Objective To measure the glenoid morphology of the shoulder, analyze the correlation between the data and to guide the prediction of glenoid defects. Methods A total of 50 pairs (100 cases) of shoulder specimens were collected from the anatomy department of Qingdao University. The specimens were divided into groups according to the left and right sides after numbering. The longitudinal diameter of the glenoid and the transverse diameter of the glenoid were measured respectively. Then the statistical analysis was conducted. Results In the 100 scapular specimens, the mean values of the data were as followings: longitudinal diameter of the glenoid cavity was (35.46±3.29) mm and transverse diameter of the glenoid cavity was (26.11±3.20) mm, respectively. The average values of the left and right side were as followings: longitudinal diameter on the left side of the glenoid cavity was (35.28±3.81) mm; the right side was (35.24±3.31) mm, transverse diameter on the left side of the glenoid cavity was (25.83±3.18) mm, and the right side was (26.38±3.23) mm. There was a correlation between transverse diameter on the left side of the glenoid cavity and transverse diameter on the right side of the glenoid cavity (P<0.05, r=0.882, R2=0.777). The linear relation was: y (transverse diameter on the right side of glenoid cavity) = 2.907+0.869x (transverse diameter on the left side of the glenoid cavity). There was a correlation between the longitudinal and transverse diameter of the glenoid joint (P<0.05, r=0.810，R2=0.657). The linear relationship was y (transverse diameter of the glenoid joint)= -1.816+0.787x (longitudinal diameter of the glenoid joint). Conclusions There are positive correlations between the longitudinal diameter of the glenoid joint and the transverse diameter of the glenoid joint, between transverse diameter on the left and right side of the glenoid cavity. The correlation can reduce the error of artificial subjective measurement of the best-fit circle diameter of the glenoid cavity, and can predict the area of anterior glenoid bone loss before clinical operation and improve the prognosis.
Key words
Scapula /
Glenoid bone loss /
Measurement /
Best-fit circle /
Dislocation of shoulder joint
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