The tibialis anterior tendon is the largest tendon in the anterior compartment, passing beneath the superior and inferior extensor retinacula in its own most medial compartment before crossing the midfoot to insert on the medial and plantar surfaces of the medial cuneiform and first metatarsal base. It is the primary ankle dorsiflexor and the tendon responsible for foot clearance during swing phase of gait, and its insertion also helps support the medial column. Its rupture, while uncommon, produces a significant foot drop deformity that is often initially mistaken for a common peroneal nerve palsy.
| Muscle | |
|---|---|
| Attachment | Medial and plantar surfaces of the medial cuneiform and base of the first metatarsal |
Dorsiflexion and inversion of the foot during swing phase of gait
Tibialis anterior tendon rupture occurs predominantly in older men, often after a minor stumble and sometimes with steroid use, diabetes or inflammatory arthritis, usually in the distal tendon near the inferior extensor retinaculum or insertion. It produces a painless or minimally painful foot drop and a steppage gait that is initially assumed to be neurological. The diagnosis is confirmed by the absent tendon contour and a gap on the dorsomedial foot during attempted dorsiflexion. Unlike common peroneal nerve palsy, toe extension strength is preserved because EHL and EDL are intact. Early primary repair is preferred in active patients, while delayed presentations need reconstruction with an EHL transfer or tendon graft.
Spontaneous or traumatic tendon rupture producing foot drop without neurological deficit, confirmed by absent tendon on dorsal foot palpation and MRI, managed with surgical repair in active patients.
Overuse degeneration producing dorsal ankle and medial midfoot pain reproduced by resisted dorsiflexion and worsening with prolonged walking, common in middle-aged hikers with heavy boots.
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.
