Capsulolabral insertion classification

Last revised by Dr Henry Knipe on 21 Jul 2022

Capsulolabral insertion classification reflects the variation in the relationship between the glenoid labrum and the attachment of the anteroinferior shoulder joint capsule.

Classification

This classification was originally described by Mosely and Övergaard in 1962 on cadavers 3 but has since been applied to CT and MR arthrography 4,5

  • type 1: capsule inserts into the labrum proper (most common)
  • type 2: capsule inserts into the base of the labrum at the junction of the glenoid (at the glenoid fossa)
  • type 3: capsule inserts into the scapular neck (least common)

Differential diagnosis

The importance for radiologists is to not confuse normal capsulolabral insertional variation with anterior labral injuries 1,2:

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