High-resolution US of non-traumatic recurrent dislocation of the peroneal tendons: a case report

Abstract

We report the case of a young girl with recurrent sharp pain in the outer aspect of the ankle. She had no previous trauma. High-resolution US (HRUS) showed a complete intermittent dislocation of the peroneal tendons. Post-traumatic chronic peroneal instability is quite common, whereas complete dislocation is rare. HRUS is an important adjunct to clinical examination and radiographic evaluation of patients with musculoskeletal disorders of the foot and ankle [1]. This paper reports its value in non-traumatic recurrent dislocation of the peroneal tendons.

Isolated Dislocation of the Peroneus Longus Tendon Over the Calcaneal Tubercle in an Ice Skater

“…The use of diagnostic ultrasonography to evaluate tendons around the foot has been described previously 5,17,18 . Neustadter et al 17 studied thirteen patients who had dislocation of the peroneal tendon over the lateral malleolus.…”

Peroneal Tendons Subluxation

“…Dynamic high resolution ultrasound is effective in demonstrating subluxation and associated tendon splits. 40,41 Computed tomography may be helpful in assessing the retrofibular groove before, and postoperatively in, groove deepening procedures. 42 Static MRI is useful in grading SPR injuries, identifying splits in the peroneal tendons, diagnosing abnormality in the lateral collateral ankle ligament complex, and demonstrating abnormalities of the fibular groove (flat, convex, or irregular).…”

Paediatric ultrasound. Part 2: Other applications

“…Ultrasound is an accurate means of identifying the displacement of tendons. Dynamic examination may enhance detection of intermittent subluxation and assess whether spontaneous reduction is possible [167]. Peritendinous effusion is often associated.…”