Chotai N C, Tham S C, Wansaicheong G, Tandon A A
Department of Diagnostic Imaging, Tan Tock Seng Hospital, 11 Jalan TanTock Seng, Singapore 308433.
JBR-BTR. 2011 Jul-Aug;94(4):202-3. doi: 10.5334/jbr-btr.593.
Radial collateral ligament of the index finger is a rare ligament to rupture. X-ray is generally normal, except for subtle findings of soft tissue swelling and occasionally a small fracture. With continuous advances in imaging, ultrasound and high quality MRI allow clear depiction of small structures including joint capsule and collateral ligaments of even the small joints. This helps in definitive diagnosis and determines the extent of injury, which may affect the treatment options and final outcome. We report a rare case of index finger metacarpo-phalangeal joint radial collateral ligament tear. The subtle X-ray abnormality was chased on ultrasound and the diagnosis was proposed on ultrasound and later confirmed on MRI. We also discuss the imaging findings of this rare entity.
食指桡侧副韧带断裂是一种罕见的韧带损伤。X线检查通常无异常，仅可见软组织肿胀的细微表现，偶尔可见小骨折。随着影像学的不断发展，超声和高质量MRI能够清晰显示包括关节囊和即使是小关节的侧副韧带在内的小结构。这有助于明确诊断并确定损伤程度，而损伤程度可能会影响治疗方案和最终结果。我们报告一例罕见的食指掌指关节桡侧副韧带撕裂病例。通过超声追踪X线的细微异常表现，在超声上提出诊断，随后经MRI证实。我们还讨论了这种罕见疾病的影像学表现。
