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Fig. 2 | BMC Musculoskeletal Disorders

Fig. 2

From: A finite element model of the shoulder: application to the changes of biomechanical environment induced by postoperative malrotation of humeral shaft fracture

Fig. 2

The stress distribution was affected by postoperative malrotation of humeral shaft fracture. The right side of all pictures is anterior and the left is posterior. For normal shoulders, the stress distribution on the articular surface of the glenoid cavity after internal rotation 40° (A) and external rotation 40° (B). For normal shoulders, the stress distribution on the articular surface of the glenoid cavity (C) and humerus head (D). Under osteotomy above deltoid insertion, the stress distribution on the articular surface of the glenoid cavity (E) and humerus head (F) with 20° internal rotation of the proximal humerus and 40° external rotation of the shoulder joint. Under osteotomy below deltoid insertion, the stress distribution on the articular surface of the glenoid cavity (G) and humerus head (H) with 20° internal rotation of the proximal humerus and 40° external rotation of the shoulder. Under osteotomy above deltoid insertion, the stress distribution on the articular surface of the glenoid cavity (I) and humerus head (J) with 20° external rotation of the proximal humerus and 40° external rotation of the scapula. Under osteotomy below deltoid insertion, the stress distribution on the articular surface of the glenoid cavity (K) and humerus head (L) with 20° external rotation of the proximal humerus and 40° external rotation of the scapula

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