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Skeletal Radiol 2020 Jul 29. Epub 2020 Jul 29.

The Russell H. Morgan Department of Radiology & Radiological Science, The Johns Hopkins Medical Institutions, 600 North Wolfe Street, Baltimore, MD, 21287, USA.

Objective: To evaluate the frequency, MRI appearance, and clinical significance of peripheral nerve abnormalities encountered on routine knee MRI.

Materials And Methods: A retrospective review was performed to identify consecutive patients who underwent routine knee MRI from March 2015-2018 and had peripheral nerve abnormalities. MRIs were reviewed for the presence of tibial (TN) and common peroneal nerve (CPN) abnormalities (including hyperintensity, bulbous enlargement, discontinuity, architectural distortion, skeletal muscle denervation). Read More

Am J Sports Med 2020 Aug 6;48(10):2408-2417. Epub 2020 Jul 6.

Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA.

Background: Preoperative grade 3 pivot shift has been reported to be associated with higher rates of anterior cruciate ligament (ACL) failure, persistent instability, and inferior patient-reported outcomes. The etiology of a high-grade pivot shift is multifactorial, and numerous factors have been suggested to be responsible. More attention has recently been focused on injury to the anterolateral structures (ALS) as a risk factor for a grade 3 pivot shift. Read More

Am J Sports Med 2020 Jul 24;48(9):2213-2220. Epub 2020 Jun 24.

OrthoSport Victoria Research Unit, Richmond, Australia.

Background: Recent biomechanical studies have demonstrated that the Kaplan fibers (KFs) of the iliotibial band play a role in the control of anterolateral rotation of the knee. However, controversy exists regarding whether the KFs are injured in conjunction with anterior cruciate ligament (ACL) injury.

Purpose: To establish the prevalence of radiological injury to the KFs in the ACL-injured knee; to evaluate the effect of the time interval between injury and magnetic resonance imaging (MRI) on diagnosis of KF injury; and to assess for any association between KF injury and other qualitative radiological findings. Read More

Injury 2020 Aug 6;51(8):1863-1866. Epub 2020 May 6.

Department of Orthopaedics Surgery, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea. Electronic address:

Purpose: Valgus injury of high energy of the lateral bumper impact can lead blows to the inside of the knee that push the knee outwards or indirect injury where a varus force is applied to the contralateral knee, which injury pattern named as "Windswept injury mechanism" in this study. The objective of this study was to establish injury pattern in the contralateral side knee on the basis of this pattern recognition to enhance a diagnosis of interrelated osseous and soft-tissue injuries.

Methods: Sixteen patients by "Windswept injury mechanism" were identified, who visited a level 1 trauma center between Jan 2007 and Dec 2016. Read More

Open Access J Sports Med 2020 13;11:105-112. Epub 2020 May 13.

Football Research Group, Linköping University, Linköping, Sweden.

Background: There is limited epidemiological information on injury rates and injury mechanisms for lateral collateral ligament (LCL) and posterior cruciate ligament (PCL) injuries in male professional soccer. In addition, time trends and lay-off times for these injuries have not yet been determined.

Aim: To determine injury rates and circumstances of LCL and PCL injuries over 17 seasons in men's professional soccer. Read More

Am J Sports Med 2020 Jul 2;48(9):2287-2294. Epub 2020 Jun 2.

Bellin Health Titletown Sports Medicine and Orthopedics, Green Bay, Wisconsin, USA.

Background: Lower extremity injuries are the most common injuries in professional sports and carry a high burden to players and teams in the National Football League (NFL). Injury prevention strategies can be refined by a foundational understanding of the occurrence and effect of these injuries on NFL players.

Purpose: To determine the incidence of specific lower extremity injuries sustained by NFL players across 4 NFL seasons. Read More

Skeletal Radiol 2020 May 29. Epub 2020 May 29.

Stoke Mandeville Hospital, Buckingahmshire Healthcare NHS Trust, Aylesbury, UK.

Objective: To delineate the spectrum of traumatic knee injuries associated with injury of the anterolateral ligament of the knee (ALL).

