Limited width of bone and limited height, sinus floor is low in distal 1/2 of implant position and high in the mesial half. Prepared to about 2.2mm short of sinus floor, remainder with densan drills, entry into sinus chamber with densah drills, no evidence of sinus membrane perforation, packed about .5cc of sticky bone from 90/10 mix of mineralized cortical/xenograft, good pushback of bone, implant placed, about .25mm of implant thread exposure on buccal, concave defect, grafted buccal with the same sticky bone and collagen membrane soaked in prf fluid