A 3D-CT scan study of the humeral and glenoid planes in 150 normal shoulders

作者：De Wilde Lieven^*; Defoort Saartje; Verstraeten Tom R G M; Speeckaert Wendy; Debeer Philippe

来源：Surgical and Radiologic Anatomy, 2012, 34(8): 743-750.

DOI：10.1007/s00276-011-0836-4

• 3D-CT scan
• Glenohumeral relationship
• Scapular plane
• Glenoid plane
• Humeral plane

The purpose of the study was to determine the normal three-dimensional relationship between the humeral and the glenoid plane of the individual patient. We measured the three-dimensional angle between the glenoid plane and the humeral plane (glenohumeral angle, A degrees GH) and the angle between the plane of the scapula and the plane of the glenoid (glenoscapular angle, A degrees GS) with the patient in a standardized position to the CT scan gantry. We hypothesized that a normal distribution with a small variation would exist for both angles. %26lt;br%26gt;A total of 150 conventional CT scans of normal shoulders from patients aged between 18 and 80 years were examined and three-dimensional reconstructions were derived from it. The descriptive statistics and the variability of A degrees GH and A degrees GS were determined. %26lt;br%26gt;The mean A degrees GH was 57.9A degrees, and the mean A degrees GS was -3.77A degrees. The overall reliability of the measurement was good. Descriptive statistics of this study confirm the normal distribution and a narrow variation of both parameters. %26lt;br%26gt;This is the first study to determine the normal 3D relationship between the humerus and the glenoid (A degrees GH). This new three-dimensional anatomical information of the normal glenohumeral relationship and glenoid can be used to distinguish normal from pathological anatomy, as well as alternative surgical guidance especially in bony deficient glenoids. %26lt;br%26gt;Level of Evidence Level II Anatomical Study.

• 出版日期2012-10