941 results match your criteria Knee Posterior Cruciate Ligament Injuries MRI

A radiographic model predicting the status of the anterior cruciate ligament in varus knee with osteoarthritis.

BMC Musculoskelet Disord 2022 Jun 22;23(1):603. Epub 2022 Jun 22.

Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.

Purpose: The study aims to investigate the accuracy of different radiographic signs for predicting functional deficiency of anterior cruciate ligament (ACL) and test whether the prediction model constructed by integrating multiple radiographic signs can improve the predictive ability.

Methods: A total number of 122 patients from January 1, 2018, to September 1, 2021, were enrolled in this study. Among them, 96 patients were classified as the ACL-functional (ACLF) group, while 26 patients as the ACL-deficient (ACLD) group after the assessment of magnetic resonance imaging (MRI) and the Lachman's test. Read More

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Arthroscopic all - Inside repair of meniscal ramp lesions.

J ISAKOS 2022 Apr 30. Epub 2022 Apr 30.

Division of Sports Medicine, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA.

Meniscal ramp lesions are disruptions of the posterior meniscotibial attachment of the medial meniscus and are commonly associated with anterior cruciate ligament injuries. However, they can be frequently missed when reviewing standard magnetic resonance imaging and difficult to treat. In this presentation, we describe our approach to repair a meniscal ramp lesion using a minimally invasive all-inside technique. Read More

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The injury mechanism correlation between MRI and video-analysis in professional football players with an acute ACL knee injury reveals consistent bone bruise patterns.

Knee Surg Sports Traumatol Arthrosc 2022 Jun 13. Epub 2022 Jun 13.

Education and Research Department, Isokinetic Group, Bologna, FIFA Medical Centre of Excellence, Bologna, Italy.

Purpose: To analyze the MRI features, in particular bone bruises pattern, of Anterior Cruciate Ligament (ACL) injured footballers, and to correlate them with the characteristics of injury mechanism and situation obtained from direct video footage.

Methods: Nineteen professional football (soccer) players that sustained ACL injury while playing during an official match of First League Championship were included in the study. The video of injury was obtained from the Television broadcast. Read More

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Can MRI knee joint measurements predict the population at risk of ACL injury?

BMC Sports Sci Med Rehabil 2022 Jun 2;14(1):98. Epub 2022 Jun 2.

Department of Special Surgery, Division of Ophthalmology, The University of Jordan, Amman, Jordan.

Background: Anterior cruciate ligament (ACL) injuries have been increasing significantly over time. The relationship between the ACL injury and the knee joint structures is poorly understood. The purpose of this study is to examine whether the measurements of different structures in the knee joint are linked with ACL injury in affected patients. Read More

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Analysis of Knee Joint Injury Caused by Physical Training of Freshmen Students Based on 3T MRI and Automatic Cartilage Segmentation Technology: A Prospective Study.

Front Endocrinol (Lausanne) 2022 9;13:839112. Epub 2022 May 9.

Department of Radiology, First Affiliated Hospital of Army Medical University, Chongqing, China.

Background: The differential effects of various exercises on knee joint injury have not been well documented. Improper physical training can cause irreversible damage to the knee joint. MRI is generally used to precisely analyze morphological and biochemical changes in the knee cartilage. Read More

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Anterior Tibial Subluxation of Lateral Compartment Is Associated With High-Grade Rotatory Instability for Acute But Not Chronic Anterior Cruciate Ligament Injuries: An MRI Case-Control Study.

Arthroscopy 2022 May 10. Epub 2022 May 10.

Department of Orthopedics, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China, Orthopedics Research Institute of Zhejiang University, Hangzhou, China. Electronic address:

Purpose: To investigate whether anterior tibial subluxation obtained from magnetic resonance imaging (MRI) could be a predictor of high-grade rotatory instability for anterior cruciate ligament (ACL) injuries, including acute and chronic cases.

Methods: From September 2016 to August 2018, we retrospectively investigated 163 patients with ACL injuries who subsequently underwent primary ACL reconstruction. Among them, 30 patients with high-grade rotatory instability (grade II/III pivot shift) were included in the high-grade group, and their age and sex were matched 1:2 to low-grade cases (Read More

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Transtibial pull-out repair of lateral meniscus posterior root is beneficial for graft maturation after anterior cruciate ligament reconstruction: a retrospective study.

BMC Musculoskelet Disord 2022 May 12;23(1):445. Epub 2022 May 12.

