2023, Vol. 27 ›› Issue (31): 4965-4970

Quantitative evaluation of bone structure changes in femoroacetabular impingement syndrome by magnetic resonance imaging

Li Xiaojuan1, Zhang Yuanzhi2, Yang Xiaoguang3, Gao Yang3, Wu Qiong3

1Health Management Service Center of Inner Mongolia Autonomous Region, Hohhot 010010, Inner Mongolia Autonomous Region, China; 2Department of Orthopedics, 3Department of Radiology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China

Received:2022-09-05 Accepted:2022-11-08 Online:2023-11-08 Published:2023-01-31
Contact: Zhang Yuanzhi, MD, Chief physician, Department of Orthopedics, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China Wu Qiong, MD, Chief physician, Department of Radiology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
About author:Li Xiaojuan, Master, Associate chief technician, Health Management Service Center of Inner Mongolia Autonomous Region, Hohhot 010010, Inner Mongolia Autonomous Region, China
Supported by:
Scientific and Technological Achievements Transformation Project of Inner Mongolia Autonomous Region, No. CGZH 2018148 (to ZYZ); Science and Technology Planning Project of Inner Mongolia Autonomous Region, No. 201802157 (to ZYZ); “Zhiyuan” Talent Fund Project of Inner Mongolia Medical University, No. ZY0120011 (to ZYZ): Science and Technology Million Project of Inner Mongolia Medical University, No. YKD2017KJBW(LH)031 (to WQ)

Abstract: BACKGROUND: As the main imaging method of femoroacetabular impingement syndrome, MRI can clearly show the structure of hip joint soft tissue. With the help of three-dimensional visualization technology, MRI can be used for three-dimensional imaging of bone tissue. There is currently no report on quantitative evaluation of femoroacetabular impingement syndrome using three-dimensional hip MRI.
OBJECTIVE: Three-dimensional imaging was performed on MRI images of patients with femoroacetabular impingement syndrome, and EE angle and α angle were measured based on three-dimensional images to quantitatively evaluate bone structure changes.
METHODS: Totally 24 cases of femoroacetabular impingement syndrome were selected. They were 12 males and 12 females, aged from 36 to 53 years (average, 43.47 years); height from 158 to 190 cm (average, 172.46 cm); weight from 62 to 87 kg (average, 77.79 kg). Each MRI was completed on a GE Discovery MR 750, 3.0T system with the patients in the supine position. An axial three-dimensional gradient-echo was performed. Thickness: 0.6 mm, X/Y resolution: 0.365 mm/0.365 mm. Raw T2 sagittal data in .dicom format were input into Materialise Mimics Innovation Suite 16.0 software. Semi-automatic segmentation method was adopted to visualize and analyze the collision area.
RESULTS AND CONCLUSION: (1) The α angle (62.86±6.36)° and EE angle (13.68±3.42)° could be accurately measured by three-dimensional reconstruction of MRI images. The α angle obtained from three-dimensional MRI images of hip joint could effectively reflect femoroacetabular impingement syndrome. (2) The three-dimensional image of hip MRI stereoscopically displays the morphology of hip cartilage and bone, provides a reference for the choice of treatment options, and has development and application prospects.

Key words: magnetic resonance imaging, femoroacetabular impingement, visualization, EE angle, α angle, three-dimensional imaging

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