The JBJS Quiz of the Month is a collection of 10 relevant questions from each orthopaedic subspecialty. The questions are drawn from JBJS Clinical Classroom, which houses over 4,500 questions and 3,100 learning resources. Take the Quiz to see how you score against your peers!

NOTE: This quiz does not earn users CME credits. The questions must be answered within Clinical Classroom to earn CME credits.

A 58-year-old male patient sustains a high-energy proximal humerus fracture. When considering open reduction and internal fixation for this patient, which of the following findings would be an indication for synthetic or allograft supplementation of the proximal humerus metaphysis?

    • Loss of medial calcar support and severe comminution
    • A metaphyseal or intramedullary device may be necessary to restore stability of the medial calcar
    • Initial displacement of the greater tuberosity
    • Sutures in the rotator cuff are recommended for tuberosity fixation but do not require supplementation of the proximal humerus metaphysis
    • Concomitant ipsilateral glenoid fracture
    • Supplementation is typically required for medial calcar comminution
    • Ipsilateral femur fracture
    • Supplementation is typically required to support the medical calcar when there is comminution