Search Our Scientific Publications & Authors

J Surg Orthop Adv 2018 ;27(4):325-328

Department of Orthopaedic Surgery, University of Illinois at Chicago.

The goal of this study was to define the course of the popliteal artery (PA) and determine any variability among different patient demographics; by identifying risk factors for injury, surgeons can decrease patient morbidity and mortality. Ninety-four adult magnetic resonance imaging studies of the knee were reviewed. In extension, the artery is at most 7. Read More

J Biomech 2019 Feb 12. Epub 2019 Feb 12.

Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.

Non-contact anterior cruciate ligament (ACL) injuries account for 70% of all ACL injuries, and can lead to missed time from activity for athletes and a predisposition for knee osteoarthritis. Prior research has shown that athletes who land in a stiff manner, with larger internal knee adduction and extension moments, are at greater risk for an ACL injury. A three-dimensional accelerometer placed at the tibial tuberosity may prove to be a low-cost means of assessing these risk factors. Read More

Injury 2019 Feb 1. Epub 2019 Feb 1.

Department of Orthopaedics Unit 3, Christian Medical College, Ida Scudder Road, Vellore, Tamil Nadu 632004, India.

Background: Contrary to acute posterior cruciate ligament (PCL) bony tibial avulsions, surgical management of chronic injuries is technically challenging and appears to be controversial. We sought to assess the outcome of a novel screw post augmentation technique in neglected cases.

Methods: 16 patients were followed up in a tertiary single-center retrospective study. Read More

Orthop J Sports Med 2019 Jan 22;7(1):2325967118819831. Epub 2019 Jan 22.

Department of Orthopaedics, Duke University, Durham, North Carolina, USA.

Background: Knee positions involved in noncontact anterior cruciate ligament (ACL) injury have been studied via analysis of injury videos. Positions of high ACL strain have been identified in vivo. These methods have supported different hypotheses regarding the role of knee abduction in ACL injury. Read More

SAGE Open Med Case Rep 2019 11;7:2050313X18823102. Epub 2019 Jan 11.

Department of Orthopedic Surgery, Jichi Medical University, Shimotsuke, Japan.

Knee dislocation with concomitant multiligament injury is a rare and devastating injury. We report the successful repair of a rare case of open knee dislocation with concomitant multiligament injury and patellar tendon rupture of an 18-year-old male due to a motorcycle accident. The patient presented with an open wound running parallel to the knee joint line and patellar tendon rupture with full exposure of the cartilage of the distal femur. Read More

Arthroscopy 2019 Feb;35(2):302-303

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

In the context of anterior cruciate ligament reconstruction surgery, anterolateral ligament reconstruction is now recognized as a reliable option to control rotatory instability and should be considered in the knee surgeon's modern armamentarium. By highlighting its daily practical application, this infographic presents the indications for this specific additional lateral augmentation, the anatomic and biomechanical principles that underline its rationale, and the clinical outcomes from recent large series. In 2013, Claes et al. Read More

Sports Med 2019 Jan 28. Epub 2019 Jan 28.

Division of Physical Therapy, Center for Human Movement Science, School of Medicine, The University of North Carolina at Chapel Hill, CB# 7135 Bondurant Hall, Chapel Hill, NC, 27599-7135, USA.

Background: Anterior cruciate ligament (ACL) injury is one of the most common injuries in sports, and the injury mechanisms are not completely clear. Bone bruises seen on magnetic resonance imaging (MRI) following ACL injuries may provide significant information for determining ACL injury mechanisms.

Objective: The aim was to determine ACL injury mechanisms through an evaluation of locations of bone bruises associated with ACL injury. Read More

Orthop J Sports Med 2019 Jan 10;7(1):2325967118820057. Epub 2019 Jan 10.

Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA.

Background: An altered tibial position is still present despite anterior cruciate ligament (ACL) reconstruction. It has been demonstrated that an abnormal tibial position after an ACL injury may play a role in subsequent injuries to the meniscus, which can lead to early cartilage degeneration.

