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Pamboris GM, Pavlou K, Paraskevopoulos E, Mohagheghi AA. Effect of open vs. closed kinetic chain exercises in ACL rehabilitation on knee joint pain, laxity, extensor muscles strength, and function: a systematic review with meta-analysis. Front Sports Act Living 2024; 6:1416690. [PMID: 38887689 PMCID: PMC11180725 DOI: 10.3389/fspor.2024.1416690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 05/20/2024] [Indexed: 06/20/2024] Open
Abstract
Anterior cruciate ligament (ACL) injuries are common among physically active individuals, often requiring ACL reconstruction (ACLR) for recovery. Rehabilitating these injuries involves determining the appropriate timing for initiating open kinetic chain (OKC) exercises. Although OKC exercises are effective post-ACLR, their use in rehabilitation remains a subject of debate. Therefore, this study aims to conduct a systematic review to determine whether OKC or closed kinetic chain (CKC) exercises result in differences in laxity, strength of the knee extensor muscle group, function, and functional performance in ACL rehabilitation. Five electronic databases were searched for randomized controlled between-group trials (RCTs). Two reviewers independently evaluated the risk of bias using the PEDro scale. We performed a meta-analysis using a random-effects model or calculated mean differences (fixed-effect) where appropriate. Certainty of evidence was judged using the GRADE approach. The systematic literature search yielded 480 articles, of which 9 met the inclusion criteria. The evidence for all outcomes ranged from very low to low certainty. Across all comparisons, inconsistent results were found in outcome measures related to knee function between OKC and CKC exercises post-ACLR. A significant increase in quadriceps isokinetic strength was found in post-ACLR and ACL-deficient knees in favor of OKC exercises at 3 (p = 0.03) and 4 (p = 0.008) months, respectively. A significant decrease in knee laxity was observed in ACL-deficient knees in favor of OKC at 10 weeks (p = 0.01), although inconsistency was noted at 4 months. Finally, a significant decrease in pain was found in favor of early OKC compared to late OKC (p < 0.003). Additionally, in ACL-deficient knees, low load resistance training (LLRT) OKC showed no significant laxity difference compared to controls (p > 0.05). In contrast, high load resistance training (HLRT) OKC had less laxity than controls at 6 weeks (p = 0.02) but not at 12 weeks (p > 0.05). OKC exercises appear to be superior to CKC for improving quadriceps strength 3-4 months post-injury, whether as a part of conservative or post-surgery rehabilitation. On the other hand, OKC exercises seem to be either superior or equally effective to CKC for improving knee laxity, thus presenting their importance in being included in a rehabilitation protocol from the initial phase. Systematic Review Registration PROSPERO [CRD42023475230].
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Affiliation(s)
- George M. Pamboris
- Department of Health Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Kyriakos Pavlou
- Department of Health Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Eleftherios Paraskevopoulos
- Department of Physiotherapy, Aegean College, Athens, Greece
- Laboratory of Biomechanics, Department of Physiotherapy, University of Peloponnese, Sparta, Greece
| | - Amir A. Mohagheghi
- Division of Sport, Health, and Exercise Sciences, Brunel University London, Uxbridge, United Kingdom
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Deiss V, Bähler P, Kolly P, Schärer A, Henle P, Eichelberger P, Lutz N, Baur H. Test-retest reliability and concurrent validity assessment of a novel high-frequency sensor device for anterior tibial translation measurement in loaded and unloaded condition: an exploratory cross-sectional study. BMC Musculoskelet Disord 2024; 25:218. [PMID: 38491405 PMCID: PMC10943913 DOI: 10.1186/s12891-024-07343-y] [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] [Received: 11/27/2023] [Accepted: 03/06/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND Magnetic resonance imaging (MRI) and manual tests remain the standard for diagnosing anterior cruciate ligament (ACL) rupture. Furthermore, the passive knee displacement, also described as anterior tibial translation (ATT), is used in order to make decisions about surgery or to assess rehabilitation outcomes. Unfortunately, these manual tests are limited to passive situations, and their application to assess knee stability in loaded, weight-bearing positions are missing. Therefore, a new device with high-performance sensors and a new sensor setting was developed. The aim of this exploratory cross-sectional study was to assess the test-retest reliability of this new device in a first step and the concurrent validity in a second step. METHODS A total of 20 healthy volunteers were measured. Measurement consistency of the new device was assessed on the basis of reliability during Lachman test setting and in loaded position by artificial knee perturbation in a test-retest procedure. In a second step, the concurrent validity was evaluated with the Lachmeter® as a reference instrument. Intraclass correlation coefficient (ICC), standard error of measurement (SEM), the minimal detectable change (MDC) and Bland-Altman analysis were evaluated to assess the quality criteria. RESULTS The measurements with the new device during the Lachman test provided a mean ATT of 5.46±2.22mm. The SEM ranged from 0.60 to 0.69mm resulting in an MDC between 1.67 and 1.93mm for the new device. In the loaded test situation, the mean ATT was 2.11±1.20mm, with test-retest reliability also showing good correlation (r>0.83). The comparison of the two measurement methods with an ICC of (r>0.89) showed good correlation, which also underlines the reasonable agreement of the Bland-Altman analysis. CONCLUSIONS The evaluation of the test-retest reliability of the new device during the knee stability testing in passive situation as well as in a functional, loaded situation presented good reliability. In addition, the new device demonstrated good agreement with the reference device and therefore good validity. Furthermore, the quality criteria demonstrated the ability of the new device to detect the cut-off value (3-5mm) described in the literature for the diagnosis of ACL-deficient knees, which underlines the clinical relevance of this new device as a reliable and valid tool.
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Affiliation(s)
- Valentin Deiss
- Department of Health Professions, Physiotherapy, Bern University of Applied Sciences, Bern, Switzerland.
| | - Philippe Bähler
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Biel, Switzerland
| | - Pascal Kolly
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Biel, Switzerland
| | - Anton Schärer
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Biel, Switzerland
| | - Philippe Henle
- Department of Knee Surgery and Sports Traumatology, Sonnenhof Orthopaedic Center, Bern, Switzerland
| | - Patric Eichelberger
- Department of Health Professions, Physiotherapy, Bern University of Applied Sciences, Bern, Switzerland
| | - Nathanael Lutz
- Department of Health Professions, Physiotherapy, Bern University of Applied Sciences, Bern, Switzerland
| | - Heiner Baur
- Department of Health Professions, Physiotherapy, Bern University of Applied Sciences, Bern, Switzerland
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Wu D, Zhao X, Wu B, Zhou L, Luo Y, Huang X, Xu W, Wang S. Subregional analysis of joint stiffness facilitates insight into ligamentous laxity after ACL injury. Front Bioeng Biotechnol 2023; 11:1298402. [PMID: 38188490 PMCID: PMC10771831 DOI: 10.3389/fbioe.2023.1298402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/13/2023] [Indexed: 01/09/2024] Open
Abstract
Purpose: Increased incidence of anterior cruciate ligament injuries has amplified the need for quantitative research in clinical and academic settings. We used a novel digital arthrometer to measure knee laxity in healthy people and patients with anterior cruciate ligament injuries. Changes in stiffness were also assessed to develop new indicators for detecting anterior cruciate ligament injury. The purpose of this study was to use arthrometer to measure the quantitative indicator of knee laxity, bringing clinicians a new perspective on how to identify injury to the ACL. Methods: In this cross-sectional study, anterior tibial displacement under continuous loading was measured using a novel digital arthrometer in 30 patients with unilateral anterior cruciate ligament injury and 30 healthy controls. Load-displacement curves were plotted, using real-time load and displacement changes. Stiffness was defined by the slope of the applied load to tibial displacement. Anterior tibial displacement and instantaneous stiffness values under different loads were compared. The restricting contribution of the anterior cruciate ligament transformed the displacement-stiffness curve from a sharp decrease to a stable increase, resulting in a minimum stiffness value. Using the minimum stiffness as the turning point, the load-displacement curve was divided into regions 1 and 2. The two regions' stiffness changes were compared. Based on the findings, receiver operating characteristic curves were plotted and the area under the curve was calculated to estimate the diagnostic accuracy. Results: Anterior tibial displacement was significantly greater in the anterior cruciate ligament injury group than in the controls under each 10-N increase load (p < 0.05). In the anterior cruciate ligament injury group, instantaneous stiffness was significantly lower on the injured side than on the healthy side (p < 0.05). In the two regions of the load-displacement curve, stiffness was significantly lower in the anterior cruciate ligament injury group than in the control group (all, p < 0.05). Receiver operating characteristic curves were plotted, using changes in stiffness under the two regions in both groups. Stiffness in region 2 had the largest area under the curve (0.94; 95% CI, 0.88-0.99). Using the cut-off value of 9.62 N/mm to detect ACL injury, the sensitivity and specificity were 93% and 82%, respectively. Conclusion: Our investigation of ligament stiffness provides novel insights into the properties of knee laxity. Stiffness in the later stages of increased loading <9.62 N/mm could be a valid indicator for identifying knee laxity.