Materials And Methods: A retrospective review of 200 MRI scans undertaken for acute knee trauma was performed. In each scan, the ALL was scored as normal, sprained or torn. Read More

Knee Surg Sports Traumatol Arthrosc 2020 May 27. Epub 2020 May 27.

Gelenkchirurgie Orthopädie Hannover, Hannover, Germany.

Purpose: There has been a recent resurgence in interest in posterolateral instabilities of the knee joint. As this terminology comprises a large variety of pathologies, confusion and ambiguity in communication between surgeons and allied health professionals are generated. Consequently, accurate classification criteria are required to account for thorough preoperative diagnostics, surgical decision-making, and a standardized scientific documentation of injury severity. Read More

Am J Sports Med 2020 Jun 8;48(7):1673-1681. Epub 2020 May 8.

Department of Orthopaedic Surgery, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.

Background: The incidence of meniscocapsular junction tears of the medial meniscus posterior horn, known as , is reported to be 9.3% to 23.9%. Read More

Cureus 2020 Apr 4;12(4):e7532. Epub 2020 Apr 4.

Orthopaedics, Post Graduate Institute of Medical Education and Research, Chandigarh, IND.

We present an unusual and complex case of a 16-year-old adolescent male who injured his right knee and sustained combined avulsion injuries of posterior cruciate ligament (PCL) at the tibial insertion site, iliotibial band at lateral tibial condyle, and lateral collateral ligament (LCL) at femoral insertion site akin to osteoligamentous posterolateral corner injury. Anatomical reduction of the femoral LCL avulsion fragment was performed and fixed with a two 4-mm partially threaded cancellous screw. Iliotibial band avulsion was buttressed using Ellis t-plate and fixed with two 4-mm partially threaded cancellous screws. Read More

Knee Surg Sports Traumatol Arthrosc 2020 May 5. Epub 2020 May 5.

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

Purpose: This study aimed to compare the biomechanical properties of the popliteus bypass against the Larson technique for the reconstruction of a combined posterolateral corner and posterior cruciate ligament injury.

Methods: In 18 human cadaver knees, the kinematics for 134 N posterior loads, 10 Nm varus loads, and 5 Nm external rotational loads in 0°, 20°, 30°, 60,° and 90° of knee flexion were measured using a robotic and optical tracking system. The (1) posterior cruciate ligament, (2) meniscofibular/-tibial fibers, (3) popliteofibular ligament (PFL), (4) popliteotibial fascicle, (5) popliteus tendon, and (6) lateral collateral ligament were cut, and the measurements were repeated. Read More

Medicine (Baltimore) 2020 May;99(18):e19899

Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital.

Introduction: The anterior cruciate ligament (ACL) is the region where spraining or tearing is most prevalent when the knee is injured. Complete ACL ruptures have a much less favorable outcome without surgical intervention. Polydeoxyribonucleotide (PDRN) is a relatively safe substance widely used for regenerative therapy. Read More

Case Rep Orthop 2020 24;2020:7348201. Epub 2020 Feb 24.

Department of Sports Orthopedic Surgery, Kanto Rosai Hospital, 1-1 Kizukisumiyoshicho, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Japan.

Till date, there are no clear guidelines regarding the treatment of multiple ligament knee injuries. Ligament repair is advantageous as it preserves proprioception and does not involve grafting. Many studies have reported the use of open repair and reconstruction for multiple ligament knee injuries; however, reports on arthroscopic-combined single-stage anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) repairs are scarce. Read More

Zhen Ci Yan Jiu 2020 Jan;45(1):57-61

Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700.

Objective: The present study is to investigate the characteristic distribution of primary pain points and referred pain areas in patients with knee-joint pain diseases, therefore revealing the correlation between the myofascial trigger point and acupoint sensitization.

Methods: A total of 483 patients (320 men and 163 women, 36 to 72 years in age) with knee-joint pain recruited from 4 clinical centers were observed from July, 2017 to April, 2019 in the present study. The areas of primary and referred pain in these patients were detected by thumb-pressing and marked on human anatomic atlas. Read More

Int J Sports Phys Ther 2020 Feb;15(1):139-147

Twin Cities Orthopedics, Edina, MN, USA.

