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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

Eur Radiol 2022 Jun 21. Epub 2022 Jun 21.

Institut de Radiologie de Sion, Groupe 3R, Sion, Switzerland.

Objectives: To develop a deep-learning algorithm for anterior cruciate ligament (ACL) tear detection and to compare its accuracy using two external datasets.

Methods: A database of 19,765 knee MRI scans (17,738 patients) issued from different manufacturers and magnetic fields was used to build a deep learning-based ACL tear detector. Fifteen percent showed partial or complete ACL rupture. Read More

BMC Musculoskelet Disord 2022 Jun 15;23(1):577. Epub 2022 Jun 15.

Center for Preventive Medical Sciences, Chiba University, Chiba, Japan.

Background: The development of computer-assisted technologies to diagnose anterior cruciate ligament (ACL) injury by analyzing knee magnetic resonance images (MRI) would be beneficial, and convolutional neural network (CNN)-based deep learning approaches may offer a solution. This study aimed to evaluate the accuracy of a CNN system in diagnosing ACL ruptures by a single slice from a knee MRI and to compare the results with that of experienced human readers.

Methods: One hundred sagittal MR images from patients with and without ACL injuries, confirmed by arthroscopy, were cropped and used for the CNN training. Read More

Contrast Media Mol Imaging 2022 1;2022:1711456. Epub 2022 Jun 1.

Department of Neurorehabilitation, Affiliated Sichuan Provincial Rehabilitation Hospital of Chengdu University of TCM, Chengdu 611130, Sichuan, China.

This study was aimed at investigating the diagnostic value of MRI based on K-space data reconstruction algorithm for anterior cruciate ligament (ACL) injury of knee joint and the influencing factors of ligament injury. 96 patients with ACL injury of knee joint were selected, and they were randomly divided into two groups: group A (arthroscopy) and group B (MRI examination), and another 96 healthy volunteers in the same period were selected as the control group. The test results of each indicator were compared. Read More

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

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

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

Semin Musculoskelet Radiol 2022 Jun 2;26(3):230-241. Epub 2022 Jun 2.

Institut für Diagnostische und Interventionelle Radiologie, Technical University of Munich, Munich, Germany.

Cruciate ligament reconstruction and meniscal surgery are frequently performed for restoration of knee joint stability and function after cruciate ligament and meniscus injuries, and they contribute to the prevention of secondary osteoarthritis. In cruciate ligaments, the most common procedure is anterior cruciate ligament (ACL) reconstruction. Meniscal surgery most frequently consists of partial meniscectomy and suture repair, rarely of a meniscus transplant. Read More

Arthrosc Tech 2022 May 22;11(5):e763-e766. Epub 2022 Apr 22.

Centre Orthopédique Santy, FIFA Medical Centre of Excellence, Groupe Ramsay-Générale de Santé, Hopital Privé Jean Mermoz, Lyon, France.

Acute injuries of the knee medial collateral ligament complex concomitant with anterior cruciate ligament injuries are common. The exact site of the injury may be difficult to diagnose preoperatively on magnetic resonance imaging. This study describes an arthroscopic sign that helps determine the site of the knee medial collateral ligament complex injury. Read More

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

Am J Sports Med 2022 Jul 25;50(8):2102-2110. Epub 2022 May 25.

University of Sydney, Sydney, Australia.

Background: An increase has been seen in the number of studies of anterior cruciate ligament reconstruction (ACLR) that use magnetic resonance imaging (MRI) as an outcome measure and proxy for healing and integration of the reconstruction graft. Despite this, the MRI appearance of a steady-state graft and how long it takes to achieve such an appearance have not yet been established.

Purpose: To establish whether a hamstring tendon autograft for ACLR changes in appearance on MRI scans between 1 and 2 years and whether this change affects a patient's ability to return to sports. Read More

Am J Sports Med 2022 Jun 20;50(7):1805-1814. Epub 2022 May 20.

Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.

