Fig 1.
The anterolateral surface of the humerus (green shaded area) shows the area in which the plate can be applied.
Fig 2.
The mid-anterior aspect of the humerus (brown shaded area) shows the area in which the plate can be applied.
Fig 3.
Anterior view of a right upper arm, with an imaginary fracture line at the midpoint between the tip of the greater tuberosity and the lateral epicondyle (white dotted line).
The distances were measured from the lateral epicondyle to the tip of the greater tuberosity of the humerus (entire humeral length; black arrow) and the center of each screw hole (orange arrow). The relative distance ratio of each screw hole was calculated based on the distance from the lateral epicondyle to each screw hole (orange arrow) and the entire humeral length (black arrow).
Fig 4.
Posterior view of a right upper arm; the distances from the screw holes to the neurovascular structure were measured in the longitudinal plane (green line) and closest plane (yellow line).
Fig 5.
Anterior view of a right upper arm, showing an imaginary fracture line at the midpoint between the tip of the greater tuberosity and the lateral epicondyle (white dotted line), indicating the risk of iatrogenic radial nerve and/or profunda brachii artery injury of each screw hole.
Table 1.
The average distances of the ‘risky’ screw holes to the radial nerve and profunda brachii artery in the longitudinal plane and closest plane (Mean ± SD).