T2 relaxation times of the anterolateral femoral cartilage in patients after ACL-reconstruction with and without a deep lateral femoral notch sign
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T2 relaxation times of the anterolateral femoral cartilage in patients after ACL-reconstruction with and without a deep lateral femoral notch sign. / Behzadi, Cyrus; Welsch, Goetz H.; Petersen, Jan-Philipp; Schoennagel, Bjoern P.; Bannas, Peter; Kaul, Michael G.; Schoen, Gerhard; Berger-Groch, Josephine; Adam, Gerhard; Regier, Marc.
in: EUR J RADIOL, Jahrgang 106, 2018, S. 85-91.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - T2 relaxation times of the anterolateral femoral cartilage in patients after ACL-reconstruction with and without a deep lateral femoral notch sign
AU - Behzadi, Cyrus
AU - Welsch, Goetz H.
AU - Petersen, Jan-Philipp
AU - Schoennagel, Bjoern P.
AU - Bannas, Peter
AU - Kaul, Michael G.
AU - Schoen, Gerhard
AU - Berger-Groch, Josephine
AU - Adam, Gerhard
AU - Regier, Marc
N1 - doi: 10.1016/j.ejrad.2018.07.007
PY - 2018
Y1 - 2018
N2 - PurposeTo quantitatively assess T2 relaxation times of the anterolateral femoral cartilage following anterior cruciate ligament (ACL)-reconstruction with and without a positive deep lateral femoral notch sign (DLNS) at post-traumatic MRI. Materials and MethodsIn 52 patients post-traumatic MRI as well as 12 months after ACL-rupture (ACLR) and surgical treatment were analysed. In 28 patients a positive DLNS was present at post-traumatic MRI. For quantitative analysis, T2 relaxation time measurements (7 TE: 10-70 ms) were performed at time of re-evaluation. Three polygonal ROIs encompassing the full cartilage layer were placed in the anterolateral femoral cartilage. Clinical assessment included Lysholm-Tegner-Activity-Score, Rasmussen's clinical score and modified Cincinnati-Rating-System-Questionnaire. Description and differences were calculated as means and confidence intervals of means, controlled for the cluster effect of person, if appropriate.ResultsIn patients with a positive DLNS after ACLR, relaxation times in the notch region were significantly prolonged compared to patients without a positive DLNS (Δ 7.4 ms, CI: 5.6 - 9.2; p-value <0.001) as well as to the adjacent anterior (Δ 5.7 ms, CI: 4.7 - 6.7; p-value <0.001) and central femoral cartilage (Δ 6.6 ms, CI: 5.7 - 7.6; p-value <0.001).Solely insignificant differences were noticed in the performed clinical scores comparing the two groups (p > 0.05).ConclusionSignificantly prolonged T2 relaxation times of the anterolateral femoral cartilage were found in patients with a positive DLNS following ACL-reconstruction compared to patients without a DLNS. Based on these results, it has to be assumed that a positive DLNS is associated with higher cartilage degradation.
AB - PurposeTo quantitatively assess T2 relaxation times of the anterolateral femoral cartilage following anterior cruciate ligament (ACL)-reconstruction with and without a positive deep lateral femoral notch sign (DLNS) at post-traumatic MRI. Materials and MethodsIn 52 patients post-traumatic MRI as well as 12 months after ACL-rupture (ACLR) and surgical treatment were analysed. In 28 patients a positive DLNS was present at post-traumatic MRI. For quantitative analysis, T2 relaxation time measurements (7 TE: 10-70 ms) were performed at time of re-evaluation. Three polygonal ROIs encompassing the full cartilage layer were placed in the anterolateral femoral cartilage. Clinical assessment included Lysholm-Tegner-Activity-Score, Rasmussen's clinical score and modified Cincinnati-Rating-System-Questionnaire. Description and differences were calculated as means and confidence intervals of means, controlled for the cluster effect of person, if appropriate.ResultsIn patients with a positive DLNS after ACLR, relaxation times in the notch region were significantly prolonged compared to patients without a positive DLNS (Δ 7.4 ms, CI: 5.6 - 9.2; p-value <0.001) as well as to the adjacent anterior (Δ 5.7 ms, CI: 4.7 - 6.7; p-value <0.001) and central femoral cartilage (Δ 6.6 ms, CI: 5.7 - 7.6; p-value <0.001).Solely insignificant differences were noticed in the performed clinical scores comparing the two groups (p > 0.05).ConclusionSignificantly prolonged T2 relaxation times of the anterolateral femoral cartilage were found in patients with a positive DLNS following ACL-reconstruction compared to patients without a DLNS. Based on these results, it has to be assumed that a positive DLNS is associated with higher cartilage degradation.
U2 - 10.1016/j.ejrad.2018.07.007
DO - 10.1016/j.ejrad.2018.07.007
M3 - SCORING: Journal article
VL - 106
SP - 85
EP - 91
JO - EUR J RADIOL
JF - EUR J RADIOL
SN - 0720-048X
ER -
