Inclusion Criteria:  All patients 18 years of age and above who underwent operative treatment of displaced fracture neck of femur in the two institutions during the study period. Written informed consent.  Exclusion Criteria:  Patients who had un-displaced or bilateral fracture neck of femur, concomitant pelvic or lower limb fracture/ dislocation, multiple injuries, confusion, previous ipsilateral FNF or FNF surgery, operative treatment done outside the study setting, malignant/ pathological fractures or peri-prosthetic fractures; Patients who were non-ambulatory prior to injury and those with chronic pain syndrome and/ or chronic opioid use; Patients who declined to give written informed consent.