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Table 4 Pearson correlation partialized for type of implant between time to revision, cement adhesion, dimensions and roughness (Ra) of the tibial trays and reason for revision. *** p < 0.001, ** p < 0.01, * p < 0.05

From: Comparative retrieval analysis of a novel anatomic tibial tray backside: alterations in tibial component design and surface coating can increase cement adhesions and surface roughness

Partial Pearson correlation (corrected for implant type) Time to revision Cement adhesion tibial tray Tibial tray stem length Tibial tray lip height Tibial tray thickness with lip Tibial tray backside, lateral, Ra Tibial tray backside, medial, Ra Tibial tray stem, Ra Total tray backside & stem, Ra Instability Malalignment Patellofemoral Stiffness Others
Time to revision 1 −0.22 0.17 −0.32 −0.04 0.16 0.03 −0.12 0.02 0.42 −0.2 −0.29 −0.53* 0.18
Cement adhesion tibial tray −0.22 1 −0.31 − 0.27 0.12 0.05 0.14 −0.16 0.01 −0.08 0 0.3 0.17 −0.01
Tibial tray stem length 0.17 −0.31 1 0.15 −0.26 −0.07 0.05 −0.01 − 0.01 −0.25 0.33 −0.09 0.06 0.15
Tibial tray lip height −0.32 −0.27 0.15 1 0.17 0.21 0.2 0.48* 0.32 −0.23 0.18 0.25 0.16 0.01
Tibial tray thickness with lip −0.04 0.12 −0.26 0.17 1 −0.09 −0.08 − 0.13 −0.11 − 0.03 −0.09 − 0.02 −0.1 0
Tibial tray backside, lateral, Ra 0.16 0.05 −0.07 0.21 −0.09 1 0.88*** 0.75*** 0.95*** 0.33 −0.25 −0.1 − 0.36 −0.18
Tibial tray backside, medial, Ra 0.03 0.14 0.05 0.2 −0.08 0.88*** 1 0.7*** 0.93*** 0.18 −0.25 −0.09 − 0.28 0.03
Tibial tray stem, Ra −0.12 −0.16 − 0.01 0.48* − 0.13 0.75*** 0.7*** 1 0.89*** 0.01 −0.04 −0.02 − 0.09 −0.1
Total tray backside & stem, Ra 0.02 0.01 −0.01 0.32 −0.11 0.95*** 0.93*** 0.89*** 1 0.18 −0.2 − 0.08 −0.26 − 0.09
Instability 0.42 −0.08 −0.25 − 0.23 −0.03 0.33 0.18 0.01 0.18 1 −0.39 −0.19 − 0.52* −0.48*
Malalignment −0.2 0 0.33 0.18 −0.09 −0.25 − 0.25 −0.04 − 0.2 −0.39 1 0.18 0.16 −0.13
Patellofemoral −0.29 0.3 −0.09 0.25 −0.02 −0.1 − 0.09 −0.02 − 0.08 −0.19 0.18 1 0.14 −0.06
Stiffness −0.53* 0.17 0.06 0.16 −0.1 −0.36 − 0.28 −0.09 − 0.26 −0.52* 0.16 0.14 1 −0.17
Others 0.18 −0.01 0.15 0.01 0 −0.18 0.03 −0.1 −0.09 − 0.48* −0.13 − 0.06 −0.17 1
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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