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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

Zhongguo Gu Shang 2022 Jun;35(6):506-11

Department of Orthopaedics, the Second Hospital of Lanzhou University, Lanzhou 730030, Gansu, China.

Objective: To compare difference in clnical efficacy between arthroscopic double posterior internal approach and incisional surgery for acute simple posterior cruciate ligament tibial avulsion fractures.

Methods: Totally 52 patients with acute simple posterior cruciate ligament tibial avulsion fractures treated from June 2016 to June 2020 were retrospectively analyzed and divided into two groups according to different surgical protocols, 27 patients in arthroscopic group were treated with arthroscopic double posterior internal approach, including 16 males and 11 females, aged from 19 to 52 years old, with an average age of (34.9±9. Read More

Dis Markers 2022 3;2022:6053410. Epub 2022 Jun 3.

Department of Orthopaedics, Cangzhou Central Hospital, Cangzhou, China.

Objective: To explore the effect of calcitriol combined with zoledronic acid in posterior cruciate ligament tibial avulsion fractures of the knee joint in patients with diabetic osteoporosis.

Methods: Between January 2020 and January 2022, 60 patients with diabetic osteoporosis treated in our hospital were included. All patients underwent knee joint posterior cruciate ligament tibial avulsion fractures, and they were randomized (1 : 1) into the observation group (calcitriol combined with zoledronic acid) and control group (calcitriol). 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

J Knee Surg 2022 Jun 10. Epub 2022 Jun 10.

Department of Medicine of Sensory and Motor Organs, Division of Orthopedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.

This study was conducted to present remnant-preserving anterior cruciate ligament (ACL) augmentation as a useful option for partial ACL injury in multiligament knee injury (MLKI) cases, which may also contribute to conserving graft resources. The present study involved patients diagnosed with MLKI at our institute from Spring 2006 to February 2021. A total of 71 MLKI cases were provided surgery due to knee instability and disability. Read More

JBJS Essent Surg Tech 2022 Jan-Mar;12(1). Epub 2022 Jan 7.

Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois.

Anatomic posterolateral corner (PLC) reconstruction is utilized for ligamentous knee instability associated with PLC injury in patients who desire a return to active lifestyles. The fibular collateral ligament (FCL) and popliteal tendon (PLT) are reconstructed in anatomic fashion according to techniques described by LaPrade et al.. Read More

JBJS Essent Surg Tech 2022 Jan-Mar;12(1). Epub 2022 Mar 21.

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

Tenosynovial giant cell tumor (T-GCT) and pigmented villonodular synovitis (PVNS) are interchangeable terms for an uncommon benign proliferation of synovial tissue. Although neoplastic and inflammatory origins have been hypothesized, the etiology of this condition is unknown. There is controversy regarding surgical treatment, as the open and arthroscopic approaches to synovectomy have shown comparable reported outcomes in the literature. 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

Curr Rev Musculoskelet Med 2022 Jun 2. Epub 2022 Jun 2.

UPMC Freddie Fu Sports Medicine Center, 3200 S Water St., Pittsburgh, PA, 15203, USA.

Purpose Of Review: The significance of posterior tibial slope (PTS) in the setting of anterior cruciate ligament (ACL) injury and reconstruction has been increasingly recognized in recent years. The purpose of this article is to review the biomechanical and clinical studies of PTS in conjunction with ACL injuries, providing an evidence-based approach for the evaluation and management of this patient population.

Recent Findings: Several biomechanical and clinical studies suggest that PTS > 12° may be considered with increased strain on the native ACL fibers (or reconstructed graft) and greater anterior tibial translation, predisposing patients to a recurrent ACL injury. Read More

Orthop Traumatol Surg Res 2022 May 25:103336. Epub 2022 May 25.

Department of Orthopaedics, Affiliated Hospital of Nantong University, No.20 Xisi Road, Nantong, Jiangsu 226001, China. Electronic address:

Introduction: Posterior cruciate ligament (PCL) injury hampers the rotational stability and stability front to back of the knee joint, seriously affecting the quality of life of patients. Some studies have reported that the peroneus longus tendon (PLT) has sufficient length and strength.