Background And Purpose: Multi-ligament knee injuries (MLKI) can be debilitating and often career ending injuries for athletes. Current literature reports on outcomes following these injuries for return to activities of daily life; however, there is a paucity of evidence evaluating the return to sport following a MLKI. The purpose of this case report is to describe the treatment and outcome following a MLKI and novel meniscus radial repair technique in which the athlete returned to compete in the 2018 Winter Olympic Games 14 months postoperatively. Read More

Medicine (Baltimore) 2020 Feb;99(8):e19195

Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou,Guangdong Province, People's Republic of China.

Rationale: Less-Invasive Stabilization System (LISS) plate is an internal fixation commonly used for the periprosthetic distal femur fractures. Failure associated with LISS plate has been rarely reported, and the reasons for LISS plate failure are multitudinous. Various advantages have been reported, but failures continue. Read More

Instr Course Lect 2019 ;68:513-544

The management of knee ligament injuries continues to evolve, and much debate persists over the timing of surgery, repair versus reconstruction, surgical technique, postoperative rehabilitation, graft selection, and fixation. Surgeons should be aware of updates on the best management strategies of knee ligament injuries in 2018 and understand the important history and physical examination findings of the knee with ligamentous injury; the anterior cruciate ligament; the role of the anterolateral ligament and lateral extra-articular tenodesis; combined anterior cruciate ligament and medial collateral ligament injuries; the posterior cruciate ligament; medial collateral ligament repair versus reconstruction; posterolateral corner repair versus reconstruction; the role of coronal plane osteotomies, including high tibial osteotomy and distal femoral osteotomy; the role of sagittal plane osteotomies, including anterior closing wedge osteotomy and anterior opening wedge osteotomy; the initial management of the multiligament-injured knee; and five keys to avoiding complications in the multiligament-injured knee. The best available evidence and sample case presentations help guide surgical decision making and improve patient outcomes. Read More

Instr Course Lect 2020 ;69:653-660

This review focuses on the management of anterior cruciate ligament (ACL) reconstruction patients when other concomitant pathology may need to be addressed at the time of surgery. Given the role of the posterior horn of the medial meniscus in preventing osteoarthritis progression and contributing to knee stability, medial meniscus repair should always be considered when performing ACL reconstruction. Meniscal transplant may also be appropriate in select patients with normal knee alignment and absent of cartilage abnormalities in the compartment. Read More

Orthop Traumatol Surg Res 2020 May 23;106(3):465-468. Epub 2020 Jan 23.

Université Paris Saclay, AP-HP, 92100 Boulogne-Billancourt, France.

Introduction: In anterior cruciate ligament (ACL) tear, passive spontaneous anterior tibial subluxation (ATS), with respect to the femur, is sometimes observed on MRI. In a case-control study, ATS>3.5mm showed 100% specificity (±3. Read More

Trauma Case Rep 2020 Feb 15;25:100279. Epub 2020 Jan 15.

Theresienkrankenhaus Mannheim, Dept. Unfallchirurgie und Sporttraumatologie, Bassermannstraße 1, 68165 Mannheim, Germany.

The optimum therapy of a torn PCL in multiligamental-injured knees is controversially discussed in literature. As conservative treatment and PCL reconstruction alone mostly lead to long-term immobilization, we performed a single stage PCL bracing with ACL reconstruction using ACL TightRopes® and Fiber-/TigerTapes® to accelerate back-to-sport after multiligamental knee injury with bicrucial tears. The brace consisted of two FiberTapes which were looped in an ACL TightRope and transosseously fixed with a Dog Bone-Button®. Read More

J Pediatr Orthop 2020 Feb;40(2):71-77

Boston Childrens Hospital, Harvard Medical School, Boston, MA.

Background: The majority of research on medial (MCL) and lateral (LCL) collateral ligament injuries has focused on adults and combined collateral/cruciate injuries. The purpose of this study was to determine characteristics associated with isolated collateral ligament injuries in adolescents, and assess timing for return to sports.

