topline versus Underline Horses average of 7 feet in length (poll to
point ofbuttocks)
Total length includes neck, back, croup
BUT topline often defined just as back and
croup (withers to tail)
Underline from elbow to stifle
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Topline versus Underline Topline (withers to tail) shorter than
underline
Determined by bone structure of cervicalvertebrae
Long cervical = more sloped shoulder =
topline (long or short?) Short cervical = upright shoulder = topline
(long or short?)
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Loins Between last rib and point of croup and hip
joint
Ideally = short and wide
Strong = convex (slight) muscling
Related to spring of rib
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Loins Considered long if more than 1 to 1
hand widths
Long-coupled = long back and too short of
a hindquarter; limits collection
Short-coupled (close coupled) = short
back, high propulsion and collection
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Loins Lumbosacral joint very important
Corresponds to coupling of the loin
Visualized using loin triangle
Line from hip to hip and to first lumbar
vertebrae (just behind rib)
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Miscellaneous Faults
Roached back
Loins and back join into croup
Upward or convex curve to the spine
Common fault (weak musculature)
Widows Peak
Hollow area lower than croup in loin area
Uncommon
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Croup and Quarters Look at length, width, thickness, muscle
development and slope
Croup is highest point formed by upper
pelvis
Ideal = Equal in height to withers and well
muscled
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Croup and Quarters Size and shape depends on pelvis and
sacrum
Affects tail set and athletic ability
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Croup and Quarters Built up-hill
Withers higher than croup
More weight on hind end (stifle injuries)
Built down-hill
Withers lower than croup/ high rump
More weight on forehand
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Croup and Quarters
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Croup and Quarters Ideal quarter = neither too flat or too
sloping
Measured from point of hip to point of
buttock
Not a severe shock absorber (like
forelegs)
Attachment through bone
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Croup and Quarters Longer pelvis = better speed performance
Approximately 1/3 of total body (too short
= less than 30%--some up to 35%)
Purpose = direct and positive force in
moving the body forward
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Croup and Quarters Ideal locations: point of hip in line with
croup or sl. Cranial
Look at underlying structures! Dont let tail set affect analysis of
conformation!
Length of quarter very important Slope dictates type of work
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Croup--fault Hunters Bump
Tearing of the ligaments at the SI (sacroiliac)
joint/Subluxation ofjoint
Enlargement at top of the croup
Both or one side
Mostly in jumping horses
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Goose or Steep Rump--Fault
Pelvis assumes steep, downward slope
Relatively uncommon
Mostly draft horses
Shortens backward swing
Predisposed to lower lumbarinjury
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Short Hindquartersfault Short if less than 30% of horses overall
length
Common
Minimized speed and stamina
Reduced ability to engage hindquarter
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Quarterfaults High Tail Set
Tail appears to come out ofbody level with
the top of the hip Mostly in gaited horses
Low Tail Set
Tail comes out ofbody well below hip
Associated with goose-rumped horse
Mostly draft horses
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