4.7 Article

Extracorporeal Shockwave Therapy Improves Outcome after Primary Anterior Cruciate Ligament Reconstruction with Hamstring Tendons

Journal

JOURNAL OF CLINICAL MEDICINE
Volume 12, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/jcm12103350

Keywords

anterior cruciate ligament; extracorporeal shock wave therapy; graft maturation

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The purpose of this study was to investigate the effects of repetitive ESWT on the recovery time, clinical results, and MRI results after ACL reconstruction. The results showed that patients in the ESWT group had a shorter recovery time, better clinical scores, and improved graft maturation.
Purpose: The decision regarding the timepoint of a return to sports after anterior cruciate ligament (ACL) reconstruction is complex and depends on many factors, including objectively tested physical and psychological readiness as well as biological healing. The aim of this study was to investigate the influence of repetitive extracorporeal shockwave therapy (ESWT) on return-to-sports duration, clinical results and MRI results after ACL reconstruction with hamstring tendons (HT).Material and Methods: In this prospective controlled study, all patients with acute ACL ruptures were treated by ACL reconstruction with HT. Patients were randomized into two groups (Group A: ESWT group; Group B: control group). Patients in the ESWT group received focused shockwave therapy 4, 5 and 6 weeks after ACL surgery. Follow-up investigations including IKDC score, Lysholm score, VAS and evaluation regarding return-to-sports timepoints that were conducted 3-, 6-, 9- and 12-months post-operation. An MRI investigation was performed 12-months post-operation and graft maturation (signal intensity ratio (SIR)) as well as femoral and tibial tunnel characteristics (bone marrow oedema, tunnel fluid effusion) were assessed.Results: In total, 65 patients (27.65 +/- 7.07 years; 35 male/30 female) were included in this study. The mean timepoint for return-to-pivoting-sports was 27.92 weeks (+/- 2.99) in the ESWT group as well as 42.64 weeks (+/- 5.18) in the control group (p < 0.001). In the ESWT group 31 patients (vs. control group: n = 6) attained the pre-injury activity level, whereas 6 patients (vs. control group: n = 22) did not reach this level within 12 months post-operation. The IKDC score, Lysholm score, and VAS showed significant improvement in the ESWT group compared with the control group for all time-points (p < 0.001). The mean SIR in the ESWT group revealed 1.81 (+/- 0.88), whereas the control group showed a mean SIR of 2.68 (+/- 1.04) (p < 0.01).Discussion: In conclusion, this is the first study investigating the effect of repetitive ESWT on ACL reconstruction with clinical outcome measurements, including the duration of return-to-sports activity and an MRI follow-up examination. Return-to-sports parameters, clinical scores and graft maturation were significantly improved in the ESWT group. This study may support an earlier return-to-sports timepoint by ESWT and is of high clinical relevance as ESWT is a cost-effective treatment option with no relevant side effects.

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