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Affiliation(s)
- Danni Wu
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Xuan Zhao
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Bin Wu
- Department of Orthopedics, Changhai Hospital, The Navy Medical University, Shanghai, China
| | - Lan Zhou
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Ye Luo
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Xiaofan Huang
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Weidong Xu
- Department of Orthopedics, Changhai Hospital, The Navy Medical University, Shanghai, China
| | - Shaobai Wang
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
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Colosio A, Scaini A, Motta M, Paderno M, Saccomanno MF, Bettinsoli P, Bonaspetti G, Milano G. BLU-DAT: a new reliable and accurate arthrometer for measuring anterior knee laxity. Knee Surg Sports Traumatol Arthrosc 2023; 31:4782-4790. [PMID: 37553553 PMCID: PMC10598137 DOI: 10.1007/s00167-023-07534-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 07/28/2023] [Indexed: 08/10/2023]
Abstract
PURPOSE Although many arthrometers have been developed to assess anterior knee laxity, reliability and diagnostic accuracy of these devices are still debated. The aim of the present study was to evaluate the validity of a new arthrometer in the outpatient setting, with the hypothesis that it had good validity in terms of reliability and diagnostic accuracy. METHODS Seventy-eight subjects (39 with ACL injury and 39 with normal ACL) were tested. ATT was assessed by means of the Lachman test at 30° of flexion with a new testing device (BLU-DAT) under three different loading conditions: 7 kg (69 N), 9 kg (88 N) and maximum (MMT). The tests were performed on both knees to obtain SSD. In the ACL injury group, the tests were performed by two examiners and one of them repeated a second test series. Inter- and intra-observer reliability were assessed with the intraclass correlation coefficients (ICCs) for the average SSD measures. In the normal-ACL group, the analysis was performed with the same testing setup. Side-to-side difference measures of the two groups at every loading condition were compared by Student's t test. Data of test series were dichotomized based on the threshold value of 3-mm SSD as pathological ATT and 2 × 2 contingency tables were used to assess diagnostic accuracy. RESULTS The ICCs for intra-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.781, 0.855 and 0.913, respectively. The ICC for inter-observer reliability at 7-kg (69 N), 9-kg (88 N) and MMT measurements were 0.701, 0.845 and 0.834, respectively. Comparison between the two groups showed a significant mean difference ranging from 3.4 mm for 7-kg (69 N) load to 4.6 mm for MMT. Overall accuracy ranged from 84.6% for 7-kg load to 98.7% for MMT. CONCLUSION The BLU-DAT has proven to be an instrument with good intra- and inter-observer reliability and very good accuracy in the diagnosis of ACL injuries in the outpatient setting. So, the BLU-DAT can be a new useful tool in everyday clinical practice to assist in the diagnosis of ACL injury. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Alessandro Colosio
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- ASST Spedali Civili, UOC Clinica Ortopedica, Piazzale Spedali Civili 1, 25123 Brescia, BS Italy
| | - Alessandra Scaini
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
| | - Marcello Motta
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
| | - Marco Paderno
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
- ASST Spedali Civili, UOC Clinica Ortopedica, Piazzale Spedali Civili 1, 25123 Brescia, BS Italy
| | - Maristella F. Saccomanno
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
- ASST Spedali Civili, UOC Clinica Ortopedica, Piazzale Spedali Civili 1, 25123 Brescia, BS Italy
| | | | - Giovanni Bonaspetti
- Department of Orthopaedics and Traumatology, Clinica S. Anna, Brescia, Italy
| | - Giuseppe Milano
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
- Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
- ASST Spedali Civili, UOC Clinica Ortopedica, Piazzale Spedali Civili 1, 25123 Brescia, BS Italy
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Li J, Mao Y, Wang D, Fu W, Li Q, Tang X, Chen G, Chen X, Yao L, You M, Xiong Y, Li J. Correlation Between the Location and Distance of Kissing Contusions and Knee Laxity in Acute Noncontact ACL Injury. Am J Sports Med 2023; 51:3179-3189. [PMID: 37715506 DOI: 10.1177/03635465231196865] [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: 09/17/2023]
Abstract
BACKGROUND Bone bruise (BB) and kissing contusion are common features of acute anterior cruciate ligament (ACL) injury on magnetic resonance imaging (MRI). The correlation between the location and distance of kissing contusions and knee laxity remains unclear. PURPOSE To determine the significance of different patterns of BB in acute noncontact ACL injury and assess the correlation between the location and distance of kissing contusions and the severity of knee laxity. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS A total of 205 patients with acute noncontact ACL injury undergoing arthroscopic treatment between January 2021 and May 2022 were included in this retrospective analysis. Patients were grouped according to the different patterns of BB. The type of ACL injury and concomitant injuries were analyzed on MRI and confirmed by arthroscopy. Anterior knee laxity was assessed by the Ligs digital arthrometer and stress radiography, and rotational knee laxity was assessed by the intraoperative pivot-shift test. The MRI parameters of the location and distance of kissing contusions were measured to assess their correlations with the severity of knee laxity. RESULTS Of the 205 patients with acute noncontact ACL injury, 38 were in the non-BB group and 167 were in the BB group, the latter including 32 with the isolated BB on the lateral tibial plateau and 135 with kissing contusions. There was no significant difference in the mean time from initial injury to MRI scan between the non-BB group and the BB group (14.34 ± 2.92 vs 15.17 ± 2.86 days; P = .109) or between the isolated BB subgroup and the kissing contusion subgroup (14.94 ± 2.92 vs 15.23 ± 2.85 days; P = .605). The side-to-side difference (SSD) in anterior knee laxity and the incidences of complete ACL injury, concomitant injuries, and high-grade pivot-shift test were significantly higher in the BB group than in the non-BB group, and in the kissing contusion subgroup compared with the isolated BB subgroup. The kissing contusion index of the lateral femoral condyle (LFC) and the sagittal distance of kissing contusions were significantly correlated with the SSD in anterior knee laxity and the grade of pivot-shift test (P < .001). CONCLUSION The presence of BB, in particular the appearance of kissing contusions, was related to greater knee laxity and higher incidences of complete ACL injury and concomitant injuries in acute noncontact ACL injury. For patients with kissing contusions, as the location of BB on the LFC moved forward and the distance between kissing contusions increased, anterior and rotational knee laxity became more serious.
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Affiliation(s)
- Junqiao Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yunhe Mao
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Duan Wang
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Weili Fu
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Tang
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Gang Chen
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Xi Chen
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Yao
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Mingke You
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Xiong
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Jian Li
- Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Orthopedics and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
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Flannery SW, Murray MM, Badger GJ, Ecklund K, Kramer DE, Fleming BC, Kiapour AM. Early MRI-based quantitative outcomes are associated with a positive functional performance trajectory from 6 to 24 months post-ACL surgery. Knee Surg Sports Traumatol Arthrosc 2023; 31:1690-1698. [PMID: 35704062 PMCID: PMC9751233 DOI: 10.1007/s00167-022-07000-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 05/04/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Quantitative magnetic resonance imaging (qMRI) has been used to determine the failure properties of ACL grafts and native ACL repairs and/or restorations. How these properties relate to future clinical, functional, and patient-reported outcomes remain unknown. The study objective was to investigate the relationship between non-contemporaneous qMRI measures and traditional outcome measures following Bridge-Enhanced ACL Restoration (BEAR). It was hypothesized that qMRI parameters at 6 months would be associated with clinical, functional, and/or patient-reported outcomes at 6 months, 24 months, and changes from 6 to 24 months post-surgery. METHODS Data of BEAR patients (n = 65) from a randomized control trial of BEAR versus ACL reconstruction (BEAR II Trial; NCT02664545) were utilized retrospectively for the present analysis. Images were acquired using the Constructive Interference in Steady State (CISS) sequence at 6 months post-surgery. Single-leg hop test ratios, arthrometric knee laxity values, and International Knee Documentation Committee (IKDC) subjective scores were determined at 6 and 24 months post-surgery. The associations between traditional outcomes and MRI measures of normalized signal intensity, mean cross-sectional area (CSA), volume, and estimated failure load of the healing ACL were evaluated based on bivariate correlations and multivariable regression analyses, which considered the potential effects of age, sex, and body mass index. RESULTS CSA (r = 0.44, p = 0.01), volume (r = 0.44, p = 0.01), and estimated failure load (r = 0.48, p = 0.01) at 6 months were predictive of the change in single-leg hop ratio from 6 to 24 months in bivariate analysis. CSA (βstandardized = 0.42, p = 0.01), volume (βstandardized = 0.42, p = 0.01), and estimated failure load (βstandardized = 0.48, p = 0.01) remained significant predictors when considering the demographic variables. No significant associations were observed between MRI variables and either knee laxity or IKDC when adjusting for demographic variables. Signal intensity was also not significant at any timepoint. CONCLUSION The qMRI-based measures of CSA, volume, and estimated failure load were predictive of a positive functional outcome trajectory from 6 to 24 months post-surgery. These variables measured using qMRI at 6 months post-surgery could serve as prospective markers of the functional outcome trajectory from 6 to 24 months post-surgery, aiding in rehabilitation programming and return-to-sport decisions to improve surgical outcomes and reduce the risk of reinjury. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
- Sean W Flannery
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Martha M Murray
- Department of Orthopedic Surgery, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA, 02115, USA
| | - Gary J Badger
- Department of Medical Biostatistics, Larner College of Medicine, University of Vermont, Burlington, VT, USA
| | - Kirsten Ecklund
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Dennis E Kramer
- Department of Orthopedic Surgery, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA, 02115, USA
| | - Braden C Fleming
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Ata M Kiapour
- Department of Orthopedic Surgery, Boston Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA, 02115, USA.
