Quantified Mechanical Properties of the Deltoid Muscle Using the Shear Wave Elastography: Potential Implications for Reverse Shoulder Arthroplasty - Fig 4

A) SWE images of elongated deltoid muscle. The colored regions represent the SWE modulus map with the scale to the right of the figure. Arrow head represents the osteotomized region without elongation (0 mm). Arrows represent the extent of elongation (+5, +10, and +15 mm). B) A circular region of interest (ROI) was used to obtain SWE values that included the entire thickness of the muscle.</p

Distribution of SWE values obtained from deltoid muscles with and without elongation.

<p>Overall data for each muscular segments were fit using exponential growth curves with R² = 0.390 for A1, 0.558 for A2, 0.593 for M, 0.421 for P1, and 0.306 for P2.</p

Reliability of shear wave elastography (SWE).

<p>Reliability of shear wave elastography (SWE).</p

SWE values (mean [kPa] ± SD) associated with elongated conditions.

SWE values (mean [kPa] ± SD) associated with elongated conditions.</p

Deltoid muscle anatomy for positioning of ultrasound probe during SWE measurements.

<p>SWE was examined percutaneously and the values were obtained from 5 segments; anterior (A1, A2), middle (M), and posterior (P1, P2).</p

Experimental elongation of the deltoid muscle.

<p>Tensile strain in the muscle was generated with the external fixator (arrow). SWE probe was placed at the midpoint level of the deltoid muscle. SWE was examined with intact length (0 mm), and under elongated conditions (+5, +10, and +15 mm).</p

Potential of Continuous Local Antibiotic Perfusion Therapy for Fracture-Related Infections: A Case Series

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Schematic of the shoulder experimental custom-made device.

<p>Schematic of the shoulder experimental custom-made device.</p