2017 ISAKOS Biennial Congress ePoster #1005
Are Maturation and Ligamentization of ACL Hamstring Grafts Improved in the Male Patients when Hamstring Tibial Insertions Are Retained? A Comparison Study Using Clinical and 3.0T Magnetic Resonance Imaging
Shaohua Liu, MD, Shanghai CHINA
Hong Li, MD, Shanghai CHINA
Hongyun Li, MD, Shanghai CHINA
Ziying Wu, MD, Shanghai CHINA
Yaying Sun, MD, Shanghai CHINA
Shiyi Chen, MD, PhD, Prof., Shanghai CHINA
Jiwu Chen, MD, PhD, Shanghai CHINA
Huashan Hospital, Fudan University, Shanghai, CHINA
FDA Status Not Applicable
Summary
The significantly lower SNQ value in the hamstring tibial insertions preserved group during the first postoperative year indicated that the maturation and ligamentization of ACL hamstring grafts might be improved in the male patients when hamstring tibial insertions are retained comparing with the control group patients that without intact autogenous hamstring tibial insertions
Abstract
Purpose
To investigate the graft maturity of the reconstructed autogenous hamstring tendon grafts without detachment of their tibial insertions during the first year postoperatively and compare with a control group of patients that with preservation of hamstring tibial insertion.
Methods
33 male patients underwent ACL reconstruction with autogenous hamstring tendon graft including 20 cases with detachment of hamstring tibial insertion (control group) and 13 cases with preservation of hamstring tibial insertion (PT group). All patients had follow-up 3.0-T magnetic resonance imaging (MRI) scans at 3, 6, and 12 months postoperatively. A clinical evaluation was performed the day of and prior to the MRI examination. MRI measurements were focused on signal intensity of the grafts using the signal/noise quotient (SNQ) from a region of interest analysis.
Results
There was no significant difference between the two groups in respect to functional scores. Physical examination performed before the MRI confirmed that there was no significant laxity of the knees in both groups. MRI measurements found that the mean SNQ value of the PT group appeared lower than that of the control group at 3 months, but the difference was not statistically significant(15 ± 11.2 vs 21.4 ± 12.7; p > 0.05). There was a statistically significant difference in the SNQ value between the two groups at 6 months and again at 12 months postop (6 months: 14.9 ± 6.3 vs 25.6 ± 12; p = 0.006; 12 months: 12.6 ± 7.0 vs 18.3 ± 7.7; p = 0.039).
Conclusion
The PT group had a significantly lower SNQ value compared with the control group during the first postoperative year in this study, indicating that the graft maturity of hamstring tibial insertion-preserved tendon may be superior to that of the tibial insertion-detached tendon in the male patients.
Study Design: Cohort study; Level of evidence 3.