has part has part has_part characteristic of part of has modifier abnormal hindlimb morphology abnormal quadriceps morphology abnormal quadriceps muscle morphology 2010-07-12T02:23:53Z abnormal quadriceps femoris morphology csmith any structural anomaly 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 MPheno.ontology MP:0010225 abnormal quadriceps extensor morphology abnormal quads morphology abnormal limb muscle morphology morphology abnormal quadriceps femoris