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Zhou T, Xu Y, Zhang A, Zhang X, Deng K, Wu H, Xu W. Association of Graft Maturity on MRI With Return to Sports at 9 Months After Primary Single-Bundle ACL Reconstruction With Autologous Hamstring Graft. Orthop J Sports Med 2024; 12:23259671241248202. [PMID: 38736770 PMCID: PMC11084992 DOI: 10.1177/23259671241248202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/13/2023] [Indexed: 05/14/2024] Open
Abstract
Background The relationship between graft maturity on magnetic resonance imaging (MRI) and return to sports (RTS) after anterior cruciate ligament (ACL) reconstruction is unclear. Purpose To compare signal-to-noise quotient (SNQ) values and ACL graft T2* (gradient echo) values between patients who did RTS and those who did not RTS (NRTS) after ACL reconstruction and to evaluate the predictive value of T2* mapping for RTS after ACL reconstruction. Study Design Case-control study; Level of evidence, 3. Methods At a minimum of 9 months after arthroscopic single-bundle ACL reconstruction with autologous hamstring tendon graft, 82 patients underwent RTS assessment as well as MRI evaluation. The patients were classified into RTS (n = 53) and NRTS (n = 29) groups based on the results of the assessment. The SNQ values in the proximal, middle, and distal regions of the graft and the T2* values of the graft were measured on MRI. The correlation between T2* values and RTS was assessed using Spearman correlation analysis. Receiver operating characteristic curves were constructed to compare the diagnostic performance, and the optimal T2* cutoff value for detecting RTS was determined based on the maximum Youden index. Results At 9 months after ACL reconstruction, the proximal, middle, and mean SNQ values in the RTS group were significantly lower than those in the NRTS group (proximal: 17.15 ± 4.85 vs 19.55 ± 5.05, P = .038; middle: 13.45 ± 5.15 vs. 17.75 ± 5.75, P = .001; mean: 12.37 ± 2.74 vs 15.07 ± 3.32, P < .001). The T2* values were lower in the RTS group (14.92 ± 2.28 vs 17.69 ± 2.48; P < .001) and were correlated with RTS (r = -0.41; P = .02). The area under the curve of T2* was 0.79 (95% CI, 0.75-0.83), and the optimal cutoff value for T2* was 16.65, with a sensitivity and specificity for predicting failure to RTS of 67.9% and 88.2%, respectively. Conclusion Study findings indicated that the SNQs (mean, proximal, and middle) and the T2* values of the graft in the RTS group were significantly lower than those in NRTS group. A T2* value of 16.65 was calculated to predict patients who failed RTS tests with a sensitivity of 67.9% and specificity of 88.2%.
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Affiliation(s)
- Tianping Zhou
- Department of Joint Surgery and Sports Medicine, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Yihong Xu
- Department of Joint Surgery and Sports Medicine, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Aiai Zhang
- Department of Burn Surgery, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Xuchao Zhang
- Department of Joint Surgery and Sports Medicine, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Kehan Deng
- Department of Stomatology, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Haoran Wu
- Department of Spine Surgery, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
| | - Weidong Xu
- Department of Joint Surgery and Sports Medicine, Changhai Hospital affiliated to Navy Medical University, Shanghai, China
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Smith PA, Daniel AV, Stensby JD, Cook CS, Wijdicks CA. Quadriceps Tendon Autograft ACL Reconstruction With Suture Tape Augmentation: Safe Results Based on Minimum 2-Year Follow-up MRI. Orthop J Sports Med 2024; 12:23259671241239275. [PMID: 38617885 PMCID: PMC11010759 DOI: 10.1177/23259671241239275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 09/18/2023] [Indexed: 04/16/2024] Open
Abstract
