The interactive dog atlas · Exterior and regions · Hindlimb

Hock tarsus

The hock is the joint of the hind leg that corresponds to the human ankle. It sits below the stifle, above the paw.

Educational material, not a diagnostic tool. Written by the Mantrailing România team from veterinary sources we read. Updated 14.11.2026.

Dog in left lateral view — exterior, muscles, skeleton and organs Vector study after the Ellenberger, Baum and Dittrich plates: a standing dog, head to the left, deep chest and digitigrade limbs. The four layers use the same contour: exterior with body regions, superficial muscles, skeleton and organs.
  1. Hock
  2. Lower thigh (second thigh)
  3. Hind paw
  4. Stifle (knee)
Hock on the atlas drawing, "Exterior and regions" layer, with the neighbouring structures. Left lateral view, after the Ellenberger, Baum and Dittrich plates.

Where it is

Between the lower thigh and the hind paw; the "reversed" joint in the lower part of the hindlimb.

System
Body regions
Region
Hindlimb

What it is and what it does

The hock is the joint between the lower thigh and the hind paw, the counterpart of the human ankle. It bends backward, the opposite of the stifle, which is why it looks like a "reversed knee". The point of the hock, the bump at the back, is the calcaneus, the bone to which the Achilles tendon attaches.

The tarsus has seven bones. "Hock" comes from show-ring and horse vocabulary; in anatomy the region is called the tarsus.

Worth remembering

The point of the hock is a projection of the calcaneus, one of the bones of this joint.

Names

  • Also called: tarsal joint, tarsus.
  • Latin term: tarsus.
  • In Romanian: Jaretul (Romanian page).

In the atlas lessons

Body regions: what is where (4 min):

The hind limb: thigh, stifle (knee), lower leg, hock and paw. The stifle bends forward, the hock backward.

Where is the knee? Stifle, hock, elbow, carpus (4 min):

The hock: the tarsal joint, the equivalent of the ankle. Its point is the calcaneus, where the Achilles tendon attaches.

Questions from the atlas

"Find it on the drawing" questions whose answer is this structure; in the atlas you will find them in the question bank and in the lessons.

Guides it appears in