Division of Joint Osteopathy and Traumatology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, People's Republic of China.

Purpose: To determine the repair of LMPR lesions would improve the ACL graft maturation.

Method: A total of 49 patients underwent ACL reconstruction were included in this study. Patients were furtherly sub-grouped according to the status of LMPR: intact (17), repair (16) and resected (16). Read More

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Preoperative and Postoperative Magnetic Resonance Imaging of the Cruciate Ligaments.

Magn Reson Imaging Clin N Am 2022 May 13;30(2):261-275. Epub 2022 Apr 13.

Department of Radiology, Imaging Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.

The anterior cruciate ligament and posterior cruciate ligament are key stabilizers of the knee. Magnetic resonance (MR) imaging excels at depiction of injury in both the native and reconstructed cruciate ligaments as well as associated injuries. This article reviews the anatomy, injury patterns, and relevant surgical techniques crucial to making accurate interpretation of MR imaging of the cruciate ligaments. Read More

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A Novel MRI Mapping Technique for Evaluating Bone Bruising Patterns Associated With Noncontact ACL Ruptures.

Orthop J Sports Med 2022 Apr 22;10(4):23259671221088936. Epub 2022 Apr 22.

Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut, USA.

Background: Bone bruise patterns in the knee can aid in understanding the mechanism of injury in anterior cruciate ligament (ACL) ruptures. There is no universally accepted magnetic resonance imaging (MRI) mapping technique to describe the specific locations of bone bruises.

Hypothesis: The authors hypothesized that (1) our novel mapping technique would show high interrater and intrarater reliability for the location of bone bruises in noncontact ACL-injured knees and (2) the bone bruise patterns reported from this technique would support the most common mechanisms of noncontact ACL injury, including valgus stress, anterior tibial translation, and internal tibial rotation. Read More

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High-grade pivot-shift phenomenon after anterior cruciate ligament injury is associated with asymmetry of lateral and medial compartment anterior tibial translation and lateral meniscus posterior horn tears.

Knee Surg Sports Traumatol Arthrosc 2022 Apr 23. Epub 2022 Apr 23.

Sports Medicine Department, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China.

Purpose: To investigate whether the high-grade pivot-shift phenomenon is associated with asymmetry of the lateral and medial compartment anterior tibial translation (L-ATT and M-ATT) and lateral meniscus posterior horn (LMPH) tears in anterior cruciate ligament (ACL) injuries.

Methods: A retrospective analysis was performed on 192 consecutive patients who had complete ACL injuries between January 2019 and December 2020. Among these, 156 met the inclusion criteria. Read More

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Treatment of tibia avulsion fracture of posterior cruciate ligament with total arthroscopic internal fixation with adjustable double loop plate: A retrospective cohort study.

Injury 2022 Jun 6;53(6):2233-2240. Epub 2022 Apr 6.

Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. Electronic address:

Aim: To evaluate the effects of treating tibia avulsion fracture of the posterior cruciate ligament (PCL) by internal fixation with an adjustable double loop plate under the arthroscopic.

Methods: Patients with a tibia avulsion fracture of the PCL were identified and were divided into two groups. X-ray, CT, and magnetic resonance imaging (MRI) were used to evaluate the injury and the fixation of the knee. Read More

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Quantitative evaluation of the tibiofemoral joint cartilage by T2 mapping in patients with acute anterior cruciate ligament injury vs contralateral knees: results from the subacute phase using data from the NACOX study cohort.

Osteoarthritis Cartilage 2022 Jul 11;30(7):987-997. Epub 2022 Apr 11.

Clinical Epidemiology Unit, Orthopedics, Department of Clinical Sciences Lund, Lund University, Lund, Sweden. Electronic address:

Objective: Immediate cartilage structural alterations in the acute phase after an anterior cruciate ligament (ACL) rupture may be a precursor to posttraumatic osteoarthritis (PTOA) development. Our aim was to describe changes in cartilage matrix in the subacute phase of the acutely ACL-injured knee compared to the contralateral uninjured knee.

Design: Participants (n = 118) aged 15-40 years with an acute ACL injury were consecutively included in subacute phase after acute ACL-injury and underwent MRI (mean 29 days post trauma) of both knees. Read More

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Anatomical reconstruction of the Posterolateral Corner of the knee preserving dynamic function of the popliteus tendon complex.

