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Berumen-Nafarrate E, Ramos-Moctezuma IR, Sigala-González LR, Quintana-Trejo FN, Tonche-Ramos JJ, Portillo-Ortiz NK, Cañedo-Figueroa CE, Aguirre-Madrid A. Mobile App for Enhanced Anterior Cruciate Ligament (ACL) Assessment in Conscious Subjects: "Pivot-Shift Meter". J Pers Med 2024; 14:651. [PMID: 38929873 PMCID: PMC11204776 DOI: 10.3390/jpm14060651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 05/31/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Anterior cruciate ligament (ACL) instability poses a considerable challenge in traumatology and orthopedic medicine, demanding precise diagnostics for optimal treatment. The pivot-shift test, a pivotal assessment tool, relies on subjective interpretation, emphasizing the need for supplementary imaging. This study addresses this limitation by introducing a machine learning classification algorithm integrated into a mobile application, leveraging smartphones' built-in inertial sensors for dynamic rotational stability assessment during knee examinations. Orthopedic specialists conducted knee evaluations on a cohort of 52 subjects, yielding valuable insights. Quantitative analyses, employing the Intraclass Correlation Coefficient (ICC), demonstrated robust agreement in both intraobserver and interobserver assessments. Specifically, ICC values of 0.94 reflected strong concordance in the timing between maneuvers, while signal amplitude exhibited consistency, with the ICC ranging from 0.71 to 0.66. The introduced machine learning algorithms proved effective, accurately classifying 90% of cases exhibiting joint hypermobility. These quantifiable results underscore the algorithm's reliability in assessing knee stability. This study emphasizes the practicality and effectiveness of implementing machine learning algorithms within a mobile application, showcasing its potential as a valuable tool for categorizing signals captured by smartphone inertial sensors during the pivot-shift test.
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Affiliation(s)
- Edmundo Berumen-Nafarrate
- Star Medica Chihuahua Hospital, Perif. de la Juventud 6103, Fracc. El Saucito, Chihuahua 31110, Mexico
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Ivan Rene Ramos-Moctezuma
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Luis Raúl Sigala-González
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Fatima Norely Quintana-Trejo
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Jesus Javier Tonche-Ramos
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Nadia Karina Portillo-Ortiz
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Carlos Eduardo Cañedo-Figueroa
- Faculty of Medicine and Biomedical Sciences, University Autonomous of Chihuahua (UACH), Chihuahua 31110, Mexico; (I.R.R.-M.); (L.R.S.-G.); (F.N.Q.-T.); (J.J.T.-R.); (N.K.P.-O.); (C.E.C.-F.)
| | - Arturo Aguirre-Madrid
- Department of Orthopedic Surgery, Star Medica Chihuahua Hospital, Perif. de la Juventud 6103, Fracc. El Saucito, Chihuahua 31110, Mexico;
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Jones EN, Post HK, Stovall BA, Ierulli VK, Vopat BG, Mulcahey MK. Lateral Extra-articular Tenodesis Augmentation of Anterior Cruciate Ligament Reconstruction Is Most Commonly Indicated for Pivot Shift of Grade 2 or Greater and for Revision Anterior Cruciate Ligament Reconstruction. Arthroscopy 2024:S0749-8063(24)00085-9. [PMID: 38331370 DOI: 10.1016/j.arthro.2024.01.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/14/2024] [Accepted: 01/25/2024] [Indexed: 02/10/2024]
Abstract
PURPOSE To determine the most common indications for lateral extra-articular tenodesis (LET) augmentation of anterior cruciate ligament reconstruction (ACLR). METHODS A systematic review of the literature was performed using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We searched PubMed, Embase, Web of Science, and Cochrane Database of Systematic Reviews from 2000 to the present (June 2022). Studies that met the following criteria were included: patients of any age who underwent LET in addition to ACLR, studies reporting at least 1 indication for LET, and observational/randomized controlled trial study designs including prevalence of indications. Publications had to be reported in English and peer reviewed and to have originated in the United States or countries offering identical protocols and procedures. RESULTS A total of 463 studies were identified from the initial search, 23 of which met inclusion criteria and were included in the review. Eight of the 23 studies (34.8%) used a modified Lemaire technique, seven (30.4%) used a MacIntosh modified by Arnold-Coker, and eight (34.8%) used other techniques to perform LET. A total of 2,125 patients (53% female, 47% male [3 studies did not report sex]) underwent ACLR augmented with LET. The indications along with prevalence were as follows: positive pivot shift test (grade ≥2) (19 of 23, 82.6%), revision ACLR (12 of 23, 52.2%), ligamentous laxity (11 of 23, 47.8%), general sports participation (11 of 23, 47.8%), age less than 25 years (8 of 23, 34.8%), high risk of graft failure (5 of 23, 21.7%), and positive Lachman test (4 of 23, 17.4%). CONCLUSIONS Pivot shift grade ≥2 was the most common reason orthopaedic surgeons chose to add LET to ACLR, with revision ACLR, patient age <25, and general sports participation following closely behind. LEVEL OF EVIDENCE Level I to IV, systematic review of studies.
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Affiliation(s)
- Emily N Jones
- Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Hunter K Post
- Department of Orthopedic Surgery and Sports Medicine, University of Kansas School of Medicine, Kansas City, Kansas, U.S.A
| | - Bailey A Stovall
- Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Victoria K Ierulli
- Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Bryan G Vopat
- Department of Orthopedic Surgery and Sports Medicine, University of Kansas School of Medicine, Kansas City, Kansas, U.S.A
| | - Mary K Mulcahey
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois, U.S.A..
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Zhang ZY, Yin Y, Bai WB, Shi WL, Pan XY, Huang HJ, Zhang X, Wang C, Wang JQ. Association of Concomitant MRI-Determined Anterolateral Complex Injury With Quantitative Measurements of Altered Rotational Tibiofemoral Position on MRI in Patients With ACL Injury. Orthop J Sports Med 2024; 12:23259671241230954. [PMID: 38414665 PMCID: PMC10898314 DOI: 10.1177/23259671241230954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 08/21/2023] [Indexed: 02/29/2024] Open
Abstract
Background Reduced graft failure rates have been reported after anterior cruciate ligament (ACL) reconstruction combined with anterolateral complex (ALC) augmentation. However, the preoperative diagnosis of concomitant ALC injury remains a clinical challenge. Purpose To identify the altered rotational tibiofemoral position on magnetic resonance imaging (MRI) in ACL-injured patients with concomitant ALC injury. Study Design Cross-sectional study; Level of evidence, 3. Methods Based on the evaluation of ALC abnormalities on MRI scans by experienced surgeons, 123 patients with nonchronic (<3 months) ACL injury confirmed by arthroscopy were included. The patients were divided into 2 groups-an ALC-injured group (n = 57) and an ALC-intact group (n = 66). The altered rotational tibiofemoral position was evaluated and compared by quantitatively measuring internal rotational tibial subluxation (IRTS) and axial internal tibial rotation (ITRa) on MRI. Multivariate logistic regression and receiver operating characteristic (ROC) analyses were performed to identify the factors associated with concomitant MRI-determined ALC injury. Results The ALC-injured group showed significantly increased IRTS (P < .001), ITRa (P < .001), lateral anterior tibial subluxation (ATS) (P < .001), and global ATS (GATS) (P = .002) compared with the ALC-intact group, while no significant difference in medial ATS (P = .810) was observed. A strong positive correlation was identified between IRTS and ITRa (rP = 0.809; P < .001). Multivariate analyses revealed that IRTS (P < .001) and GATS (P = .016) were associated factors for the presence of concomitant MRI-determined ALC injury. IRTS (area under the curve [AUC] = 0.734) was more strongly associated with the outcome than GATS (AUC = 0.658) in ROC analyses, suggesting a more significant internal rotational subluxation than anterior subluxation of the tibia. An IRTS threshold of 3.1 mm demonstrated a specificity of 84.2% for indicating the presence of concomitant MRI-determined ALC injury. Conclusion The presence of concomitant MRI-determined ALC injury in ACL-injured patients was associated with a significant increase in IRTS and ITRa compared with those with intact ALC, indicating that these MRI measurements of the altered rotational tibiofemoral position could serve as potential quantifiable indicators for identifying concomitant ALC injury in clinical practice.
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Affiliation(s)
- Zhi-Yu Zhang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yu Yin
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Wen-Bin Bai
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Wei-Li Shi
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Xiao-Yu Pan
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA. Z.Z. and Y.Y. contributed equally to this article. C.W. and J.W. contributed equally to this article
| | - Hong-Jie Huang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Xin Zhang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Cheng Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jian-Quan Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University; Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
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Stranger N, Kaulfersch C, Mattiassich G, Mandl J, Hausbrandt PA, Szolar D, Schöllnast H, Tillich M. Frequency of anterolateral ligament tears and ramp lesions in patients with anterior cruciate ligament tears and associated injuries indicative for these lesions-a retrospective MRI analysis. Eur Radiol 2023; 33:4833-4841. [PMID: 36806565 PMCID: PMC10290041 DOI: 10.1007/s00330-023-09444-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 01/10/2023] [Accepted: 01/18/2023] [Indexed: 02/21/2023]
Abstract
OBJECTIVES To assess the frequency of anterolateral ligament (ALL) tears and ramp lesions (RL) detected with MRI in patients with anterior cruciate ligament (ACL) tears and to describe associated injuries indicative for these lesions. METHODS In this retrospective study, 164 patients with surgically verified ACL tears were included. Preoperative MRI scans were reviewed for ALL tears and different types of RL. All coexisting meniscal tears, tears of the medial (MCL) and lateral collateral band (LCL), and posterior-medial tibial bone marrow edema (BME) were recorded. The frequency of ALL tears and RL was assessed and coexisting injuries were correlated using Pearson's chi-square test. A p < 0.05 was defined as statistically significant. In cases of multiple testing, Bonferroni's correction was applied. RESULTS ALL tears and RL combined were detected in 28 patients (17.1%), ALL tears in 48 patients (29.3%), and RL in 54 patients (32.9%) which were significantly associated to each other. ALL tears were significantly associated with tears of the posterior horn of the lateral meniscus (PHLM), BME, and with tears of the LCL and MCL. RL were significantly associated with tears of the posterior horn of the medial (PHMM) and PHLM, with BME, and with tears of the LCL. CONCLUSIONS ACL tears are associated with RL or ALL tears in about one-third of cases and with both lesions combined in about one-fifth of cases. ALL tears and RL are significantly associated with additional posttraumatic injuries, which can thus be indicative of these lesions. KEY POINTS • ACL tears were associated with ramp lesions or ALL tears in about one-third of the cases. • Ramp lesions and ALL tears were significantly associated with each other, tear in the PHLM, tear in the LCL, and BME. • ALL tears were more frequently associated with instable classified ramp lesion type 4b and type 5.
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Affiliation(s)
- Nikolaus Stranger
- Division of General Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - Christian Kaulfersch
- Department of Trauma Surgery, Klinik Diakonissen Schladming, Schladming, Austria
| | - Georg Mattiassich
- Department of Trauma Surgery, Klinik Diakonissen Schladming, Schladming, Austria
| | | | | | | | - Helmut Schöllnast
- Division of General Radiology, Department of Radiology, Medical University of Graz, Graz, Austria.
- Institute of Radiology, LKH Graz II, Göstinger Strasse 22, 8020, Graz, Austria.