Background The potential intra-articular effects of ≥1 year after anterior cruciate ligament reconstruction (ACLR) with independent suture tape augmentation (STA) are not fully understood. Purpose To investigate whether incorporating suture tape in an all-soft tissue quadriceps tendon autograft (QTA) ACLR leads to satisfactory patient outcomes while having no intra-articular side effects as determined by magnetic resonance imaging (MRI). Study Design Case series; Level of evidence, 4. Methods Included were 25 patients with a mean age of 19.9 years (95% CI, 17.3-22.5 years) who underwent QTA ACLR with STA between 2016 and 2019. All patients underwent MRI at ≥1 year postoperatively and had at least a 2-year follow-up (mean, 28 months [95% CI, 26.5-29.5 months]) that included physical examination with anterior laxity testing with KT-1000 arthrometer, radiographs, and patient-reported outcome measures (PROMs). At the final follow-up, the minimal clinically important difference (MCID) and the Patient Acceptable Symptom State (PASS) for applicable PROMs were applied to each patient. Postoperative graft and joint integrity were assessed using the Howell classification and the MRI Osteoarthritis Knee Score (MOAKS) joint effusion/synovitis grade. The Mann-Whitney U test for continuous variables and the chi-square or the Fisher exact test for categorical variables were used for statistical analyses. Results The MRI assessment of the grafts demonstrated intact grafts in all patients. Overall, 96% of patients demonstrated grades 0 or 1 MOAKS for joint effusion/synovitis. All patient outcomes significantly improved from preoperatively to the final follow-up (P < .001), except for the Marx score, which decreased significantly (14.2 [95% CI, 12.7-15.8] vs 9.72 [95% CI, 7.3-12.2]; P = .0014). At least 68% of the patients achieved the MCID threshold, and 92% achieved the PASS threshold for all applicable PROMs. Conclusion QTA ACLR with STA did not demonstrate adverse intra-articular changes on MRI at ≥1 year postoperatively. In addition, STA did not appear to negatively affect PROMs.
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Affiliation(s)
| | | | - James D. Stensby
- Diagnostic Radiology, University of Missouri, Columbia, Missouri, USA
| | - Corey S. Cook
- The Columbia Orthopaedic Group, Columbia, Missouri, USA
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Cordier G, Boudahmane S, Ovigue J, Michels F, Araujo Nunes G, Dallaudiere B. MRI Assessment of Tendon Graft After Lateral Ankle Ligament Reconstruction: Does Ligamentization Exist? Am J Sports Med 2024; 52:721-729. [PMID: 38343192 DOI: 10.1177/03635465231225487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
BACKGROUND No description exists in the literature about the normal evolution of tendon graft after a lateral ankle ligament (LAL) reconstruction. PURPOSE To assess the magnetic resonance imaging (MRI) characteristics and the evolution of the tendon graft during different moments in the follow-up after an endoscopic reconstruction of the LAL. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS This prospective study included 37 consecutive patients who underwent an endoscopic reconstruction of the LAL with an autograft using the gracilis tendon to treat chronic ankle instability (CAI) resistant to nonoperative treatment (CAI group) and 16 patients without ankle instability (control group). All patients in the CAI group underwent a postoperative assessment at 6, 12, and 24 months using the Karlsson score and MRI examination. Only patients with good and excellent results were included in the study. Graft assessment consisted of qualitative measurements and quantitative evaluations of the reconstructed anterior talofibular ligament (RATFL) and reconstructed calcaneofibular ligament (RCFL), including signal-to-noise quotient (SNQ) and contrast-to-noise quotient (CNQ) measurements in proton density-fat suppressed (PD-FS) and T1-weighted sequences. The analysis of variance test was used to compare the SNQ and the CNQ at different time points for each sequence. RESULTS The MRI signal at 6 months was increased compared with that of the control group. Next, a significant signal decrease from 6 to 24 months was noted on PD-FS and T1-weighted images. SNQ measurements on PD-FS weighted images for both the RATFL and the RCFL demonstrated a significantly higher signal (P < .01 and P = .01, respectively) at 6 months compared with that of the control group. Subsequently, the signal decreased from 6 to 24 months. Similarly, CNQ measurements on PD-FS weighted images for both the RATFL and the RCFL demonstrated a significantly higher signal (P < .01 and P < .01, respectively) at 6 months compared with that of the control group. Subsequently, the signal decreased from 6 to 24 months. CONCLUSION The present study demonstrated an evolution of the MRI characteristics, suggesting a process of graft maturation toward ligamentization. This is important for clinical practice, as it suggests an evolution in graft properties and supports the possibility of creating a viable ligament.
