Patient, surgical and hospital factors predicting actual first‐day mobilisation after hip fracture surgery: an observational cohort study

Objectives: To examine patient, surgical and hospital factors associated with Day-1 postoperative mobility after hip fracture surgery in older adults.

Methods: A cohort study using Australia and New Zealand Hip Fracture Registry was conducted. Participants were aged older than 50 years and underwent hip fracture surgery between 1 January 2020 and 31 December 2020 inclusive. The outcome was standing and step transferring out of bed onto a chair and/or walking Day-1 after hip fracture surgery.

Results: Mean age was 82 years and 68% were women. Of 12,318 patients with hip fracture, 5981 (49%) actually mobilised Day-1. Odds of actual first-day mobilisation were lower for individuals usually walking with either stick or crutch (OR = 0.71, 95% CI 0.62–0.82) or two aids or frame (OR = 0.57, 95% CI 0.52–0.64) or wheelchair/bed bound (OR = 0.24, 95% CI 0.17–0.33); who had impaired cognition preadmission (OR = 0.57, 95% CI 0.51–0.64); from aged care facilities (OR = 0.59, 95% CI 0.52–0.67); had an American Society of Anaesthesiologists grade 2 (OR = 0.63, 95% CI 0.41–0.97), 3 (OR = 0.31, 95% CI 0.20–0.47) or 4 or 5 (OR = 0.21, 95% CI 0.14–0.32); surgery delay >48 h (OR = 0.81, 95% CI 0.71–0.91); and restricted/non-weight-bearing status immediately postoperatively (OR = 0.53, 95% CI 0.42–0.67).

Conclusions: Both non-modifiable and modifiable patient and surgical factors influence first-day mobilisation after hip fracture surgery. Reducing time to surgery might assist future quality improvement efforts to increase Day-1 postoperative mobility.