Foundation · 12 min · Topic universe
Lameness and the hoof
Most dairy lameness is a foot lesion on a standing surface. Merck: claw disorders dominate — wall, sole, and interdigital skin fail in different ways.
The system
Schematic claw · not a trim map
Field notes
Short articles on this topic
Two to four minutes. The weekly unit an agent can add without rebuilding the system.
4 min · 2026-09-07
The new parlor added two hours of standing
Throughput rose. Thin soles followed the extra hold time.
Read the note3 min · 2026-09-07
Name horn or skin before you spray
Digital dermatitis and a sole ulcer fail different tissues. One protocol cannot fix both.
Read the note
The numbers
Benchmarks, not a ration
Ranges from extension and textbooks. Use them to read the cow, not to write a formula.
Where lameness lives
The foot
Merck: most cattle lameness, especially in dairy herds, originates in the foot — claw or interdigital skin.
Overview of Lameness in Cattle — Merck Veterinary ManualCommon claw
Hind lateral
Outside hind claws take more load in cattle. That is why sole ulcers cluster there — not because that claw is weaker in the abstract.
Overview of Lameness in Cattle — Merck Veterinary ManualLesion families
Horn vs skin
Claw-horn lesions (ulcer, white line) and infectious skin disease (digital dermatitis, footrot) need different levers.
Overview of Lameness in Cattle — Merck Veterinary Manual
Spot it
What you see · what it means · what to check
Check yourself
Five questions from this universe
1 of 5
According to Merck’s cattle lameness overview, where does most dairy lameness start?
Sources
- Overview of Lameness in Cattle — Merck Veterinary Manual
- Hoof Cowdemy — trim-chute craft — BarnX / Hoof Cowdemy
System figures are educational plates drawn from public-domain veterinary teaching anatomy (udder, claw, uterus, and housing relationships). They are not scanned specimens. Educational only.
Not a veterinary diagnosis, prescription, or ration formula.