The interactive dog atlas · Exterior and regions · Hindlimb

Stifle (knee) genu

The stifle is the joint at the lower end of the thigh, on the hind leg. It sits above the hock, the joint that corresponds to the human ankle.

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. Stifle (knee)
  2. Thigh
  3. Lower thigh (second thigh)
  4. Hock
Stifle (knee) 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 thigh and the lower thigh, at the front of the hindlimb, close to the bottom line of the abdomen.

System
Body regions
Region
Hindlimb

What it is and what it does

The dog's knee, called the stifle, is the joint between the thigh and the lower thigh: femur, tibia and patella. It sits higher than you would think, near the flank, and bends forward, like the human knee. Don't confuse it with the hock, the joint below it, which bends backward.

Some sources wrongly call it the "femorotibiotarsal" joint; correctly, the stifle is formed by the femorotibial and femoropatellar joints, without the tarsal bones.

Worth remembering

The patella (kneecap) is one of the bones that form the stifle.

Names

  • Also called: knee, stifle joint.
  • Latin term: genu.
  • In Romanian: Genunchiul (grasetul) (Romanian page).

In the atlas lessons

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

The stifle (knee): femur, tibia and patella. It sits high up, near the flank, and bends forward.

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