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Affiliation(s)
- Guillaume Cordier
- Clinique du Sport, Vivalto Santé, Bordeaux-Merignac, France
- MIFAS by GRECMIP (Minimally Invasive Foot and Ankle Society), Merignac, France
| | - Sofiane Boudahmane
- Centre d'Imagerie Ostéo-articulaire, Clinique du Sport de Bordeaux-Merignac, Merignac, France
| | - Jordan Ovigue
- Clinique du Sport de Bordeaux-Merignac, Merignac, France
| | - Frederick Michels
- MIFAS by GRECMIP (Minimally Invasive Foot and Ankle Society), Merignac, France
- Orthopaedic Department, AZ Groeninge, Kortrijk, Belgium
- EFAS, ESSKA-AFAS Ankle Instability Group
| | - Gustavo Araujo Nunes
- MIFAS by GRECMIP (Minimally Invasive Foot and Ankle Society), Merignac, France
- Cote Brasília Clinic, DF, Brasilia, Brazil
| | - Benjamin Dallaudiere
- Centre d'Imagerie Ostéo-articulaire, Clinique du Sport de Bordeaux-Merignac, Merignac, France
- Centre de Résonance Magnétique des Systèmes Biologiques, Université de Bordeaux, Bordeaux, France
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de Rousiers A, Rougereau G, Rousselin B, Langlais T, Rollet ME, Bauer T, Bachy M, Hardy A. Adaptation of the Signal Noise Quotient MRI classification for graft ligamentization analysis following ATFL and CFL anatomical reconstruction: Validation of the SNQA. Foot Ankle Surg 2023; 29:243-248. [PMID: 36774199 DOI: 10.1016/j.fas.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 12/19/2022] [Accepted: 01/27/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND Chronic ankle instability is the most frequent clinical sign of an antero tibiofibular (ATFL) and/or calcaneo fibular ligament (CFL) tear. One common surgical technique is to use the distal tendon of the gracilis muscle to reconstruct both the ATFL and CFL. In the knee, the hamstring tendons used in anterior cruciate ligament (ACL) reconstruction may go through structural modifications called "ligamentization ". A noninvasive MRI technique has been developed using the Signal/Noise Quotient to compare the signal of the graft following reconstruction to that of the posterior cruciate ligament. To our knowledge no studies have ever evaluated radiographic changes in the graft over time. The main goal of this study was to develop a specific MRI protocol to evaluate graft remodeling following ATFL and CFL reconstruction over time. METHODS A prospective study of the changes in the MRI signal of the ATFL-CFL graft 3-months postoperatively was performed in 20 patients. The main outcome was a comparison of the graft signal to that of the peroneal fibular tendon and the surrounding noise to determine the Ankle SNQ (SNQA). MRI images were evaluated by two senior radiologists to assess inter-rater reliability and then 2 weeks later for the intra-rater reproducibility. RESULTS The intraclass correlation (ICC) showed excellent inter- and intra rater reliability for the ATFL SNQA (0.96 and 0.91, respectively); and for the CFL SNQA, the ICC was 0.97 and 0.99, respectively. Bland-Altman analysis showed very limited bias in the interpretation of SNQA. CONCLUSION This preliminary study confirmed the inter- and intra- rater reliability of a new tool using the SNQA.
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Affiliation(s)
- Arnaud de Rousiers
- Departement of Orthopedic Surgery, Ambroise Paré Hospital, APHP, 9 avenue Charles de Gaulle, 92100 Boulogne-Billancourt, France.
