Anterior and Posterior Ankle Impingement

Statistical shape model of the talus bone morphology: A comparison between impinged and nonimpinged ankles

“…6,8,9 In the anterior bony ankle impingement, the pain occurs during dorsiflexion of the foot, when osteophytes on the talar neck or distal tibia entrap the soft tissues in the anterior part of the ankle joint or when these osteophytes undergo irritation because they collide with each other or receive an external force. 2,10 In posterior bony ankle impingement, on the other hand, obstruction and pain happen when during plantarflexion of the foot some soft tissues get squeezed in the area between the tibial rim or calcaneus and the bony excess of the posterior side of talus, including os trigonum and Steida's process, or when an action like a plantarflexion or an external force affects the posterior process of the talus. 2,9,11 Diagnosis of bony ankle impingement is focused on the size and location of these bony processes or osteophytes.…”

“…2,10 In posterior bony ankle impingement, on the other hand, obstruction and pain happen when during plantarflexion of the foot some soft tissues get squeezed in the area between the tibial rim or calcaneus and the bony excess of the posterior side of talus, including os trigonum and Steida's process, or when an action like a plantarflexion or an external force affects the posterior process of the talus. 2,9,11 Diagnosis of bony ankle impingement is focused on the size and location of these bony processes or osteophytes. 2,10 In addition surgical treatments of ankle impingement aim to resect these osteophytes and bony excesses to improve functionality and relieve pain.…”

“…Ankle impingement syndrome can be described as abnormal entrapment or contact of structures in anterior or posterior areas of ankle joint during dorsiflexion or plantarflexion of the foot and can cause pain, stiffness, and limited range of motion 1–3 . Based on pathoanatomic features developing ankle impingement, it is divided into bony ankle impingement (also known as ankle impingement exostosis 4,5 ) and soft tissue ankle impingement 6,7 .…”

“…In clinical examinations, simple palpation may provide detection of prominent osteophytes or bony excess, but it engages a high rate of false‐negative results 2,13 . This necessitates further support from medical imaging modalities like radiography and computed tomography (CT) 2 .…”

“…In clinical examinations, simple palpation may provide detection of prominent osteophytes or bony excess, but it engages a high rate of false‐negative results 2,13 . This necessitates further support from medical imaging modalities like radiography and computed tomography (CT) 2 . Radiographs, while useful for diagnosis of bony ankle impingement, provide a reduced understanding of bone anatomy due to their two‐dimensional (2D) nature and also might not always be sufficient for the assessment of bone abnormalities in their standard views due to the overlapping phenomenon of tibia and talus 2,14 .…”