Purpose: To determine changes in both the tibial position and the meniscal matrix present before and after ACL reconstruction as well as to evaluate the association between these 2 variables in ACL-injured knees 3 years after reconstruction. Read More

Am J Sports Med 2019 Feb 18;47(2):318-323. Epub 2019 Jan 18.

The Steadman Clinic, Vail, Colorado, USA.

Background:: Recent clinical studies identified sagittal plane posterior tibial slope as a risk factor for increased postoperative laxity after single-bundle posterior cruciate ligament reconstruction (PCLR).

Purpose/hypothesis:: To retrospectively compare the degree of posterior tibial slope and its effect on posterior tibial translation (PTT) after double-bundle (DB) PCLR. Our null hypothesis was that preoperative tibial slope would not be associated with graft laxity. Read More

Am J Sports Med 2019 Jan 16:363546518818820. Epub 2019 Jan 16.

Centre Orthopédique Santy, FIFA Medical Center of Excellence, Hôpital Privé Jean Mermoz, Groupe Ramsay-Generale de Santé, Lyon, France.

Background:: Lateral meniscus posterior root tears (LMPRTs) result in loss of hoop forces and significant increases in tibiofemoral contact pressures. Preoperative imaging lacks reliability; therefore, holding an appropriate index of suspicion, based on the epidemiology of and risk factors for LMPRT, may reduce the rate of missed diagnoses.

Purpose:: The primary objectives of this study were to evaluate the incidence of and risk factors for lateral meniscus root lesions in a large series of patients undergoing anterior cruciate ligament (ACL) reconstruction. Read More

Am J Sports Med 2019 Feb 14;47(2):303-311. Epub 2019 Jan 14.

Department of Orthopaedics, Rhode Island Hospital, Providence, Rhode Island, USA.

Background:: Multiple anatomic features of the femoral condyles and tibial plateau have been shown to influence knee biomechanics and risk of anterior cruciate ligament (ACL) injury. However, it remains unclear how these anatomic factors affect the midterm outcomes of ACL reconstruction.

Hypothesis:: Decreased femoral notch width, increased posterior and coronal slopes, and decreased concavity of the tibial plateau are associated with inferior clinical, patient-reported, and osteoarthritis-related outcomes 7 years after ACL reconstruction. Read More

Am J Sports Med 2019 Feb 14;47(2):312-317. Epub 2019 Jan 14.

The Steadman Clinic, Vail, Colorado, USA.

Background:: Recent biomechanical studies have identified sagittal plane posterior tibial slope as a potential risk factor for posterior cruciate ligament (PCL) injury because of its effects on the kinematics of the native and surgically treated knee. However, the literature lacks clinical correlation between primary PCL injuries and decreased posterior tibial slope.

Purpose/hypothesis:: The purpose of this study was to retrospectively compare the amount of posterior tibial slope between patients with PCL injuries and age/sex-matched controls with intact PCLs. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Jan 11. Epub 2019 Jan 11.

Clinic of Trauma, Hand and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany.

Purpose: The literature shows no consensus regarding the best method and timing for the treatment of acute knee dislocations. Studies indicate that a one-stage procedure performed in the early stages of injury can lead to superior results. The aim of this study was to evaluate the results after performing early surgical repair with additional suture augmentation (ligament bracing) of all torn ligaments in acute knee dislocations. Read More

J Pediatr Orthop 2019 Jan 8. Epub 2019 Jan 8.

Elite Sports Medicine, Connecticut Children's Medical Center.

Background: Prior research has shown decreased accuracy of meniscal injury detection using magnetic resonance imaging (MRI) for anterior cruciate ligament (ACL)-deficient adult patients as well as ACL-deficient pediatric and adolescent patients. The objectives of this study were the following: (1) assess the diagnostic ability of MRI in detecting meniscal injuries for pediatric and adolescent patients undergoing arthroscopic ACL reconstruction and (2) characterize the unrecognized meniscal injuries.