Asia Pac J Sports Med Arthrosc Rehabil Technol 2022 Apr 15;28:1-5. Epub 2022 Mar 15.

Department of Orthopaedic Surgery, Saiseikai Shimonoseki General Hospital, 8-5-1, Yasuoka-cho, Shimonoseki, 759-6603, Japan.

Almost cases of Posterolateral Corner (PLC) injuries are combined injuries involving the anterior or posterior cruciate ligament. Although numerous techniques of PLC reconstruction have been reported, it is unknown whether these techniques reconstruct PLC sufficiently. The anatomy of PLC is complex of tendon-muscle and ligament. Read More

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Patients with isolated posterior cruciate ligament rupture had a higher posterior intercondylar eminence.

BMC Musculoskelet Disord 2022 Mar 23;23(1):276. Epub 2022 Mar 23.

Department of Sports Medicine, Peking University Third Hospital. Institute of Sports Medicine of Peking University. Beijing Key Laboratory of Sports Injuries, Beijing, China.

Background: To evaluate the anatomic geometry of the posterior intercondylar eminence and its association with PCL injury risk.

Methods: Patients who underwent primary PCL reconstruction from 2015 to 2018 were retrospectively analyzed. The control group included inpatients diagnosed with ACL rupture because of a sports-related accident during the same period, matched by age, gender, height, weight, and side of injury. Read More

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Outcomes of Combined Lateral Meniscus Posterior Root Repair and Anterior Cruciate Ligament Reconstruction.

Orthop J Sports Med 2022 Mar 11;10(3):23259671221083318. Epub 2022 Mar 11.

Fortius Clinic, London, UK.

Background: Lateral meniscus posterior root tears (LMPRTs) almost always occur in association with anterior cruciate ligament (ACL) tears. Their repair is advocated to restore the stabilizing and load-sharing functions of the meniscus.

Purpose: To study the functional outcomes of combined arthroscopic repair of LMPRTs and ACL reconstruction (ACLR). Read More

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Combined Meniscus Repair and Anterior Cruciate Ligament Reconstruction.

Arthroscopy 2022 03;38(3):670-672

University of Vermont, Larner College of Medicine, Orthopaedics and Rehabilitation, Burlington, Vermont, U.S.A.. Electronic address:

Meniscal tear patterns associated with anterior cruciate ligament (ACL) tears, such as root tears and ramp lesions are common but less easily recognized on magnetic resonance imaging (MRI) compared with a complete radial tear or a locked bucket-handle tear. Timely treatment of these tears improves outcomes in the setting of ACL reconstruction. While physical examination does not enable a definitive diagnosis of meniscal root tears and ramp lesions, high-grade laxity, including a 3+ Lachman and 3+ pivot shift, should raise suspicions for these tear patterns. Read More

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Optimal Combination of Femoral Tunnel Orientation in Anterior Cruciate Ligament Reconstruction Using an Inside-out Femoral Technique Combined With an Anterolateral Extra-articular Reconstruction.

Am J Sports Med 2022 04 4;50(5):1205-1214. Epub 2022 Mar 4.

Department of Orthopaedic Surgery, University Hospital of Saint-Etienne, Saint-Etienne, France.

Background: The optimal orientation of the anterolateral extra-articular reconstruction (ALLR) femoral tunnel to avoid collision with the anterior cruciate ligament reconstruction (ACLR) femoral tunnel is not clearly defined in the literature.

Purpose: To define the optimal combination of orientations of the ALLR femoral tunnel and the ACLR femoral tunnel using an inside-out technique to minimize risk of collision between these tunnels.

Study Design: Descriptive laboratory study. Read More

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The prevalence and parameters of fabella and its association with medial meniscal tear in China: a retrospective study of 1011 knees.

BMC Musculoskelet Disord 2022 Mar 1;23(1):188. Epub 2022 Mar 1.

Department of Imaging, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, No. 1111, Xianxia Road, 200336, Shanghai, China.

Background: Fabella is a sesamoid bone of knee that has potential biomechanical function. We aimed to examine the fabellar prevalence and parameters in Chinese population and test the hypothesis that fabellar presence and morphology were associated with meniscus tear or ligament injury.

Methods: A total of 1011 knee magnetic resonance imaging scans from 979 patients with knee pain were analyzed retrospectively. Read More

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Anterior tibial subluxation measured under a modified protocol is positively correlated with posterior tibial slope: a comparative study of MRI measurement methods.