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Yañez-Diaz R, Roby M, Silvestre R, Zamorano H, Vergara F, Sandoval C, Neira A, Yañez-Rojo C, De la Fuente C. Multiclass Support Vector Machine improves the Pivot-shift grading from Gerdy's acceleration resultant prior to the acute Anterior Cruciate Ligament surgery. Injury 2023:S0020-1383(23)00271-1. [PMID: 37003872 DOI: 10.1016/j.injury.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/02/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023]
Abstract
INTRODUCTION Rotatory laxity acceleration still lacks objective classification due to interval grading superposition, resulting in a biased pivot shift grading prior to the Anterior Cruciate Ligament (ACL) reconstruction. However, data analysis might help improve data grading in the operative room. Therefore, we described the improvement of the pivot-shift categorization in Gerdy's acceleration under anesthesia prior to ACL surgery using a support vector machine (SVM) classification, surgeon, and literature reference. METHODS Seventy-five patients (aged 30.3 ± 10.2 years, and IKDC 52.0 ± 16.5 points) with acute ACL rupture under anesthesia prior to ACL surgery were analyzed. Patients were graded with pivot-shift sign glide (+), clunk (++), and (+++) gross by senior orthopedic surgeons. At the same time, the tri-axial tibial plateau acceleration was measured. Categorical data were statistically described, and the accelerometry and categorical data were associated (α = 5%). A multiclass SVM kernel with the best accuracy trained by orthopedic surgeons and assisted from literature for missing data was compared with experienced surgeons and literature interval grading. The cubic SVM classifier achieved the best grading. RESULTS The intra-group proportions were different for each grading in the three compared strategies (p < 0.001). The inter-group proportions were different for all comparisons (p < 0.001). There were significant (p < 0.001) associations (Tau: 0.69, -0.28, and -0.50) between the surgeon and SVM, the surgeon and interval grading, and the interval and SVM, respectively. CONCLUSION The multiclass SVM classifier improves the acceleration categorization of the (+), (++), and (+++) pivot shift sign prior to the ACL surgery in agreement with surgeon criteria.
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Affiliation(s)
- Roberto Yañez-Diaz
- Traumatologia, Clinica MEDS, Santiago, Chile; Centro de Innovación, Clinica MEDS, Santiago Chile
| | - Matías Roby
- Traumatologia, Clinica MEDS, Santiago, Chile; Centro de Innovación, Clinica MEDS, Santiago Chile
| | - Rony Silvestre
- Centro de Innovación, Clinica MEDS, Santiago Chile; Carrera de Kinesiologia, Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | | | | | | | - Alejandro Neira
- Escuela de Kinesiologia, Facultad de Medicina y Ciencias de la Salud, Universidad Mayor, Santiago, Chile
| | | | - Carlos De la Fuente
- Centro de Innovación, Clinica MEDS, Santiago Chile; Carrera de Kinesiologia, Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile; Applied Neuromechanics Research Group, Universidade Federal do Pampa, Uruguaiana, RS, Brazil.
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Figueroa F, Figueroa D, Guiloff R, Putnis S, Fritsch B, Itriago M. Navigation in anterior cruciate ligament reconstruction: State of the art. J ISAKOS 2023; 8:47-53. [PMID: 36179977 DOI: 10.1016/j.jisako.2022.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/15/2022] [Accepted: 09/17/2022] [Indexed: 11/16/2022]
Abstract
Computer navigation (CN) for anterior cruciate ligament (ACL) surgery has been used mainly for two purposes: to enhance the accuracy of tunnel position and to evaluate the kinematics of the ACL reconstruction (ACLR) and the stability achieved by different surgical techniques. Many studies have shown that navigation may improve the accuracy of anatomical tunnel orientation and position during ACL reconstructive surgery compared with normal arthroscopic tunnel placement, especially regarding the femoral side. At the same time, it has become the gold-standard method for intraoperative knee kinematic assessment, as it permits a quantitative multidirectional knee joint laxity evaluation. CN in ACL surgery has been associated with diverse problems. First, in most optic systems additional skin incisions and drill holes in the femoral bone are required for fixation of a reference frame to the femur. Second, additional radiation exposure and extra medical cost to the patient for preoperative planning are usually needed. Third, CN, due to additional steps, has more opportunities for error during preoperative planning, intraoperative registration, and operation. Fourth, soft tissues, including the skin and subcutaneous tissues, are usually not considered during the preoperative planning, which can be a problem for kinematic and stability assessment. Many studies have concluded that ACLR using a CN system is more expensive than conventional surgery, it adds extra time to the surgery and it is not mitigated by better clinical outcomes. This, combined with costs and invasiveness, has limited the use of CN to research-related cases. Future technology should prioritize less invasive intra-operative surgical navigation.
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Affiliation(s)
- Francisco Figueroa
- Clinica Alemana-Universidad del Desarrollo, Av Vitacura 5951, Vitacura, Santiago, 7650568, Chile; Hospital Sotero del Rio, Avenida Concha y Toro 3459, Puente Alto, Santiago, 8207257, Chile.
| | - David Figueroa
- Clinica Alemana-Universidad del Desarrollo, Av Vitacura 5951, Vitacura, Santiago, 7650568, Chile.
| | - Rodrigo Guiloff
- Clinica Alemana-Universidad del Desarrollo, Av Vitacura 5951, Vitacura, Santiago, 7650568, Chile; Hospital Sotero del Rio, Avenida Concha y Toro 3459, Puente Alto, Santiago, 8207257, Chile.
| | - Sven Putnis
- Southmead Hospital, Southmead Rd, Bristol, BS10 5NB, UK.
| | - Brett Fritsch
- Sydney Orthopaedic Research Institute, The Gallery, Level 1/445 Victoria Ave, Chatswood, NSW, 2067, Australia.
| | - Minerva Itriago
- Clinica Alemana-Universidad del Desarrollo, Av Vitacura 5951, Vitacura, Santiago, 7650568, Chile.
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Costa GG, Perelli S, Grassi A, Russo A, Zaffagnini S, Monllau JC. Minimizing the risk of graft failure after anterior cruciate ligament reconstruction in athletes. A narrative review of the current evidence. J Exp Orthop 2022; 9:26. [PMID: 35292870 PMCID: PMC8924335 DOI: 10.1186/s40634-022-00461-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/28/2022] [Indexed: 01/11/2023] Open
Abstract
Anterior cruciate ligament (ACL) tear is one of the most common sport-related injuries and the request for ACL reconstructions is increasing nowadays. Unfortunately, ACL graft failures are reported in up to 34.2% in athletes, representing a traumatic and career-threatening event. It can be convenient to understand the various risk factors for ACL failure, in order to properly inform the patients about the expected outcomes and to minimize the chance of poor results. In literature, a multitude of studies have been performed on the failure risks after ACL reconstruction, but the huge amount of data may generate much confusion.The aim of this review is to resume the data collected from literature on the risk of graft failure after ACL reconstruction in athletes, focusing on the following three key points: individuate the predisposing factors to ACL reconstruction failure, analyze surgical aspects which may have significant impact on outcomes, highlight the current criteria regarding safe return to sport after ACL reconstruction.
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Affiliation(s)
- Giuseppe Gianluca Costa
- Orthopaedic and Traumatologic Unit, Umberto I Hospital, Azienda Sanitaria Provinciale di Enna, C.da Ferrante, 94100, Enna, Italy. .,Knee and Arthroscopy Unit, Institut Catalá de Traumatologia I Medicina de L'Esport (ICATME), Hospital Universitari Quiron Dexeus, Universitat Autonoma de Barcelona, Barcelona, Catalunya, Spain.
| | - Simone Perelli
- Knee and Arthroscopy Unit, Institut Catalá de Traumatologia I Medicina de L'Esport (ICATME), Hospital Universitari Quiron Dexeus, Universitat Autonoma de Barcelona, Barcelona, Catalunya, Spain.,Department of Surgery and Morphologic Science, Orthopaedic Surgery Service, Universitat Autonoma de Barcelona, Hospital Del Mar, Barcelona, Spain
| | - Alberto Grassi
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Arcangelo Russo
- Orthopaedic and Traumatologic Unit, Umberto I Hospital, Azienda Sanitaria Provinciale di Enna, C.da Ferrante, 94100, Enna, Italy
| | - Stefano Zaffagnini
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Juan Carlos Monllau
- Knee and Arthroscopy Unit, Institut Catalá de Traumatologia I Medicina de L'Esport (ICATME), Hospital Universitari Quiron Dexeus, Universitat Autonoma de Barcelona, Barcelona, Catalunya, Spain.,Department of Surgery and Morphologic Science, Orthopaedic Surgery Service, Universitat Autonoma de Barcelona, Hospital Del Mar, Barcelona, Spain
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Noyes FR, Huser LE, Palmer M. A Biomechanical Study of Pivot-Shift and Lachman Translations in Anterior Cruciate Ligament-Sectioned Knees, Anterior Cruciate Ligament-Reconstructed Knees, and Knees With Partial Anterior Cruciate Ligament Graft Slackening: Instrumented Lachman Tests Statistically Correlate and Supplement Subjective Pivot-Shift Tests. Arthroscopy 2021; 37:672-681. [PMID: 33065214 DOI: 10.1016/j.arthro.2020.09.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine the statistical and predictive correlation between instrumented Lachman and pivot-shift tests with progressive loss of anterior cruciate ligament (ACL) function. METHODS The kinematic correlations between pivot-shift and Lachman anterior tibial translations (ATTs) in ACL-deficient and ACL-reconstructed states and in partially lax ACL grafts were determined with precise robotic testing in cadaveric knees. The Lachman test (100-N anteroposterior) and 2 pivot-shift loadings were conducted: anterior tibial loading (100 N), valgus rotation (7 Nm), and internal rotation (5 Nm and 1 Nm). The tibia was digitized to study the resulting medial, central, and lateral tibiofemoral compartment translations. In group 1 knees, 15 bone-patellar tendon-bone reconstructions were first tested, followed by ACL graft loosening with 3- and 5-mm increases in Lachman ATT. In group 2, 43 knees underwent robotic testing before and after ACL sectioning and underwent analysis of the effect of 3- and 5-mm increases in Lachman ATT and complete ACL sectioning on pivot-shift compartment translations. RESULTS In group 1 knees, ACL graft loosening allowing a 3-mm increase in Lachman ATT resulted in increases in pivot-shift lateral compartment translation (lateral compartment ATT) of only 1.6 ± 0.3 mm and 2.2 ± 1.0 mm (internal rotation of 5 Nm and 1 Nm, respectively) that were one-half of those required for a positive pivot-shift test finding. In group 2, for a 3-mm increased Lachman test, there were no positive pivot-shift values. In both groups, a Lachman test with an increase in ATT of 3 mm or less (100 N) had a 100% predictive value for a negative pivot-shift test finding. With ACL graft loosening and a 5-mm increase in the Lachman ATT, group 1 still had no positive pivot-shift values, and in group 2, a positive pivot-shift test finding occurred in 3 of 43 knees (7%, pivot shift 1-Nm internal rotation). After ACL sectioning, a highly predictive correlation was found between abnormal increases in Lachman and pivot-shift translations (P < .001). CONCLUSIONS ACL graft slackening and an instrumented Lachman test with an increase in ATT of 3 mm or less were 100% predictive of a negative pivot-shift subluxation finding and retained ACL stability. Further graft slackening and a 5-mm increase in the Lachman ATT produced pivot-shift lateral compartment ATT increases still less than the values in the ACL-deficient state; however, 7% of the knees (3 of 43) were converted to a positive pivot-shift test finding indicative of ACL graft failure. CLINICAL RELEVANCE Instrumented Lachman tests provide objective data on ACL function and graft failure to supplement subjective pivot-shift tests and are highly recommended for single-center and multicenter ACL studies. In the past decade, a near majority of published ACL studies no longer reported on instrumented Lachman tests, relying solely on highly subjective pivot-shift grading by multiple examiners.