Methods: Electronic medical records were queried to identify patients aged below 17 years who sustained a magnetic resonance imaging-confirmed isolated MCL or LCL injury over an 8-year period. Read More

Orthop J Sports Med 2019 Dec 18;7(12):2325967119887920. Epub 2019 Dec 18.

Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy.

Background: The anterolateral ligament (ALL) has been identified as a structure on the lateral side of the knee, but debate exists regarding whether it is a capsular thickening or a ligament.

Hypothesis: A detailed ultrastructural characterization of the ALL and its ultrastructure collagen arrangement will reveal it more closely resembles ligamentous tissue than joint capsule.

Study Design: Descriptive laboratory study. Read More

Curr Rev Musculoskelet Med 2020 Feb;13(1):123-132

Twin Cities Orthopedics, Edina, MN, USA.

Purpose Of Review: The importance of the posterolateral corner (PLC) with respect to knee stability, particularly in the setting of anterior cruciate ligament (ACL) deficiency, has become more apparent in recent years. The purposes of this article are to review the current concepts of PLC injuries and to address their role in the ACL-deficient and ACL-reconstructed knee.

Recent Findings: Recent literature demonstrates that a single staged, combined reconstruction is optimal. Read More

Skeletal Radiol 2020 May 9;49(5):747-756. Epub 2019 Dec 9.

Radiology and Imaging Sciences, CC-NIH, 10 Center Drive, Bethesda, MD, 20892, USA.

Objective: To analyze the MRI characteristics of distal superficial medial collateral ligament (sMCL) tears and to identify features of tears displaced superficial to the pes anserinus (Stener-like lesion (SLL)).

Materials And Methods: Knee MRI examinations at four institutions were selected which showed tears of the sMCL located distal to the joint line. MRIs were evaluated for a SLL, a wavy contour to the sMCL, and the location of the proximal sMCL stump. Read More

J Am Acad Orthop Surg 2020 05;28(9):e386

Wigan, England.

Arthroscopy 2019 10;35(10):2918-2927

Departamento de Cirurgia da Universidade Federal do Ceará, Fortaleza, Brasil.

Purpose: To describe the morphology and distribution of the anterolateral ligament of the knee (ALL) nerve endings, aiming to understand the interaction between the proprioceptive system and knee mechanics.

Methods: Twenty ALLs were obtained from fresh frozen cadavers. The ligaments were measured, weighed, and cut. Read More

J Orthop Case Rep 2019 ;9(3):90-92

Department of Clinical Research Development Center, Firoozgar Hospital, Iran University of Medical Science, Tehran, Iran.

Introduction: Reverse Segond fracture is a cortical avulsion fracture off the medial tibial plateau of the knee, associated with tears of the posterior cruciate ligament (PCL), medial collateral ligament (MCL), medial meniscus, and probably the anterior cruciate ligament (ACL). Unlike Segond fracture, it is a very rare injury of the knee.

Case Report: Case one is a 24-year-old male with left tibial plateau and reverse Segond fracture with an magnetic resonance imaging (MRI) showing MCL avulsion, medial meniscus entrapped in fracture site and ACL tear but intact PCL. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019 Sep;33(9):1083-1087

Department of Sports Medicine, Zhengzhou Orthopedics Hospital, Zhengzhou Henan, 450052,

Objective: To evaluate the effectiveness of arthroscopic anterior cruciate ligament (ACL) reconstruction via tibial tunnel made by three-portal technique.

Methods: Between July 2015 and December 2016, 45 patients with ACL ruptures were treated. There were 29 males and 16 females with an average age of 27. Read More

Am J Sports Med 2019 10 27;47(12):2952-2959. Epub 2019 Aug 27.

Department of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, USA.

Background: In cases of acute combined posteromedial and anterior cruciate ligament (ACL) injuries, primary repair of the superficial medial collateral ligament (sMCL) and posterior oblique ligament (POL) with suture tape augmentation may be a reasonable alternative to standard tendon reconstruction techniques.

