TY - JOUR
T1 - Cross-linked polyethylene does not reduce wear in total knee arthroplasty
AU - Lasurt-Bachs, S.
AU - Torner, P.
AU - Maculé, F.
AU - Prats, E.
AU - Menéndez-García, F.
AU - Ríos-Guillermo, J.
AU - Torrents, A.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - © 2018 SECOT Aim: To compare two different types of inserts: Ultra-high molecular weight polyethylene (UHMWPE) and cross-linked polyethylene with a quantitative and qualitative study of polyethylene wear particles in synovial fluid 3 years after total knee arthroplasty. Material and methods: A prospective, randomized, controlled cohort study with blinded evaluation was carried out on 25 patients undergoing staged bilateral total knee replacement, 6 months apart. Knee arthrocentesis was performed on 12 patients 3 years after surgery, and the polyethylene particles were analyzed. Results: No significant differences were found in the number of particles generated by the two different types of inserts at 3 years from total knee arthroplasty (3,000×: x¯ cross-linked = 849.7; x¯ UHMWPE = 796.9; P =.63; 20,000×: x¯ cross-linked = 66.3; x¯ UHMWPE = 73.1; P =.76). Likewise, no differences in the probability of finding elongated (χ2 = 0.19; P =.66) or rounded (χ2 = 1.44; P =.23) particles in both types of inserts were observed. However, the probability of finding fibrillar particles is 3.08 times greater in UHMWPE. Conclusions: Cross-linked polyethylene does not significantly reduce the generation of polyethylene particles in patients with total knee arthroplasty, 3 years after the surgical procedure.
AB - © 2018 SECOT Aim: To compare two different types of inserts: Ultra-high molecular weight polyethylene (UHMWPE) and cross-linked polyethylene with a quantitative and qualitative study of polyethylene wear particles in synovial fluid 3 years after total knee arthroplasty. Material and methods: A prospective, randomized, controlled cohort study with blinded evaluation was carried out on 25 patients undergoing staged bilateral total knee replacement, 6 months apart. Knee arthrocentesis was performed on 12 patients 3 years after surgery, and the polyethylene particles were analyzed. Results: No significant differences were found in the number of particles generated by the two different types of inserts at 3 years from total knee arthroplasty (3,000×: x¯ cross-linked = 849.7; x¯ UHMWPE = 796.9; P =.63; 20,000×: x¯ cross-linked = 66.3; x¯ UHMWPE = 73.1; P =.76). Likewise, no differences in the probability of finding elongated (χ2 = 0.19; P =.66) or rounded (χ2 = 1.44; P =.23) particles in both types of inserts were observed. However, the probability of finding fibrillar particles is 3.08 times greater in UHMWPE. Conclusions: Cross-linked polyethylene does not significantly reduce the generation of polyethylene particles in patients with total knee arthroplasty, 3 years after the surgical procedure.
KW - Polyethylene particles
KW - Synovial fluid
KW - Total knee arthroplasty
U2 - 10.1016/j.recot.2017.11.004
DO - 10.1016/j.recot.2017.11.004
M3 - Article
VL - 62
SP - 197
EP - 203
JO - Revista Espanola de Cirugia Ortopedica y Traumatologia
JF - Revista Espanola de Cirugia Ortopedica y Traumatologia
SN - 1888-4415
IS - 3
ER -