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Affiliation(s)
- Frank R Noyes
- Cincinnati Sportsmedicine and Orthopaedic Center-Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A..
| | - Lauren E Huser
- Cincinnati Sportsmedicine and Orthopaedic Center-Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
| | - Michael Palmer
- Cincinnati Sportsmedicine and Orthopaedic Center-Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
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Vaidya RK, Yoo CW, Lee J, Han HS, Lee MC, Ro DH. Quantitative assessment of the pivot shift test with smartphone accelerometer. Knee Surg Sports Traumatol Arthrosc 2020; 28:2494-2501. [PMID: 31840191 DOI: 10.1007/s00167-019-05826-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 12/10/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE The pivot shift (PS) test is commonly used to diagnose and evaluate the dynamic instability of the knee joint in cases of anterior cruciate ligament (ACL) tear. There is a need of a reliable and inexpensive tool which is easily available to measure PS objectively in a clinical setting. The purpose of this study was to evaluate the use of a smartphone, which is readily available, to assess the PS phenomenon. METHODS Seventeen patients with unilateral ACL-injured knees, undergoing ACL reconstruction, were enrolled in the study. PS was initially graded according to the International Knee Documentation Committee classification by two observers. The PS test was then performed by them in normal and injured knees under anaesthesia using a smartphone attached to Gerdy's tubercle. Acceleration changes during the PS test were recorded using the smartphone accelerometer application. Intra-observer and inter-observer reliability of the test among the two observers were evaluated. Acceleration changes were compared between the injured and normal knees, and also between the clinical grades of PS. Diagnostic utility of the smartphone accelerometer was examined by a receiver operating characteristic curve analysis. RESULTS Intra-observer and inter-observer reliability were high for the smartphone accelerometer. The acceleration change was higher in the ACL-injured knees than in normal knees. The mean acceleration change was 2.54 m/s2 (SD = 0.97) in ACL-injured knees and 0.73 m/s2 (SD = 0.19) in normal knees (p < 0.001). The mean acceleration change of Grade 1 knees was 1.89 m/s2 (SD = 0.57), and that of knees of Grade 2 and above were 2.99 m/s2 (SD = 0.95) (p < 0.05). Sensitivity was 94% and specificity was 100% for the acceleration change required to detect ACL injury, i.e., 1.24 m/s2. CONCLUSIONS The results show that a smartphone can be used to evaluate the PS quantitatively and reliably, in the diagnosis of ACL injury. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Rupesh Kumar Vaidya
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Cheol Whan Yoo
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Joonhee Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Hyuk-Soo Han
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Myung Chul Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Du Hyun Ro
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea.
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10
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Kim SH, Park YB, Ham DW, Lim JW, Lee HJ. Stress radiography at 30° of knee flexion is a reliable evaluation tool for high-grade rotatory laxity in complete ACL-injured knees. Knee Surg Sports Traumatol Arthrosc 2020; 28:2233-2244. [PMID: 31784781 DOI: 10.1007/s00167-019-05803-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 11/12/2019] [Indexed: 01/25/2023]
Abstract
PURPOSE To evaluate the diagnostic value of stress radiography and determine the cutoff values for high-grade anterolateral rotatory laxity in complete anterior cruciate ligament (ACL)-deficient knees at different positions. METHODS Forty-two patients with complete ACL rupture (group 1) and 37 normal subjects (group 2) were prospectively enrolled. The amount of anterior translation in the medial (MM) and lateral (LL) distance compartments and the difference between them (LL-MM distance) were measured using stress radiography at 30°, 45°, 60°, and 90° positions. The area under the receiver operating characteristic curve (AUC) was assessed for the presence of a high-grade (grade > 2) pivot shift. RESULTS The MM and LL distances in group 1 were significantly different at 30° and 45° positions (P < 0.05). The AUC of the MM (AUC, 0.903) and LL (AUC, 0.901) distances at the 30° position was significantly higher than that of the other positions (P = 0.000); however, the cutoff values were different to diagnose ACL injury (MM vs. LL, 3.1 mm vs. 5.4 mm). A 2.1-mm cutoff for the LL-MM distance showed 78.4% sensitivity and 90.3% specificity for detecting the presence of a high-grade pivot shift (AUC = 0.905, P = 0.000). CONCLUSION The cutoff values of stress radiography differed according to anatomical references and knee flexion positions. Stress radiography of a 2.1 mm difference in LL-MM distance at 30° of knee flexion can be a reliable method for high-grade rotatory laxity in complete ACL-injured knees. LEVEL OF EVIDENCE Level 1, diagnostic study.
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Affiliation(s)
- Seong Hwan Kim
- Department of Orthopedic Surgery, Hyundae General Hospital, Chung-Ang University College of Medicine, 21, Bonghyeon-ro, Jinjeop-eup, Namyangju-si, Gyeonggi-do, 12013, South Korea
| | - Yong-Beom Park
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea.
| | - Dae-Woong Ham
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Jung-Won Lim
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Han-Jun Lee
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
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11
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Naendrup JH, Patel NK, Zlotnicki JP, Murphy CI, Debski RE, Musahl V. Education and repetition improve success rate and quantitative measures of the pivot shift test. Knee Surg Sports Traumatol Arthrosc 2019; 27:3418-3425. [PMID: 30715594 DOI: 10.1007/s00167-019-05370-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Clinicians have different techniques and varying levels of experience with the pivot shift test, introducing variability into its performance. The purpose of this study was to evaluate the influence of teaching and repetition on the success rate and anterior translation of the lateral knee compartment during the pivot shift test in a cadaveric ACL injury model. METHODS Twenty-five participants (five each of medical students, orthopaedic surgery residents, physical therapists, athletic trainers, sports medicine fellows) were recruited and a senior orthopaedic surgeon served as gold standard examiner. Each participant performed 20 pivot shift tests on lower extremity cadaveric specimens with ACL deficiency and lateral meniscectomy: 5 prior to education (baseline), 10 after watching an instructional video (passive teaching), and 5 after an interactive education session (active teaching). The anterior translation of the lateral knee compartment was recorded during each pivot shift test using electromagnetic tracking system. RESULTS For medical students and orthopaedic surgery residents, significant improvement in success rate was found when compared to baseline (12% and 24%, respectively) after both passive (36% and 60%, respectively) and active teaching (52% and 72%, respectively) (p < 0.5). Medical students and residents were the only participants that independently achieved significant increases in anterior translation of the lateral knee compartment, each tripling the respective baseline value (p < 0.5). In the entire study population, significant increases in anterior translation of the lateral knee compartment and success rate of the pivot shift test were seen with continuous repetition (p < 0.5). However, the standard deviation of anterior translation of the lateral knee compartment was more than twice the gold standard examiner's standard deviation, indicating a high degree of variability. CONCLUSION Teaching of the pivot shift test plays a major role in the development of a proper technique. However, variability persisted despite teaching and repetition. New methods may be needed to improve the teaching of the pivot shift test.
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Affiliation(s)
- Jan-Hendrik Naendrup
- Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Center, Witten/Herdecke University, Ostmerheimer Str. 200, 51109, Cologne, Germany. .,Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA.
| | - Neel K Patel
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Jason P Zlotnicki
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Conor I Murphy
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Richard E Debski
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Volker Musahl
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
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12
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Naendrup JH, Zlotnicki JP, Murphy CI, Patel NK, Debski RE, Musahl V. Influence of knee position and examiner-induced motion on the kinematics of the pivot shift. J Exp Orthop 2019; 6:11. [PMID: 30888526 PMCID: PMC6424983 DOI: 10.1186/s40634-019-0183-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/07/2019] [Indexed: 11/10/2022] Open
Abstract
Background Grading of the pivot shift test varies significantly depending on the examiner’s technique. Thus, the purpose of this study was to determine the influence of knee starting position and the magnitude of motion during the reduction event on the magnitude of the pivot shift test. Methods Twenty-five clinical providers each performed a total of twenty pivot shift tests on one of two fresh-frozen cadaveric full lower extremity specimens with different grades of rotatory knee laxity. By means of ACL transection and lateral meniscectomy, one specimen was prepared to have a high-grade pivot shift and one to have a low-grade pivot shift. Six-degree-of-freedom kinematics were recorded during each pivot shift test using an electromagnetic-tracking-system. Successful pivot shift tests were defined and selected using an automated, mathematical algorithm based on the exceeding of a threshold value of anterior translation of the lateral knee compartment. The kinematics were correlated with the magnitude of anterior translation of the lateral knee compartment based on varying degrees of rotatory knee laxity using the Pearson correlation coefficient. Results Only mild correlations between anterior translation of the lateral knee compartment and internal tibial rotation at the start of the reduction event were observed in both specimens. The ability to generate a successful reduction event was significantly dependent on the rotatory knee laxity, with a 54% success rate on the high-laxity specimen compared to a 30% success rate on the low-laxity specimen (p < 0.001). Nearly 80% of the variability of the anterior translation of the lateral knee compartment in both specimens was accounted for by external rotation during the reduction event (r = 0.847; p < 0.001). Varus rotation during the reduction event also showed a strong correlation with the anterior translation of the lateral knee compartment in the low-laxity specimen (r = 0.835; p < 0.001). Conclusion Magnitude of motion during the reduction event affected the magnitude of anterior translation of the lateral knee compartment more than the starting position. External rotation during the reduction event accounted for most of the variability in the pivot shift test. More uniform maneuvers and improved teaching are essential to generate repeatable quantitative results of the pivot shift test.
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Affiliation(s)
- Jan-Hendrik Naendrup
- Department of Trauma and Orthopaedic Surgery, Cologne Merheim Medical Center, Witten/Herdecke University, Cologne, Germany.,Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Jason P Zlotnicki
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Conor I Murphy
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Neel K Patel
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Richard E Debski
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Volker Musahl
- Orthopaedic Robotics Laboratory, Department of Bioengineering and Department of Orthopaedic Surgery, University of Pittsburgh, Center for Bioengineering - CNBIO, 300 Technology Drive, Pittsburgh, PA, 15219, USA.
