Viewing 1 reply thread
  • Author
    • #40082
      Sandra St Cyr

      Hi Steve,
      how would you describe the mechanism involved in snapping IP tendon?

      From what I understand, it is no longer considered a snapping at the Iliopectineal eminence, but rather the mfi and tendon location. Still trying to wrap my brain around it.


    • #40099
      Stephen Bird

      Hi Sandy,

      Yes it is a dynamic relationship between the medial fibres of iliacus muscle belly and the iliopsoas tendon.

      In all people if you watch while you scan in the short axis of iliopsoas at the level of the iliopectineal eminence you will observe the following.

      In neutral you will see the tendon on the bone and the MFI anterior to it

      When you perform hip flexion and abduction the iliopsoas tendon leaves the bone and rotates around the MFI muscle belly until it sits on top of the muscle belly.

      When you then perform hip extension and adduction back to the neutral position this relationship is reversed.

      In some people the reversal does not go smoothly and some MFI muscle is trapped between the tendon and the iliopectineal eminence. When this trapped muscle is displaced the tendon snaps down on the iliopectineal eminence causing the snap.

      It is a dynamic process.

      You can actually scan easily while performing the dynamic movements as you are scanning above the groin crease.


Viewing 1 reply thread
  • You must be logged in to reply to this topic.

© 2024 Bird Ultrasound | Website by What About Fred

Stay in Touch


Log in with your credentials

Forgot your details?