1.Healing of # of bone is affected by
a.Micromovement
b.Muscle interposition
c.Hypoxia
d.Bone fragments
e.All of the above
Micromovement induces callus formation.
Muscle interposition (soft tissue interposition), hypoxia and free bone fragments impair callus formation and fracture healing.
2.Non union ia a complication of
a.Scaphoid #
b.Colle’s #
c.Inter trochanteric # of hip
d.Supracondylor # of the humerus
Common sites of non-union are neck °Henna, scaphoid, lower third of tibia, lateral condyle of humerus and lower third of ulna.
Common sites for malunion are Intertrochantric (IT) femur fracture, supracondylar (SC) humerus fracture and colle’s fracture.