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13
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Lian J, Novaretti JV, Sheean AJ, Patel NK, Whaley S, Popchak A, Musahl V. Static Lateral Tibial Plateau Subluxation Predicts High-Grade Rotatory Knee Laxity in Anterior Cruciate Ligament-Deficient Knees. Am J Sports Med 2019; 47:277-284. [PMID: 30525899 DOI: 10.1177/0363546518812435] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND In anterior cruciate ligament-deficient (ACL-D) knees, injury pattern and bony morphologic features have been shown to influence both static anterior tibial subluxation relative to the femur and dynamic rotatory knee laxity. Therefore, the relationship between static anterior tibial subluxation and dynamic rotatory knee laxity was investigated. PURPOSE To determine whether static tibial subluxation as measured on magnetic resonance imaging (MRI) is associated with the grade of rotatory knee laxity in ACL-D knees. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS Two-hundred fifty-eight knees underwent preoperative, image-guided assessment of lateral knee compartment translation during quantitative pivot shift (QPS). Subluxations of the medial and lateral tibial plateaus were measured on preoperative MRI in a subset of primary ACL-D knees meeting criteria for high-grade (QPS > 5.2 mm) and low-grade (QPS < 2.4 mm) rotatory laxity. Tibial subluxations on MRI were compared between patients with high- and low-grade rotatory laxity through use of pairwise t test and were analyzed via univariate and multivariate logistic regression. Significance was set at P < .05. RESULTS On MRI, greater anterior subluxation of the lateral tibial plateau was observed in patients with high-grade compared with low-grade rotatory knee laxity (4.5 mm vs 2.3 mm; P < .05). No similar relationship was observed for the medial tibial plateau (-0.9 mm vs -0.4 mm; P > .05). Univariate logistic regression demonstrated that static subluxation of the lateral tibial plateau was associated with high-grade rotatory knee laxity (odds ratio [OR], 1.2; P < .05). An optimal cutoff of 2.95 mm of static lateral tibial subluxation was associated with high-grade rotatory knee laxity (sensitivity, 75%; specificity, 63%). Lateral meniscal injury was the first variable entered into a multivariate regression analysis and proved to be most associated with high-grade rotatory knee laxity (OR, 6.8; P < .05). When lateral meniscal injury was excluded from multivariate regression analysis, static anterior subluxation of the lateral tibial plateau alone was associated with high-grade rotatory knee laxity (OR, 1.2; P < .05). CONCLUSION Data from this MRI study of two distinct rotatory knee laxity groups showed that static anterior subluxation of the lateral tibial plateau of 2.95 mm or greater was associated with high-grade rotatory knee laxity, and each millimeter increase of lateral tibial plateau subluxation was associated with a 1.2-fold odds of high-grade rotatory knee laxity. Anterior subluxation of the lateral tibial plateau on MRI was not independently associated with high-grade rotatory knee laxity in the presence of concomitant lateral meniscal injury. Static measurements made preoperatively may aid in predicting high-grade rotatory knee laxity and refining the indications for individualized knee surgery.
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Affiliation(s)
- Jayson Lian
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Albert Einstein College of Medicine, Bronx, New York, USA
| | - João V Novaretti
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.,Orthopaedics and Traumatology Sports Center (CETE), Department of Orthopaedics and Traumatology, Paulista School of Medicine (EPM), Federal University of São Paulo, São Paulo, Brazil
| | - Andrew J Sheean
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Neel K Patel
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Sean Whaley
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Adam Popchak
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Volker Musahl
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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14
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Lee DW, Kim JG, Cho SI, Kim DH. Clinical Outcomes of Isolated Revision Anterior Cruciate Ligament Reconstruction or in Combination With Anatomic Anterolateral Ligament Reconstruction. Am J Sports Med 2019; 47:324-333. [PMID: 30640514 DOI: 10.1177/0363546518815888] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Although the cause of rotational instability after revision anterior cruciate ligament reconstruction (ACLR) is multifactorial, the rationale of adding an extra-articular procedure is based on its ability to restrict rotational instability. PURPOSE To assess the effect of anterolateral ligament (ALL) reconstruction on revision ACLR. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS A total of 87 patients who underwent revision ACLR between March 2011 and July 2014 with a follow-up of more than 3 years were included in this retrospective study. Patients were divided into the isolated revision ACLR group (group I, n = 45, from March 2011 to January 2013) or the revision ACLR in combination with ALL reconstruction group (group C, n = 42, from February 2013 to July 2014). Subjective knee assessments including the subjective International Knee Documentation Committee (IKDC) form, Lysholm score, Tegner activity scale, and Anterior Cruciate Ligament-Return to Sport after Injury (ACL-RSI) scale were used. Clinical and functional tests were performed before surgery and at ≥6 months after surgery. All tests were usually completed at 36 months of follow-up. RESULTS The mean follow-up duration for groups I and C were 41.5 ± 8.2 and 38.2 ± 6.9 months, respectively ( P = .451). The subjective IKDC score, Tegner score, and ACL-RSI score were significantly better in group C compared with those in group I at the last follow-up (84.3 ± 18.5 vs 75.9 ± 19.2, 7.0 ± 0.8 vs 6.3 ± 0.7, and 69.5 ± 25.4 vs 51.9 ± 23.1, respectively), although they were not significantly different between the 2 groups at 12 months after surgery (79.2 ± 18.8 vs 76.7 ± 17.2, 6.7 ± 0.7 vs 6.5 ± 0.9, and 50.2 ± 24.6 vs 49.9 ± 25.1, respectively). There were no significant differences in KT-2000 arthrometer, isokinetic extensor strength, single-legged hop for distance, co-contraction test, or carioca test results between the 2 groups at the last follow-up ( P = .304, .068, .125, .056, and .066, respectively). Preoperatively, 43 (95.6%) patients in group I and 40 (95.2%) patients in group C had a grade 2 or 3 pivot shift ( P = .387). Postoperatively, 23 (53.5%) patients in group I and 38 (90.5%) patients in group C had a negative pivot shift ( P < .001). Group C showed a higher rate of return to the same level of sports activity than group I (57.1% vs 25.6%, respectively; P = .008), although there was no significant difference in the rate of return to any sports activity at the last follow-up (88.4% in group I vs 88.1% in group C; P = .713). CONCLUSION Revision ACLR in combination with ALL reconstruction significantly reduced rotational laxity and showed a higher rate of return to the same level of sports activity than revision ACLR alone, although there were no significant differences in anterior laxity or functional test results between the 2 groups.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Jin Goo Kim
- Department of Orthopaedic Surgery, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Seung Ik Cho
- Sports Medical Center, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Du Han Kim
- Department of Orthopaedic Surgery, Konkuk University Medical Center, Seoul, Republic of Korea
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15
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Zaffagnini S, Signorelli C, Grassi A, Hoshino Y, Kuroda R, de Sa D, Sundemo D, Samuelsson K, Musahl V, Karlsson J, Sheean A, Burnham JM, Lian J, Smith C, Popchak A, Herbst E, Pfeiffer T, Araujo P, Oostdyk A, Guenther D, Ohashi B, Irrgang JJ, Fu FH, Nagamune K, Kurosaka M, Marcheggiani Muccioli GM, Lopomo N, Raggi F, Svantesson E, Hamrin Senorski E, Bjoernsson H, Ahlden M, Desai N. Anatomic Anterior Cruciate Ligament Reconstruction Using Hamstring Tendons Restores Quantitative Pivot Shift. Orthop J Sports Med 2018; 6:2325967118812364. [PMID: 30574514 PMCID: PMC6299314 DOI: 10.1177/2325967118812364] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background: It is still uncertain how surgical reconstruction of the anterior cruciate
ligament (ACL) is able to restore rotatory laxity of the involved joint. The
desired amount of restraint applied by the ACL graft, as compared with the
healthy knee, has not been fully clarified. Purpose: To quantify the ability of single-bundle anatomic ACL reconstruction using
hamstring tendons in reducing the pivot-shift phenomenon immediately after
surgery under anesthesia. Study Design: Case series; Level of evidence, 4. Methods: An inertial sensor and image analysis were used at 4 international centers to
measure tibial acceleration and lateral compartment translation of the knee,
respectively. The standardized pivot-shift test was quantified in terms of
the side-to-side difference in laxity both preoperatively and
postoperatively with the patient under anesthesia. The reduction in both
tibial acceleration and lateral compartment translation after surgery and
the side-to-side difference were evaluated using the Wilcoxon signed-rank
test. Alpha was set at P < .05. Results: A total of 107 patients were recruited for the study, and data were available
for 89 patients. There was a statistically significant reduction in
quantitative rotatory knee laxity between preoperatively (inertial sensor,
2.55 ± 4.00 m/s2; image analysis, 2.04 ± 2.02 mm) and
postoperatively (inertial sensor, –0.54 ± 1.25 m/s2; image
analysis, –0.10 ± 1.04 mm) between the involved and healthy joints, as
measured by the 2 devices (P < .001 for both).
Postoperatively, both devices detected a lower rotatory laxity value in the
involved joint compared with the healthy joint (inertial sensor, 2.45 ± 0.89
vs 2.99 ± 1.10 m/s2, respectively [P < .001];
image analysis, 0.99 ± 0.83 vs 1.09 ± 0.92 mm, respectively
[P = .38]). Conclusion: The data from this study indicated a significant reduction in the pivot shift
when compared side to side. Both the inertial sensor and image analysis used
for the quantitative assessment of the pivot-shift test could successfully
detect restoration of the pivot shift after anatomic single-bundle ACL
reconstruction. Future research will examine how pivot-shift control is
maintained over time and correlation of the pivot shift with return to full
activity in patients with an ACL injury.
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Affiliation(s)
- Stefano Zaffagnini
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Cecilia Signorelli
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Alberto Grassi
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Yuichi Hoshino
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Ryosuke Kuroda
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Darren de Sa
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - David Sundemo
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Kristian Samuelsson
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Volker Musahl
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Jon Karlsson
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Andrew Sheean
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Jeremy M Burnham
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Jayson Lian
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Clair Smith
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Adam Popchak
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elmar Herbst
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Thomas Pfeiffer
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Paulo Araujo
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Alicia Oostdyk
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Daniel Guenther
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Bruno Ohashi
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - James J Irrgang
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Freddie H Fu
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Kouki Nagamune
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Masahiro Kurosaka
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Nicola Lopomo
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Federico Raggi
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Eleonor Svantesson
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Haukur Bjoernsson
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Mattias Ahlden
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Neel Desai
- Investigation performed at IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
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16
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The diagnostic reliability of the quantitative pivot-shift evaluation using an electromagnetic measurement system for anterior cruciate ligament deficiency was superior to those of the accelerometer and iPad image analysis. Knee Surg Sports Traumatol Arthrosc 2018; 26:2835-2840. [PMID: 29030647 DOI: 10.1007/s00167-017-4734-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/27/2017] [Indexed: 01/23/2023]
Abstract
PURPOSE Several non-invasive devices have been developed to obtain quantitative assessment of the pivot-shift test in clinical setting using similar but diverse measurement parameters. However, the clinical usability of those measurements has yet to be closely investigated and compared. The purpose of this study was to compare the diagnostic accuracy of three non-invasive measurement devices for the pivot-shift test. METHODS Thirty patients with unilateral anterior cruciate ligament (ACL) injury were enrolled. The pivot-shift test was performed under general anaesthesia. Three devices, an accelerometer system (KiRA), an image analysis iPad application (iPad), and electromagnetic measurement system (EMS), were used simultaneously to provide two parameters, namely tibial acceleration monitored using KiRA and EMS, and tibial translation recorded using iPad and EMS. Side-to-side differences in each parameter and correlation between the measurements were tested, and a receiver-operating characteristic (ROC) curve analysis was conducted to compare their measurement accuracy. RESULTS Significant side-to-side differences were successfully detected using any of the measurements (all p < 0.01). KiRA demonstrated moderate correlation with the EMS for tibial acceleration (r = 0.54; p < 0.01), while poor correlation was observed between iPad and the EMS for the translation (r = 0.28; p < 0.01). The ROC curve analysis demonstrated better accuracy for the detection of ACL insufficiency in the EMS than KiRA and iPad for tibial acceleration and translation, respectively. CONCLUSIONS Although all three measurements were similarly capable of detecting ACL deficiency, the EMS has the advantage of comprehensive evaluation of the pivot-shift test by evaluating both tibial acceleration and translation with higher accuracy than those of KiRA and iPad. It could be suggested that any of those measurement tools might improve the clinical diagnosis of ACL insufficiency. LEVEL OF EVIDENCE Diagnostic study of consecutive patients with a universally applied gold standard, Level Ib.
