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Biomed Res Int 2020 21;2020:8282460. Epub 2020 May 21.

Department of Pediatric Orthopedic Surgery, Emergency Hospital for Children "Grigore Alexandrescu", Bucharest, Romania.

Objectives: Meniscus repair is a challenge for a practitioner, as an injured meniscus can lead to osteoarthritic joint changes with a greatly disabling outcome. Platelet-rich plasma has been regarded as a promising therapy to help induce healing. The purpose of the study is to clinically assess the effectiveness of PRP treatment in adolescents with meniscal lesions. Read More

Eur Radiol 2020 Jun 22. Epub 2020 Jun 22.

Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, Lobby 6, Suite 350, San Francisco, CA, 94107, USA.

Objectives: To study the natural history of new horizontal meniscal tears and their association with progression of cartilage degeneration in individuals at risk for or with mild to moderate knee osteoarthritis over 4 years.

Methods: Individuals who developed a new meniscal tear in the right knee over 2 years were selected from the Osteoarthritis Initiative 3T MRI studies. Knee structural changes were analyzed at the time of tear appearance (baseline), and after 4 years using a modified Whole-Organ Magnetic Resonance Imaging Score (WORMS). Read More

Cartilage 2020 Jun 21:1947603520934525. Epub 2020 Jun 21.

Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.

Objective: To identify joint structural risk factors, measured using quantitative compositional and semiquantitative magnetic resonance imaging (MRI) scoring, associated with the development of accelerated knee osteoarthritis (AKOA) compared with a more normal rate of knee osteoarthritis (OA) development.

Design: From the Osteoarthritis Initiative we selected knees with no radiographic OA (Kellgren-Lawrence grade [KL] 0/1) that developed advanced-stage OA (KL 3/4; AKOA) within a 4-year timeframe and a comparison group with a more normal rate of OA development (KL 0/1 to KL 2 in 4 years). MRIs at the beginning of the 4-year timeframe were assessed for cartilage T2 values and structural abnormalities using a modified Whole-Organ Magnetic Resonance Imaging Score (WORMS). Read More

Knee 2020 Jun 30;27(3):676-682. Epub 2020 Apr 30.

Acibadem University Faculty of Medicine, Department of Orthopedic Surgery, Acibadem Altunizade Hospital, Turkey. Electronic address:

Background: The aim of this study was to evaluate the clinical and radiological outcomes of arthroscopic transtibial pullout repair (ATPR) for the medial meniscus with both two modified loop stitches (TLS) and two simple stitches (TSS) techniques.

Methods: Between January 2013 and January 2016, 41 patients who had undergone ATPR for medial root tears with TLS and TSS techniques were retrospectively evaluated. The mean age at operation was 53 years (range 45-58). Read More

Skeletal Radiol 2020 Jun 2. Epub 2020 Jun 2.

Department of Orthopaedic Surgery, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama, 700-8558, Japan.

Objectives: To identify the diagnostic performance of magnetic resonance imaging (MRI) in the knee-flexed position for the detection of meniscal ramp lesions in patients with anterior cruciate ligament tears.

Materials And Methods: Forty-three patients (mean age 24.5 ± 9. Read More

Cartilage 2020 Jun 1:1947603520924762. Epub 2020 Jun 1.

Rehasport Clinic, Poznań, Poland.

. To determine the 5-year success rate of the "all-inside" technique of arthroscopic meniscus suture and collagen membrane wrapping along with bone marrow blood injection, to evaluate the progression of degenerative changes and the impact of simultaneous anteriro cruciate ligament (ACL) reconstruction. . 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

Ir J Med Sci 2020 May 28. Epub 2020 May 28.

Department of Orthopaedics, Our Lady's Hospital, Navan, Ireland.

Introduction: We assess the requesting patterns and overall utility of MRI scans in our institution over a 6-month period for knee pain in an elderly population.

Methods: We performed a retrospective cohort study analysing patients undergoing a knee MRI between June 2018 and January 2019. Clinical notes were reviewed to determine the nature of any surgical intervention that was performed as a result of the MRI findings. Read More

Adv Orthop 2020 8;2020:1895852. Epub 2020 May 8.

Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.

Background: Many clinical tests and diagnostic studies have been developed to increase the clinician's ability to accurately diagnose disorders of the knee. Torn menisci or ligamentous structures within the knee cause significant pain and disability and thus require expeditious management. This study was conducted to evaluate the accuracy of clinical examination in comparison with MRI examination and with the help of arthroscopic examination as the gold standard in the diagnosis of meniscal tears. Read More

J Knee Surg 2020 May 19. Epub 2020 May 19.

