My mother-in-law, broke her hip (femur) just after her 97th birthday. Thanks to her primary care doctor's carefully thought-out plan, she'll return to her home from a rehab center in a few days (4 months later) with a pin in her healed hip, a cane, a walker (for long outings until her energy returns and her legs get stronger), her independence, no ongoing pain--and no caregiver.
Surgery causes much more trauma in the elderly than in the young so he first thing my mil's doctor insisted on was an experienced orthopedic surgeon. Why? It's important that the surgeon "get in and get out" as quickly as possible, resulting in less anesthesia, less blood loss, less time in the operating room, less trauma and faster recovery. In my mil's case, a pin was put in to to help the fractured femur heal.
The surgeon gave the instructions for rehab. In my mil's case the surgeon insisted, no weight-bearing on the affected hip/leg for 90 days--until x-rays showed the hip healed. After verifying it had healed, the surgeon gave new instructions to the physical therapists at the rehab center. After 6 additional weeks of therapy my mil is returning to her home. I've chronicled her experience and insights on my blog http://helpparentsagewell.com. if you're interested.