Overstuffing in resurfacing hemiarthroplasty is a potential risk for failure

Figures

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  Fig. 1. Radiograph of a right shoulder showing the assessment of the critical shoulder angle

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  Fig. 2. Radiograph of the right shoulder before and 6 months after implantation of the resurfacing hemiarthroplasty. The modified length of gleno-humeral offset is measured by drawing a line from the top to the bottom of the glenoid (a). The cortex of the humerus was drawn. A parallel line was shifted till it touched the most lateral cortex of the greater tubercle (b). The distance was marked as (c)

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  Fig. 3. 1 Radiograph of a right shoulder. Anatomical circle with center of rotation (blue) and postoperative center of rotation (yellow). The distance in millimeters between the both centers was measured. 2 Radiograph of a right shoulder, demonstrating the anatomical circle (blue) and the implant matched circle (yellow) and the 4 quadrants. LS, lateral superior; MS, medial superior; MI, medial inferior; LI, lateral inferior