Purpose/hypothesis: The purpose was to examine the rotational and valgus laxity with ACL strain following sMCL and POL repair with suture tape augmentation at various degrees of knee flexion. It was hypothesized that this technique would restore knee laxity and kinematics comparable with those of the intact state. Read More

J Orthop Surg Res 2019 Aug 23;14(1):268. Epub 2019 Aug 23.

Department of Orthopaedics, Peking University Third Hospital, No. 49 North Garden Road, Beijing, 100191, China.

Background: With the use of constrained condylar knee (CCK) prostheses, dislocation of the knee following total knee arthroplasty (TKA) with valgus deformity is rare. In our practice with such patients, however, an abnormally high dislocation rate was noted. It appeared to be associated with the extent of soft-tissue release which varied among surgeons following different sequences of release. Read More

Animals (Basel) 2019 Jul 31;9(8). Epub 2019 Jul 31.

Department for Companion Animals and Horses, University Equine Hospital, Vetmeduni Vienna, 1210 Vienna, Austria.

We developed a finite element model (FEM) of the equine stifle joint to identify pressure peaks and simulate translocation and deformation of the menisci. A series of sectional magnetic resonance images (1.5 T) of the stifle joint of a 23 year old Shetland pony gelding served as basis for image segmentation. Read More

PLoS One 2019 1;14(8):e0219586. Epub 2019 Aug 1.

Department of Orthopaedic Surgery, Hanyang University Seoul Hospital, Seongdong-gu, Seoul, Korea.

Non-contact anterior cruciate ligament (ACL) rupture is mostly caused by a pivot shift mechanism including valgus collapse and internal tibial rotation. In female athletes, the incidence of ACL rupture has been reported to be significantly higher than in their male counterparts. However, to date, there have been limited reports and controversy regarding sex differences underlying injury mechanisms of ACL and severity of injury. Read More

Rev Bras Ortop (Sao Paulo) 2019 Feb 1;54(1):104-108. Epub 2019 Mar 1.

Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil.

Varus stress radiographs are reported as an effective and cost-beneficial diagnostic and decision-making tool for lateral knee injuries, both in the acute and chronic settings. The opening of the lateral compartment is reported to vary according to the number of structures injured, helping to differentiate isolated fibular collateral ligament injury from grade-III posterolateral corner injury. The conventional technique requires the physician or another healthcare provider to apply manual varus stress while obtaining the radiograph on one knee at a time. Read More

BMC Musculoskelet Disord 2019 Jul 27;20(1):343. Epub 2019 Jul 27.

Department of Orthopedic Sports Medicine, University Hospital Rechts der Isar, Technical University Munich, Ismaninger Str. 22, 81675, Munich, Germany.

Background: Surgical treatment of radial head fractures is increasingly performed arthroscopically. These fractures often feature concomitant injuries to the elbow joint, which may be under-diagnosed in the radiological examinations. Little is known about the diagnostic value of arthroscopy, the treatment options that arise from arthroscopically assisted fracture fixation and clinical results. Read More

Arthroscopy 2019 07;35(7):2136-2142

University of Miami, Florida, U.S.A.

Purpose: To evaluate the frequency of anterolateral ligament (ALL) injuries in acute anterior cruciate ligament (ACL) injuries in adolescent patients using magnetic resonance imaging (MRI) and characterize other potential intra- and extra-articular knee injuries that are associated with ALL injuries.

Methods: Patients between 14 and 17 years of age with acute ACL injuries (trauma for <3 weeks before examination) were retrospectively evaluated with MRI over 24 months (January 2016-December 2017). Among this population, ALL was classified as not visible, normal, or injured. Read More

FP Essent 2019 Jul;482:23-26

Uniformed Services University Department of Family Medicine, 4301 Jones Bridge Road A1038, Bethesda, MD 20814-4799.