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Lee DW, Lee JH, Kim JN, Moon SG, Kim NR, Kim DH, Kim JG. Evaluation of Anterolateral Ligament Injuries and Concomitant Lesions on Magnetic Resonance Imaging After Acute Anterior Cruciate Ligament Rupture. Arthroscopy 2018; 34:2398-2406. [PMID: 29730210 DOI: 10.1016/j.arthro.2018.02.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 02/17/2018] [Accepted: 02/17/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the prevalence and characteristics of anterolateral ligament (ALL) injuries with a ruptured acute anterior cruciate ligament (ACL) and to analyze the presence of concomitant bone contusions and meniscal lesions. METHODS From March 2015 to March 2017, we retrospectively analyzed 378 patients who underwent primary ACL reconstructions. Using magnetic resonance imaging, we evaluated the presence of ALL injury and concomitant lesions within 3 weeks of the injury. Meniscal tears were also identified on representative arthroscopic images. RESULTS Following the inclusion criteria, we included a total of 275 patients in this study. The mean duration from ACL rupture to magnetic resonance imaging examination was 5.0 ± 6.0 days. We visualized ALL in 98.2% of patients, of whom 64% had ALL injuries (10.9%, 4.7%, and 48.4% were complete ruptures, Segond fracture, and partial ruptures, respectively). We found that ALL injuries were most commonly found in the femoral location. The intra- and interobserver agreement on the severity of ALL injury (κ = 0.83 and 0.81, respectively) and the location of ALL injury (κ = 0.85 and 0.84, respectively) were excellent. The association between ALL injury and lateral meniscal lesions was significant (P = .03). In particular, the proportion of the lateral meniscal posterior horn radial tears was significantly larger in nonintact ALL than in intact ALL (P = .042). The correlation between the severity of ALL injury and the degree of bone contusion at lateral compartments was significant but weak (P < .001). CONCLUSIONS We found that more than half of acute ACL ruptures have ALL injuries. The presence of ALL injury was significantly associated with the presence of lateral meniscal lesions, especially lateral meniscal posterior horn radial tears, or lateral bone contusions. Interestingly, the severity of ALL injury significantly correlated with the degree of lateral bone contusions. LEVEL OF EVIDENCE Level III, diagnostic cross-sectional study.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Ji Hwan Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Ji Nam Kim
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Sung Gyu Moon
- Department of Radiology, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Na Ra Kim
- Department of Radiology, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Du Han Kim
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Jin Goo Kim
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea.
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Patel NK, Murphy CI, Nagai K, Canton S, Herbst E, Naendrup JH, Debski RE, Musahl V. Passive teaching is not as effective as active teaching for learning the standard technique of pivot shift test. J ISAKOS 2018. [DOI: 10.1136/jisakos-2017-000171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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20
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Svantesson E, Hamrin Senorski E, Mårtensson J, Zaffagnini S, Kuroda R, Musahl V, Karlsson J, Samuelsson K. Static anteroposterior knee laxity tests are poorly correlated to quantitative pivot shift in the ACL-deficient knee: a prospective multicentre study. J ISAKOS 2018. [DOI: 10.1136/jisakos-2017-000196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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21
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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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22
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The PIVOT Group, Musahl V, Irrgang J, Fu F, Popchak A, Araujo P, Sa DD, Patel N, Lian J, Kuroda R, Hoshino Y, Kurosaka M, Nagamune K, Zaffagnini S, Marcheggiani Muccioli GM, Signorelli C, Lopomo N, Grassi A, Samuelsson K, Karlsson J, Sundemo D, Svantesson E, Senorski EH. Preoperative knee laxity measurements predict the achievement of a patient-acceptable symptom state after ACL reconstruction: a prospective multicenter study. J ISAKOS 2018. [DOI: 10.1136/jisakos-2017-000186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift: a multicenter international study. Knee Surg Sports Traumatol Arthrosc 2017; 25:3004-3011. [PMID: 27095250 DOI: 10.1007/s00167-016-4130-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 04/05/2016] [Indexed: 01/18/2023]
Abstract
PURPOSE The main goal of this work was to evaluate the pivot shift test in awake and anesthetized patients by using two different quantitative methodologies and comparing the results with the standard clinical grading, taking advantage of a multicenter international study. METHODS Patients between 16 and 50 years of age undergoing primary unilateral single-bundle anterior cruciate ligament (ACL) reconstruction were considered eligible. The pivot shift test was performed pre-operatively, with the patient awake and again with the patient under general anaesthesia. The pivot shift test was clinically graded as defined by the International Knee Documentation Committee. The instrumented assessment was performed by using two non-invasive acquisition systems; specifically, a system exploiting an inertial sensor and a video-based application developed on a commercial tablet using skin markers. Lateral compartment translation and the tibial acceleration reached during joint reduction were used as quantitative parameters. RESULTS A total of 103 patients were enrolled in the study. Statistically significant difference was found between the distributions of clinical grade evaluated in awake patients and those under general anaesthesia (P < 0.01). Comparing awake patients to those under general anaesthesia, lower values were found both for tibial acceleration (3.7 ± 1.5 vs 6.0 ± 4.6 m/s2, P < 0.01) and lateral compartment translation of the involved limb (2.2 ± 1.7 vs 3.0 ± 2.2 mm, P < 0.01). CONCLUSIONS This study indicated that significant differences in the grading of the pivot shift test exist between awake and anesthetized patients, regardless of the use of quantitative instruments during the evaluation. Actual clinical assessment reported indeed its weakness, presenting subjective variability and dependence on tester's experience. However, several factors might influence the validity of awake examination such as experience level of examiner and cultural factors, as seen in this international multicenter study. LEVEL OF EVIDENCE Prospective comparative study, Level II.
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Espregueira-Mendes J, Andrade R, Leal A, Pereira H, Skaf A, Rodrigues-Gomes S, Oliveira JM, Reis RL, Pereira R. Global rotation has high sensitivity in ACL lesions within stress MRI. Knee Surg Sports Traumatol Arthrosc 2017; 25:2993-3003. [PMID: 27530386 DOI: 10.1007/s00167-016-4281-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 08/05/2016] [Indexed: 01/14/2023]
Abstract
PURPOSE This study aims to objectively compare side-to-side differences of P-A laxity alone and coupled with rotatory laxity within magnetic resonance imaging, in patients with total anterior cruciate ligament (ACL) rupture. METHODS This prospective study enrolled sixty-one patients with signs and symptoms of unilateral total anterior cruciate ligament rupture, which were referred to magnetic resonance evaluation with simultaneous instrumented laxity measurements. Sixteen of those patients were randomly selected to also have the contralateral healthy knee laxity profile tested. Images were acquired for the medial and lateral tibial plateaus without pressure, with postero-anterior translation, and postero-anterior translation coupled with maximum internal and external rotation, respectively. RESULTS All parameters measured were significantly different between healthy and injured knees (P < 0.05), with exception of lateral plateau without stress. The difference between injured and healthy knees for medial and lateral tibial plateaus anterior displacement (P < 0.05) and rotation (P < 0.001) was statistically significant. It was found a significant correlation between the global rotation of the lateral tibial plateau (lateral plateau with internal + external rotation) with pivot-shift, and between the anterior global translation of both tibial plateaus (medial + lateral tibial plateau) with Lachman. The anterior global translation of both tibial plateaus was the most specific test with a cut-off point of 11.1 mm (93.8 %), and the global rotation of the lateral tibial plateau was the most sensitive test with a correspondent cut-off point of 15.1 mm (92.9 %). CONCLUSION Objective laxity quantification of ACL-injured knees showed increased sagittal laxity, and simultaneously in sagittal and transversal planes, when compared to their healthy contralateral knee. Moreover, when measuring instability from anterior cruciate ligament ruptures, the anterior global translation of both tibial plateaus and global rotation of the lateral tibial plateau add diagnostic specificity and sensitivity. This work strengthens the evidence that the anterior cruciate ligament plays an important biomechanical role in controlling the anterior translation, but also both internal and external rotation. The high sensitivity and specificity of this device in objectively identifying and measuring the multiplanar instability clearly guides stability restoration clinical procedures. Level of evidence Cross-sectional study, Level III.
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Affiliation(s)
- João Espregueira-Mendes
- Orthopaedics Department of Minho University, Braga, Portugal. .,Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal. .,Dom Henrique Research Centre, Porto, Portugal. .,3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal. .,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - Renato Andrade
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,Dom Henrique Research Centre, Porto, Portugal.,Faculty of Sports, University of Porto, Porto, Portugal
| | - Ana Leal
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,Dom Henrique Research Centre, Porto, Portugal.,CMEMS Center for MicroElectroMechanical Systems, Mechanical Engineering Department, University of Minho, Guimarães, Portugal
| | - Hélder Pereira
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,Dom Henrique Research Centre, Porto, Portugal.,Orthopaedic Department, Centro Hospitalar Póvoa de Varzim, Vila do Conde, Portugal
| | - Abdala Skaf
- Hospital do Coração, São Paulo, Brazil.,Musculoskeletal Department, Clínica Alta Excelência Diagnóstica, São Paulo, Brazil
| | - Sérgio Rodrigues-Gomes
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,Dom Henrique Research Centre, Porto, Portugal.,SMIC Group, Porto, Portugal
| | - J Miguel Oliveira
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rogério Pereira
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal.,Dom Henrique Research Centre, Porto, Portugal.,Faculty of Health Sciences, University of Fernando Pessoa, Porto, Portugal
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Evaluation of pivot shift phenomenon while awake and under anaesthesia by different manoeuvres using triaxial accelerometer. Knee Surg Sports Traumatol Arthrosc 2017; 25:2377-2383. [PMID: 26233597 DOI: 10.1007/s00167-015-3740-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 07/24/2015] [Indexed: 01/13/2023]
Abstract
PURPOSE Evaluating pivot shift phenomenon is difficult due to its subjectivity, wide variation of testing manoeuvres, and difficulty in evaluating patients while awake. The purpose of this study was to evaluate the pivot shift phenomenon using a triaxial accelerometer by two different manoeuvres, the pivot shift test as representative of flexion manoeuvre and N test as a representative of extension manoeuvre, and in two different conditions, awake and under anaesthesia. METHODS Twenty-nine patients with unilateral anterior cruciate ligament (ACL)-injured knee were included. Pivot shift test and N test were performed for both injured and uninjured legs while awake and under anaesthesia, with the acceleration measurements using a triaxial accelerometer (KiRA). The tests were also subjectively graded on a scale of 0-6 based on the modification of IKDC criteria. RESULTS Under anaesthesia, acceleration of ACL-injured knees was greater than that of uninjured knees in both pivot shift test (P < 0.001) and N test (P < 0.001) , whereas the acceleration value was greater in the N test. Furthermore, there were significant positive correlations between the acceleration and subjective grading in both tests, whereas the N test was more significant than the pivot shift test. On the other hand, there was no statistical significance in acceleration between ACL-injured and uninjured knees in either test while the patient was awake. CONCLUSION The triaxial accelerometer was useful to objectively detect and quantitatively evaluate the pivot shift phenomenon by both the pivot shift test and N test under anaesthesia. The acceleration of ACL-injured knees was greater than that of uninjured knees, and the acceleration was correlated with the subjective manual grading, especially in the N test. On the other hand, its use while the patient was awake was likely limited. LEVELS OF EVIDENCE Diagnostic study of non-consecutive patients without a universally applied gold standard, Level III.