Background: Anterolateral structure augmentation (ALSA) has been applied to prevent residual rotatory instability and lower clinical failure rates after anterior cruciate ligament (ACL) reconstruction (ACLR); however, the effect of combined ALSA on the maturity of ACL grafts remains unknown.

Purpose: To evaluate the graft maturity and patient-reported outcomes in patients who underwent double-bundle ACLR with or without ALSA.

Study Design: Cohort study; Level of evidence, 3. Read More

J Am Acad Orthop Surg Glob Res Rev 2022 05 1;6(5). Epub 2022 May 1.

From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda).

In the past 20 years, sports injuries in pediatric and adolescent athletes have increased dramatically, with anterior cruciate ligament (ACL) injuries accounting for more than 25% of all knee injuries at this age. Diagnosis is based on detailed clinical history, physical examination, and imaging assessment, where magnetic resonance imaging plays a central role. The growing immature skeleton presents specific characteristics, which require unique methods for surgical reconstruction, ideally avoiding the physes or minimizing the risk of damaging them. Read More

Sci Rep 2022 May 16;12(1):8044. Epub 2022 May 16.

Department of Electrical and Computer Engineering, University of Patras, 25500, Patras, Greece.

Anterior cruciate ligament (ACL) tear is one of the most common knee injuries. The ACL reconstruction surgery aims to restore healthy knee function by replacing the injured ligament with a graft. Proper selection of the optimal surgery parameters is a complex task. Read More

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

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

BMC Musculoskelet Disord 2022 May 6;23(1):426. Epub 2022 May 6.

Southern Medical University, 1838 shatai Road, Baiyun District, Guangzhou, 510515, Guangdong province, China.

Background: Notch volume is associated with anterior cruciate ligament (ACL) injury. Manual tracking of intercondylar notch on MR images is time-consuming and laborious. Deep learning has become a powerful tool for processing medical images. Read More

Malays Orthop J 2022 Mar;16(1):28-39

Department of Radiology, Universiti Sains Malaysia, Kubang Kerian, Malaysia.

Introduction: One session of high energy extracorporeal shockwave therapy (ESWT) was found to improve the healing of anterior cruciate ligament (ACL) after reconstruction in animal and human studies. This study investigated the effects of three and six sessions of low energy ESWT on graft incorporation and knee functions post ACL reconstruction in humans.

Materials And Methods: Thirty participants with ACL injuries were recruited and assigned equally into three groups with 10 participants per group (n=10). Read More

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

Ann Rehabil Med 2022 Apr 30;46(2):97-107. Epub 2022 Apr 30.

Department of Traumatology, University of Szeged, Szeged, Hungary.

Objective: To compare the outcomes of a 6-month-long accelerated rehabilitation with a 12-month-long rehabilitation. There is no consensus on the optimal duration of rehabilitation after anterior cruciate ligament reconstruction (ACLR). Trends in the past decades have shifted towards accelerated programs, often resulting in a return to play (RTP) at 4-6 months, postoperatively. Read More

J Orthop 2022 May-Jun;31:67-71. Epub 2022 Apr 11.

Department of Orthopaedic Surgery and Traumatology, Complexo Hospitalar do Médio Ave, Porto, Portugal.

Background: Mucoid degeneration of the anterior cruciate ligament (ACL) is an uncommon non-traumatic cause of knee pain and motion restriction, typically seen in a middle-aged population. Primarily, the management consists of partial arthroscopic debridement and notchplasty, which has proven satisfactory clinical and functional outcomes.

Study Objectives: This review aims to highlight key clinical, radiological and arthroscopic findings of mucoid ACL degeneration, and also to provide an approach to manage a symptomatic middle-aged athlete. Read More

Clin Radiol 2022 Jul 28;77(7):e526-e531. Epub 2022 Apr 28.

Department of Musculoskeletal Radiology, University Hospitals of Leicester, Leicester, UK.

Aim: To assess changes in anterior cruciate ligament (ACL) geometry and inclination in trochlear dysplasia (TD) and analyse their significance.