Knee Surg Sports Traumatol Arthrosc 2022 Feb 26. Epub 2022 Feb 26.

Department of Sports Medicine, Peking University Third Hospital, No. 49, Huayuanbei Road, Haidian District, Beijing, China.

Purpose: Anatomic factors, such as posterior tibial slope (PTS) and anterior tibial subluxation (ATS) obtained by quantitative measurement, have been proposed as predictors for clinical outcomes of anterior cruciate ligament (ACL) reconstruction. However, the correlation between PTS and ATS is controversial, and the method for quantitative ATS measurement remains unsettled. This study aimed to identify the correlation between PTS and ATS in patients with injured and intact ACLs and compare the two ATS measuring protocols. Read More

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February 2022

Non-Anatomical Arthroscopic All-Inside Repair of Medial Meniscus Posterior Root Tear to Posterior Cruciate Ligament for Patients with Normal Lower Limb Alignment.

Orthop Surg 2022 Feb;14(2):397-404

Arthritis Clinic & Research Center (ACRC), Peking University People Hospital, Beijing, China.

Objective: To describe a non-anatomical arthroscopic all-inside repair of medial meniscus posterior root tear (MMPRT) to posterior cruciate ligament (PCL) technique for patients with normal lower limb alignment and to evaluate the short-term clinical and radiologic outcomes.

Methods: MMPRT directly to PCL was repaired with all-inside horizontal mattress suturing technique rather than by the transtibial pullout suture technique or anchor suturing repair technique in 20 Laparade Type II MMPRT patients with normal lower limb alignment during 2018-2019. The clinical and radiological outcomes were evaluated retrospectively for at least 2 years follow-up. Read More

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February 2022

Protruding anterior medial meniscus and posterior tibial translation as secondary signs of complete and partial posterior cruciate ligament tear.

Br J Radiol 2022 May 9;95(1133):20210976. Epub 2022 Feb 9.

Department of Physical & Rehabilitation Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.

Objective: To evaluate whether measurement of protruding anterior meniscus in the medial compartment (PAMM) and posterior tibial translation (PTT) can be used as a secondary sign of posterior cruciate ligament (PCL) tear for differential diagnosis of partial or complete tear.

Methods: 21 cases with complete PCL tear, 35 cases with partial PCL tear, and 55 normal cases were reviewed in this retrospective study. PTT and PAMM were measured from the MR images associated with each case. Read More

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Increased lateral and medial femoral posterior radius ratios are risk factors for anterior cruciate ligament injury.

BMC Musculoskelet Disord 2022 Feb 5;23(1):114. Epub 2022 Feb 5.

Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China.

Background: Many studies have shown that distal femoral sagittal morphological characteristics have a clear relationship with knee joint kinematics. The aim of this study was to determine the relationship between distal femoral sagittal morphological characteristics and noncontact anterior cruciate ligament (ACL) injury.

Methods: A retrospective case-control study of 148 patients was conducted. Read More

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February 2022

Radial tears in the anterior third of the lateral meniscus are frequently combined with horizontal tears.

Orthop Traumatol Surg Res 2022 May 31;108(3):103223. Epub 2022 Jan 31.

Department of Orthopedic Surgery, College of Medicine, University of Ulsan, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, South Korea.

Introduction: Radial tears of the lateral meniscus are often located in the junction of the middle and posterior third or posterior tibial attachment. However, we observed that a few cases of radial tears occurred in the anterior third of the lateral meniscus, and in many cases, they were accompanied by horizontal tears.

Hypothesis: Radial tears are more frequently accompanied by horizontal tears in the anterior third of the lateral meniscus than in other regions. Read More

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Quantifying graft impingement in anterior cruciate ligament reconstruction.

Knee 2022 Jan 26;34:270-278. Epub 2022 Jan 26.

Glasgow Royal Infirmary, NHS Greater Glasgow & Clyde, Glasgow, UK. Electronic address:

Background: Anterior cruciate ligament reconstructions (ACLR) fail at a rate of 10-15%, with graft impingement often a cause. In this study we investigate the prevalence and causes of impingement seen during ACLR surgery.

Methods: We reviewed consecutive primary ACLR from 2012-2018. Read More

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January 2022

Etiology of posterior meniscus root tears: medial vs. lateral.

Arch Orthop Trauma Surg 2022 Jan 25. Epub 2022 Jan 25.

