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Healing Process of Gastrocnemius Muscle Injury on Ultrasonography Using B‐Mode Imaging, Power Doppler Imaging, and Shear Wave Elastography
Author(s) -
Yoshida Keiichi,
Itoigawa Yoshiaki,
Maruyama Yuichiro,
Kaneko Kazuo
Publication year - 2019
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.1002/jum.15035
Subject(s) - medicine , gastrocnemius muscle , tendon , doppler imaging , elastography , ultrasonography , radiology , ultrasound , anatomy , skeletal muscle , blood pressure , diastole
Objectives Muscle injury often occurs in sports activity. To avoid reinjury, it is important to determine the appropriate period until return to play after injury. The purpose of this study was to evaluate characteristics of the healing process for gastrocnemius muscle injury by B‐mode imaging, power Doppler (PD) imaging, and shear wave elastography (SWE). Methods Twenty patients with acute calf musculotendinous injury were enrolled. Scar thickness on B‐mode imaging, new vessels according to PD grades, and SWE values in the muscle, musculotendinous junction, and tendon of the medial head of gastrocnemius were measured at 4, 8, and 12 weeks after injury. Results Scar thickness was significantly larger at 8 and 12 weeks compared with 4 weeks ( P < .01 for both). Power Doppler grades at 4 and 8 weeks were significantly higher compared with 12 weeks ( P < .01 for both). Shear wave elastographic values in the muscle on the injury side were significantly higher at 8 and 12 weeks compared with 4 weeks ( P < .01 for both), whereas those in the musculotendinous junction on the injury side were significantly higher at 12 weeks compared with 4 and 8 weeks ( P < .01; P = .01, respectively). Conclusions B‐mode imaging, PD imaging, and SWE can measure the healing process after musculotendinous injury of the gastrocnemius medial head.