Materials And Methods: Ninety-nine consecutive knees with TD and 23 normal knee magnetic resonance imaging (MRI) examinations were included as controls (n=122). Varying degrees of TD were classified into four distinct groups (A-D) according to the Dejour classification. Read More

BMC Musculoskelet Disord 2022 Apr 29;23(1):402. Epub 2022 Apr 29.

Department of Orthopaedic Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No.138, Sheng-Li Road, Tainan, Taiwan, 70428.

Purpose: To investigate the relationship between the lateral femoral notch sign as well as the coronal lateral collateral ligament (LCL) sign and anterior tibial translation using the GNRB arthrometer in patients with anterior cruciate ligament (ACL) injuries.

Methods: Forty-six patients with ACL injuries were retrospectively included from May 2020 to February 2022; four patients were excluded due to incomplete data. Magnetic resonance imaging (MRI) were reviewed for the lateral femoral notch sign and the coronal LCL sign. Read More

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

Orthop Surg 2022 Jun 27;14(6):1109-1114. Epub 2022 Apr 27.

Department of Orthopaedics, the Fourth medical center of Chinese PLA General Hospital, Beijing, China.

Objective: To present the clinical characteristics of accumulated anterior cruciate ligament (ACL) damage among young male patients undergoing routine exercise, and to evaluate the related risk factors.

Methods: A retrospective study involving ACL-accumulated damage from June 2015 to December 2019 was conducted. Baseline characteristics, such as age, body mass index (BMI), training parameters, and clinical signs, were recorded. Read More

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

J Healthc Eng 2022 11;2022:2550120. Epub 2022 Apr 11.

College of Business, Abu Dhabi University, P.O. Box 59911, Abu Dhabi, UAE.

In recent times, knee joint pains have become severe enough to make daily tasks difficult. Knee osteoarthritis is a type of arthritis and a leading cause of disability worldwide. The middle of the knee contains a vital portion, the anterior cruciate ligament (ACL). Read More

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

Georgian Med News 2022 Mar(324):15-20

3N.P. Ogarev Mordovian State University, Russia.

Aim - in patients with knee meniscus injury, compare the therapeutic effectiveness of the use of meniscus suturing with anterior cruciate ligament (ACL) surgery with meniscus resection in combination with anterior cruciate ligament surgery to improve the treatment of such pathologies. The study examined patients (n=66) with knee meniscus injury who received surgical treatment in the traumatology department of the State Budgetary Healthcare Institution of the Moscow region "City Clinical Hospital № 12 of the Moscow City Health Department". The patients were randomized by gender, age, clinical, biochemical and instrumental data and divided into 2 groups. Read More

Can J Surg 2022 Mar-Apr;65(2):E269-E274. Epub 2022 Apr 12.

From the Department of Surgery, University of Manitoba, Winnipeg, Man. (Larose, Stranges, MacDonald, Rollins, Leiter, McRae); the Department of Radiology, University of Manitoba, Winnipeg, Man. (Davidson); the Department of Anatomy, University of Manitoba, Winnipeg, Man. (Peeler); the Pan Am Clinic Foundation, Winnipeg, Man. (Leiter, McRae); and the Pan Am Clinic, Winnipeg, Man. (Stranges, Davidson, MacDonald).

Background: There is a lack of prospective evidence to guide surgeons when making recommendations about the appropriate timing of surgical intervention for ruptured anterior cruciate ligament (ACL), activity modifications to reduce the risk of secondary injury before surgery, and the short- and long-term risks associated with delayed ACL reconstruction. This study aimed to determine whether longer wait times are associated with a prolonged decrease in quality of life and an increased incidence of secondary joint injury after ACL rupture.

Methods: We recruited 53 patients who presented between 2013 and 2017 at a single sports medicine minor injury clinic with a suspected acute ACL rupture, based on clinical examination; ACL rupture was confirmed on magnetic resonance imaging. Read More