Final answer:
A varus collapse following a proximal humerus plating can be mitigated by using locking plates or intramedullary fixation, which provide better stabilization and are effective particularly in osteoporotic bone.
Step-by-step explanation:
Varus collapse following a proximal humerus plating can be reduced by including a construct that provides better stabilization. This typically involves the use of locking plates which are designed to maintain the position of the bone fragments and prevent secondary displacement, including varus deformity. Locking plates function by securely fixing the screws into the plate, thereby preventing them from angling and loosening over time which could contribute to a varus collapse. This method is particularly beneficial in osteoporotic bone where traditional screws may not hold well. Another technique that can be utilized is the use of intramedullary fixation, which provides stability by placing a rod within the marrow canal of the humerus, sometimes supplemented with locking screws to secure the rod to the bone.