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Li J, Tang J, Yao L, Fu W, Deng Q, Xiong Y, Li J. The validity of the Ligs digital arthrometer at different loads to evaluate complete ACL ruptures. Front Bioeng Biotechnol 2023; 11:1049100. [PMID: 36998807 PMCID: PMC10046814 DOI: 10.3389/fbioe.2023.1049100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/14/2023] [Indexed: 03/15/2023] Open
Abstract
Objective: The Ligs Digital Arthrometer is a recently launched versatile arthrometer that can be used for the quantitative assessment of knee and ankle joint laxity. This study aimed to evaluate the validity of the Ligs Digital Arthrometer for the diagnosis of complete anterior cruciate ligament (ACL) ruptures at different loads.Materials and Methods: From March 2020 to February 2021, we included 114 normal subjects and 132 subjects diagnosed with complete ACL ruptures by magnetic resonance imaging (MRI) and eventually confirmed by arthroscopy in the study. Anterior knee laxity was independently measured by the same physical therapist using the Ligs Digital Arthrometer. Recorded anterior knee laxity and calculated the side-to-side difference (SSD) at 30, 60, 90, 120, and 150 N loads, respectively. The receiver operating characteristic (ROC) curve was used to determine the optimal laxity threshold, and the diagnostic value was evaluated by the area under the curve (AUC).Results: The demographic data of the subjects were comparable between the two groups (p > 0.05). The mean values of anterior knee laxity measured by the Ligs Digital Arthrometer between the complete ACL ruptures group and the control group were significantly different at 30, 60, 90, 120, and 150 N loads (p < 0.001 for all). According to the results of ROC curve analysis, the optimal laxity threshold for the diagnosis of complete ACL ruptures was 1.1 mm SSD (Se = 66.7%, Sp = 69.3%) at 30 N, 1.3 mm (Se = 74.2%, Sp = 82.5%) at 60 N, 1.6 mm (Se = 79.5%, Sp = 94.7%) at 90 N, 1.9 mm (Se = 84.1%, Sp = 92.1%) at 120 N and 2.1 mm (Se = 85.6%, Sp = 91.2%) at 150 N. The AUC order at different loads from high to low was 150 N (0.948 [0.923–0.973])>120 N (0.933 [0.903–0.963])>90 N (0.902 [0.862–0.943])>60 N (0.846 [0.799–0.893])>30 N (0.720 [0.657–0.783]).Conclusion: The Ligs Digital Arthrometer proved to be of high diagnostic value in complete ACL ruptures at 90 N, 120 N, and 150 N loads. The diagnostic value improved with the increase of load in a certain range. Based on the results of this study, as a portable, digital and versatile new arthrometer, the Ligs Digital Arthrometer was a valid and promising tool for diagnosing complete ACL ruptures.
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Affiliation(s)
| | | | | | | | | | - Yan Xiong
- *Correspondence: Jian Li, ; Yan Xiong,
| | - Jian Li
- *Correspondence: Jian Li, ; Yan Xiong,
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Barnes DA, Flannery SW, Badger GJ, Yen YM, Micheli LJ, Kramer DE, Fadale PD, Hulstyn MJ, Owens BD, Murray MM, Fleming BC, Kiapour AM. Quantitative MRI Biomarkers to Predict Risk of Reinjury Within 2 Years After Bridge-Enhanced ACL Restoration. Am J Sports Med 2023; 51:413-421. [PMID: 36645042 PMCID: PMC9905304 DOI: 10.1177/03635465221142323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Quantitative magnetic resonance imaging (qMRI) methods were developed to establish the integrity of healing anterior cruciate ligaments (ACLs) and grafts. Whether qMRI variables predict risk of reinjury is unknown. PURPOSE To determine if qMRI measures at 6 to 9 months after bridge-enhanced ACL restoration (BEAR) can predict the risk of revision surgery within 2 years of the index procedure. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Originally, 124 patients underwent ACL restoration as part of the BEAR I, BEAR II, and BEAR III prospective trials and had consented to undergo an MRI of the surgical knee 6 to 9 months after surgery. Only 1 participant was lost to follow-up, and 4 did not undergo MRI, leaving a total of 119 patients for this study. qMRI techniques were used to determine the mean cross-sectional area; normalized signal intensity; and a qMRI-based predicted failure load, which was calculated using a prespecified equation based on cross-sectional area and normalized signal intensity. Patient-reported outcomes (International Knee Documentation Committee subjective score), clinical measures (hamstring strength, quadriceps strength, and side-to-side knee laxity), and functional outcomes (single-leg hop) were also measured at 6 to 9 months after surgery. Univariate and multivariable analyses were performed to determine the odds ratios (ORs) for revision surgery based on the qMRI and non-imaging variables. Patient age and medial posterior tibial slope values were included as covariates. RESULTS In total, 119 patients (97%), with a median age of 17.6 years, underwent MRI between 6 and 9 months postoperatively. Sixteen of 119 patients (13%) required revision ACL surgery. In univariate analyses, higher International Knee Documentation Committee subjective score at 6 to 9 months postoperatively (OR = 1.66 per 10-point increase; P = .035) and lower qMRI-based predicted failure load (OR = 0.66 per 100-N increase; P = .014) were associated with increased risk of revision surgery. In the multivariable model, when adjusted for age and posterior tibial slope, the qMRI-based predicted failure load was the only significant predictor of revision surgery (OR = 0.71 per 100 N; P = .044). CONCLUSION Quantitative MRI-based predicted failure load of the healing ACL was a significant predictor of the risk of revision within 2 years after BEAR surgery. The current findings highlight the potential utility of early qMRI in the postoperative management of patients undergoing the BEAR procedure.
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Affiliation(s)
- Dominique A. Barnes
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Sean W. Flannery
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Gary J. Badger
- Department of Medical Biostatistics, Larner College of
Medicine, University of Vermont, Burlington, VT, USA
| | - Yi-Meng Yen
- Department of Orthopaedic Surgery, Boston Children’s
Hospital, Harvard Medical School, Boston, MA, USA
| | - Lyle J. Micheli
- Department of Orthopaedic Surgery, Boston Children’s
Hospital, Harvard Medical School, Boston, MA, USA
| | - Dennis E. Kramer
- Department of Orthopaedic Surgery, Boston Children’s
Hospital, Harvard Medical School, Boston, MA, USA
| | - Paul D. Fadale
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Michael J. Hulstyn
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Brett D. Owens
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Martha M. Murray
- Department of Orthopaedic Surgery, Boston Children’s
Hospital, Harvard Medical School, Boston, MA, USA
| | - Braden C. Fleming
- Department of Orthopaedics, Warren Alpert Medical School of
Brown University/Rhode Island Hospital, Providence, RI, USA
| | - Ata M. Kiapour
- Department of Orthopaedic Surgery, Boston Children’s
Hospital, Harvard Medical School, Boston, MA, USA
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9
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Dietvorst M, van der Steen MCM, Reijman M, Janssen RPA. Diagnostic values of history taking, physical examination and KT-1000 arthrometer for suspect anterior cruciate ligament injuries in children and adolescents: a prospective diagnostic study. BMC Musculoskelet Disord 2022; 23:710. [PMID: 35883084 PMCID: PMC9317060 DOI: 10.1186/s12891-022-05659-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 07/12/2022] [Indexed: 11/22/2022] Open
Abstract
Background Diagnosing anterior cruciate ligament (ACL) injuries in children and adolescents are more challenging compared to adults. Delayed diagnosis may result in meniscal or chondral injuries. The aim of this study was to determine the diagnostic values of history taking, physical examination and KT-1000 arthrometer for suspect ACL injuries in children and adolescents. Methods In this prospective diagnostic study, all children and adolescents (< 18 years) with post-traumatic knee complaints presenting at the out-patient department of the Máxima MC were eligible for inclusion. One experienced knee specialised orthopaedic surgeon was blinded and performed history taking, physical examination and KT-1000 arthrometer measurement. All patients had a magnetic resonance imaging (MRI) for the final diagnosis. Diagnostic values of interest were sensitivity, specificity, positive and negative predictive values (PPV and NPV). The outcomes of the KT-1000 arthrometer were drafted in a relative operating characteristics (ROC) curve to determine the optimal cut-off points. Results Sixty-six patients were included, of which 50 had an ACL rupture and 16 had no ACL rupture on MRI. Report of a popping sensation during trauma had a specificity and PPV of 100% for diagnosing ACL injuries. The PPV and NPV of the Lachman test (in case of describing end-feel) were 95 and 82%, of the anterior drawer test 87 and 90% and of the pivot shift test 95 and 81% respectively. The optimal cut-off point of the KT-1000 arthrometer at 133 N force was an absolute translation of ≥7 mm with a PPV and NPV of 97 and 88% respectively. Conclusions Report of a popping sensation during trauma has a specificity and PPV of 100% for diagnosing ACL injuries in children and adolescents. Although potentially difficult in children, the Lachman test, anterior drawer test and pivot shift test have a high PPV and NPV when performed by an experienced orthopaedic surgeon. An absolute anterior translation of ≥7 mm of the injured knee in the KT-1000 arthrometer at 133 N has the highest diagnostic values of all tests for diagnosing ACL injuries. Level of evidence 3
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Affiliation(s)
- Martijn Dietvorst
- Department of Orthopedic Surgery and Trauma, Máxima MC, Eindhoven, the Netherlands.
| | - M C Marieke van der Steen
- Department of Orthopedic Surgery and Trauma, Máxima MC, Eindhoven, the Netherlands.,Department of Orthopedic Surgery and Trauma, Catharina Hospital Eindhoven, Eindhoven, the Netherlands
| | - Max Reijman
- Department of Orthopedic Surgery, Erasmus University MC, Rotterdam, the Netherlands
| | - Rob P A Janssen
- Department of Orthopedic Surgery and Trauma, Máxima MC, Eindhoven, the Netherlands.,Department of Biomedical Engineering, Orthopedic Biomechanics, Eindhoven University of Technology, Eindhoven, the Netherlands.,Department of Paramedical Sciences, Chair Value-Based Health Care, Fontys University of Applied Sciences, Eindhoven, the Netherlands
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10
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Oka S, Kawano S, Shimoda T, Hamachi N, Mitsutake T. Association between generalized joint laxity and knee joint movement in female university students. J Phys Ther Sci 2022; 34:131-134. [PMID: 35221516 PMCID: PMC8860693 DOI: 10.1589/jpts.34.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/13/2021] [Indexed: 11/25/2022] Open
Abstract
[Purpose] This study investigated the association between generalized joint laxity and
knee joint movement in female university students. [Participants and Methods] The study
included 21 female university students. Generalized joint laxity was measured using the
Beighton criteria for joint hypermobility. Acceleration and angular velocities of the
tibia during knee extension were measured along three axes using a triaxial accelerometer.
