[MRI of the finger ligament and tendon injuries: imaging technique and clinical application].

Objective To explore the MRI technique and the clinical application in ligament and tendons of fingers. Methods The study was reviewed and approved by an institutional review board of hospital.A total of 20 normal volunteers and 50 patients from Beijing Jishuitan Hospital between May 2012 and May 2015 with finger injuries were chosen to undergo magnetic resonance examination by using Achieva 3.0 T MR produced by Philips.Scanning from coronal, sagittal and axial view in T1-weighted and proton fat saturation sequence (PD-FS), choosing suitable parameters, in order to get clear images of finger tendons and ligaments. Results Twenty normal volunteers without tendons or ligament injuries showed homogeneous low-signal-intensity on T1-weighted and proton fat saturation sequence (PD-FS) images.In the 50 patients with finger injuries, there were 33 cases of ligament injuries, 10 cases of extensor tendon injuries and 7 cases of flexor tendon injuries. There were 8 cases of all the 50 cases combined with bone fracture.The injured ligaments and tendons became thicker and discontinued in T1WI and demonstrated heterogeneously increased signal intensity with edema in the soft tissues surrounding the injured sites in PD-FS. Conclusion MRI can demonstrate the anatomy and injuries features of ligament and tendons in fingers accurately.It is significance for the early diagnosis and treatment protocols of the ligament and tendons injuries. Key words: Magnetic resonance imaging; Finger; Tendon; Ligament; Injury