Magnetic resonance imaging findings in anterolateral impingement of the ankle |
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Authors: | LK Jordan III C A Helms A E Cooperman K P Speer |
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Institution: | (1) Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA, US;(2) Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA, US;(3) Box 3808, Duke University Medical Center, Durham, NC 27710, USA, US |
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Abstract: | Objective. To demonstrate the MR imaging findings of anterolateral impingement (ALI) of the ankle.
Design and patients. Nine patients with a history of ankle inversion injury and chronic lateral ankle pain were imaged with MR imaging, and the
findings correlated with the results of arthroscopy. Three additional patients with clinically suspected ALI of the ankle
were also included. Ankle MR imaging studies from 20 control patients in whom ALI was not suspected clinically were examined
for similar findings to the patient group.
Results. MR imaging findings in the patients with ALI included a soft tissue signal mass in the anterolateral gutter of the ankle
in 12 of 12 (100%) cases, corresponding to the synovial hypertrophy and soft tissue mass found at arthroscopy in the nine
patients who underwent arthroscopy. Disruption, attenuation, or marked thickening of the anterior talofibular ligament was
seen in all cases. Additional findings included signs of synovial hypertrophy elsewhere in the tibiotalar joint in seven of
12 patients (58%) and bony and cartilaginous injuries to the tibiotalar joint in five of 12 (42%). None of the control patients
demonstrated MR imaging evidence of a soft tissue mass in the anterolateral gutter.
Conclusions. ALI of the ankle is a common cause for chronic lateral ankle pain. It has been well described in the orthopedic literature
but its imaging findings have not been clearly elucidated. The MR imaging findings, along with the appropriate clinical history,
can be used to direct arthroscopic examination and subsequent debridement.
Received: 22 July 1999 Revision requested: 20 September 1999 Revision received: 7 October 1999 Accepted: 8 October 1999 |
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Keywords: | Ankle injuries Ankle MR Athletic injuries |
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