Learning objectives
To demonstrate specific MR imaging (MRI) findings in different types of ankle posterior impingement syndromes.
Background
Posterior impingement syndrome of the ankle is a painful mechanical restriction of motion frequently due to atypical osseous or soft tissue anatomy,
congenital or acquired.
It can also occur with normal anatomy in overuse settings,
due to forced recurrent plantar flexion of the ankle in certain leisure or professional activities,
thus being not so uncommon among young athletes or performers.
Three different types of posterior ankle impingement have been described,
with distinct etiologies and different MRI findings: posterior ankle impingement syndrome,
posteromedial ankle impingement syndrome...
Imaging findings OR Procedure Details
POSTERIOR ANKLE IMPINGEMENT SYNDROME
Pain and restriction of motion at the posterior or posterolateral aspect of the ankle,
arising during forced plantar flexion of the tibiotalar joint,
as the posterior tibia margin impinges upon the posterior talar process (positive posterior impingement test),
are the clinical findings that characterizes posterior ankle impingement syndrome.
1 The posterior ankle impingement syndrome as also been referred to as “os trigonum syndrome” and “talar compression syndrome” in the literature.
2
Posterior ankle impingement syndrome is usually associated with activities that...
Conclusion
Magnetic resonance imaging plays an important role in detecting and characterizing soft tissue or bone abnormalities in different types of posterior ankle impingement syndromes,
thus directing and helping with the patient’s treatment and rehabilitation plan.
References
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Posterior ankle impingement.
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Karasick D,
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The os trigonum syndrome: imaging features.
AJR Am J Roentgenol 1996;166:125–129
3.
Rogers J,
Dukstra P,
McCourt P,
et al.
Posterior ankle impingement syndrome: a clinical review with reference to horizontal jump athletes.
Acta Orthop Belg 2010;76:572–9.
4.
Noguchi H,
Ishii Y,
Takeda M,
et al.
Arthroscopic excision of posterior ankle bony impingement for early return to the field: short-term results.
Foot Ankle Int 2010;
31:398–403.
5.
Bencardino JT,...