STEM-NECK MODULAR TOTAL HIP ARTHROPLASTY: POSSIBLE MECHANICAL EFFECTS!

Introduction: Recentely modular neck femoral components has been considered at risk for Fretting at thè stem-neck interface. Normally total joint repalcement are not monitorated for COcr levels in thè various casitics are not yet really known. Aim: Serum, urinary levels and radiogrphic evaluation in patients with Modular stem first implant recalled from one company. Matheriial .and .fptKofi*^ Aivt^is -af ?_? -p^fipqts wìtb AB£> 11 Modular Npf V From Stryker with a mìnum 1 year Follow up that has been checked wit serum, urinary CoCr evaluation and clinical and radiographic contrai. Results: Mean serum Cr 0,63 ugL-1 (range 0,1-2,15 ugL-1), Mean serum Co ugL-1 (range 0,62-7,78 ugL-1), Mean urinary Cr 1,24 ugL-1 (range 0,48-2,21 HgL-1) and mean urinary Co 14,22 ugL-1 (range 3,3-31,2 MgL-1). Conclusions: Nobody of thè patients presente any symptomps or signs that can be attributed to thè implant. In addition thè offset recovery and thè age seems to be correlated with high levels but this data it's quile weak and needs more follow up an patient to be confirmed. A contro! group is in progress at thè moment of this writing.