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Branch TP, Stinton SK, Hutton WC, Neyret P. The combination of tibial anterior translation and axial rotation into a single biomechanical factor improves the prediction of patient satisfaction over each factor alone in patients with ACL reconstructed knees. Knee Surg Sports Traumatol Arthrosc 2017; 25:1038-1047. [PMID: 28299388 PMCID: PMC5420376 DOI: 10.1007/s00167-017-4497-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 02/27/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of this study was to identify biomechanical factors, in both reconstructed and healthy knees, that correlate with patient satisfaction after ACL reconstruction. METHODS Seventeen patients who had undergone unilateral ACL reconstruction were reviewed 9 years post-op. Patients completed subjective questionnaires and underwent manual knee laxity testing (Lachman-Trillat, KT-1000, and pivot shift) and automated laxity testing. During automated testing, both legs were rotated into external rotation and then internal rotation until peak rotational torque reached 5.65 Nm. Load-deformation curves were generated from torque and rotation data. Features of the curves were extracted for analysis. Total leg rotation and anterior laxity during KT-1000 testing were combined into a single factor (Joint Play Envelope or JPE). Patients were divided into groups based on patient satisfaction scores (Group 1: Higher Satisfaction, Group 2: Lower Satisfaction, Group 3: Unsatisfied). Load-deformation curve features and manual laxity testing results were compared between groups 1 and 2 to determine which biomechanical factors could distinguish between the groups. Diagnostic screening values were calculated for KT-1000 testing, the pivot shift test, total leg rotation and JPE. RESULTS During manual testing, no significant differences in biomechanical factors were found when comparing reconstructed knees in group 1 and group 2. When comparing the reconstructed and healthy knees within group 2, the reconstructed knees had a significantly higher displacement during the KT-1000 manual maximum test (p < 0.002). When considering the reconstructed knees alone, neither the result of the pivot shift test nor KT-1000 testing could distinguish between group 1 and group 2. During automated testing, there were no significant differences between the groups when comparing the reconstructed lower limbs. The healthy lower limbs in group 2 had more maximum external rotation (p < 0.02) and decreased stiffness at maximum external rotation (p < 0.02) when compared to the healthy lower limbs in group 1. Total leg rotation was unable to distinguish between group 1 and group 2. JPE could distinguish between group 1 and group 2 when considering the reconstructed limb alone (p < 0.02). All four diagnostic screening values for JPE were equal or higher than in the other criteria. JPE also showed the most significant correlation with patient satisfaction. CONCLUSIONS Joint Play Envelope is an objective measure that demonstrated improved predictive value as compared to other tests when used as a measure of satisfaction in patients with ACL reconstructed knees.
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Affiliation(s)
| | - Shaun K Stinton
- ArthroMetrix LLC, 441 Armour Place NE, Atlanta, GA, 30324, USA.
| | - William C Hutton
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, USA
| | - Philippe Neyret
- Department Orthopedic Surgery, Centre Albert-Trillat, Hôpital de la Croix-Rousse, Lyon, France
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Abstract
This article reviews the evidence for the roles of the anterolateral soft-tissue structures in rotatory stability of the knee, including their structural properties, isometry, and contributions to resisting tibial internal rotation. These data then lead to a biomechanical demonstration that the ilio-tibial band is the most important structure for the restraint of anterolateral rotatory instability. Level of evidence V.
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Affiliation(s)
- Andrew A Amis
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, SW7 2AZ, UK.
- Musculoskeletal Surgery Group, Department of Surgery and Cancer, Imperial College London School of Medicine, London, W6 8RF, UK.
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Pediatric musculoskeletal injuries: role of ultrasound and magnetic resonance imaging. Musculoskelet Surg 2017; 101:85-102. [PMID: 28155066 DOI: 10.1007/s12306-017-0452-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 01/15/2017] [Indexed: 10/20/2022]
Abstract
Pediatric musculoskeletal system is particularly prone to traumatic and sports-related injuries, both acute and chronic, i.e., overuse injuries, because of inherent conditions of weakness, such as the open physis, representing the weakest aspect within the bone, the ligamentous supports and changing biomechanics. Being aware that a quick diagnosis is essential to preserve the good functionality of the limb involved, it is mandatory for the radiologist to recognize the most common patterns of these injuries, identifying those requiring a prompt surgery, as well as be confident with the technique performed, and be supported by an important background experience and knowledge skills.
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Mei X, Zhang Z, Yang J. Double-layer versus single-layer bone-patellar tendon-bone anterior cruciate ligament reconstruction: a prospective randomized study with 3-year follow-up. Arch Orthop Trauma Surg 2016; 136:1733-1739. [PMID: 27568219 DOI: 10.1007/s00402-016-2548-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 11/28/2022]
Abstract
PURPOSE To evaluate the clinical results of a randomized controlled trial of single-layer versus double-layer bone-patellar tendon-bone (BPTB) anterior cruciate ligament (ACL) reconstruction. METHODS Fifty-eight subjects who underwent primary ACL reconstruction with a BPTB allograft were prospectively randomized into two groups: single-layer reconstruction (n = 31) and double-layer reconstruction (n = 27). The following evaluation methods were used: clinical examination, KT-1000 arthrometer measurement, muscle strength, Tegner activity score, Lysholm score, subjective rating scale regarding patient satisfaction and sports performance level, graft retear, contralateral ACL tear, and additional meniscus surgery. RESULTS Forty-eight subjects (24 in single-layer group and 24 in double-layer group) who were followed up for 3 years were evaluated. Preoperatively, there were no differences between the groups. At 3-year follow-up, the Lachman and pivot-shift test results were better in the double-layer group (P = 0.019 and P < 0.0001, respectively). KT measurements were better in the double-layer group (mean 2.9 versus 1.5 mm; P = 0.0025). The Tegner score was also better in the double-layer group (P = 0.024). There were no significant differences in range of motion, muscle strength, Lysholm score, subjective rating scale, graft retear, and secondary meniscal tear. CONCLUSIONS In ACL reconstruction, double-layer BPTB reconstruction was significantly better than single-layer reconstruction regarding anterior and rotational stability at 3-year follow-up. The results of KT measurements and the Lachman and pivot-shift tests were significantly better in the double-layer group, whereas there was no difference in the anterior drawer test results. The Tegner score was also better in the double-layer group; however, there were no differences in the other subjective findings.
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Affiliation(s)
- Xiaoliang Mei
- Orthopedic Department, The Affiliated Taizhou people's Hospital of Nantong University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Zhenxiang Zhang
- Orthopedic Department, The Affiliated Taizhou people's Hospital of Nantong University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Jingwen Yang
- Orthopedic Department, The Affiliated Taizhou people's Hospital of Nantong University, Taizhou, 225300, Jiangsu, People's Republic of China.
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Nakamura K, Koga H, Sekiya I, Watanabe T, Mochizuki T, Horie M, Nakamura T, Otabe K, Muneta T. Dynamic Evaluation of Pivot-Shift Phenomenon in Double-Bundle Anterior Cruciate Ligament Reconstruction Using Triaxial Accelerometer. Arthroscopy 2016; 32:2532-2538. [PMID: 27296869 DOI: 10.1016/j.arthro.2016.04.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 04/12/2016] [Accepted: 04/19/2016] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the effect of initial graft tension on rotational stability and to determine the minimum required tension (MRT) based on the pivot-shift phenomenon in isolated anteromedial bundle (AMB), isolated posteromedial bundle (PLB), and double-bundle anterior cruciate ligament (ACL) reconstructions using a triaxial accelerometer during surgery. METHODS Primary double-bundle ACL reconstructions were included. The pivot-shift test and N-test were performed before and during surgery with the acceleration measurements using a triaxial accelerometer. The pivot-shift test was also manually graded. The AMB and PLB were fixed to a graft tensioning system during surgery with the following settings: (1) AMB only (AMB), (2) PLB only (PLB), and (3) AMB and PLB (A+P). The total graft tension was first set at 20 N and then was increased in increments of 10 N until the pivot-shift test became negative, which was defined as the MRT in each setting. RESULTS Twenty-five patients were evaluated. The MRT in the AMB setting averaged 26 N (range, 20 to 40 N); in the PLB setting, 28 N (range, 20 to 40 N); and in the A+P setting, 24 N (range, 20 to 40 N). The MRT in the A+P setting was significantly smaller than that in the PLB setting (P = .008). The acceleration in the A+P setting was significantly smaller than that in the AMB and PLB settings both in the pivot-shift test (vs AMB: P = .007, vs PLB: P = .011) and in the N-test (vs AMB: P < .001, vs PLB: P < .001). CONCLUSIONS Double-bundle ACL reconstruction better controlled rotational stability with smaller MRT than isolated PLB reconstruction at the time of surgery. In double-bundle reconstruction, the MRT based on the pivot-shift phenomenon could be larger than previously reported MRT based on anteroposterior laxity. LEVEL OF EVIDENCE Level IV, therapeutic case series.
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Affiliation(s)
- Kaori Nakamura
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Hideyuki Koga
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan.
| | - Ichiro Sekiya
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Toshifumi Watanabe
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Tomoyuki Mochizuki
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Masafumi Horie
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Tomomasa Nakamura
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Koji Otabe
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Takeshi Muneta
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
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Current use of navigation system in ACL surgery: a historical review. Knee Surg Sports Traumatol Arthrosc 2016; 24:3396-3409. [PMID: 27744575 DOI: 10.1007/s00167-016-4356-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/07/2016] [Indexed: 12/13/2022]
Abstract
PURPOSE The present review aims to analyse the available literature regarding the use of navigation systems in ACL reconstructive surgery underling the evolution during the years. METHODS A research of indexed scientific papers was performed on PubMed and Cochrane Library database. The research was performed in December 2015 with no publication year restriction. Only English-written papers and related to the terms ACL, NAVIGATION, CAOS and CAS were considered. Two reviewers independently selected only those manuscripts that presented at least the application of navigation system for ACL reconstructive surgery. RESULTS One hundred and forty-six of 394 articles were finally selected. In this analysis, it was possible to review the main uses of navigation system in ACL surgery including tunnel positioning for primary and revision surgery and kinematic assessment of knee laxity before and after different surgical procedures. In the early years, until 2006, navigation system was mainly used to improve tunnel positioning, but since the last decade, this tool has been principally used for kinematics evaluation. Increased accuracy of tunnel placement was observed using navigation surgery, especially, regarding femoral, 42 of 146 articles used navigation to guide tunnel positioning. During the following years, 82 of 146 articles have used navigation system to evaluate intraoperative knee kinematic. In particular, the importance of controlling rotatory laxity to achieve better surgical outcomes has been underlined. CONLUSIONS Several applications have been described and despite the contribution of navigation systems, its potential uses and theoretical advantages, there are still controversies about its clinical benefit. The present papers summarize the most relevant studies that have used navigation system in ACL reconstruction. In particular, the analysis identified four main applications of the navigation systems during ACL reconstructive surgery have been identified: (1) technical assistance for tunnel placement; (2) improvement in knowledge of the kinematic behaviour of ACL and other structures; (3) comparison of effectiveness of different surgical techniques in controlling laxities; (4) navigation system performance to improve the outcomes of ACL reconstruction and cost-effectiveness. LEVEL OF EVIDENCE IV.