| | - Grégoire Rougereau
- Departement of Orthopedic Surgery, Ambroise Paré Hospital, APHP, 9 avenue Charles de Gaulle, 92100 Boulogne-Billancourt, France
| | - Benoit Rousselin
- Departement of Orthopedic Surgery, Ambroise Paré Hospital, APHP, 9 avenue Charles de Gaulle, 92100 Boulogne-Billancourt, France
| | - Tristan Langlais
- Department of Pediatric Orthopedic Surgery, Trousseau Hospital, Sorbonne University, APHP, 26 avenue du Dr. Arnold Netter, 75012 Paris, France
| | - Marie-Eva Rollet
- Departement of Orthopedic Surgery, Ambroise Paré Hospital, APHP, 9 avenue Charles de Gaulle, 92100 Boulogne-Billancourt, France
| | - Thomas Bauer
- Departement of Orthopedic Surgery, Ambroise Paré Hospital, APHP, 9 avenue Charles de Gaulle, 92100 Boulogne-Billancourt, France
| | - Manon Bachy
- Department of Pediatric Orthopedic Surgery, Trousseau Hospital, Sorbonne University, APHP, 26 avenue du Dr. Arnold Netter, 75012 Paris, France; Université de Paris, B3OA, UMR CNRS 7052, INSERM U1271, 10 avenue de Verdun, 75010 Paris, France
| | - Alexandre Hardy
- Clinique du Sport, 28 boulevard Saint Marcel, 75005 Paris, France; GRC33 Sorbonne Université Service de Chirurgie Orthopédique et Réparatrice de l'Enfant, Hôpital Armand Trousseau, 26 avenue du Dr Arnold Netter 75012 Paris
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Biset A, Douiri A, Robinson JR, Laboudie P, Colombet P, Graveleau N, Bouguennec N. Tibial tunnel expansion does not correlate with four-strand graft maturation after ACL reconstruction using adjustable cortical suspensory fixation. Knee Surg Sports Traumatol Arthrosc 2022; 31:1761-1770. [PMID: 35876906 DOI: 10.1007/s00167-022-07051-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 06/17/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE Anterior cruciate ligament reconstruction (ACLR) using a short, quadrupled semitendinosus (ST-4) autograft, fixed with an adjustable suspensory fixation (ASF), has several potential advantages. However, the construct is suspected to generate micromotion, tunnel widening and poor graft maturation. The aim of this study was to evaluate post-operative tibial tunnel expansion, graft maturation and clinical outcomes for this type of ACLR. METHODS One-hundred and forty-nine patients were reviewed at a minimum of 2 years following 4-ST ACLR, mean 25.6 ± 3.5 months [24-55], with clinical follow-up and MRI scans. Graft maturity of the intra-articular part of the graft and the tibial tunnel portion was assessed using Signal-to-Noise Quotient (SNQ) and Howell score. Tibial tunnel expansion, bone-graft contact and graft volume in the tibial tunnel were calculated from the MRI scans. RESULTS Mean tibial tunnel expansion was 13 ± 16.5% [12-122]. Mean SNQ for graft within the tibial tunnel was 3.8 ± 7.1 [ - 7.7 to 39] and 2.0 ± 3.5 [ - 14 to 17] for the intra-articular portion of the graft. The Howell score for graft within the tibial tunnel was 41% Grade I, 37% Grade 2, 20% Grade 3, 2% grade 4, and for the intra-articular part 61% Grade 1, 26% Grade 2, 13% Grade 3 and 1% Grade 4. The mean tibial tunnel bone-graft contact was 81 ± 23% [0-100] and mean graft volume was 80 ± 22% [0-100]. No correlation was found between tibial tunnel expansion and graft maturity assessed at both locations. Graft maturity was correlated with higher graft-bone contact and graft volume in the tibial tunnel (p < 0.05). CONCLUSIONS ST-4 ACLR with ASF had low levels of tunnel enlargement at 2 years. No correlation was found between graft maturation and tibial tunnel expansion. Graft maturity was correlated with graft-bone contact and graft volume in the tibial tunnel. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
| | - Adil Douiri
- MD, Sports Clinic of Bordeaux-Merignac, Merignac, France
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Putnis SE, Klasan A, Oshima T, Grasso S, Neri T, Coolican MRJ, Fritsch BA, Parker DA. Magnetic Resonance Imaging Assessment of Hamstring Graft Healing and Integration 1 and Minimum 2 Years after ACL Reconstruction. Am J Sports Med 2022; 50:2102-2110. [PMID: 35612835 DOI: 10.1177/03635465221096672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND An increase has been seen in the number of studies of anterior cruciate ligament reconstruction (ACLR) that use magnetic resonance imaging (MRI) as an outcome measure and proxy for healing and integration of the reconstruction graft. Despite this, the MRI appearance of a steady-state graft and how long it takes to achieve such an appearance have not yet been established. PURPOSE To establish whether a hamstring tendon autograft for ACLR changes in appearance on MRI scans between 1 and 2 years and whether this change affects a patient's ability to return to sports. STUDY DESIGN Case series; Level of evidence, 4. METHODS Patients with hamstring tendon autograft ACLR underwent MRI and clinical outcome measures at 1 year and at a final follow-up of at least 2 years. MRI graft signal was measured at multiple regions of interest using oblique reconstructions both parallel and perpendicular to the graft, with lower signal indicative of better healing and expressed as the signal intensity ratio (SIR). Changes in tunnel aperture areas were also measured. Clinical outcomes were side-to-side anterior laxity and patient-reported outcome measures (PROMs). RESULTS A total of 42 patients were included. At 1 year, the mean SIR for the graft was 2.7 ± 1.2. Graft