RT Journal Article
SR Electronic
T1 110 Pronounced quadriceps weakness with quadriceps tendon graft compared to patellar or hamstrings tendon graft for anterior cruciate ligament reconstruction
JF BMJ Open Sport & Exercise Medicine
JO BMJ OPEN SP EX MED
FD BMJ Publishing Group Ltd
SP A14
OP A14
DO 10.1136/bmjsem-2023-sportskongres2023.38
VO 9
IS Suppl 1
A1 Holmgren, David
A1 Noory, Shiba
A1 Moström, Eva
A1 Grindem, Hege
A1 Stålman, Anders
A1 Wörner, Tobias
YR 2023
UL http://bmjopensem.bmj.com/content/9/Suppl_1/A14.1.abstract
AB Introduction Impaired quadriceps muscle function following ACL reconstruction (ACLR) is associated with worse clinical outcomes and risk of re-injury. Yet, we know very little about quadriceps muscle function in patients reconstructed with quadriceps tendons (QT), a graft with increasing popularity worldwide. The purpose of this study was to describe and compare isokinetic quadriceps strength in patients undergoing ACLR with QT, hamstrings tendon (HT) or patellar tendon (BPTB) autograft.Materials and Methods In this cross-sectional study we included QT-patients (n=104) and matched them to BPTB - (n=104) and HT-patients (n=104) according to age, gender, and associated meniscus surgeries (Mean time from ACLR [SD]: 7 months [1]). Data were collected through clinical follow up routines and the Swedish ACL registry. Isokinetic strength was measured at 90°/seconds and expressed through leg symmetry index (LSI). Group differences were assessed by analysis of variance with post-hoc pair wise comparison.Results QT patients had significantly lower peak knee extension torque than BPTB- (Mean LSI difference [95%CI]: -6,9% [-11,2 to -2,7], p = <0.01) and HT-patients (Mean LSI difference [95%CI],: -17,4% [-21,7 to -13,2], p = <0.01). None of the graft groups reached a mean LSI in peak knee extension torque of >90% [Mean LSI [95%CI]: QT = 67,5% [64.8–70.1]; BPTB = 74,4% [72–76.9)]; HT = 84,9% [82.4–87.4].Conclusion Seven months following ACLR, patients operated with QT-grafts present with significantly worse isokinetic quadriceps strength than patients operated with BPTB- and HT grafts. None of the three groups reached an LSI of >90% in quadriceps strength.