Sampling data were expressed as root mean squares. The Mann–Whitney U test was used to
determine differences in the acceleration and angular velocities along each axis between
the generalized joint laxity and non-generalized joint laxity groups. Spearman’s rank
correlations were used to confirm the association between these parameters. [Results] The
rotational angular velocity was greater in the generalized joint laxity than in the
non-generalized joint laxity group, and we observed a significant correlation between
Beighton scores and the X-axis angular velocity. Furthermore, rotational angular velocity
was positively correlated with anterior–posterior acceleration and extension angular
velocity. [Conclusion] These findings suggest that rotational angular velocity of the
tibia during knee extension is associated with generalized joint laxity in female
university students.
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Affiliation(s)
- Shinichiro Oka
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare: 137-1 Ohkawa, Fukuoka 831-8501, Japan
| | | | - Takeyoshi Shimoda
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare: 137-1 Ohkawa, Fukuoka 831-8501, Japan
| | - Nozomi Hamachi
- Department of Physical Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare: 137-1 Ohkawa, Fukuoka 831-8501, Japan
| | - Tsubasa Mitsutake
- Department of Physical Therapy, Fukuoka International University of Health and Welfare, Japan
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11
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Niu X, Mai H, Wu T, Jiang Y, Duan X, Liu M, Liu J, Ding L, Ao Y. Reliability of a Novel Automatic Knee Arthrometer for Measuring Knee Laxity After Anterior Cruciate Ligament Ruptures. Orthop J Sports Med 2022; 10:23259671211051301. [PMID: 35187181 PMCID: PMC8855393 DOI: 10.1177/23259671211051301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/14/2021] [Indexed: 11/20/2022] Open
Abstract
Background: The accuracy of existing devices for measuring knee laxity is adversely
affected by examiner reliability. Purpose: To compare the accuracy of a novel automatic knee arthrometer (AKA) to that
of the KT-2000 arthrometer for measuring knee laxity after anterior cruciate
ligament (ACL) ruptures. Study Design: Cohort study; Level of evidence, 2. Methods: We measured anterior displacement and the anterior displacement difference
(ADD) at 134 N of anterior force in 221 healthy volunteers and 200 patients
with ACL ruptures. All trials were performed by the same 2 examiners. We
first analyzed the effects of examiner, side assessed, and device type using
the intraclass correlation coefficient (ICC), t test, and
F test. We then used the receiver operating
characteristic curve to compare the diagnostic value of the measurements
between devices. Results: In repeated measurements for a single healthy volunteer, there were no
differences in the variance of the measurements between sides according to
the AKA (standard deviation of right vs left knee for examiner A: 0.43 vs
0.58 mm, respectively [P = .39]; for examiner B: 0.49 vs
0.77 mm, respectively [P = .81]), while the KT-2000
measurements showed differences (standard deviation of right vs left knee
for examiner A: 1.47 vs 0.80 mm, respectively [P = .02];
for examiner B: 1.78 vs 0.91 mm, respectively [P = .01]).
The ADD assessed by the AKA was not significantly different between
examiners A and B (0.50 vs 0.75 mm, respectively; P = .27;
ICC = 0.83), but the KT-2000 showed a difference (1.07 vs 2.01 mm,
respectively; P = .01; ICC = 0.55). The ADD of 20 healthy
volunteers assessed by the AKA was less than that by the KT-2000 (0.98 vs
1.41 mm, respectively; P = .04). When comparing the
diagnostic value of the 2 devices in the sample of 200 patients with ACL
ruptures and 200 healthy controls, the area under the receiver operating
characteristic curve for the AKA was larger than that for the KT-2000 (0.93
vs 0.87, respectively; P ≤ .01), and the threshold values
were 1.75 and 2.73 mm, respectively. Conclusion: The AKA can be used to determine the degree of knee laxity in ACL injuries
and to provide indications for treatment.
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Affiliation(s)
- Xingyue Niu
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
| | - Hemuti Mai
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
| | - Tong Wu
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
| | - Yanfang Jiang
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
| | - Xiaoning Duan
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
| | - Mengzhen Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Jingyu Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Li Ding
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yingfang Ao
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
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12
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Filbay S, Gauffin H, Andersson C, Kvist J. Prognostic factors for tibiofemoral and patellofemoral osteoarthritis 32-37 years after anterior cruciate ligament injury managed with early surgical repair or rehabilitation alone. Osteoarthritis Cartilage 2021; 29:1682-1690. [PMID: 34500106 DOI: 10.1016/j.joca.2021.08.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 08/23/2021] [Accepted: 08/29/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Explore prognostic factors for tibiofemoral (TFJ) and patellofemoral (PFJ) radiographic osteoarthritis (ROA) and 'symptoms plus ROA' (SOA), 32-37 years following anterior cruciate ligament (ACL) injury. DESIGN Exploratory analysis, longitudinal cohort. METHODS In 1980-1985, 251 patients aged 15-40 years with acute ACL rupture were allocated to early augmented or non-augmented repair (5 ± 4 days post-injury) plus rehabilitation, or rehabilitation alone. 127 of 190 participants who completed follow-up questionnaires were eligible. We classified ROA as TFJ/PFJ K&L Grade ≥2, and SOA as ROA plus pain and/or symptoms. Multivariable age-adjusted logistic regression investigated potential prognostic factors (assessed at 4 ± 1 year follow-up: ACL treatment, isokinetic quadriceps/hamstrings strength, single-leg-hop for distance, knee flexion/extension deficit, knee laxity, Tegner Activity Scale, Lysholm Scale; sex, baseline meniscus status). RESULTS 127 patients were aged 58 ± 6 years; BMI 27 ± 4 kg/m2; 28% female; 59% had TFJ-ROA, 48% had TFJ-SOA (including n = 9 knee-arthroplasties), 36% had PFJ-ROA; 27% had PFJ-SOA. Baseline meniscus surgery was a prognostic factor for TFJ-ROA (multivariable age-adjusted odds ratio (95% CI): 3.0 (1.2, 7.8)). A single-leg-hop limb symmetry index (LSI) < 90% was a prognostic factor for PFJ-ROA (5.1 (1.4, 18.7)) and PFJ-SOA (4.9 (1.2, 19.7)). Hamstrings strength LSI <90% was a prognostic factor for PFJ-SOA (5.0 (1.3, 19.3)). ACL treatment with rehabilitation-alone was associated with an 80% reduction in the odds of PFJ-SOA (0.2 (0.1-0.7)), compared with early ACL-repair. CONCLUSIONS These findings are hypothesis generating, research is needed to determine whether ACL-injured individuals with these characteristics benefit from interventions to prevent or delay the onset of osteoarthritis.
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Affiliation(s)
- S Filbay
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, Oxford, United Kingdom; University of Melbourne, Centre for Health Exercise and Sports Medicine, Department of Physiotherapy, Melbourne, Australia.
| | - H Gauffin
- Linköping University, Department of Biomedical and Clinical Sciences, Division of Surgery, Orthopaedics and Oncology, SE-581 83 Linköping, Sweden.
| | - C Andersson
- Linköping University, Department of Biomedical and Clinical Sciences, Division of Surgery, Orthopaedics and Oncology, SE-581 83 Linköping, Sweden.
| | - J Kvist
- Linköping University, Department of Health, Medicine and Caring Sciences, Division of Prevention, Rehabilitation and Community Medicine, Unit of Physiotherapy, SE-581 83 Linköping, Sweden.
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13
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Anterior Cruciate Ligament Revision Reconstruction. J Am Acad Orthop Surg 2021; 29:723-731. [PMID: 34096902 DOI: 10.5435/jaaos-d-21-00088] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 05/03/2021] [Indexed: 02/01/2023] Open
Abstract
Revision anterior cruciate ligament (ACL) reconstruction is used in patients with recurrent instability after primary ACL reconstruction. Identifying the etiology of graft failure is critical to the success of revision reconstruction. The most common etiologies include technical errors, trauma, failure to recognize concomitant injuries, young age, incomplete rehabilitation, and hardware failure. Patients should undergo a complete history and physical examination with a specific focus on previous injury mechanism and surgical procedures. A revision ACL reconstruction is a technically demanding procedure, and the surgeon should be prepared to address bone tunnel osteolysis, concurrent meniscal, ligamentous, or cartilage lesions, and limb malalignment. Surgical techniques described in this article include both single-stage and two-stage reconstruction procedures. Rates of return to sport after a revision reconstruction are lower than after primary reconstruction. Future research should be focused on improving both single-stage and two-stage revision techniques, as well as concomitant procedures to address limb malalignment and associated injuries.
