Page 1171 - Adams and Stashak's Lameness in Horses, 7th Edition

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FROG: Central Sulcus – Anterior Frog Length – Frog Width HEELS: Medial & Lateral BARS: Medial & Lateral TOE: Length
The frog will receive a total of 3 grades. The Quality of the Central Sulcus, 10–15% (about 1/4 0–2 size foot) The Bars, Heels & Toe will each receive 1 Grade. The measurements X = Distance from WPOTF to the Back of the frog
the Anterior Length of the Frog, & the width of the frog. Each grade can tell you a lot listed are applicable for average size feet (Size 0–2), Slight adjustments X X 0 –1/4
0 A Frog Width In general, a good Central Sulcus (CS) is Open, Wide & Heel Ends 10–15% Forward from the Back of
may need to be accounted for with smaller and larger foot sizes.
about where needs of the foot are being met and where they are becoming distorted.
the Central Sulcus (about 1/4 on 0–2 size foot)
Round at the Bottom.
frog has a nice
rounded apex. The
the Plane of the Frog Commissure
more pointed it gets, Frog Length = CS Length (A) Midline of the Bar is Between 3/8 & 1/2 from
the more stretched
A it has become. Frog Width = 1/4 –1/2 Greater than 3/8 –1/2 Toe Length is Equal or 1/4 Longer than Length
from WPOTF to the Back of Frog
A = CS Length Frog Length the CS Length (A)
1/4 +
X X 1/2
Heel Ends 20% Forward from the Back of the
1 A Frog Width Crease at the Bottom. Midline of the Bar is 3/4’’ from the Plane of the
Central Sulcus
Central Sulcus (CS) is Open, with a
Frog Commissure
Frog Length = Slight Longer than the
Toe Length is 1/2’’ Longer than the Length from
WPOTF to the Back of Frog
Frog Width = Slightly Greater or (+) to
A + CS Length (A) 20% 3/4 *Automatic Downgrade 1 Point if the Bars contain Fractures,
+/–
Black Tracts or Bruises
A = CS Length Frog Length the CS Length (A) Heel Ends About 40% Forward from the Back X X 3/4
2 A Frog Width Central Sulcus (CS) is Narrow, with a of the Central Sulcus (just under half way)
Crease at the Bottom.
Midline of the Bar is 1 from the Plane of the
Frog Commissure
Frog Length = 25% Longer than the CS
from WPOTF to the Back of Frog
A 25% Length (A) 40% 1 Toe Length is 3/4 Longer than the Length
Frog Width = Slightly Less or Equal
=/–
A = CS Length Frog Length (=/–) to the CS Length (A) *Automatic Downgrade 1 Point if the Bars contain Fractures,
Black Tracts or Bruises.
X X
Heel Ends 60% Forward from the Back 1
3 A Frog Width with a Deep Crease at the Bottom. Midline of the Bar is 1.25’’ from the Plane of the
of the Central Sulcus (Just over half way)
Central Sulcus (CS) is mostly Closed
Frog Commissure
Frog Length = 50% Longer than the CS
A
WPOTF to Back of Frog
A = CS Length Frog Length 50% Length (A) 1 1/4 Toe Length is 1 Longer than the Length from
Frog Width = 10%–20% Narrower than
the CS Length (A) 60% *Automatic Downgrade 1 Point if the Bars contain Fractures,
Black Tracts or Bruises
10–20%
Heel Ends About 80% Forward from the Back X X 1 1/4
4 A Frog Width Accessible or Distinguishable Bottom Midline of the Bar is Greater than 1.25 from
of the Central Sulcus
Central Sulcus (CS) is Closed with No
the Plane of the Frog Commissure
Frog Length = 75% Longer than the CS
A
Deepest Part of the Commissure is Distorted
A = CS Length Frog Length 75% Length (A) Fractures Bars Contain Fractures, Black Tracts & the
1 1/4 +
Frog Width = 25%– 35% Narrower than Distortion Toe Length is 1 1/4 Longer than the Length
the CS Length (A) 80% from WPOTF to the Back of Frog
25–35%
Heel Ends 100% Forward, or at the X X 1 1/4 +
5 A Frog Width A A or 100% Central Sulcus (CS) is Closed, Painful Fractures Midline of the Bar is Greater than 1.25 from
Front of the Central Sulcus
and Possibly Diseased (Thrush)
the Plane of the Frog Commissure
Frog Length = 100% (2 Times) Longer
Bars are Fractured, Bruised, have Black Tracts &
Frog Length
than the CS Length (A)
A = CS Length
Bruising
Frog Width = 40% or More Narrower 1 1/4 + the Deepest Part of the Commissure is Distorted
Toe Length is More Than 1 1/4 Longer than
+40%
than the CS Length (A) 100% + Distortion the Length from WPOTF to the Back of Frog
Figure 11.58. Detailed description of the grading protocol that is used for the frog, protocol is not intended to diagnose any lameness, nor is it intended as instructional
bars and heel, and the toe of the equine foot by the ELPO. (Disclosure: The information guidelines for trimming or shoeing. For details on hoof care guidelines, look at the “ELPO
presented in this evaluation protocol are only general guidelines designed for equine Hoof Trimming & Shoeing Protocols” offered by the Equine Lameness Prevention
professionals as a means to have a standardized formula for recognizing common hoof Organization, Inc. [www.LamenessPrevention.org].)
distortions that exist in many feet with basically “normal” conformations. This evaluation
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