Family physicians commonly treat athletes with simple fractures and other musculoskeletal injuries that require temporary immobilization. Certain fractures (eg, intraarticular, multiple, open, associated with dislocations or tendon injury) typically are managed by orthopedic subspecialists. During the healing process, a custom-molded or prefabricated orthopedic support, known as an orthosis, may be used to support the injured area and prevent reinjury. Read More

Am J Sports Med 2019 07 24;47(9):2102-2109. Epub 2019 Jun 24.

OrthoSport Victoria, Epworth Healthcare, Melbourne, Australia.

Background: Most lateral extra-articular tenodesis (LET) procedures rely on passing a strip of the iliotibial band (ITB) under the fibular (lateral) collateral ligament and fixing it proximally to the femur. The Ellison procedure is a distally fixed lateral extra-articular augmentation procedure with no proximal fixation of the ITB. It has the potential advantages of maintaining a dynamic element of control of knee rotation and avoiding the possibility of overconstraint. Read More

Open Access Maced J Med Sci 2019 May 15;7(9):1486-1493. Epub 2019 May 15.

National Ribat University, Khartoum, Sudan.

Background: Multi-ligament knee injury is the state of having two or more of the major knee ligaments, namely: the anterior cruciate ligament (ACL), the posterior cruciate ligament (PCL), the medial collateral ligament (MCL), the lateral collateral ligament (LCL), the posteromedial corner (PMC), and the posterolateral corner (PLC). The knee is a hinge joint; this dictates two direction movements on the y-axis plane. The knee joints carry the weight load of the body uniquely. Read More

Clin Orthop Relat Res 2019 Oct;477(10):2228-2239

K. Chung, S.-J. Kim, C. H. Choi, S.-H. Kim, M. Jung, The Arthroscopy and Joint Research Institute, the Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea Y. Choi, The Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea.

Background: In ACL reconstruction, the relationship of the femoral tunnel outlet to the anatomy of the lateral knee is clinically important, but whether that relationship is influenced by knee flexion using a transportal technique is unclear.

Questions/purposes: The purposes of this study were to (1) to describe the relationship between the outlet of the femoral tunnel and the lateral anatomic structures of the femur, including the lateral epicondyle, lateral collateral ligament, popliteus tendon, and lateral head of the gastrocnemius, as a function of knee flexion angle when the tunnel was created; and (2) to determine the knee flexion range of angles that best limits the risk of damage to these structures as the femoral tunnel is created during anatomic single-bundle ACL reconstruction using the transportal technique.

Methods: Between January 2017 and June 2018, 113 patients underwent ACL reconstruction, of which 62 (55%) who had a primary single-bundle ACL reconstruction with transportal technique using autogenous quadruple hamstring graft were included. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Oct 7;27(10):3284-3290. Epub 2019 May 7.

Department of Orthopaedic Surgery, Samsung Medical Centre, SungKyunKwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea.

Purpose: Although reconstruction of the lateral ulnar collateral ligament (LUCL) has been considered the procedure of choice for posterolateral rotatory instability (PLRI), recent studies have reported that the entire lateral collateral ligament complex (LCLC), rather than its posterior part only, contributes to preventing PLRI. Thus, it was hypothesized that dual reconstruction of the radial collateral ligament (RCL) and LUCL for the treatment of elbow PLRI could provide favourable clinical results regardless of the mechanism of injury.

Methods: This retrospective study reviewed the clinical results of 21 patients who underwent dual reconstruction of the RCL and LUCL between 2011 and 2016. Read More

Eur J Radiol 2019 Jul 22;116:225-230. Epub 2019 Mar 22.

Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21 Namdong-daero, 774beon-gil, Namdong-gu, Incheon 21565, Republic of Korea.

Objective: The purpose of this article is to assess whether dual-energy CT (DECT) collagen material decomposition technique could reliably depict graft integrity in patients with knee ligament reconstruction.

Methods: Seventy patients (mean age, 29.8 years; age range, 15-57 years; 61 men, 9 women) who underwent knee DECT, from June 2016 to January 2018, after knee ligament reconstruction were included in our study. Read More

Am J Sports Med 2019 05 17;47(6):1294-1301. Epub 2019 Apr 17.

School of Medicine, Georgetown University, Washington, DC, USA.