SIR of the femoral aperture was significantly higher than that of the tibial aperture (3.4 ± 1.3 vs 2.6 ± 1.8, respectively; P = .022). Overall, no significant change was seen on MRI scans after 2 years; a proximal graft SIR of 1.9 provided a sensitivity of 96% to remain unchanged. However, in the 6 patients with the highest proximal graft SIR (>4) at 1 year, a significant reduction in signal was seen at final follow-up (P = .026), alongside an improvement in sporting level. A significant reduction in aperture area was also seen between 1 and 2 years (tibial, -6.3 mm2, P < .001; femoral, -13.3 mm2, P < .001), which was more marked in the group with proximal graft SIR >4 at 1 year and correlated with a reduction in graft signal. The patients had a high sporting level; the median Tegner activity score was 6 (range, 5-10), and a third of patients scored either 9 or 10. Overall, PROMs and knee laxity were not associated with MRI appearance. CONCLUSION In the majority of patients, graft SIR on MRI did not change significantly after 1 year, and a proximal graft SIR <2 was a sensitive indicator for a stable graft signal, implying healing. Monitoring is proposed for patients who have a high signal at 1 year (proximal graft SIR >4), because a significant reduction in signal was seen in the second year, indicative of ongoing healing, alongside an improvement in sporting level. A reduction in tunnel aperture area correlated with a reduction in graft SIR, suggesting this could also be a useful measure of graft integration.
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Affiliation(s)
- Sven E Putnis
- Avon Orthopaedic Centre, Bristol, UK.,University Hospitals Bristol & Weston NHS Foundation Trust, UK
| | | | - Takeshi Oshima
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan.,Asanogawa General Hospital, Kanazawa, Japan
| | - Samuel Grasso
- University of Sydney, Sydney, Australia.,Sydney Orthopaedic Research Institute, Sydney, Australia
| | - Thomas Neri
- Laboratory of Human Movement Science, University of Lyon - University Jean Monnet, Saint Etienne, France.,Department of Orthopaedic Surgery, University Hospital of Saint-Etienne, France
| | | | | | - David A Parker
- University of Sydney, Sydney, Australia.,Sydney Orthopaedic Research Institute, Sydney, Australia
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7
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Malahias MA, Capece FM, Ballarati C, Viganò M, Marano M, Hofbauer M, Togninalli D, de Girolamo L, Denti M. Sufficient MRI graft structural integrity at 9 months after anterior cruciate ligament reconstruction with hamstring tendon autograft. Knee Surg Sports Traumatol Arthrosc 2022; 30:1893-1900. [PMID: 35039919 DOI: 10.1007/s00167-021-06830-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/02/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE To assess the MRI-measured structural integrity of hamstring autograft at 9 months after anterior cruciate ligament reconstruction (ACLR) surgery. METHODS A prospective cohort study was conducted including 34 patients (mean age 36.8 ± 11.8 years; 73.5% males) who underwent ACLR with hamstring autograft. In addition, 36 patients (mean age 39.2 ± 10.5 years; 69.4% males) without any ACL injury were also reviewed and served as control group. The primary outcome used for examining graft maturity at 9 months after ACLR was the MRI-based signal-to-noise quotient (SNQ) of reconstructed ACL. SNQ values were stratified into 3 different categories: excellent: < 0.1; good: ≥ 0.1 and ≤ 0.19; fair: ≥ 0.2. The KT-1000 knee arthrometer was used to measure the side-to-side difference in the anterior tibial translation between the ACLR knee and the contralateral healthy knee in the ACLR group. RESULTS Reconstructed ACLs were found with a mean SNQ of 0.078 ± 0.061, while almost all ACL-reconstructed patients (97%; 33 out of 34) were found with excellent or good SNQ values (< 0.019). The mean KT-1000 in the ACLR group was 0.071 mm ± 0.926 mm, while there were no patients in the ACLR cohort with a KT-1000 value > 3 mm. The mean 9-months MRI-based SNQ of ACLR group was significantly higher compared to the mean MRI-based SNQ of the control group (p < 0.001). Multiple regression analysis showed no correlation between SNQ and age, gender, time from injury to ACLR, graft size, or simultaneous treatment of additional intra-articular knee lesions. CONCLUSIONS In this cohort of 34 ACL-reconstructed patients, 97% of hamstring tendon autografts demonstrated excellent/good MRI signal intensity and excellent functional results (KT-1000 < 3 mm) at 9 months after surgery. Based on this finding, it is suggested that return to sports after ACLR with hamstring autograft can be considered safe at 9 months post surgery. Furthermore, while structural integrity of the graft has been achieved at this time point, statistical differences found in SNQ values of ACL-reconstructed patients compared to ACLs of healthy individuals highlight the continuing process of graft maturation and remodelling. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Michael-Alexander Malahias
- Department of Orthopaedics and Traumatology, Clinical Ars Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland
| | - Francesco Maria Capece
- Department of Orthopaedics and Traumatology, Clinical Ars Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland. .,University of Rome 'Tor Vergata', Rome, Italy.