Methods: The sensitivity, specificity, positive predictive value, and negative predictive value of meniscal tears (medial, lateral, or both) on MRI were calculated for the 107 patients in this cohort. Read More

Orthop J Sports Med 2018 Dec 28;6(12):2325967118817297. Epub 2018 Dec 28.

Department of Orthopaedic Surgery, Akershus University Hospital, Lørenskog, Norway.

Background: The outcomes after posterior cruciate ligament reconstruction (PCLR) have been shown to be inferior to those of anterior cruciate ligament reconstruction. There is a lack of knowledge regarding prognostic factors of PCLR outcomes.

Purpose: To explore the effect of injury mechanism and concomitant ligament injuries on patient-reported outcomes at 2-year follow-up after PCLR. Read More

Z Orthop Unfall 2019 Jan 7. Epub 2019 Jan 7.

Abteilung und Poliklinik für Sportorthopädie, Klinikum rechts der Isar der Technischen Universität München.

Reasons for failure of anterior cruciate ligament (ACL) reconstructions are manifold and require a multifactorial explanatory approach. In addition to technical failures, many modifiable and non-modifiable risk factors for a new ACL injury have to be considered. Technical failures primarily include non-anatomical tibial and femoral tunnel position. Read More

Radiography (Lond) 2019 Feb 16;25(1):33-38. Epub 2018 Aug 16.

Kafkas University, Faculty of Medicine, Department of Radiology, Kars, Turkey. Electronic address:

Introduction: The posterior tibial slope (PTS) is believed to be a risk factor for anterior cruciate ligament (ACL) injury. The aim of this study was to reveal the differences in terms of PTS measurements on lateral knee radiographs between ruptured and non-injured cases as well as between males and females in regard to ACL alignment.

Methods: The study cohort included 92 patients (61 males and 31 females) with ACL rupture and 101 individuals (59 males and 42 females) who visited the Orthopedics Department but had no ACL injury. Read More

J Knee Surg 2018 Dec 21. Epub 2018 Dec 21.

Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, Missouri.

Increased tibial slope may be associated with anterior cruciate ligament (ACL) injuries, although potential confounding effects from various patient characteristics and radiographic quantification methods have not been rigorously studied. The association of the slope of the lateral plateau with recurrent ACL injury after primary ACL reconstruction has recently been reported, but the role of medial slope is less well defined. The purpose of this study was to (1) assess medial tibial slope measurement reliability among examiners, (2) compare medial tibial slope values between patients undergoing primary ACL reconstruction, reinjured patients undergoing revision ACL reconstruction, and a control cohort with an intact ACL, (3) analyze if the medial tibial slope is an independent risk factor for noncontact ACL injury, and (4) assess how different anatomical references affect medial tibial slope values. Read More

Oper Orthop Traumatol 2019 Feb 18;31(1):3-11. Epub 2018 Dec 18.

Abteilung für Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.

Objective: Anatomical reduction of bony avulsions of the posterior cruciate ligament (PCL) by a suture-bridge™ (Arthrex, Naples, FL, USA) technique to restore posterior knee stability.

Indications: Acute bony tibial avulsions of the PCL and multifragmentary fractures.

Contraindications: Chronic condition of avulsion fractures or posterior instability, advanced knee osteoarthritis, high-grade soft tissue injury, infection. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Dec 17. Epub 2018 Dec 17.

Department of Orthopaedics, University of North Carolina at Chapel Hill, 102 Mason Farm Rd # 2, Chapel Hill, NC, 27599, USA.

Purpose: Quadriceps weakness following anterior cruciate ligament reconstruction (ACLR) is linked to decreased patient-reported function, altered lower extremity biomechanics and tibiofemoral joint space narrowing. It remains unknown if quadriceps weakness is associated with early deleterious changes to femoral cartilage composition that are suggestive of posttraumatic osteoarthritis development. The purpose of the cross-sectional study was to determine if quadriceps strength was associated with T1ρ relaxation times, a marker of proteoglycan density, of the articular cartilage in the medial and lateral femoral condyles 6 months following ACLR. Read More

Orthop J Sports Med 2018 Dec 12;6(12):2325967118813083. Epub 2018 Dec 12.

Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York, USA.

Background: Prior to the annual National Football League (NFL) Draft, the top college football prospects are evaluated by medical personnel from each team at the NFL Scouting Combine. On the basis of these evaluations, each athlete is assigned an orthopaedic grade from the medical staff of each club, which aims to predict the impact of an athlete's injury history on his ability to participate in the NFL.

Purpose: (1) To identify clinical predictors of signs, symptoms, and subsequent professional participation associated with football-related injuries identified at the NFL Combine and (2) to assess the methodological quality of the evidence currently published. Read More

Med Eng Phys 2019 Feb 14;64:80-85. Epub 2018 Dec 14.

Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley, SA, Australia. Electronic address:

Personalised information of knee mechanics is increasingly used for guiding knee reconstruction surgery. We explored use of uniaxial knee laxity tests mimicking Lachman and Pivot-shift tests for quantifying 3D knee compliance in healthy and injured knees. Two healthy knee specimens (males, 60 and 88 years of age) were tested. Read More

Asia Pac J Sports Med Arthrosc Rehabil Technol 2019 Jan 22;15:13-16. Epub 2018 Nov 22.

Department of Sports Medicine, Kameda Medical Center, Chiba, Japan.

Multiple ligament injury is associated with high instability; hence, it is necessary to restore stability through application of a reliable treatment strategy. We report our experiences in handling a case of ruptured anterior cruciate ligament (ACL) complicated by chronic bony avulsion of the posterior cruciate ligament (PCL). Favourable results were obtained as a result of ACR reconstruction following a new method for tensioning of the chronic tibial bony avulsion of PCL as a postero-medial bundle and augmentation by PCL anterolateral bundle reconstruction. Read More

MMW Fortschr Med 2018 Dec;160(21-22):69-71

Abteilung für Sportorthopädie, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, D-81675, München, Deutschland.

Clin Biomech (Bristol, Avon) 2019 Jan 24;61:84-94. Epub 2018 Nov 24.

Mayo Clinic Biomechanics Laboratories, Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA; Sports Medicine Center, Mayo Clinic, Rochester, MN, USA; Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine & Rehabilitation, Mayo Clinic, Rochester, MN, USA.

Background: The aim of the present study was to evaluate the relationship between tibial slope angle and ligament strain during in vitro landing simulations that induce ACL failure through the application of variable external loading at the knee. The hypothesis tested was that steeper posterior tibial slope angle would be associated with higher ACL strain during a simulated landing task across all external loading conditions.

Methods: Kinetics previously derived from an in vivo cohort performing drop landings were reproduced on 45 cadaveric knees via the mechanical impact simulator. Read More

Orthop J Sports Med 2018 Nov 26;6(11):2325967118810775. Epub 2018 Nov 26.

Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.

Background: The risk for knee osteoarthritis (OA) is substantially increased after anterior cruciate ligament (ACL) injury. Tools are needed to identify characteristics of patients after ACL injury who are most at risk for posttraumatic OA.

Purpose: To determine whether clinical measures of knee function after ACL injury are associated with the development of radiographic knee OA 5 years after injury. Read More

J Ultrasound Med 2018 Nov 27. Epub 2018 Nov 27.

Departments of Orthopedics, Emory University, Atlanta, Georgia, USA.

Objectives: Ultrasound (US) is increasingly being used as an extension of the physical examination on the sidelines, in training rooms, and in clinics. Anterior cruciate ligament (ACL) injury in sport is common, but the literature on US findings after acute ACL rupture is limited. Three indirect US findings of ACL rupture have been described, and this study assessed the validity of these indirect signs. Read More

Orthop J Sports Med 2018 Nov 8;6(11):2325967118803888. Epub 2018 Nov 8.

