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Lower limb bones in 3D

Beta

Explore the bones of both legs, from the femur and patella to the tarsal bones and toes, grouped under the textbook headings.

Beta

Interactive 3D atlas

Loads about 9 MB of 3D data the first time. Works best on a laptop or a recent phone.

Study the lower limbs in 3D

Explore the bones of both legs, from the femur and patella to the tarsal bones and toes, grouped under the textbook headings.

Turn and zoom

Drag to rotate, scroll or pinch to zoom, and tap any part to see its name and explanation.

Labels and standard views

Switch labels on or off and jump to front, back, side, top and bottom views, with an orientation cube.

Section cuts

Cut through the structure in transverse, coronal or sagittal planes and slide the cut through it.

Explode and see-through

Pull the parts apart, or make the outer layers faint to see what is inside.

Guided tour

Follow the "Bone by bone" tour one step at a time, or press Play and let the camera fly to each part.

Parts in this model

64 named parts, each with the FMA identifier the dataset gives it. Tap a group in the app to show or hide it.

  • Femur2
  • Patella2
  • Tibia2
  • Fibula2
  • Tarsal Bones14
  • Metatarsal Bones10
  • Phalanges28
  • Sesamoid bones of the foot4

Guided tour: Bone by bone (8 steps)

Each step highlights the parts it talks about. The sentence is quoted word for word from OpenStax Anatomy and Physiology 2e.

  1. 1. Femur

    It is the longest and strongest bone of the body, and accounts for approximately one-quarter of a person’s total height.
    OpenStax, 8.4 Femur

  2. 2. Patella

    A sesamoid bone is a bone that is incorporated into the tendon of a muscle where that tendon crosses a joint.
    OpenStax, 8.4 Patella

  3. 3. Tibia

    The tibia is the main weight-bearing bone of the lower leg and the second longest bone of the body, after the femur.
    OpenStax, 8.4 Tibia

  4. 4. Fibula

    The fibula does not bear weight.
    OpenStax, 8.4 Fibula

  5. 5. Tarsal Bones

    The most superior bone is the talus.
    OpenStax, 8.4 Tarsal Bones

  6. 6. Metatarsal Bones

    These elongated bones are numbered 1–5, starting with the medial side of the foot.
    OpenStax, 8.4 Metatarsal Bones

  7. 7. Phalanges

    The toes are numbered 1–5, starting with the big toe (hallux).
    OpenStax, 8.4 Phalanges

  8. 8. Sesamoid bones of the foot

    A sesamoid bone is a bone that is incorporated into the tendon of a muscle where that tendon crosses a joint.
    OpenStax, 8.4 Patella

What this model does not show

The textbook describes sesamoid bones in general, in its section on the patella, but not the sesamoid bones of the foot by name; a note in the app says so.

Where the data or the textbook has a gap, the atlas says so instead of filling it in.

Keep exploring

Questions

What can I see in the lower limbs model?

The model has 64 named parts in 8 groups: Femur, Patella, Tibia, Fibula, Tarsal Bones, Metatarsal Bones, Phalanges, Sesamoid bones of the foot.

What is the "Bone by bone" tour?

It is a guided tour of 8 steps. Each step highlights the parts it describes and shows a sentence quoted from OpenStax Anatomy and Physiology 2e. Press Play to let the camera fly to each step for you.

What is missing from the lower limbs model?

The textbook describes sesamoid bones in general, in its section on the patella, but not the sesamoid bones of the foot by name; a note in the app says so.

Where does the information come from?

The 3D shapes come from the BodyParts3D dataset (and, for the female pelvic region, the Human Reference Atlas). Every explanation is a sentence quoted word for word from the open textbook OpenStax Anatomy and Physiology 2e, with a link to its section.

Can I use it to diagnose or treat anything?

No. The atlas is for learning only. It is a beta version and has not yet been reviewed by an anatomy educator.

Credits and disclaimer

For learning only, not for diagnosis or treatment. This is a beta version and it has not yet been reviewed by an anatomy educator.

BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International. Text quoted from OpenStax, Anatomy and Physiology 2e, © Rice University, CC BY-NC-SA 4.0. Female pelvic region from the Human Reference Atlas (HuBMAP), CC BY 4.0.

This tool is free, non-commercial and made for education. It has no ads and no paid features.

All sources and licences