| | - Claudio Ballarati
- Department of Radiology, Clinical Ars Medica, Gravesano, Ticino, Switzerland
| | - Marco Viganò
- IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
| | - Marco Marano
- Department of Orthopaedics and Traumatology, Clinical Ars Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland
| | | | - Danilo Togninalli
- Department of Orthopaedics and Traumatology, Clinical Ars Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland
| | | | - Matteo Denti
- Department of Orthopaedics and Traumatology, Clinical Ars Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland.,IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
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8
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Lutz PM, Achtnich A, Schütte V, Woertler K, Imhoff AB, Willinger L. Anterior cruciate ligament autograft maturation on sequential postoperative MRI is not correlated with clinical outcome and anterior knee stability. Knee Surg Sports Traumatol Arthrosc 2022; 30:3258-3267. [PMID: 34739559 PMCID: PMC9464175 DOI: 10.1007/s00167-021-06777-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 10/18/2021] [Indexed: 01/22/2023]
Abstract
PURPOSE Magnetic resonance imaging (MRI) signal intensity is correlated to structural postoperative changes of the anterior cruciate ligament (ACL) autograft. The purpose of this study was to investigate the ACL autograft maturation process via MRI over 2 years postoperatively, compare it to a native ACL signal and correlate the results with clinical outcome, return to preinjury sports levels, and knee laxity measurements. METHODS ACL autograft signal intensity was measured in 17 male patients (age, 28.3 ± 7.0 years) who underwent ACL reconstruction with hamstring autograft at 6 weeks, 3-, 6-, 12-, and 24 months postoperatively by 3 Tesla MRI. Controls with an intact ACL served as control group (22 males, 8 females; age, 26.7 ± 6.8 years). An ACL/PCL ratio (APR) and ACL/muscle ratio (AMR) was calculated to normalize signals to soft tissue signal. APR and AMR were compared across time and to native ACL signal. Clinical outcome scores (IKDC, Lysholm), return to preinjury sports levels (Tegner activity scale), and knee laxity measurement (KT-1000) were obtained and correlated to APR and AMR at the respective time points. RESULTS The APR and AMR of the ACL graft changed significantly from the lowest values at 6 weeks to reach the highest intensity after 6 months (p < 0.001). Then, the APR and AMR were significantly different from a native ACL 6 months after surgery (p < 0.01) but approached the APR and AMR of the native ACL at 1- and 2 years after surgery (p < 0.05). The APR changed significantly during the first 2 years postoperatively in the proximal (p < 0.001), mid-substance (p < 0.001), and distal (p < 0.01) intraarticular portion of the ACL autograft. A hypo-intense ACL MRI signal was associated with return to the preinjury sports level (p < 0.05). No correlation was found between ACL MRI graft signal and clinical outcome scores or KT-1000 measurements. CONCLUSION ACL grafts undergo a continuous maturation process in the first 2 years after surgery. The ACL graft signals became hyper-intense 6 months postoperatively and approximated the signal of a native intact ACL at 12- and 24 months. Patients with a hypo-intense ACL graft signal at 2 years follow-up were more likely to return to preinjury sports levels. The results of the present study provide a template for monitoring the normal ACL maturation process via MRI in case of prolonged clinical symptoms. However, subjective outcome and clinical examination of knee laxity remain important to assess the treatment success and to allow to return to sports. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Patricia M. Lutz
- Department for Orthopedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Andrea Achtnich
- Department for Orthopedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Vincent Schütte
- Department for Orthopedic and Trauma Surgery, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Strasse 40, 06120 Halle (Saale), Germany
| | - Klaus Woertler
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Andreas B. Imhoff