Background: The use of artificial turf in American football continues to grow in popularity, and the effect of these playing surfaces on athletic injuries remains controversial. Knee injuries account for a significant portion of injuries in the National Collegiate Athletic Association (NCAA) football league; however, the effect of artificial surfaces on knee injuries remains ill-defined.

Hypothesis: There is no difference in the rate or mechanism of knee ligament and meniscal injuries during NCAA football events on natural grass and artificial turf playing surfaces. Read More

Knee Surg Relat Res 2019 Jun;31(2):137-142

Knee & Shoulder Clinic, New Delhi, India.

Anterior cruciate ligament (ACL) femoral avulsions are a rare entity mainly seen in children. We describe a unique case of a bony ACL avulsion with a medial collateral ligament (MCL) and lateral meniscus (LM) tear in a 37-year-old patient who sustained a two-wheeler accident. The ACL femoral avulsion was fixed arthroscopically using a Knee Scorpion and a FiberTape fixed over a suture disc on the lateral cortex. Read More

Oper Orthop Traumatol 2019 Apr 18;31(2):127-142. Epub 2019 Mar 18.

Klinik und Poliklinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland.

Objective: Complete visualization of the articular surface in comminuted uni- or bicondylar tibial plateau fractures as a prerequisite for anatomical reconstruction to reduce the risk of posttraumatic osteoarthritis.

Indications: Unicondylar lateral or medial as well as bicondylar intra-articular tibial plateau fractures with central and/or dorsal fracture lines; comminuted destruction of the medial or lateral tibial plateau with dislocation of >2 mm.

Contraindications: Critical soft tissue in the approach area, femoral condylar fracture, intraligamentous ruptures of the medial or lateral ligaments or the posterolateral corner. Read More

Knee Surg Sports Traumatol Arthrosc 2020 Jan 4;28(1):63-69. Epub 2019 Mar 4.

Human Anatomy and Embryology Unit, Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona, Spain.

Purpose: Neurovascular structures around the ankle are at risk of injury during arthroscopic all-inside lateral collateral ligament repair for the treatment of chronic ankle instability. This study aimed to evaluate the risk of damage to anatomical structures and reproducibility of the technique amongst surgeons with different levels of expertise in the arthroscopic all-inside ligament repair.

Methods: Twelve fresh-frozen ankle specimens were used for the study. Read More

J Orthop Sports Phys Ther 2019 Mar;49(3):210

A 25-year-old male college student reported an immediate sharp pain in the lateral aspect of his left knee while playing recreational basketball. He sought a direct-access consultation by a physical therapist. Due to the superficial nature of the fibular (lateral) collateral ligament (FCL), static and dynamic ultrasound imaging was used to visualize the FCL. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Oct 14;27(10):3269-3275. Epub 2019 Feb 14.

Sporthopaedicum, Straubing and Regensburg, Bahnhofplatz, 27, 94315, Straubing, Germany.

Purpose: Most elbow dislocations can be treated conservatively, with surgery indicated in special circumstances. Surgical options, apart from fracture fixation, range from repair or reconstruction of the damaged ligaments to static external fixation, usually entailing either a long period of immobilization followed by carefully monitored initiation of movement or dynamic external fixation. In general, no consensus regarding surgical treatment has been reached. Read More

Orthop J Sports Med 2019 Jan 24;7(1):2325967118822450. Epub 2019 Jan 24.

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

Background: Combined partial lateral collateral and complete anterolateral ligament (PLCCALL) injuries are a specific injury pattern seen in Brazilian jiu-jitsu (BJJ) because of the knee varus-flexion mechanism that frequently occurs during grappling.

Purpose/hypothesis: The purpose of this study was to evaluate the incidence of this injury pattern in a series of BJJ athletes with an acute knee injury and to evaluate clinical and functional outcomes after nonoperative management at a minimum follow-up of 1 year. Our hypotheses were that PLCCALL injuries are common in BJJ and that nonoperative treatment is associated with excellent clinical outcomes and return to the preinjury level of sport. 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