Page 59 - Demo

ACL reconstruction is not the only factor controlling tibial rotation573ResultsA total of 394 subjects with ACL injury were screened for participation in the study. 57 subjects met the inclusion and exclusion criteria and were asked to participate in the study. Ten subjects provided informed consent and were included in the study. All subjects underwent pre-rehabilitation as described before. Six males and four females remained and completed the primary testing procedures. At follow-up, one year after surgery, seven subjects participated (n=7), as one subject had sustained a re-rupture (four months after reconstruction, due to a new trauma) and two subjects were lost to follow-up as they moved away from the Groningen region. The first measurements from the subjects lost to follow-up were included only in the pre-operative analyses comparing ACL deficient knees to the contra-lateral intact knees.The patient who re-tore its ACL displayed less range of tibial rotation in both knees during level walking, compared to the group mean. During high demand activities no major differences regarding rTR were found. The rTR for the subject with the re-tear of the ACL were as follows for the ACL deficient knee: level walking 6.9 (SD 1.1) degrees, SLHD 16.2 (SD 0.5) degrees and SJ 15.4 (SD 0.9) degrees. For the ACL intact knee the rTR was 10.6 (SD 0.2) degrees during level walking, 25.7 (SD 2.6) degrees during the SLHD and 22.8 (SD 3.2) degrees during the SJ. Patient characteristics are presented in Table 1. No additional injuries to the menisci or cartilage were observed during surgery. No postoperative complications were reported. The mean distances for the SLHD were 105 cm (SD 33) for the ACL-deficient knees and 131 cm (SD 28) for the contralateral intact knees pre-operatively (significant difference, p=0.01). One year after ACLR the SLHD was 115 cm (SD 50) for the ACLreconstructed knees and 124 cm (SD 42) for the contralateral intact knees (non-significant difference, p=0.11). A mean limb symmetry index for the SLHD test of 88% was achieved one year post-operatively. Four out of seven participating subjects had returned to sports activities 12 months post-operatively, three of them at their pre-injury level, based on participants reports. Mark Zee.indd 57 03-01-2024 08:56