Pelvic Girdle and Lower Limbs Questions

Human Anatomy

What bones make up a coxa

• illium

• ischium

• pubis

differences between female and male pelvis

female

• more flared iliac bones

• greater pubic arch angle

• more distance between ischial spines and ischial tuberosities

• shorter sacral curvature

• pelvic cavity wider in all diameters

• lighter and more delicate bones

• bones show less evidence of muscle attachment

changes in trabecular and compact bone w/ ageing

trabecular bone

• thins w/ age

• porosity increases → weakens structure

compact bone

• loss starts after trabecular bone starts deteriorating

• osteons in compact bone disappear as new osteons built next to them

• as person ages osteons can coalesce → forms gaps in bone & weakens the structure

factors to preserve skeletal health

• avoid falls

• take calcium supplements

• get enough vitamin D

• avoid carbonated beverages

• get regular exercise

why do elderly people often develop a bowed back & appear to shrink

• deterioration of trabecular bone that makes up majority of the vertebrae

• degeneration of the intervertebral discs