New tool may identify risk for post-surgical dislocations

Scientists have developed a new tool that helps to identify which patients undergoing total hip replacement may be at higher risk for an implant dislocation after surgery.

The researchers showed that spinal deformity was a significant risk factor for dislocation and subsequent revision surgery.

Using the risk prediction model and treatment algorithm developed at NYU Langone Medical Centre, the researchers identified 192 of 1,009 patients at high risk for a dislocation after surgery.All 192 patients underwent a total hip replacement through the high-risk algorithm, with dual mobility implants being used in 143 of the cases.The researchers reported only one dislocation in this high-risk group (or 0.5 percent of high-risk patients), compared with 3.1% in the previous group not assessed with the risk assessment and treatment algorithm.

These findings, presented at American Academy of Orthopaedic Surgeons 2018 Annual Meeting, represent a six-fold decrease in the rate of dislocation in the high-risk group.

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