The superior peroneal retinaculum forms the fibrous roof of the retromalleolar groove, constraining the peroneus longus and brevis in their shared synovial sheath posterior to the lateral malleolus. Acute ankle inversion injuries can avulse the superior peroneal retinaculum from the fibula, allowing the peroneal tendons to sublux anteriorly over the lateral malleolus.
| Location | Lateral ankle, behind the lateral malleolus |
|---|---|
| Boundaries |
|
| Contents |
|
Holds the fibularis (peroneal) tendons in their groove behind the lateral malleolus; if it is torn or stripped from the fibula the tendons can dislocate forward.
Peroneal tendon subluxation from SPR avulsion produces a painful snap over the lateral ankle with the tendon visibly jumping over the fibula during active dorsiflexion-eversion. Acute SPR repair provides the best results. Chronic subluxation requires groove-deepening procedures and retinaculum reattachment.
SPR avulsion allowing peroneal tendon displacement over the lateral malleolus during ankle motion managed with acute retinaculum repair or chronic groove-deepening procedure.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