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Herbst E, Naendrup JH, Pfeiffer T, Debski RE, Musahl V. Neue App zur Quantifizierung des Pivot-shift-Tests. ARTHROSKOPIE 2016. [DOI: 10.1007/s00142-016-0096-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Maeda S, Tsuda E, Yamamoto Y, Naraoka T, Kimura Y, Ishibashi Y. Quantification of the pivot-shift test using a navigation system with non-invasive surface markers. Knee Surg Sports Traumatol Arthrosc 2016; 24:3612-3618. [PMID: 27306984 DOI: 10.1007/s00167-016-4165-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 05/10/2016] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of this study was to validate the quantitation of the pivot-shift phenomenon by using a navigation system with non-invasive surface markers. Measurements obtained using this system were compared with those obtained using commercial pin-fixed markers. METHODS Seventy patients with anterior cruciate ligament (ACL) injuries were assessed under general anaesthesia. Knee kinematics during the pivot-shift test were recorded using an image-free navigation system with a commercial transmitter placed on the thigh and lower leg (surface markers) or those fixed to the femur and the tibia via metal pin fixators (pin-fixed markers). For quantitation of the pivot-shift phenomenon, posterior tibial reduction (PTR) was calculated using the two types of navigation system markers and were then compared. PTRs measured using the two types of markers were also compared with clinical grade of the pivot-shift test, as determined by an examiner. RESULTS The pivot-shift phenomenon could be identified in all patients on the navigation screen. The PTR measured using surface markers moderately correlated with that measured using pin-fixed markers (ρ = 0.524, p < 0.001). There were also moderate correlations between clinical grades and the PTRs measured using either the surface markers (ρ = 0.522, p < 0.001) or the pin-fixed markers (ρ = 0.645, p < 0.001). CONCLUSIONS The present study demonstrated that PTR, during the pivot-shift test, may be quantified in ACL-injured knees, using a navigation system with surface markers, and that the PTR measured with surface markers moderately correlated both with the PTR obtained using pin-fixed markers and with the clinical grade of the pivot-shift test. A customised method of fixing transmitters with reflective markers to patients' thighs and shins with Velcro straps is non-invasive and could assess and record the knee kinematics, especially the pivot-shift test, in ACL-injured and ACL-reconstructed knees before, during, and after surgery using a navigation system. LEVEL OF EVIDENCE Case series, Level IV.
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Affiliation(s)
- Shugo Maeda
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan.
| | - Eiichi Tsuda
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Yuji Yamamoto
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Takuya Naraoka
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Yuka Kimura
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
| | - Yasuyuki Ishibashi
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan
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Abstract
Anterior cruciate ligament (ACL) reconstruction aims to restore the translational and rotational motion to the knee joint that is lost after injury. However, despite technical advancements, clinical outcomes are less than ideal, particularly in return to previous activity level. A major issue is the inability to standardize treatment protocols due to variations in materials and approaches used to accomplish ACL reconstruction. These include surgical techniques such as the transtibial and anteromedial portal methods that are currently under use and the wide availability of graft types that will be used to reconstruct the ACL. In addition, concomitant soft tissue injuries to the menisci and capsule are frequently present after ACL injury and, if left unaddressed, can lead to persistent instability even after the ACL has been reconstructed. Advances in the field of biomechanics that help to objectively measure motion of the knee joint may provide more precise data than current subjective clinical measurements. These technologies include extra-articular motion capture systems that measure the movement of the tibia in relation to the femur. With data gathered from these devices, a threshold for satisfactory knee stability may be established in order to correctly identify a successful reconstruction following ACL injury.
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Grassi A, Lopomo NF, Rao AM, Abuharfiel AN, Zaffagnini S. No proof for the best instrumented device to grade the pivot shift test: a systematic review. J ISAKOS 2016. [DOI: 10.1136/jisakos-2015-000047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Musahl V, Griffith C, Irrgang JJ, Hoshino Y, Kuroda R, Lopomo N, Zaffagnini S, Samuelsson K, Karlsson J. Validation of Quantitative Measures of Rotatory Knee Laxity. Am J Sports Med 2016; 44:2393-8. [PMID: 27371547 DOI: 10.1177/0363546516650667] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Prior attempts to quantify the pivot-shift examination have been too invasive or impractical for clinical use. A noninvasive method for quantifying rotatory knee laxity is needed. HYPOTHESIS Greater quantitative measurements of rotatory knee laxity (both of the involved knee as well as compared with the contralateral healthy knee) are associated with an increasing clinical pivot-shift grade. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS A total of 103 patients undergoing anatomic single-bundle anterior cruciate ligament (ACL) reconstruction at 4 international centers underwent a standardized pivot-shift test preoperatively on both knees while anesthetized. Clinical grading of the pivot shift was performed according to the International Knee Documentation Committee (IKDC) knee ligament rating system. Two different quantitative technologies were used to measure rotatory knee laxity: an inertial sensor and an image analysis were independently used to measure tibial acceleration and lateral compartment translation, respectively, during the pivot-shift test. Patients were dichotomized to "high-grade" (abnormal and severely abnormal) or "low-grade" (normal and nearly normal) rotatory knee laxity groups based on the clinical pivot-shift test result of the involved side. Tibial acceleration and lateral compartment translation of the involved knee and the side-to-side difference between the involved and contralateral knees were separately compared between the high- and low-grade rotatory knee laxity groups utilizing t tests; significance was set at P < .05. RESULTS Forty-three patients were in the low-grade rotatory knee laxity group, and 60 patients were in the high-grade rotatory knee laxity group. Patients in the high-grade knee laxity group had significantly higher lateral compartment translation as measured with the image analysis (involved knee: 3.8 ± 2.3 mm; side-to-side difference: 2.5 ± 2.4 mm) compared with patients in the low-grade group (involved knee: 2.0 ± 1.4 mm; side-to-side difference: 1.4 ± 1.5 mm) (both P < .01). As measured with the inertial sensor, tibial acceleration for patients in the high-grade group was significantly higher (involved knee: 7.2 ± 5.3 m/s(2); side-to-side difference: 4.2 ± 5.4 m/s(2)) compared with patients in the low-grade group (involved knee: 4.2 ± 1.6 m/s(2); side-to-side difference: 1.2 ± 1.2 m/s(2)) (both P < .01). CONCLUSION The inertial sensor and image analysis techniques were able to detect differences between low- and high-grade pivot-shift test results. A quantitative assessment of the pivot-shift test could augment the diagnosis of an ACL injury and improve the ability to detect changes in rotatory knee laxity over time.
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Affiliation(s)
| | - Chad Griffith
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - James J Irrgang
- Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | | | | | | | | | | | - Jon Karlsson
- Sahlgrenska University Hospital, Göteborg, Sweden
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Zaffagnini S, Signorelli C, Grassi A, Yue H, Raggi F, Urrizola F, Bonanzinga T, Marcacci M. Assessment of the pivot shift using inertial sensors. Curr Rev Musculoskelet Med 2016; 9:160-3. [PMID: 26970757 DOI: 10.1007/s12178-016-9333-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The pivot shift test is an important clinical tool used to assess the stability of the knee following an injury to the anterior cruciate ligament (ACL). Previous studies have shown that significant variability exists in the performance and interpretation of this manoeuvre. Accordingly, a variety of techniques aimed at standardizing and quantifying the pivot shift test have been developed. In recent years, inertial sensors have been used to measure the kinematics of the pivot shift. The goal of this study is to present a review of the literature and discuss the principles of inertial sensors and their use in quantifying the pivot shift test.
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Affiliation(s)
- Stefano Zaffagnini
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.
| | - Cecilia Signorelli
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Alberto Grassi
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Han Yue
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Federico Raggi
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Francisco Urrizola
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy.,Servicio Traumatologia, Hospital Las Higueras, Talcahuano, Chile
| | - Tommaso Bonanzinga
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
| | - Maurilio Marcacci
- Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via Di Barbiano 1/10, Bologna, BO, Italy
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Abstract
Motion at the knee joint is a complex mechanical phenomenon. Stability is provided by a combination of static and dynamic structures that work in concert to prevent excessive movement or instability that is inherent in various knee injuries. The anterior cruciate ligament (ACL) is a main stabilizer of the knee, providing both translational and rotatory constraint. Despite the high volume of research directed at native ACL function, pathogenesis and surgical reconstruction of this structure, a gold standard for objective quantification of injury and subsequent repair, has not been demonstrated. Furthermore, recent studies have suggested that novel anatomic structures may play a significant role in knee stability. The use of biomechanical principles and testing techniques provides essential objective/quantitative information on the function of bone, ligaments, joint capsule, and other contributing soft tissues in response to various loading conditions. This review discusses the principles of biomechanics in relation to knee stability, with a focus on the objective quantification of knee stability, the individual contributions of specific knee structures to stability, and the most recent technological advances in the biomechanical evaluation of the knee joint.
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Affiliation(s)
- Jason P Zlotnicki
- Department of Orthopaedic Surgery, University of Pittsburgh, 3471 Fifth Avenue, Pittsburgh, PA, 15213, USA
- Orthopaedic Robotics Laboratory, University of Pittsburgh, 408 Center for Bioengineering, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Jan-Hendrik Naendrup
- Department of Orthopaedic Surgery, University of Pittsburgh, 3471 Fifth Avenue, Pittsburgh, PA, 15213, USA
- Orthopaedic Robotics Laboratory, University of Pittsburgh, 408 Center for Bioengineering, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Gerald A Ferrer
- Orthopaedic Robotics Laboratory, University of Pittsburgh, 408 Center for Bioengineering, 300 Technology Drive, Pittsburgh, PA, 15219, USA
- Department of Bioengineering, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA
| | - Richard E Debski
- Orthopaedic Robotics Laboratory, University of Pittsburgh, 408 Center for Bioengineering, 300 Technology Drive, Pittsburgh, PA, 15219, USA.
- Department of Bioengineering, University of Pittsburgh, 300 Technology Drive, Pittsburgh, PA, 15219, USA.
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Residual rotatory laxity after anterior cruciate ligament reconstruction: how do we diagnose it and prevent it? CURRENT ORTHOPAEDIC PRACTICE 2016. [DOI: 10.1097/bco.0000000000000373] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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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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Anterolateral ligament abnormalities in patients with acute anterior cruciate ligament rupture are associated with lateral meniscal and osseous injuries. Eur Radiol 2016; 26:3383-91. [DOI: 10.1007/s00330-015-4171-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/08/2015] [Accepted: 12/14/2015] [Indexed: 01/26/2023]
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The use of a robotic tibial rotation device and an electromagnetic tracking system to accurately reproduce the clinical dial test. Knee Surg Sports Traumatol Arthrosc 2016; 24:815-22. [PMID: 26891963 PMCID: PMC4769317 DOI: 10.1007/s00167-016-4042-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 01/29/2016] [Indexed: 12/18/2022]
Abstract
PURPOSE The purpose of this study was to: (1) determine whether a robotic tibial rotation device and an electromagnetic tracking system could accurately reproduce the clinical dial test at 30° of knee flexion; (2) compare rotation data captured at the footplates of the robotic device to tibial rotation data measured using an electromagnetic sensor on the proximal tibia. METHODS Thirty-two unilateral ACL-reconstructed patients were examined using a robotic tibial rotation device that mimicked the dial test. The data reported in this study is only from the healthy legs of these patients. Torque was applied through footplates and was measured using servomotors. Lower leg motion was measured at the foot using the motors. Tibial motion was also measured through an electromagnetic tracking system and a sensor on the proximal tibia. Load-deformation curves representing rotational motion of the foot and tibia were compared using Pearson's correlation coefficients. Off-axis motions including medial-lateral translation and anterior-posterior translation were also measured using the electromagnetic system. RESULTS The robotic device and electromagnetic system were able to provide axial rotation data and translational data for the tibia during the dial test. Motion measured at the foot was not correlated to motion of the tibial tubercle in internal rotation or in external rotation. The position of the tibial tubercle was 26.9° ± 11.6° more internally rotated than the foot at torque 0 Nm. Medial-lateral translation and anterior-posterior translation were combined to show the path of the tubercle in the coronal plane during tibial rotation. CONCLUSIONS The information captured during a manual dial test includes both rotation of the tibia and proximal tibia translation. All of this information can be captured using a robotic tibial axial rotation device with an electromagnetic tracking system. The pathway of the tibial tubercle during tibial axial rotation can provide additional information about knee instability without relying on side-to-side comparison between knees. The translation of the proximal tibia is important information that must be considered in addition to axial rotation of the tibia when performing a dial test whether done manually or with a robotic device. Instrumented foot position cannot provide the same information. LEVEL OF EVIDENCE IV.