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14
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Filbay S, Andersson C, Gauffin H, Kvist J. Prognostic Factors for Patient-Reported Outcomes at 32 to 37 Years After Surgical or Nonsurgical Management of Anterior Cruciate Ligament Injury. Orthop J Sports Med 2021; 9:23259671211021592. [PMID: 34395684 PMCID: PMC8361529 DOI: 10.1177/23259671211021592] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/24/2021] [Indexed: 01/16/2023] Open
Abstract
Background: Knowledge to inform the identification of individuals with a poor long-term prognosis after anterior cruciate ligament (ACL) injury is limited. Identifying prognostic factors for long-term outcomes after ACL injury may inform targeted interventions to improve outcomes for those with a poor long-term prognosis. Purpose: To determine whether ACL treatment (early augmented or nonaugmented ACL repair plus rehabilitation, rehabilitation alone, or rehabilitation plus delayed ACL reconstruction [ACLR]) and 4-year measures (quadriceps and hamstrings strength, single-leg hop, knee laxity, flexion and extension deficit, self-reported knee function, activity level) are prognostic factors for patient-reported outcomes at 32 to 37 years after acute ACL injury. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 251 patients aged 15 to 40 years with acute ACL rupture between 1980 and 1985 were allocated to early ACL repair (augmented or nonaugmented) plus rehabilitation or to rehabilitation alone, based on birth year. One hundred ninety of 234 completed 32- to 37-year follow-up questionnaires (response rate, 81%); 18 people were excluded, resulting in 172 patients available for analysis (mean age, 59 ± 6 years; 28% female). Potential prognostic factors assessed 4 years after ACL injury were ACL treatment (early ACL repair, rehabilitation alone, or delayed ACLR), isokinetic quadriceps and hamstrings strength, single-leg hop performance, knee flexion and extension deficit, knee laxity, Tegner activity scale, and Lysholm score. Outcomes included Knee injury and Osteoarthritis Outcome Score (KOOS) subscales and the Anterior Cruciate Ligament Quality of Life (ACL-QOL) measure. Linear regression adjusted for age, sex, baseline meniscal injury, and contralateral ACL injury was used to assess potential prognostic factors for 32- to 37-year outcomes. Multiple imputation accounted for missing data. Results: A fair/poor Lysholm score (vs excellent/good) at 4 years was a prognostic factor for worse KOOS Pain (adjusted regression coefficient, −12 [95% confidence interval (CI), −19 to −4]), KOOS Symptoms (−15 [95% CI, −23 to −7]), KOOS Sport and Recreation (−19 [95% CI, −31 to −8]), and ACL QOL (−9 [95% CI, −18 to −1]) scores. A 4-year single-leg hop limb symmetry index <90% was a prognostic factor for worse KOOS Pain (adjusted regression coefficient, −9 [95% CI, −17 to −1]) and ACL QOL (−13 [95% CI, −22 to −3]) scores at long-term follow-up. A lower activity level, delayed ACLR, and increased knee laxity were prognostic factors in the crude analysis. Rehabilitation alone versus early repair, quadriceps and hamstring strength, and flexion and extension deficit were not related to 32- to 37-year outcomes. Conclusion: Reduced self-reported knee function and single-leg hop performance 4 years after ACL injury were prognostic factors for worse 32- to 37-year outcomes. Estimates exceeded clinically important thresholds, highlighting the importance of assessing these constructs when managing individuals with ACL injuries. Registration: NCT03182647 (ClinicalTrials.gov identifier).
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Affiliation(s)
- Stephanie Filbay
- Centre for Health Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, Victoria, Australia
| | - Christer Andersson
- Division of Surgery, Orthopaedics and Oncology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Håkan Gauffin
- Division of Surgery, Orthopaedics and Oncology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Joanna Kvist
- Unit of Physiotherapy, Division of Prevention, Rehabilitation and Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
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15
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Büyükdoğan K, Laidlaw MS, Fox MA, Kew ME, Miller MD. Effect of Tibial Tunnel Placement Using the Lateral Meniscus as a Landmark on Clinical Outcomes of Anatomic Single-Bundle Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2021; 49:1451-1459. [PMID: 33830836 DOI: 10.1177/0363546521999672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND It remains unclear if use of the lateral meniscus anterior horn (LMAH) as a landmark will produce consistent tunnel positions in the anteroposterior (AP) distance across the tibial plateau. PURPOSE To evaluate the AP location of anterior cruciate ligament (ACL) reconstruction tibial tunnels utilizing the LMAH as an intra-articular landmark and to examine how tunnel placement affects knee stability and clinical outcomes. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS A retrospective review was conducted of 98 patients who underwent primary ACL reconstruction with quadrupled hamstring tendon autografts between March 2013 and June 2017. Patients with unilateral ACL injuries and a minimum follow-up of 2 years were included in the study. All guide pins for the tibial tunnel were placed using the posterior border of the LMAH as an intra-articular landmark. Guide pins were evaluated with the Bernard-Hertel grid in the femur and the Stäubli-Rauschning method in the tibia. Patients were divided by the radiographic location of the articular entry point of the guide pin with relation to the anterior 40% of the tibial plateau. Outcomes were evaluated by the Marx Activity Scale and International Knee Documentation Committee (IKDC) form. Anterior knee laxity was evaluated using a KT-1000 arthrometer and graded with the objective portion of the IKDC form. Rotational stability was evaluated using the pivot-shift test. RESULTS A total of 60 patients were available for follow-up at a mean 28.6 months. The overall percentage of AP placement of the tibial tunnel was 39.3% ± 3.8% (mean ± SD; range, 31%-47%). Side-to-side difference of anterior knee laxity was significantly lower in the anterior group than the posterior group (1.2 ± 1.1 mm vs 2.5 ± 1.3 mm; P < .001; r = 0.51). The percentage of AP placement of the tibial tunnel demonstrated a positive medium correlation with side-to-side difference of anterior knee laxity as measured by a KT-1000 arthrometer (r = 0.430; P < .001). The anterior group reported significantly better distribution of IKDC grading as compared with the posterior group (26 grade A and 6 grade B vs 15 grade A and 13 grade B; P = .043; V = 0.297). The pivot-shift test results and outcome scores showed no significant differences between the groups. CONCLUSION Using the posterior border of the LMAH as an intraoperative landmark yields a wide range of tibial tunnel locations along the tibial plateau, with anterior placement of the tibial tunnel leading toward improved anterior knee stability.
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Affiliation(s)
- Kadir Büyükdoğan
- Department of Orthopedic Surgery, Koc University Hospital, Zeytinburnu/Istanbul, Turkey
| | - Michael S Laidlaw
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Michael A Fox
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Michelle E Kew
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Mark D Miller
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA
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16
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Good Subjective Outcomes, Stable Knee and High Return to Sport after Tibial Eminence Avulsion Fracture in Children. CHILDREN-BASEL 2020; 7:children7100173. [PMID: 33050238 PMCID: PMC7601704 DOI: 10.3390/children7100173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 11/16/2022]
Abstract
Avulsion fracture of the tibial spine (TSA) is uncommon in children, although its incidence is increasing with the earlier practice of competitive sport activities. This study aims to report mid to long term outcomes in children who sustained a TSA, with a special focus on a return to sport activities. Skeletally immature patients with a TSA, treated in two orthopedic hospitals, were evaluated for range of motion and knee laxity using KT1000, KiRA and Rolimeter. The pediatric International Knee Documentation Committee score (Pedi-IKDC) and the Hospital for Special Surgery pediatric Functional Activity Brief Scale (Pedi-FABS) questionnaires were recorded during the latest visit. Forty-two children were included. Twenty-six were treated nonoperatively and 16 underwent surgery. At a mean follow-up of 6.9 ± 3.6 years, 36 patients completed the questionnaires and 23 patients were tested with arthrometers. Among them, 96% had normal knee laxity. The Pedi-IKDC score averaged 96.4 ± 5.7 points, while the mean Pedi-FABS was 22.2 ± 5.9 points, without statistically significant differences between groups. Twenty-eight patients (78%) returned to their previous level of sport activity (eight amateur, 13 competitive, seven elite athletes). Eight patients (22%) quit sport, mostly because of re-injury fear. If properly treated, pediatric TSAs achieve a high rate of successful healing, with complete restoration of knee stability and an early return to sport activities.
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17
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Seiber K, Bales C, Wörner E, Lee T, Safran MR. Assessment of the reliability of a non-invasive elbow valgus laxity measurement device. J Exp Orthop 2020; 7:74. [PMID: 32989568 PMCID: PMC7522144 DOI: 10.1186/s40634-020-00290-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/15/2020] [Indexed: 11/10/2022] Open
Abstract
Purpose The purpose of this study was to assess the reliability of a new objective measurement tool to measure the valgus stress laxity of the ulnar collateral ligament (UCL) of the elbow, the “Elbow Tester”. The anterior oblique portion of the ulnar collateral ligament (UCL) of the elbow is the primary static restraint to valgus stress during the overhead throwing motion. The main research question was if the “Elbow Tester” that we have developed was reliable and reproducible for further use in research and daily practice. Methods Three different examiners tested both elbows of 11 volunteers for UCL laxity. Each elbow was tested 5 times using a standard 2 Nm valgus load, and 3 times using a manual maximum valgus load. One examiner tested the volunteers again 1 week later. The outcomes of elbow valgus laxity were compared between examiners. The intraobserver reliability was assessed using an intraclass correlation coefficient (ICC) and interobserver reliability was also assessed with a mixed model repeated ANOVA test. Results The device demonstrated a high level of intraobserver reliability with both the 2 Nm valgus force and manual maximum valgus force, using a minimum of three trials as determined by an ICC > 0.9 for all examiners. The interobserver reliability was moderate using the 2 Nm valgus load with an ICC value of 0.72 and significant different outcomes of elbow valgus laxity amongst examiners (p < 0.01). A high interobserver reliability (ICC value of 0.90) was observed using manual maximum valgus force and no differences between outcomes (p > 0.53). Conclusion The noninvasive valgus elbow tester demonstrates high interobserver and intraobserver reliability using manual maximum valgus force and can be used for further research and daily practice.
