Muscle weakness Limb-girdle muscle weakness Muscular weakness, limb-girdle Muscle weakness, limb-girdle UMLS:C1858127 Limb girdle weakness HP:0008971 HP:0003325 Weakness of the limb-girdle muscles (also known as the pelvic and shoulder girdles), that is, lack of strength of the muscles around the shoulders and the pelvis. Abnormal skeletal muscle morphology Abnormality of limbs