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Arilla FV, Yeung M, Bell K, Rahnemai-Azar AA, Rothrauff BB, Fu FH, Debski RE, Ayeni OR, Musahl V. Experimental Execution of the Simulated Pivot-Shift Test: A Systematic Review of Techniques. Arthroscopy 2015; 31:2445-54.e2. [PMID: 26321110 DOI: 10.1016/j.arthro.2015.06.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 06/09/2015] [Accepted: 06/18/2015] [Indexed: 02/02/2023]
Abstract
PURPOSE To conduct a systematic review to identify and summarize the various techniques that have been used to simulate the pivot-shift test in vitro. METHODS Medline, Embase, and the Cochrane Library were screened for studies involving the simulated pivot-shift test in human cadaveric knees published between 1946 and May 2014. Study parameters including sample size, study location, simulated pivot-shift technique, loads applied, knee flexion angles at which simulated pivot shift was tested, and kinematic evaluation tools were extracted and analyzed. RESULTS Forty-eight studies reporting simulated pivot-shift testing on 627 cadaveric knees fulfilled the criteria. Reviewer inter-rater agreement for study selection showed a κ score of 0.960 (full-text review). Twenty-seven studies described the use of internal rotation torque, with a mean of 5.3 Nm (range, 1 to 18 Nm). Forty-seven studies described the use of valgus torque, with a mean of 8.8 Nm (range, 1 to 25 Nm). Four studies described the use of iliotibial tract tension, ranging from 10 to 88 N. Regarding static simulated pivot-shift test techniques, 100% of the studies performed testing at 30° of knee flexion, and the most tested range of motion in the continuous tests was 0° to 90°. Anterior tibial translation was the most analyzed parameter during the simulated pivot-shift test, being used in 45 studies. In 22% of the studies, a robotic system was used to simulate the pivot-shift test. Robotic systems were shown to have better control of the loading system and higher tracking system accuracy. CONCLUSIONS This study provides a reference for investigators who desire to apply simulated pivot shift in their in vitro studies. It is recommended to simulate the pivot-shift test using a 10-Nm valgus torque and 5-Nm internal rotation torque. Knee flexion of 30° is mandatory for testing. LEVEL OF EVIDENCE Level IV, systematic review of basic science studies.
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Affiliation(s)
- Fabio V Arilla
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Department of Orthopaedic Surgery, University Hospital of Canoas, Canoas, Rio Grande Do Sul, Brazil
| | - Marco Yeung
- Division of Orthopaedic Surgery, McMaster University Medical Center, Hamilton, Ontario, Canada
| | - Kevin Bell
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Ata A Rahnemai-Azar
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Benjamin B Rothrauff
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Freddie H Fu
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Richard E Debski
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Olufemi R Ayeni
- Division of Orthopaedic Surgery, McMaster University Medical Center, Hamilton, Ontario, Canada
| | - Volker Musahl
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.; Orthopaedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A..
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Quantitative comparison of the pivot shift test results before and after anterior cruciate ligament reconstruction by using the three-dimensional electromagnetic measurement system. Knee Surg Sports Traumatol Arthrosc 2015; 23:2876-81. [PMID: 26342695 DOI: 10.1007/s00167-015-3776-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 08/28/2015] [Indexed: 01/30/2023]
Abstract
PURPOSE Tibial acceleration during the pivot shift test is a potential quantitative parameter to evaluate rotational laxity of anterior cruciate ligament (ACL) insufficiency. However, clinical application of this measurement has not been fully examined. This study aimed to measure and compare tibial acceleration before and after ACL reconstruction (ACLR) in ACL-injured patients. We hypothesized tibial acceleration would be reduced by ACLR and tibial acceleration would be consistent in the same knee at different time points. METHODS Seventy ACL-injured patients who underwent ACLR were enrolled. Tibial acceleration during the pivot shift test was measured using an electromagnetic measurement system before ALCR and at the second-look arthroscopy 1 year post-operatively. Tibial acceleration was compared to clinical grading and between ACL-injured/ACL-reconstructed and contralateral knees. RESULTS Pre-operative tibial acceleration was increased stepwise with the increase in clinical grading (P < 0.01). Tibial acceleration in ACL-injured knee (1.9 ± 1.2 m/s(2)) was larger than that in the contralateral knee (0.8 ± 0.3 m/s(2), P < 0.01), and reduced to 0.9 ± 0.3 m/s(2) post-operatively (P < 0.01). There was no difference between ACL-reconstructed and contralateral knee (n.s.). Tibial acceleration in contralateral knees was consistent pre- and post-operatively (n.s.). CONCLUSION Tibial acceleration measurement demonstrated increased rotational laxity in ACL-injured knees and its reduction by ALCR. Additionally, consistent measurements were obtained in ACL-intact knees at different time points. Therefore, tibial acceleration during the pivot shift test could provide quantitative evaluation of rotational stability before and after ACL reconstruction. LEVEL OF EVIDENCE III.
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Clinically relevant biomechanics of the knee capsule and ligaments. Knee Surg Sports Traumatol Arthrosc 2015; 23:2789-96. [PMID: 25894747 DOI: 10.1007/s00167-015-3594-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 03/31/2015] [Indexed: 01/16/2023]
Abstract
The paper describes the concepts of primary and secondary restraints to knee joint stability and explains systematically how the tibia is stabilised against translational forces and rotational torques in different directions and axes, and how those vary across the arc of flexion-extension. It also shows how the menisci act to stabilise the knee, in addition to load carrying across the joint. It compares the properties of the natural stabilising structures with the strength and stiffness of autogenous tissue grafts and relates those strengths to the strength of graft fixation devices. A good understanding of the biomechanical behaviour of these various structures in the knee will help the surgeon in the assessment and treatment of single and multi-ligament injuries.
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Tardy N, Marchand P, Kouyoumdjian P, Blin D, Demattei C, Asencio G. A Preliminary In Vivo Assessment of Anterior Cruciate Ligament-Deficient Knee Kinematics With the KneeM Device: A New Method to Assess Rotatory Laxity Using Open MRI. Orthop J Sports Med 2014; 2:2325967114525583. [PMID: 26535309 PMCID: PMC4555568 DOI: 10.1177/2325967114525583] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Methods of objectively measuring rotational knee laxity are either experimental or difficult to use in daily practice. A new method has been developed to quantitatively assess rotatory laxity using an open MRI system and new tool, the KneeM device. PURPOSE/HYPOTHESIS To perform a preliminary evaluation of a novel knee rotation measurement device to assess knee kinematics during flexion in an MRI field, in both anterior cruciate ligament (ACL)-deficient and healthy contralateral knees. The hypothesis was that the KneeM device would allow in vivo reproduction and analysis of knee kinematics during flexion in healthy and ACL-deficient knees. STUDY DESIGN Controlled laboratory study. METHODS Ten subjects (7 men and 3 women; mean age ± standard deviation, 32.3 ± 9.4 years) with ACL-deficient knees and contralateral uninjured knees participated in the study. An open MRI was performed with the KneeM device at a mean 4.9 months (range, 3.0-7 months) after ACL injury. The device exerted on the knee an anterior drawer force of 100 N, with an internal rotation of 20°, through the range of flexion (0°, 20°, 40°, and 60°). Both ACL-deficient and healthy contralateral knees were analyzed using the Iwaki method. RESULTS There was no statistical difference of anterior translation in the medial compartment between intact and ACL-deficient knees at all degrees of flexion. However, significant differences in the anterior translation of the lateral compartment were observed between ACL-deficient and intact contralateral knees at 0° and 20° of flexion (P = .005 and P = .002, respectively). Between 20° and 40°, the lateral plateau of ACL-deficient knees translated 7.7 mm posteriorly, whereas the medial compartment remained stable, reflecting a sudden external rotation of the lateral plateau under the femoral condyle. CONCLUSION This preliminary study suggests that measurement of tibiofemoral movements in both compartments during flexion using the KneeM device was useful for quantifying rotatory laxity in ACL-deficient knees. Moreover, this device seemed to allow a "mechanized pivot shift" and allowed reproduction of the "pivot" phase in the MRI field between 20° and 40° of flexion. CLINICAL RELEVANCE This device could be used for diagnostic purposes or to investigate the outcomes of ACL reconstructions.
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Affiliation(s)
| | | | | | | | - Christophe Demattei
- Department of Biostatistics, Epidemiology, Public Health and Medical Information, CHU de Nîmes, Nîmes, France
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Can rotatory knee laxity be predicted in isolated anterior cruciate ligament surgery? INTERNATIONAL ORTHOPAEDICS 2014; 38:1167-72. [PMID: 24477475 DOI: 10.1007/s00264-014-2287-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 01/13/2014] [Indexed: 12/12/2022]
Abstract
PURPOSE Despite the overall success of the surgical anterior cruciate ligament (ACL) reconstruction, some patients still present with instability symptoms even after the surgery, mainly due to the presence of associated lesions. At present, the pivot shift test has been reported to be the benchmark to assess rotatory knee laxity. The purpose of this study was to quantitatively evaluate rotatory knee laxity at time-zero in order to determine whether detected post-reconstruction laxity was predictable by its value measured before the reconstruction, which was hypothized to be influenced by the presence of associated lesions. METHODS Rotatory knee laxity was retrospectively analysed in 42 patients, including two different ACL reconstructions. The maximal anterior displacement and the absolute value of the posterior acceleration reached during the reduction of the tibial lateral compartment were intra-operatively acquired by using a navigation system and identified as discriminating parameters. For each parameter, statistical linear regression analysis (line slope and intercept) was performed between pre- and post-reconstruction values. RESULTS No statistically significant influence of the initial posterior acceleration on the post-reconstruction outcome was found (line slope, p > 0.05), although a statistically significant line intercept was indeed identified (p < 0.001). A statistically significant influence on the surgery outcome was instead found for the initial value of the anterior tibial displacement (line slope = 0.39, p = 0.004), meaning that, on average, about 40 % of the post-reconstruction lateral compartment displacement could be explained by the corresponding pre-reconstruction value. Both of these findings highlighted the importance of intra-operative quantification of rotatory knee laxity to identify correct indications for the surgery. CONCLUSIONS This study provided important implications for the future possibility of defining a quantifying tool able to assess rotatory knee laxity during ACL reconstruction. This could allow detection of additional injuries to secondary restraints by easily performing rotatory knee laxity tests, which in turn could reduce post-surgical recurrence of knee instability.
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