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Affiliation(s)
- Kenneth Seiber
- Department of Orthopaedic Surgery, Stanford University, 430 Broadway, MC 6342, Redwood City, CA, 94063, USA
| | - Chris Bales
- Department of Orthopaedic Surgery, Stanford University, 430 Broadway, MC 6342, Redwood City, CA, 94063, USA
| | - Elisabeth Wörner
- Department of Orthopaedic Surgery, Stanford University, 430 Broadway, MC 6342, Redwood City, CA, 94063, USA.
| | - Thay Lee
- Orthopaedic Biomechanics Laboratory, Congress Medical Foundation, Pasadena, CA, USA
| | - Marc R Safran
- Department of Orthopaedic Surgery, Stanford University, 430 Broadway, MC 6342, Redwood City, CA, 94063, USA
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18
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Reliability of a Robotic Knee Testing Tool to Assess Rotational Stability of the Knee Joint in Healthy Female and Male Volunteers. SPORTS MEDICINE-OPEN 2020; 6:33. [PMID: 32748169 PMCID: PMC7399727 DOI: 10.1186/s40798-020-00266-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 07/24/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND Several clinical tests exist to assess knee laxity. Although these assessments are the predominant tools of diagnosis, they are subjective and rely on the experience of the clinician. The robotic knee testing (RKT) device has been developed to quantitatively and objectively measure rotational knee laxity. The purpose of this study was primarily to determine the intra-tester reliability of rotational knee laxity and slack, the amount of rotation occurring between the two turning points of the load deformation curve, measured by the RKT device and investigate the differences between female and male measurements. METHODS Ninety-one healthy and moderately active volunteers took part in the study, of which twenty-five participated in the reliability study. Tibial rotation was performed using a servomotor to a torque of 6 N m, while measurements of motion in all 6° of freedom were collected. Reliability measurements were collected over 5 days at similar times of the day. Intra-class correlation coefficient (ICC) values and standard error of measurement (SEM) were determined across the load deformation curves. Linear mixed effects modelling was used to further assess the reliability of the measurement of external and internal tibial rotation using features of the curve (internal/external rotational laxity and slack). Measurements of internal/external rotational laxity and slack were compared between the sexes using the Student t test. RESULTS Pointwise axial rotation measurements of the tibia had good reliability [ICC (2,1) 0.83-0.89], while reliability of the secondary motions ranged between poor and good [ICC (2,1) 0.31-0.89]. All SEMs were less than 0.3°. Most of the variation of the curve features were accounted for by inter-subject differences (56.2-77.8%) and showed moderate to good reliability. Comparison of the right legs of the sexes revealed that females had significantly larger amounts of internal rotation laxity (females 6.1 ± 1.3° vs males 5.6 ± 0.9°, p = 0.037), external rotation laxity (females 6.0 ± 1.6° vs males 5.0 ± 1.2°, p = 0.002) and slack (females 19.2 ± 4.2° vs males 16.6 ± 2.9°, p = 0.003). Similar results were seen within the left legs. CONCLUSIONS Overall, the RKT is a reliable and precise tool to assess the rotational laxity of the knee joint in healthy individuals. Finally, greater amounts of laxity and slack were also reported for females.
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Raggi F, Roberti di Sarsina T, Signorelli C, Marcheggiani Muccioli GM, Macchiarola L, Cucurnia I, Romagnoli M, Grassi A, Zaffagnini S. Triaxial accelerometer can quantify the Lachman test similarly to standard arthrometers. Knee Surg Sports Traumatol Arthrosc 2019; 27:2698-2703. [PMID: 30474693 DOI: 10.1007/s00167-018-5306-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 11/15/2018] [Indexed: 11/28/2022]
Abstract
PURPOSE To assess the relationship between the KiRA triaxial accelerometer and the KT-1000 measurements in the intact, anterior cruciate ligament (ACL) deficient, and ACL reconstructed knee joint for the quantification of the Lachman test. Moreover, the intra- and inter-examiner repeatability of the KiRA device will be determined. It was hypothesized that the side-to-side difference of the anterior tibial translation as measured by the KiRA device would be equivalent to the one measured by the KT-1000 during the Lachman test. METHODS Sixty patients were divided into three groups and have been prospectively included in the present study. Group_A composed of 20 patients with a diagnosis of an isolated ACL tear. Group_B composed of 20 patients who underwent ACL reconstruction with a Single-Bundle Lateral Plasty (SBLP) technique with at least 20 years of follow-up. Group_C was the control group and included 20 patients with no history of ACL lesion. Lachman test has been performed at manual-maximum load on both sides, the involved and the contralateral and analyzed with the two different devices. RESULTS The KiRA device in terms of side-to-side difference resulted not statistically different from the measurement of the KT-1000 arthrometer for the three study groups (n.s): Group_A: (4 ± 2 mm KiRA, 4 ± 2 mm KT1000), Group_B: (4 ± 2 mm KiRA, 4 ± 2 mm KT-1000), Group_C: (4 ± 2 mm KiRA, 4 ± 2 mm KT-1000), an excellent intra- (ICC = 0.88-0.89) and inter-examiner (ICC = 0.79) agreement was found for KiRA measurements. CONCLUSION The KiRA (I+, Italy) device offers a valid method to quantify the Lacham test. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Federico Raggi
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Tommaso Roberti di Sarsina
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Cecilia Signorelli
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy. .,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.
| | - Giulio Maria Marcheggiani Muccioli
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Luca Macchiarola
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Ilaria Cucurnia
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Matteo Romagnoli
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Alberto Grassi
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
| | - Stefano Zaffagnini
- Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.,Laboratorio di Biomeccanica e Innovazione Tecnologica, Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via U. Foscolo 7, Bologna, BO, Italy
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Lee JCY, Yung PSH, Lam MH, Hung ASL, Fong DTP, Chan WY, Chan KM. A non-invasive biomechanical device to quantify knee rotational laxity: Verification of the device in human cadaveric specimens. Asia Pac J Sports Med Arthrosc Rehabil Technol 2019; 16:19-23. [PMID: 30984559 PMCID: PMC6445399 DOI: 10.1016/j.asmart.2018.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/02/2018] [Accepted: 11/21/2018] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Biomechanical measurement tools have been developed and widely used to precisely quantify knee anterior-posterior laxity after anterior cruciate ligament (ACL) injury. However, validated objective device to document knee rotational laxity, though being developed by different researchers, are not yet widely used in the daily clinical practice. A new biomechanical device was developed to quantify knee internal and external rotations. METHODS The reliability of the new biomechanical device which measures knee rotations were tested. Different torques (1-10Nm) were applied by the device to internally and externally rotate human cadaveric knees, which were held in a flexion angle of 30°. The rotations were measured by the device in degrees. There were two independent testers, and each tester carried out three trials. Intra-rater and inter-rater reliability were quantified in terms of intraclass correlation (ICC) coefficient among trials and between testers. The device was verified by the comparison with a computer assisted navigation system. ICC was measured. Mean, standard deviation and 95% confident interval of the difference as well as the root mean square difference were calculated. The correlations were deemed to be reliable if the ICC was above 0.75. RESULTS The intra-rater and inter-rater reliability achieved high correlation for both internal and external rotation, ranged from 0.959 to 0.992. ICC between the proposed meter and the navigation system for both internal and external rotation was 0.78. The mean differences were 2.3° and 2.5° for internal and external rotation respectively. CONCLUSIONS A new knee rotational laxity meter was proposed in this study. Its reliability was verified by showing high correlation among trials. It also showed good correlation to a gold standard of measurement. It might be used to document knee rotational laxity for various purposes, especially after ACL injury, after further validation of the device in human subjects.
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Affiliation(s)
- Jeffrey Chun-Yin Lee
- Department of Orthopaedics and Traumatology, Tuen Mun Hospital, Hong Kong, China
| | - Patrick Shu-Hang Yung
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- The Hong Kong Jockey Club Sports Medicine and Health Sciences Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Mak-Ham Lam
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- The Hong Kong Jockey Club Sports Medicine and Health Sciences Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Aaron See-Long Hung
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- The Hong Kong Jockey Club Sports Medicine and Health Sciences Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Daniel Tik-Pui Fong
- National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Wood Yee Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Kai-Ming Chan
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- The Hong Kong Jockey Club Sports Medicine and Health Sciences Centre, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
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The clinical relevance of PCL index on the reconstruction of anterior cruciate ligament with hamstring tendon autograft. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2018; 29:111-117. [PMID: 30101360 DOI: 10.1007/s00590-018-2292-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 08/05/2018] [Indexed: 10/28/2022]
Abstract
The posterior cruciate ligament index (PCL index) has been reported as a diagnostic and prognostic marker for anterior cruciate ligament (ACL) reconstruction. The clinical relevance of PCL index on the reconstruction of ACL with hamstring tendon autograft has not been described in the literature. The objective of this study is to evaluate the importance of the PCL index as a marker of anatomic reconstruction and of functional improvement of patients undergoing ACL reconstruction with HT autograft. Twenty-four patients were submitted to ACL reconstruction with HT autograft. The PCL index was assessed by magnetic resonance imaging before and after surgery. The functional evaluation was performed through the International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form© and Knee Society Knee Scoring System© (IKS). Patients presented a significant positive variation of the PCL index, IKDC and IKS scores. There is no significant correlation between PCL index variation and IKDC and IKS scores (p > 0.05). Unlike other studies reporting a relationship between the PCL index, control of rotational kinematics, and functional improvement in patients undergoing ACL reconstruction with bone-patellar tendon-bone autograft, this study does not demonstrate this association. There is evidence in this study to show that the PCL index may be used as an anatomic reconstructive marker of ACL but not to predict the clinical outcome in this type of reconstruction.
