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Hould be conducted. Removal of the device that is not needed should be considered, since removal may alleviate the symptoms. Patients who have allergic reactions to cheap jewelry are more likely to have reactions to orthopedic implants. There is increasing awareness of the phenomenon of metal sensitivity and many surgeons now take this into account when planning which implant is optimal for each patient. buy viagra cheap viagra viagra without a doctor prescription viagra for sale buy generic viagra viagra online http://classicmotocrossimages.com/mbs-online-order-viagra-tb/ viagra for sale buy generic viagra buy cheap viagra On march 12, 2012, the lancet published a study, based on data from the national joint registry of england and wales, finding that metal-on-metal hip implants failed at much greater rates than other types of hip implants and calling for a ban on all metal-on-metal hips.  the analysis of 402,051 hip replacements showed that 6. 2% of metal-on-metal hip implants had failed within five years, compared to 1. 7% of metal-on-plastic and 2. 3% of ceramic-on-ceramic hip implants. Each 1mm increase in head size of metal-on-metal hip implants was associated with a 2% increase of failure.  surgeons of the british hip society are recommending that large head metal-on-metal implants should no longer be performed.  on february 10, 2011, the u. S. Fda issued a patient advisory on metal-metal hip implants, stating it was continuing to gather and review all available information about metal-on-metal hip systems.  on june 27â€“28 2012, an advisory panel will meet to decide whether to impose new standards, taking into account the the lancet findings.    nerve palsy post operative sciatic nerve palsy is another possible complication. The incidence of this complication is low. Femoral nerve palsy is another but much more rare complication. Both of these will typically resolve over time, but the healing process is slow. Patients with pre-existing nerve injury are at greater risk of experiencing this complication and are also slower to recover.  chronic pain a few patients who have had a hip replacement suffer chronic pain after the surgery. Groin pain can develop if the muscle that raises the hip (iliopsoas) rubs against the edge of the acetabular cup. Bursitis can develop at the trochanter where a surgical scar crosses the bone, or if the femoral component used pushes the leg out to the side too far. Also some patients can experience pain in cold or damp weather. [ citation needed ] incision made in the front of the hip (anterior approach) can cut a nerve running down the thigh leading to numbness in the thigh and occasionally chronic pai.