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Muscle, Ligaments and Tendons Journal

Perivascular Adductor Longus muscle injury: Ultrasound and Magnetic Resonance Imaging findings

Original Article, 376 - 387
doi: 10.11138/mltj/2017.7.2.376
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Abstract
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Background: Muscle injuries affecting the Adductor Longus are not all localised at the level of the proximal myotendinous junction and enthesis.
Thus, the main purpose of this article was to raise awareness of the imaging features of the Perivascular Adductor Longus muscle injury, which currently remains widely under-recognised.
Methods: The ultrasound (US) and Magnetic Resonance imaging (MRI) images of five professional football players were retrospectively reassessed to identify distinctive imaging details of the Perivascular Adductor Longus muscle injury.
Complementary information regarding the traumatic mechanics is presented as well.
Results: All the players presented similar US images in the first seventy-two hours: loss of ecostructural integrity of the lateral epimysium, in proximity to the femoral vessels, and perilesional oedema were the main pathological findings. The injury lead to the formation of a hypoechoic, intramuscular haematoma in three of the subjects. Anyway, this was detectable only after five days, or later.
Moreover, MRI sequences showed long-standing haematoma-related signal alterations which were also observable at three months after trauma. Typically, kicking was the traumatic motor task.
Conclusions: The main practical value of this technical note is to compensate for the lack of studies concerning the Perivascular Adductor Longus muscle injury. Promptly identifying its typical imaging features is crucial in order to establish the correct diagnosis and to implement a highly specific rehabilitative program. Level of evidence: V.

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