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Marcheggiani Muccioli GM, Signorelli C, Grassi A, Sarsina TRD, Raggi F, Carbone G, Macchiarola L, Vaccari V, Zaffagnini S. In-vivo pivot-shift test measured with inertial sensors correlates with the IKDC grade. J ISAKOS 2018. [DOI: 10.1136/jisakos-2017-000167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Anterior tibial laxity using the GNRB® device in healthy knees. Knee 2018; 25:34-39. [PMID: 29307479 DOI: 10.1016/j.knee.2017.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 12/29/2016] [Accepted: 03/13/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND GRNB® is a non-radiating power tool that allows the evaluation of the anterior tibial translation. HYPOTHESIS The pressure exerted by the system against the patella and the body mass index (BMI) could affect the anterior tibial translation when we repeat the measurements in healthy knees. MATERIALS AND METHODS We retrospectively evaluated the measurements of anterior knee laxity in healthy knees carried out by the GNRB® in 69 consecutive patients who underwent anterior cruciate ligament (ACL) repair in the contralateral knee. Two measurements were carried out, the initial measurements (M1), and then repeated at a mean of seven months (M2) (4.9 to 13months). RESULTS There were 38 women and 31 men with an average age of 31years. In healthy knees, the Mean average anterior translation was 5.4±4mm with an average patellar force of 35.8 at time M1. The average anterior translation was 4.9±4mm with an average patellar force of 47 at time M2. There was a significant difference between the measurements M1 and M2 (P<0.03). The tightening force was significantly different between the two sets of measurements (P<10-7). There was a negative correlation between the pressure applied on the patella and anterior knee laxity (P<0.01). CONCLUSION The pressure force exerted on the patella during GNRB® affects the measurement of anterior laxity in healthy knees. This raises the problem of the reproducibility of the measurements during repeated examinations at different times.
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Davis BR, Chen J, Inacio MCS, Love R, Prentice HA, Maletis GB. The Incidence of Subsequent Meniscal Surgery Is Higher in the Anterior Cruciate Ligament-Reconstructed Knee Than in the Contralateral Knee. Am J Sports Med 2017; 45:3216-3222. [PMID: 28846442 DOI: 10.1177/0363546517721685] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND A goal of anterior cruciate ligament (ACL) reconstruction is to provide a meniscal protective effect for the knee. PURPOSE (1) To evaluate whether there was a different likelihood of subsequent meniscal surgery in the ACL-reconstructed knee or in the normal contralateral knee and (2) to compare the risk factors associated with subsequent meniscal surgery in the ACL-reconstructed knee and contralateral knee. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Using an integrated health care system's ACL reconstruction registry, patients undergoing primary ACL reconstruction, with no meniscal injury at the time of index surgery and a normal contralateral knee, were evaluated. Subsequent meniscal tears associated with ACL graft revision were excluded. Subsequent meniscal surgery in either knee was the outcome of interest. Sex, age, and graft type were assessed as potential risk factors. Survival analysis was used to compare meniscal surgery-free survival rates and to assess risk factors of subsequent meniscal surgery. RESULTS Of 4087 patients, there were 32 (0.78%) patients who underwent subsequent meniscal surgery in the index knee and 9 (0.22%) in the contralateral knee. The meniscal surgery-free survival rate at 4 years was 99.08% (95% CI, 98.64%-99.37%) in the index knee and 99.65% (95% CI, 99.31%-99.82%) in the contralateral knee. There was a 3.73 (95% CI, 1.73-8.04; P < .001) higher risk of subsequent meniscal surgery in the index knee compared with the contralateral knee, or a 0.57% absolute risk difference. After adjustments, allografts (hazard ratio [HR], 5.06; 95% CI, 1.80-14.23; P = .002) and hamstring autografts (HR, 3.11; 95% CI, 1.06-9.10; P = .038) were risk factors for subsequent meniscal surgery in the index knee compared with bone-patellar tendon-bone (BPTB) autografts. CONCLUSION After ACL reconstruction, the overall risk of subsequent meniscal surgery was low. However, the relative risk of subsequent meniscal surgery in the ACL-reconstructed knee was higher compared with the contralateral knee. Only graft type was found to be a risk factor for subsequent meniscal surgery in the ACL-reconstructed knee, with a higher risk for allografts and hamstring autografts compared with BPTB autografts.
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Affiliation(s)
- Brent R Davis
- Southern California Permanente Medical Group, Irvine, California, USA
| | - Jason Chen
- Surgical Outcomes and Analysis Department, Kaiser Permanente, San Diego, California, USA
| | - Maria C S Inacio
- Surgical Outcomes and Analysis Department, Kaiser Permanente, San Diego, California, USA
| | - Rebecca Love
- Surgical Outcomes and Analysis Department, Kaiser Permanente, San Diego, California, USA
| | - Heather A Prentice
- Surgical Outcomes and Analysis Department, Kaiser Permanente, San Diego, California, USA
| | - Gregory B Maletis
- Southern California Permanente Medical Group, Baldwin Park, California, USA
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Ericsson D, Östenberg AH, Andersson E, Alricsson M. Test-retest reliability of repeated knee laxity measurements in the acute phase following a knee trauma using a Rolimeter. J Exerc Rehabil 2017; 13:550-558. [PMID: 29114530 PMCID: PMC5667602 DOI: 10.12965/jer.1735104.552] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/08/2017] [Indexed: 11/22/2022] Open
Abstract
The purpose was to examine the test-retest reliability of the Rolimeter measurement procedure in the acute time phase, following a substantial knee trauma. In total, 15 participants with acute knee trauma were examined by one single observer at three different time-points with the Rolimeter using a maximum force. The selected time-points were: baseline (0–7 days after the trauma), midpoint (3–4 weeks after the trauma), and endpoint (3–4 weeks after the trauma). The anterior-posterior displacement was recorded where the endpoint evaluation was used as the reference value. The mean anterior laxity scores remained constant over the measurement time-points for both knees, with an anterior laxity that was 2.7 mm higher (on average) in the injured than the noninjured knee (9.5 mm vs. 6.8 mm). The mean difference (i.e., bias) between laxity scores, for the injured knee, measured at endpoint versus baseline was 0.2±1.0 mm and −0.2±1.1 mm when measured at endpoint versus midpoint, with average typical errors of 0.7 and 0.8 mm and intra-class correlations that were very strong (both r=~0.93). For the same comparisons on the noninjured knee, systematic bias was close to zero (0.1±0.3 and −0.1±0.3 mm, respectively), and both the intra-class correlations were almost perfect (r=~0.99). The current study implicates that repeated Rolimeter measurements are relatively reliable for quantifying anterior knee laxity during the acute time-phases following knee trauma. Hence, the Rolimeter, in combination with manual tests, seems to be a valuable tool for identifying anterior cruciate ligament injuries.
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Affiliation(s)
- Daniel Ericsson
- Department of Sports Science, Linnaeus University, Kalmar/Växjö, Sweden
| | | | - Erik Andersson
- Swedish Winter Sport Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden
| | - Marie Alricsson
- Department of Sports Science, Linnaeus University, Kalmar/Växjö, Sweden.,Swedish Winter Sport Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden
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Branch TP, Stinton SK, Siebold R, Freedberg HI, Jacobs CA, Hutton WC. Assessment of knee laxity using a robotic testing device: a comparison to the manual clinical knee examination. Knee Surg Sports Traumatol Arthrosc 2017; 25:2460-2467. [PMID: 26704793 PMCID: PMC5522506 DOI: 10.1007/s00167-015-3935-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 12/09/2015] [Indexed: 01/25/2023]
Abstract
PURPOSE The purpose of this study was to collect knee laxity data using a robotic testing device. The data collected were then compared to the results obtained from manual clinical examination. METHODS Two human cadavers were studied. A medial collateral ligament (MCL) tear was simulated in the left knee of cadaver 1, and a posterolateral corner (PLC) injury was simulated in the right knee of cadaver 2. Contralateral knees were left intact. Five blinded examiners carried out manual clinical examination on the knees. Laxity grades and a diagnosis were recorded. Using a robotic knee device which can measure knee laxity in three planes of motion: anterior-posterior, internal-external tibia rotation, and varus-valgus, quantitative data were obtained to document tibial motion relative to the femur. RESULTS One of the five examiners correctly diagnosed the MCL injury. Robotic testing showed a 1.7° larger valgus angle, 3° greater tibial internal rotation, and lower endpoint stiffness (11.1 vs. 24.6 Nm/°) in the MCL-injured knee during varus-valgus testing when compared to the intact knee and 4.9 mm greater medial tibial translation during rotational testing. Two of the five examiners correctly diagnosed the PLC injury, while the other examiners diagnosed an MCL tear. The PLC-injured knee demonstrated 4.1 mm more lateral tibial translation and 2.2 mm more posterior tibial translation during varus-valgus testing when compared to the intact knee. CONCLUSIONS The robotic testing device was able to provide objective numerical data that reflected differences between the injured knees and the uninjured knees in both cadavers. The examiners that performed the manual clinical examination on the cadaver knees proved to be poor at diagnosing the injuries. Robotic testing could act as an adjunct to the manual clinical examination by supplying numbers that could improve diagnosis of knee injury. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
| | | | | | | | | | - W. C. Hutton
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA USA
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Drenck TC, Akoto R, Meenen NM, Heitmann M, Preiss A, Frosch KH. Ligamentäre Kniegelenkverletzungen im Wachstumsalter. Unfallchirurg 2016; 119:581-97. [DOI: 10.1007/s00113-016-0202-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rohman EM, Macalena JA. Anterior cruciate ligament assessment using arthrometry and stress imaging. Curr Rev Musculoskelet Med 2016; 9:130-8. [PMID: 26984335 DOI: 10.1007/s12178-016-9331-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Arthrometry and stress imaging are useful clinical tools for the objective assessment of anterior cruciate ligament (ACL) integrity. They are most frequently used for the diagnosis of a complete ACL tear when other workup is equivocal, in conjunction with history and clinical exam findings. Other applications include the diagnosis of partial ACL tears, injury prognosis, and post-operative monitoring. However, further studies are needed to validate these uses. Many different devices and techniques exist for objective examination, which have been compared in recent literature. Reliability and validity measures of these methods vary, and often depend upon examiner familiarity and skill. The KT series of devices is the current gold standard for arthrometry, although the newer robotic GNRB device shows promising early results. Newer methods of data interpretation have been developed for stress imaging, and portable technology may impact this field further.
