decreased quadriceps weight 2010-07-12T02:37:02Z MP:0010227 MPheno.ontology csmith decreased quadriceps extensor weight decreased quadriceps femoris weight decreased quadriceps muscle weight decreased quads weight reduced quadriceps extensor weight reduced quadriceps femoris weight reduced quadriceps muscle weight reduced quadriceps weight reduced quads weight reduction in the weight of the group of four muscles (rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis) which extend down the front of the thigh and are the major extensors of the knee joint abnormal quadriceps weight