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Ultrasound assessment of an isolated rupture of the medial bundle of a bifid distal biceps tendon
Mark Charnock
Department of Radiology, Sheffield Teaching Hospital NHS Foundation Trust, Northern General Hospital, Sheffield, UK
Correspondence Address:
Mark Charnock,
Sheffield Teaching Hospital NHS Foundation Trust, Northern General Hospital, Herries Road, Sheffield, S5 7AU
UK
 Source of Support: None, Conflict of Interest: None
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This case study describes a patient with a clinically ruptured distal biceps tendon, with ultrasound detecting an isolated rupture of the medial bundle of a bifid distal biceps tendon. A 45-year-old male presented to the accident and emergency department with a week-old history of a right elbow injury. The ultrasound scan demonstrated a hypoechoic, corrugated distal biceps tendon with a tendon stump close to the radial tuberosity insertion in keeping with a rupture. However, a small caliber accessory or bifid distal biceps tendon was also identified and was intact. Typically, distal biceps tendon ruptures occur following a traumatic event with most detected clinically although imaging is required to confirm the diagnosis. Ultrasound is utilized to assess these injuries, and several different techniques or approaches are described in the literature. A combination of these approaches is required to make an accurate diagnosis. Detection of bifid distal biceps tendons is important for patient management, especially if a surgical repair is considered. This case highlights the anatomical variant of a bifid distal biceps tendon, which was ruptured clinically. The ultrasound diagnosis of distal biceps tendon ruptures can be challenging, especially when there is limited tendon retraction. This case also demonstrated the importance of dynamic ultrasound in the assessment of tendon ruptures.
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