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Affiliation(s)
- Eric M Rohman
- Department of Orthopaedic Surgery, University of Minnesota, 2450 Riverside Ave. S, Suite R200, Minneapolis, MN, 55454, USA
| | - Jeffrey A Macalena
- Department of Orthopaedic Surgery, University of Minnesota, 2450 Riverside Ave. S, Suite R200, Minneapolis, MN, 55454, USA.
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Mouton C, Theisen D, Seil R. Objective measurements of static anterior and rotational knee laxity. Curr Rev Musculoskelet Med 2016; 9:139-47. [PMID: 26970758 PMCID: PMC4896875 DOI: 10.1007/s12178-016-9332-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Several devices allow to measure anterior and rotational static knee laxity. To date, the use of rotational laxity measurements in the daily clinical practice however remains to be improved. These measurements may be systematically integrated to the follow-up of knee injuries. Physiologic laxity measurements may particularly be of interest for the identification of risk factors in athletes. Furthermore, knee laxity measurements help to improve the diagnosis of knee soft tissue injuries and to follow up reconstructions. Further prospective follow-ups of knee laxity in the injured/reconstructed knees are however required to conclude on the best treatment strategy for knee soft tissue injuries.
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Affiliation(s)
- Caroline Mouton
- Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Daniel Theisen
- Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Romain Seil
- Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg City, Luxembourg.
- Department of Orthopaedic Surgery, Centre Hospitalier de Luxembourg-Clinique d'Eich, 76, rue d'Eich, L-1460, Luxembourg City, Luxembourg.
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Anderson MJ, Browning WM, Urband CE, Kluczynski MA, Bisson LJ. A Systematic Summary of Systematic Reviews on the Topic of the Anterior Cruciate Ligament. Orthop J Sports Med 2016; 4:2325967116634074. [PMID: 27047983 PMCID: PMC4794976 DOI: 10.1177/2325967116634074] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND There has been a substantial increase in the amount of systematic reviews and meta-analyses published on the anterior cruciate ligament (ACL). PURPOSE To quantify the number of systematic reviews and meta-analyses published on the ACL in the past decade and to provide an overall summary of this literature. STUDY DESIGN Systematic review; Level of evidence, 4. METHODS A systematic review of all ACL-related systematic reviews and meta-analyses published between January 2004 and September 2014 was performed using PubMed, MEDLINE, and the Cochrane Database. Narrative reviews and non-English articles were excluded. RESULTS A total of 1031 articles were found, of which 240 met the inclusion criteria. Included articles were summarized and divided into 17 topics: anatomy, epidemiology, prevention, associated injuries, diagnosis, operative versus nonoperative management, graft choice, surgical technique, fixation methods, computer-assisted surgery, platelet-rich plasma, rehabilitation, return to play, outcomes assessment, arthritis, complications, and miscellaneous. CONCLUSION A summary of systematic reviews on the ACL can supply the surgeon with a single source for the most up-to-date synthesis of the literature.
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Affiliation(s)
| | | | | | | | - Leslie J. Bisson
- The State University of New York at Buffalo, Buffalo, New York, USA
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Kopkow C, Lange T, Hoyer A, Lützner J, Schmitt J. Physical tests for diagnosing anterior cruciate ligament rupture. Hippokratia 2015. [DOI: 10.1002/14651858.cd011925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Kopkow
- Faculty of Medicine Carl Gustav Carus, TU Dresden; Center for Evidence-Based Healthcare; Fetscherstr. 74 Dresden Saxony Germany 01307
| | - Toni Lange
- Faculty of Medicine Carl Gustav Carus, TU Dresden; Center for Evidence-Based Healthcare; Fetscherstr. 74 Dresden Saxony Germany 01307
| | - Annika Hoyer
- German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich Heine University Düsseldorf; Institute for Biometry and Epidemiology; Auf´m Hennekamp 65 Düsseldorf Germany 40225
| | - Jörg Lützner
- University Hospital Carl Gustav Carus; Centre for Orthopaedic and Trauma Surgery; Fetscherstr. 74 Dresden Saxony Germany 01307
| | - Jochen Schmitt
- Faculty of Medicine Carl Gustav Carus, TU Dresden; Center for Evidence-Based Healthcare; Fetscherstr. 74 Dresden Saxony Germany 01307
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van Eck CF, Widhalm H, Murawski C, Fu FH. Individualized anatomic anterior cruciate ligament reconstruction. PHYSICIAN SPORTSMED 2015; 43:87-92. [PMID: 25684559 DOI: 10.1080/00913847.2015.1005545] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Anterior cruciate ligament (ACL) injuries are often seen in young participants in sports such as soccer, football, and basketball. Treatment options include conservative management as well as surgical intervention, with the goal of enabling the patient to return to cutting and pivoting sports and activities. Individualized anatomic ACL reconstruction is a surgical technique that tailors the procedure to the individual patient using preoperative measurements on plain radiographs and magnetic resonance imaging and intraoperative measurement to map the patients' native ACL anatomy in order to replicate it as closely as possible. Anatomic ACL reconstruction, therefore, is defined as reconstruction of the ACL to its native dimensions, collagen orientation, and insertion site. The surgical reconstruction is followed by a specific rehabilitation protocol that is designed to enable the patient to regain muscle strength and proprioception while facilitating healing of the reconstructed ACL prior to the patient's returning to sports activities.
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Affiliation(s)
- Carola F van Eck
- Department of Orthopaedic Surgery, University of Pittsburgh , Pittsburgh, PA , USA
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Combined anterior and rotational laxity measurements allow characterizing personal knee laxity profiles in healthy individuals. Knee Surg Sports Traumatol Arthrosc 2015; 23:3571-7. [PMID: 25155050 PMCID: PMC4661198 DOI: 10.1007/s00167-014-3244-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 08/13/2014] [Indexed: 11/19/2022]
Abstract
PURPOSE The aim of this study was to quantify sagittal and rotational knee laxity profiles taking into account individual influencing factors. METHODS Linear regression models were used to determine which individual characteristics (age, height, body mass and sex) influenced the outcome in a group of 104 healthy subjects. The standardized residuals were used as individualized (corrected) laxity scores and were combined to determine knee laxity profiles. RESULTS Anterior knee laxity was not influenced by individual characteristics. Rotational knee laxity was higher in females and inversely related to body mass. The correlation between anterior laxity and internal rotation scores was weak (r = 0.24, p = 0.02). The proportion of knees concerned by increased laxity scores (scores >1) was similar for anterior displacement, internal and external rotation (15 %). Only 32 % of the tested subjects showed a normal profile (score >-1 and <1) for all three directions, 33 % were concerned by hyperlaxity, 40 % by hypolaxity and 5 % by both. CONCLUSIONS The diversity of laxity profiles found here highlights that the interpretation of multidirectional knee laxity is complex and suggests the necessity for individualized care of knee diseases and injuries. These results contribute to the understanding of knee laxity and throw the basis for prevention strategies and improvement of treatment outcomes in injuries and diseases. LEVEL OF EVIDENCE Case series with no comparison groups, Level IV.
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Abstract
PURPOSE The purpose of this retrospective case report was to describe clinical decision making during the examination and treatment of a 5-year-old boy with an anterior cruciate ligament (ACL) tear. KEY POINTS A paucity of research exists for the management of ACL tears in children. A combination of manual therapy interventions initially, followed by a unique and comprehensive therapeutic exercise program, was implemented during the course of a 3-month treatment period. Improvements in range of motion, quadriceps strength, single-leg stance time, and the Knee Injury and Osteoarthritis Outcome Score were noted. At discharge, the patient safely returned to unrestricted home and school activities. CONCLUSION This case demonstrates successful management of a child after an ACL injury. CLINICAL IMPLICATIONS Clinicians are encouraged to implement sound clinical reasoning in the absence of well-established evidence when treating similar patients in their clinical practice.
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van Eck CF, Fu FH. Anatomic anterior cruciate ligament reconstruction using an individualized approach. ASIA-PACIFIC JOURNAL OF SPORT MEDICINE ARTHROSCOPY REHABILITATION AND TECHNOLOGY 2014. [DOI: 10.1016/j.asmart.2013.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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