Department of Orthopaedic Surgery, University of Texas Southwestern, Dallas, Texas, USA.

Background: Despite the increasing incidence of sports-related knee injuries in youth athletes, few studies have reported on the diagnosis and treatment of pediatric and adolescent meniscal root injuries.

Purpose: To describe traumatic posterior meniscal root injuries in a pediatric and adolescent population and compare the presentation of meniscal root injuries versus that of nonroot injuries.

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

Oper Orthop Traumatol 2019 Feb 26;31(1):12-19. Epub 2018 Nov 26.

Abteilung für Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.

Objective: The aim of arthroscopic bracing of the posterior cruciate ligament (PCL) is to restore anatomic and biomechanic function in acute PCL tears. Therefore, primary augmentation of the PCL by using a stable suturing system is used.

Indications: Acute tears of the PCL, femoral avulsions, isolated or combined in cases of multiligament injuries (knee dislocations of Schenk types II-IV). Read More

Knee Surg Sports Traumatol Arthrosc 2018 Nov 24. Epub 2018 Nov 24.

Clinica Ortopedica e Traumatologica II, Istituto Ortopedico Rizzoli, Via Pupilli 1, Bologna, BO, Italy.

Purpose: To assess the relationship between the KiRA triaxial accelerometer and the KT-1000 measurements in the intact, anterior cruciate ligament (ACL) deficient, and ACL reconstructed knee joint for the quantification of the Lachman test. Moreover, the intra- and inter-examiner repeatability of the KiRA device will be determined. It was hypothesized that the side-to-side difference of the anterior tibial translation as measured by the KiRA device would be equivalent to the one measured by the KT-1000 during the Lachman test. Read More

Am J Sports Med 2019 Jan 19;47(1):59-65. Epub 2018 Nov 19.

Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

Background:: The effect of lateral meniscal posterior root tear and repair-commonly seen in clinical practice in the setting of anterior cruciate ligament (ACL) reconstruction-is not known.

Purpose/hypothesis:: This study evaluated the effect of tear and repair of the lateral meniscal posterior root on the biomechanics of the ACL-reconstructed knee. It was hypothesized that anterior tibial translation would increase under anterior loading and simulated pivot-shift loading with the root tear of the posterior lateral meniscus, while repair of the root tear would reduce it close to the noninjured state. Read More

Injury 2018 Nov 12. Epub 2018 Nov 12.

Department of Orthopedic Surgery, Busan Medical Center, Busan, Republic of Korea.

Surgical treatment of the posterior cruciate ligament (PCL) tibial avulsion fracture is challenging due to the deep-seated location of the lesion with complex adjacent anatomy and usually with small-sized bone fragment. We introduce a novel arthroscopic reduction technique using two cross-linked pull-out sutures (2XLPOS) through triple bone tunnels in posterior cruciate ligament (PCL) tibial avulsion fracture. Posterior trans-septal portal was established following the four standard arthroscopic portals. Read More

Med Sci Sports Exerc 2018 Nov 15. Epub 2018 Nov 15.

Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC.

Purpose: Aberrant walking biomechanics following anterior cruciate ligament reconstruction (ACLR) are hypothesized to associate with deleterious changes in knee cartilage. T1ρ magnetic resonance imaging (MRI) is sensitive to decreased proteoglycan density of cartilage. Our purpose was to determine associations between T1ρ MRI inter-limb ratios (ILR) and walking biomechanics 6-months post-ACLR. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Nov 14. Epub 2018 Nov 14.

Orthopedic Department, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.

Purpose: To evaluate the progressive changes in the morphology of traumatic ruptures of the anterior cruciate ligament (ACL) over time. A secondary objective was evaluating their correlation with meniscal tears or chondral lesions.

Methods: The study included one hundred and one patients who underwent ACL reconstruction surgery of the knee after a definite date of injury. Read More

Knee 2019 Jan 8;26(1):40-51. Epub 2018 Nov 8.

Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Belgium. Electronic address:

Background: There is limited evidence on neuromuscular risk factors for anterior cruciate ligament (ACL) injuries, with most work mainly focusing on hamstrings and quadriceps muscle strength. This prospective pilot study explored if neuromuscular activation patterns of the quadriceps and hamstrings during a drop vertical jump influence ACL injury risk.

Methods: Forty-six female athletes performed a drop vertical jump at baseline. Read More

Sports Med Arthrosc Rev 2018 Dec;26(4):150-152

GHS Orthopaedics and Sports Medicine, Danville, PA.

The purpose of this paper is to present an overview of the progress in treatment of knee dislocations and posterior cruciate ligament (PCL)-based multiple ligament knee injuries over the past 25 years. The perspectives of where we were 25 years ago, where we are today, and where we will be in the future will be explored. Read More

Phys Ther Sport 2018 Nov 24;34:227-237. Epub 2018 Oct 24.

Faculty of Sport, Health and Applied Sciences, St Mary's University, Waldegrave Road, Twickenham, TW1 4SX, UK. Electronic address:

Objective: Strength training acute programme variables (APVs) can impact tibiofemoral joint injury outcomes. Exercise descriptors (EDs; e.g. Read More

Am J Sports Med 2018 Dec 2;46(14):3391-3399. Epub 2018 Nov 2.

Fowler Kennedy Sports Medicine Clinic/Department of Surgery, Western University, London, Ontario, Canada.

Background:: Previous research demonstrated that the attachment of the anterolateral ligament (ALL) to the lateral meniscus is stiffer and stronger in its tibial attachment than its femoral attachment. How this relates to anterolateral knee stability and lateral meniscal function is unknown.

Hypothesis/purpose:: The hypothesis was that the ALL acts as a peripheral anchor to the lateral meniscus, aiding in anterolateral rotatory stability, and that the inframeniscal fibers of the ALL will provide greater anterolateral rotatory stability because of their greater tensile properties. Read More

Orthop J Sports Med 2018 Oct 26;6(10):2325967118804478. Epub 2018 Oct 26.

School of Allied Health, La Trobe University, Melbourne, Australia.

Background: Although isolated posterior cruciate ligament reconstruction (PCLR) has become a more frequently performed procedure, reports of functional outcomes and return-to-sport (RTS) rates to support its use are still limited.

Purpose: To systematically review the literature to determine the rates of RTS and the functional outcomes of patients after isolated PCLR.

Study Design: Systematic review: Level of evidence, 4. Read More

Connect Tissue Res 2018 Oct 29:1-12. Epub 2018 Oct 29.

a "111" project Laboratory of Biomechanics and Tissue Repair, Bioengineering College , Chongqing University , Chongqing , China.

Purposes: To investigate the ability of synoviocytes (SCs) in regulating MMPs expression in the posterior cruciate ligament fibroblasts (PCLfs) after TNF-α treatment, to test whether a specific inflammation inhibitor Bay11-7082 can antagonize the expression of MMPs in PCLfs after injury.

Methods: The microenvironment of knee joint cavity after PCL injury was mimicked in an in vitro co-culture system. The effects of TNF-α treatment on the expression of MMPs in PCL fibroblasts (PCLfs) were studied. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Oct 25. Epub 2018 Oct 25.

Department of Orthopedic Surgery, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea.

Purpose: This study aimed to evaluate whether supine lateral radiographs (SLRs) could replace stress radiographs for diagnosing chronic posterior cruciate ligament (PCL) injuries and identifying combined PCL injuries (defined as PCL injury with medial collateral ligament or posterolateral ligament complex injury).

Methods: In this retrospective study, both SLRs at 30° and 90° of knee flexion (30/90 SLRs) and Telos stress radiographs of patients with chronic PCL injuries (n = 38) and only 30/90 SLRs of healthy controls (n = 84) were taken. Injured-to-normal differences on 30/90 SLRs and stress radiographs were assessed. Read More

J Orthop Surg Res 2018 Oct 22;13(1):265. Epub 2018 Oct 22.

Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Xi Road, Wenzhou, 325000, People's Republic of China.

Background: The standard treatment of the posterior cruciate ligament (PCL) rupture accompanied with the posterior root of medial meniscus (PRMM) tears is controversial. Our research describes a minimally invasive technique for the PCL rupture accompanied with the PRMM tears.

Methods: We described a "U" shape suture and shared tunneling technique to treat the PCL rupture accompanied with PRMM tears. Read More

Orthop J Sports Med 2018 Oct 11;6(10):2325967118799970. Epub 2018 Oct 11.

Centre Orthopédique Santy, Lyon, France.

Background: The structure and function of the anterolateral aspect of the knee have been significantly debated, with renewed interest in this topic since the description of the anterolateral ligament (ALL).

Purpose: To define and describe the distinct structures of the lateral knee and to correlate the macroscopic and histologic anatomic features.

Study Design: Descriptive laboratory study. Read More

J Biomech 2018 Nov 29;81:93-103. Epub 2018 Sep 29.

Department of Life Sciences, Roehampton University, UK.

Whilst anterior cruciate ligament injury commonly occurs during change of direction (CoD) tasks, there is little research on how athletes execute CoD after anterior cruciate ligament reconstruction (ACLR). The aims of this study were to determine between-limb and between-test differences in performance (time) and joint kinematics and kinetics during planned and unplanned CoD. One hundred and fifty-six male subjects carried out 90° maximal effort, planned and unplanned CoD tests in a 3D motion capture laboratory 9 months after ACLR. Read More

Res Sports Med 2018 Oct 14:1-12. Epub 2018 Oct 14.

a Department of Exercise and Sport Science , University of North Carolina , Chapel Hill , NC , USA.

Research on knee internal derangement (KID) injuries in high school girls' lacrosse is limited, yet needed to identify sport-specific risk factors. This study describes the epidemiology of KID injuries in United States high school girls' lacrosse during the 2008/09-2016/17 academic years. Athletic trainers (ATs) reported injury and athlete-exposure (AE) data to the High School Reporting Information Online (RIO) surveillance system. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Oct 4. Epub 2018 Oct 4.

Department of Orthopaedic Surgery, Henry Ford Health System, Henry Ford Hospital, 2799 W. Grand Blvd, Detroit, MI, 48202, USA.

Purpose: The purpose of this study was to identify if abnormal tibial alignment was a risk factor for lateral meniscus posterior root tears (LMPRT) in patients with acute anterior cruciate ligament (ACL) ruptures.

Methods: The medical charts of 200 patients treated for ACL ruptures between 2013 and 2016 were retrospectively reviewed and evaluated. MRI images and reports were assessed for concurrent meniscal tears. Read More

Arthroscopy 2018 Oct;34(10):2855-2856

How long should a trial of conservative treatment of posterior cruciate ligament injuries continue before surgical intervention? A recent study demonstrates that time from injury to surgery could be negatively correlated with graft maturation and remnant preservation. Considering the improvements in arthroscopic posterior cruciate ligament reconstruction outcomes, early intervention could be considered in high functional demand patients with high grades of instability. Yet it remains to be seen whether graft maturation and remnant preservation result in improved clinical outcomes regardless of the time to surgical intervention. Read More

PLoS One 2018 3;13(10):e0205118. Epub 2018 Oct 3.

Department of Orthopaedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.

Background: There is increasing interest in the long-term outcomes of patients with posterior cruciate ligament (PCL) tears following conservative treatment or reconstruction. However, limited information is available regarding these results because of the relative rarity of cases and lack of long-term follow-up.

Purpose: The goals of this study are to (1) compare the occurrence of secondary meniscal tears, osteoarthritis (OA) or subsequent total knee replacement (TKR) in patients with or without PCL injury, and (2) evaluate the potential protective effect of PCL reconstruction against long-term sequela in patients with PCL deficiency. Read More