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case_images: MSK US performed on the posterior aspect of the elbow.
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case_images: The shoulder was positioned in internal rotation with the elbow flexed to ninety degrees and elevated on a bolster so that the hand could rest on the abdomen (Figure 1).
case_images: Initial MSK US long-axis view using a 10-5 MHz 38 mm linear array transducer demonstrating a thickened distal triceps tendon with a loss of normal fibrous echotexture. There is hypoechogenicity of the superficial layer of the conjoined tendon (white arrow) compared to the deep portion (orange arrow) and a loss of the normal tendon tapering conformity at the insertion on the olecranon process.
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case_images: The long-axis ultrasound view demonstrated a thickened distal triceps tendon with a loss of normal fibrous echotexture (Figure 2).
case_images: Post-injury MSK US long-axis view demonstrating a selective area of complete fiber non-visualization of the distal triceps tendon's superficial portion near its insertion on the proximal ulna (white arrow), demonstrating a high-grade partial tendon avulsion. Deep fibers of the medial triceps head (orange arrow) are preserved.
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case_images: Immediate post-injury MSK US demonstrated a selective area of complete fiber non-visualization of the distal triceps tendon's superficial portion near its insertion on the proximal ulna, indicating a high-grade partial tendon avulsion (Figure 3).
case_images: Sagittal T-2 weighted magnetic resonance image of the right elbow demonstrating a partially retracted conjoined tendon of the long and lateral heads of the triceps (arrows) and tendinosis.
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case_images: MRI two days later. MRI findings confirmed a partial triceps tendon avulsion with a partially retracted conjoined tendon of the long and lateral heads of the triceps and tendinosis (Figure 4).
case_images: Triceps tendon repair rehabilitation overview. AROM: Active Range of Motion. PROM: Passive Range of Motion. RROM: Resisted Range of Motion. UE WB: Upper Extremity Weightbearing. ACFT: Army Combat Fitness Test.
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case_images: Army Combat Fitness Test (ACFT). An overview of the rehabilitation program is summarized in Figure 5.