Ball and socket ankle joint

Case contributed by Dr Matthew Lukies

Presentation

Ongoing ankle pain. Images uploaded to demonstrate the ball and socket joint anatomical variant.

Patient Data

Age: 35
Gender: Male
Modality: X-ray

The talocrural (ankle) joint articular surfaces have the appearance of a ball and socket joint, as opposed to the usual hinge type synovial joint.

Modality: CT

CT further demonstrates the ball and socket type synovial articulation between the hemispherical talar and congruent concave tibio-fibular articular surfaces.

Case Discussion

A ball and socket ankle (talocrural) joint is a congenital or acquired anatomical variant. Rather than the usual hinge type synovial articulation, the ankle joint forms a ball and socket articulation between the hemispherical talus and congruent concave tibio-fibular articular surfaces. If congenital, a ball and socket ankle joint is associated with other anatomical variations including tarsal coalition and short limb.

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Case Information

rID: 47502
Case created: 18th Aug 2016
Last edited: 20th Aug 2016
Inclusion in quiz mode: Included

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