Hypothesis: We hypothesized that the PLT can be used as a novel appropriate material for PCL reconstruction therapy. Read More

J Exp Orthop 2022 May 30;9(1):50. Epub 2022 May 30.

Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.

Purpose: Surgical reconstruction is the current standard for ACL rupture treatment in active individuals. Recently, there is renewed interest in primary repair of proximal ACL tears. Despite this, ACL biology and healing potential are currently not well understood. Read More

Int Orthop 2022 May 26. Epub 2022 May 26.

Department of Orthopedics, Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University, 155 Nanjing North StreetLiaoning Province, Shenyang, 110001, People's Republic of China.

Purpose: We developed an augmentation technique for PCL reconstruction with independent internal brace reinforcement and evaluated the functional outcome after PCL reconstruction employing autologous hamstrings augmented with an internal brace system for patients with isolated or combined grade 3 posterior instability who were treated with this technique.

Methods: From January 2016 to January 2018, patients with isolated or combined grade 3 PCL tears who underwent single-bundle PCL reconstruction using autologous hamstrings augmented with independent internal braces were studied. The function of the operated knee was evaluated according to the International Knee Documentation Committee (IKDC) score, Lysholm score, and Tegner activity score. Read More

Am J Sports Med 2022 Jul 26;50(8):2070-2074. Epub 2022 May 26.

Children's Healthcare of Atlanta, Atlanta, Georgia, USA.

Background: Injuries to the meniscus root attachments result in extrusion of the meniscus, impaired distribution of hoop stresses, and progressive degenerative articular wear. As a result of these deleterious effects, there has been increasing emphasis on repairing meniscus root injuries to restore structure and function.

Purpose: To describe meniscus root tear patterns, associated injuries, and outcomes of transosseous meniscus root repair in a series of pediatric patients. 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 23;50(8):2083-2092. Epub 2022 May 23.

Department of Orthopaedics & Rehabilitation, University of New Mexico, Albuquerque, New Mexico, USA.

Background: Medial-sided knee injuries can lead to symptomatic valgus laxity or anteromedial rotatory instability and may require surgery, particularly in the setting of cruciate tears and tibial-sided medial collateral ligament (MCL) avulsions. The LaPrade (LP) technique utilizes 2 free grafts to reconstruct the superficial MCL (sMCL) and the posterior oblique ligament (POL). An alternative MCL reconstruction devised by the senior author comprises an anatomic single-bundle reconstruction using a free graft to reconstruct the sMCL with advancement and imbrication of the posteromedial capsule/POL (MCL anatomic reconstruction with capsular imbrication [MARCI] technique). Read More

J Orthop 2022 Jul-Aug;32:31-35. Epub 2022 May 9.

Midwest Orthopaedics at Rush University Medical Center, Chicago, IL, USA.

Background: Meniscal ramp lesions are injuries of the posterior horn of the medial meniscus at the meniscocapsular junction or the meniscotibial ligament and are frequently associated with concomitant anterior cruciate ligament (ACL) injury.

Objective: To review the current literature on meniscal ramp lesion management to better define the indications for and outcomes of repair.

Methods: A narrative literature review was performed using PubMed, Embase, and Scopus databases. Read More

J Orthop Surg (Hong Kong) 2022 May-Aug;30(2):10225536221101701

Department of Orthopedics, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.

To investigate the curative effects of improved non-absorbable high-strength fixation under arthroscopy on posterior cruciate ligament (PCL) avulsion fracture. A retrospective analysis was performed on 16 cases of PCL avulsion fracture in 15 patients who underwent high-strength suture fixation under arthroscopy from December 2017 to November 2019. According to the Meyers-McKeever classification, there were 2 cases of type II and 14 cases of type III. Read More

Clin Radiol 2022 May 16. Epub 2022 May 16.

Department of Orthopaedics and Joint Replacement Surgery, Indraprastha Apollo Hospitals, New Delhi, India.

Aim: To investigate if the pattern of fluorine-18-labelled sodium fluoride (F-NaF) uptake on integrated positron-emission tomography (PET)/magnetic resonance imaging (MRI) of bone marrow lesions (BML) and osteophytes differs between different knee compartments.

