Three things: Need – Although I don't technically meet the requirement for full-time powerchair use (partly due to my extreme stubbornness in refusing to make my condition worse by using a wheelchair full time) it is easy to make a case for need on the grounds of my frequency of falls, risk, dislocations, pain and fatigue.
Furthermore, both tubercle fractures and axillary palsies result in decreased movement of the limb for a significant period of time, which may increase the strength of the anatomical repair and limit exposure to high-risk dislocation positions such as abduction/external rotation.
Revision surgery is associated with a higher risk of dislocation than primary THA, and dislocation rates of up to 28% have been reported (Parvizi et al. 2008).
Risk of dislocation within 90 days was lower (3.4% vs 2.8%), risk of dislocation within 30 days was lower (2.1% vs 2.0%), and risk of multiple dislocations (1.8% vs 1.1%) was lower in patients who were mobilized without restrictions, but not statistically significantly so.
With this greater facility of motion goes a greater risk of dislocation.
The resurfacing implant is larger than the femoral head used in total hip replacements, offering greater stability and reducing the risk of dislocation, the most common cause of hip replacement failures.
"He said I was a good candidate and that the larger ball and socket were better for me, with lower risk of dislocation and greater range of motion than a conventional replacement," Dr. Goone said.
It has been postulated that increasing the femoral head diameter may reduce the risk of dislocation.
In this study we evaluated the effect of femoral head diameter on the risk of dislocation.
We could not find any difference in risk of dislocation between men and women.
Total hip replacement (THR) following hip tumor resection incurs a high risk of dislocation.
