Ultrasound Detection of Hidden Bennett Fracture

Intra-articular fractures of the base of the first metacarpal, known as Bennett fractures, often lead to dislocation, which makes prompt diagnosis crucial to prevent long-term complications like degenerative joint disease and chronic hand dysfunction. Conventional X-rays are typically used to identify these fractures. However, we present a case of a 62-year-old man where ultrasound (US) was key in detecting a Bennett fracture after a fall, despite standard radiographs initially appearing normal. In this case, a careful ultrasound examination of the musculoskeletal system raised strong suspicion of a Bennett fracture. Following the US findings, computed tomography (CT) was used, ultimately confirming the fracture with a clear image. This case emphasizes the role of ultrasound as a valuable tool for detecting fractures that might go unnoticed on standard X-rays. In particular, ultrasound can serve as a critical imaging modality in post-traumatic evaluations, highlighting fractures not visible on radiographs and supporting faster, accurate diagnoses. As seen here, incorporating bone assessment into routine musculoskeletal ultrasound exams, especially in cases involving recent trauma, enhances diagnostic precision and may expedite the identification of injuries that otherwise might go undetected. This approach can be pivotal for patient outcomes, as early detection facilitates timely intervention and can potentially reduce the risk of complications, thus preserving joint function and overall hand mobility.