Materials And Methods: Sixteen patients with no prior history of knee injury with or without pain were recruited for the study. The images of both knees were acquired on simultaneous PET/MRI. Read More

Clin Biomech (Bristol, Avon) 2022 Jun 7;96:105661. Epub 2022 May 7.

Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.

Background: Inhibitions in the acquisition of accurate information about the environment can affect control of the lower extremities and lead to anterior cruciate ligament injury. This study aimed to clarify the effects of limited prior knowledge of the height of the fall, as well as limited visual input, on lower limb and trunk motion and ground reaction force during landing.

Methods: Twenty healthy university students were recruited. 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

J ISAKOS 2022 02 4;7(1):27-34. Epub 2021 Oct 4.

Division of Orthopaedic Surgery, McMaster University, 1280 Main Street West, Hamilton, ON, L8N 3Z5, Canada. Electronic address:

Importance: The posterior cruciate ligament (PCL) is involved in almost one-third of all knee injuries. Surgical management of PCL injuries is currently controversial, and no single graft material is determined as superior in primary PCL reconstruction. A growing body of literature has demonstrated the safety and versatility of the quadriceps tendon (QT) autograft in arthroscopic knee ligament reconstruction. Read More

BMC Musculoskelet Disord 2022 May 5;23(1):420. Epub 2022 May 5.

Department of Orthopaedics, the Affiliated Hospital of Southwest Medical University, Sichuan Provincial Laboratory of Orthopaedic Engineering, Luzhou, Sichuan, 646000, People's Republic of China.

Background: Anteromedial tibial plateau fracture with posterolateral corner (PLC) injury is a relatively rare combined injury in the clinic. In addition, there is no unified treatment scheme for this combined injury. The purpose of this study was to evaluate the clinical and imaging results of single-stage arthroscopic-assisted surgery for anteromedial tibial plateau fracture with PLC injury, and to explore the advantages of this surgical technique. 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

Am J Sports Med 2022 Jun 5;50(7):1823-1831. Epub 2022 May 5.

Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK.

Background: Although a medial collateral ligament (MCL) injury is associated with anteromedial rotatory instability (AMRI) and often with an anterior cruciate ligament (ACL) injury, there has been little work to develop anteromedial (AM) reconstruction to address this laxity.

Purpose: To measure the ability of a novel "anatomic" AM reconstruction technique to restore native knee laxity for isolated AM insufficiency and combined AM plus posteromedial insufficiency.

Study Design: Controlled laboratory study. Read More

Arthroscopy 2022 05;38(5):1605-1607

Risk for anterior cruciate ligament (ACL) injury is greater in female than in male patients for a myriad of reasons, with osseous anatomy about the knee proving to be one significant risk factor for ACL injury and/or ACL graft failure. While femoral intercondylar notch size/shape and posterior tibial slope have been well-examined in this regard for their contribution to potential ACL injury, morphology of the lateral femoral condyle is a newer entity that may be linked to risk for ACL injury. Smaller/stenotic femoral intercondylar notches, increased posterior tibial slope of the lateral tibial plateau, and increased posterior condylar depth of the lateral femoral condyle have all been shown to increase risk for ACL injury and/or ACL graft failure. 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

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

Acta Ortop Mex 2021 Sep-Oct;35(5):469-473

Servicio de Traumatología y Ortopedia, Centro Médico Naval. Secretaría de Marina Armada de México. Ciudad de México. México.

Introduction: Anterior cruciate ligament injuries are common, however, tibial avulsions in adults are rare. The gold standard continues to be reconstruction. In recent years, primary repairs have been reported in femoral side lesions by bioabsorbable anchorage. Read More

Orthop J Sports Med 2022 Apr 8;10(4):23259671221086669. Epub 2022 Apr 8.

Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA.

Background: Anterior cruciate ligament (ACL) tears are often associated with other ligamentous injuries. The side-to-side difference in heel height can represent a valuable diagnostic tool in the setting of multiligamentous injuries.

Purpose: To assess in a cadaveric model how sequential sectioning of the static stabilizing structures of the knee (ACL, fibular collateral ligament [FCL], popliteus tendon [PLT], popliteofibular ligament [PFL], and medial collateral ligament [MCL]) influences heel-height measurements when comparing groups undergoing initial transection of the ACL versus FCL and to assess posterior tibial slope after sequential sectioning. Read More