- Department for Orthopedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Lukas Willinger
- Department for Orthopedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675 Munich, Germany
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9
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Sánchez Romero EA, Lim T, Alonso Pérez JL, Castaldo M, Martínez Lozano P, Villafañe JH. Identifying Clinical and MRI Characteristics Associated with Quality of Life in Patients with Anterior Cruciate Ligament Injury: Prognostic Factors for Long-Term. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:12845. [PMID: 34886570 PMCID: PMC8657193 DOI: 10.3390/ijerph182312845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/23/2021] [Accepted: 12/01/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Associated lesions in the diagnostic MRI may be related to worse long-term subjective outcomes. There is a lack of conclusive information about the long-term outcomes of associated injuries in anterior cruciate ligament (ACL) tears. The purpose of this study is to assess the long-term effects of associated injuries in ACL tears measured by means of a quality of life (QOL) assessment. METHODS A retrospective cohort study of 225 consecutive patients admitted for physical therapy with ACL injury (42 ± 12 years, 28.2% female) were conducted. All demographic and clinical variables were used to measure a QOL. Univariate and multivariable analyses were completed. RESULTS The mean follow-up period was 8.4 ± 2.6 years. In univariate analysis, male gender, and sports as the cause of the ACL lesion were factors significantly associated with improved International Knee Documentation Committee (IKDC) scores at the end of follow-up (all p < 0.002). In multivariable analysis, the occurrence of bone contusion was positively associated with injury (OR = 2.12) and negatively associated with sports injury (OR = 0.44) and medial collateral ligament (MCL) injury (OR = 0.48). CONCLUSIONS After ACL injury, male gender and sports injury were associated with better clinical outcomes.
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Affiliation(s)
- Eleuterio A. Sánchez Romero
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain; (T.L.); (J.L.A.P.); (P.M.L.)
- Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Health Sciences, Universidad Europea de Canarias, La Orotava, Tenerife, 38300 Canary Islands, Spain
- Department of Physiotherapy, Faculty of Health Sciences, Universidad Europea de Canarias, La Orotava, Tenerife, 38300 Canary Islands, Spain
| | - Tifanny Lim
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain; (T.L.); (J.L.A.P.); (P.M.L.)
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Health Sciences, Universidad Europea de Canarias, La Orotava, Tenerife, 38300 Canary Islands, Spain
| | - José Luis Alonso Pérez
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain; (T.L.); (J.L.A.P.); (P.M.L.)
- Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Health Sciences, Universidad Europea de Canarias, La Orotava, Tenerife, 38300 Canary Islands, Spain
- Department of Physiotherapy, Faculty of Health Sciences, Universidad Europea de Canarias, La Orotava, Tenerife, 38300 Canary Islands, Spain
- Onelifecenter, Multidisciplinary Pain Treatment Center, 28925 Madrid, Spain
| | - Matteo Castaldo
- Center for Neuroplasticity and Pain (CNAP), Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, 9220 Aalborg, Denmark;
- Sport Physiotherapy, University of Siena, 53100 Siena, Italy
| | - Pedro Martínez Lozano
- Musculoskeletal Pain and Motor Control Research Group, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain; (T.L.); (J.L.A.P.); (P.M.L.)
- Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Jorge Hugo Villafañe
- Instituto di Ricovero e Cura a Carettere Scientifico (IRCCS) Fondazione Don Carlo Gnocchi, 20141 Milan, Italy
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Affiliation(s)
| | - Fares S Haddad
- University College London Hospitals, The Princess Grace Hospital, and The NIHR Biomedical Research Centre at UCLH, London, UK.,The Bone & Joint Journal, London, UK
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