Klinik für Orthopädie und Unfallchirurgie, Martin Luther Krankenhaus, Caspar-Theyss-Strasse 27-31, 14193, Berlin, Germany.

Purpose: The aim of this study was to generate more information on the etiology and pathogenesis of medial (MM) and lateral (LM) meniscus root tears. Our hypothesis was that root tears of the MM predominantly result from degenerative damage, whereas root injuries of the LM are mainly of traumatic origin.

Methods: Consecutively, 53 patients with a root tear of the medial meniscus (MMRT) and 51 patients with a root tear of the lateral meniscus (LMRT) were included in this study. Read More

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January 2022

The accuracy of MRI in diagnosing and classifying acute traumatic multiple ligament knee injuries.

BMC Musculoskelet Disord 2022 Jan 13;23(1):43. Epub 2022 Jan 13.

Department of Spinal Orthopaedics, General Hospital of Ningxia Medical University, No. of 804, Shengli Street, Yinchuan, 750004, China.

Background: Magnetic resonance imaging (MRI) is widely used for the evaluation of knee injuries, however, the accuracy of MRI in classifying multiple ligament knee injuries (MLKIs) remains unknown. This study aimed to investigate the accuracy of MRI in diagnosing and classifying acute traumatic MLKIs, we hypothesize that MRI had high accuracy in detecting and classifying MLKIs.

Methods: The clinical data of 97 patients who were diagnosed with acute traumatic MLKIs and managed by multi-ligament reconstruction between 2012 and 2020 were retrospectively reviewed. Read More

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January 2022

Tibial Avulsion with Intra-Articular Entrapment of Medial Collateral Ligament with Posterior Cruciate Ligament Tear with Posterior Root Medial Meniscus Tear: A Case Report of an Unusual Injury Triad.

J Orthop Case Rep 2021 Aug;11(8):28-32

Department of Orthopaedics, Dr. DY Patil Medical College and Hospital, Pune. Maharashtra, India.

Introduction: The medial collateral ligament (MCL) is the most commonly injured ligament of the knee joint; however, its displacement into the medial knee compartment is rare. Traumatic posterior root of medial meniscus (PRMM) tears are commonly found in high-grade injuries involving anterior cruciate ligament (ACL) or posterior cruciate ligament (PCL) tears along with MCL tears. Diagnosis of these injuries can be made by a preoperative magnetic resonance imaging (MRI), but they can be missed at times due to severe soft-tissue swelling in the acute phase. Read More

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Mechanism of non-contact ACL injury: OREF Clinical Research Award 2021.

J Orthop Res 2022 03 6;40(3):531-540. Epub 2022 Jan 6.

Department of Rehabilitation Medicine, National Institutes of Health, Bethesda, Maryland, USA.

Anterior cruciate ligament (ACL) ruptures significantly impact athletes in terms of return to play and loss of long-term quality of life. Before the onset of this study, understanding the mechanism of ACL injury was limited. Thus, the primary focus of this manuscript is to describe our multi-faceted approach to uncovering the mechanism of noncontact ACL injury (NC-ACLI) with the goal of developing preventive strategies. Read More

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Meniscal Ramp Lesions: Anatomy, Epidemiology, Diagnosis, and Treatment.

J Am Acad Orthop Surg 2022 Mar;30(6):255-262

From the Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO.

Injuries to the medial meniscus meniscocapsular junction, also known as ramp lesions, are common in the setting of anterior cruciate ligament injuries with a prevalence of 9% to 42%. Anatomically, ramp lesions involve disruption of the posterior meniscocapsular junction and meniscotibial ligaments. Biomechanically, ramp lesions are associated with an increase in anterior tibial translation and internal and external tibial rotation in anterior cruciate ligament-deficient cadaveric knees. Read More

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[Prevalence of injury of the medial collateral ligament of the knee assessed by magnetic resonance].

Acta Ortop Mex 2021 May-Jun;35(3):271-275

Clínica del Dolor Hospital Ángeles México. México.

Introduction: The medial collateral ligament (MCL) is one of the main stabilizers of the knee, but its injury occurs in conjunction with other ligaments.

Objective: To determine the prevalence of MCL lesions by magnetic resonance imaging, their degrees and associated lesions in our institution.

Material And Methods: Retrospective study from January to April 2018 where KNEE MRIs were evaluated where the MCL lesion was presented to evaluate the degree and type of associated injuries. Read More

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December 2021