Hip fracture Femur Neck Nonunion after 5 months...

Non union Neck of femur fracture 
Neck of femur fracture is one of the commonest fractures that encountered by elderly patients, its a condition of disruption of the normal architicture of the femur bony structure that happen due to direct trauma after fallen down accedents. in some cases the fracture develop a state of malunion in which the bony structures fail to reach the orginal shape that will yeild a deformity and defect in walking abitlity, on the other hand a few cases develop a state of non union when the bony structures failed to show any sign of union after 9 months of fracures for 3 consecutive months, so its associated with tenderness and inability to bear weight in addition to swelling at the hip, but in your case if the surgery was done well at the first time wachful waiting is wise to judge for non- union and a consultation for your treating orthopedic surgeon.
Required tests 
after doing a proper clinical exam, cbc should be done to rule out anemia , kidney funtion tests and fasting blood glucose level, Calcium and Vitamin d3 to rule out osteoprosis, A CT SCAN of the hip in addition to bone scan to look for signs of avascular necrosis and osteoprosis. MRI may be requested.
Causes of NON union 

• Inaccurate reduction 
• loss of fixation
• No treatment 
• delayed treatment 
• Avascular necrosis 
• Osteoprosis 

Our advice 
You are adviced to have a balanced diet rich of calcium sources like cheese, milk and vegetables in addition to follow up with your physiotherapist and orthopedic  surgeon