Department of Orthopedic Surgery, Orthopedic Sports Medicine Center, Fort Lauderdale, Florida.

At the present time, there is a paucity of literature regarding medial meniscal posterior root repair and outcomes. This review seeks to examine the currently available data to further elucidate the clinical risks and benefits and any associated risks of medial meniscal posterior root repair. A systematic literature search was performed up to July 2018 in the databases of Medline via PubMed, EBSCOhost, and EMBASE. Read More

Ann Med Surg (Lond) 2020 Jun 25;54:93-96. Epub 2020 Apr 25.

Department of Orthopaedic Surgery, King Saud University, Riyadh, Saudi Arabia.

Introduction: Meniscal injuries are one of the most common musculoskeletal injuries around the knee affecting patients of different genders, ages and activity levels. These injuries could be acute or chronic tears that cause pain and mechanical symptoms based on the injury severity and whether it is displaced and entrapped in an abnormal location within the knee or not. Advances in magnetic resonance imaging (MRI) allowed us to have a better understanding of multiple bucket handle meniscal tear patterns with its specific MRI signs which have been reported in the literature. Read More

Am J Sports Med 2020 Jun 14;48(7):1702-1710. Epub 2020 May 14.

Arthroscopy and Joint Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.

Background: While the medial meniscal posterior horn (MMPH) is reported to bear a considerable portion of overall load on the knee joint, including compressive and shear forces, no study has yet investigated the relationship between the MMPH and posterior tibial slope (PTS), which is a geometric factor associated with the shear force component in the presence of a compressive load in the knee joint.

Hypothesis/purpose: The purpose was to investigate the relationship between the PTS and MMPH tears in patients without ligamentous injury. It was hypothesized that the PTS is greater in patients with MMPH tears as compared with those without. Read More

Skeletal Radiol 2020 May 9. Epub 2020 May 9.

Department of Radiology, University of Ottawa, Ottawa, Canada.

Objectives: To determine the prevalence and characteristics of erosions associated with parameniscal cysts (PMCs) and to evaluate the profile of the associated meniscal tears MATERIALS AND METHODS: PACS database was reviewed for knee MRI scans performed over a 5-year period identifying those with PMCs in patients aged 18 years and above. The scans with PMCs were evaluated for the presence of associated osseous erosions. These erosions and PMCs were then analyzed. 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

J Orthop Surg Res 2020 Apr 25;15(1):160. Epub 2020 Apr 25.

, Yakima, USA.

Background: To investigate differences in the tibial tubercle-trochlear groove (TT-TG) and patellar tendon-posterior cruciate ligament (PT-PCL) distances in symptomatic patients with non-contact internal knee derangements (IKD) and symptomatic patients with internally intact knees (control).

Methods: A retrospective review of MRI studies was completed by comparing 78 patients with meniscal and ligamentous derangements of the knee to 63 internally intact knees (age range, 13 to 50 years). MRI findings were reviewed independently by two board-certified radiologists to assess for agreement. Read More

Orthop J Sports Med 2020 Apr 10;8(4):2325967120914568. Epub 2020 Apr 10.

Sports and Joint Surgery, Gelenkpunkt, Innsbruck, Austria.

Background: Radial tears of the lateral meniscus frequently accompany acute anterior cruciate ligament (ACL) injuries and lead to increased joint stress and pathological meniscal extrusion (ME). The dynamic behavior of the lateral meniscus after radial tear repair with respect to ME has not been described.

Purpose: To quantitatively assess dynamic lateral ME after all-inside radial tear repair. Read More

Sports Med Open 2020 Apr 19;6(1):19. Epub 2020 Apr 19.

Department of Traumatology and Orthopaedic Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation.

Background: Currently, no data is available regarding the association between professional experience or limb dominance and the prevalence of asymptomatic knee joint lesions in adult professional male soccer players.

Hypothesis: The prevalence of the accumulated changes increases with training experience. This is especially true for the dominant leg, which is involved in a large proportion of the athletes' movements. Read More

J Orthop Sci 2020 Apr 10. Epub 2020 Apr 10.

Department of Orthopaedic Surgery, Okayama University Hospital, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan.

Background: Medial meniscus (MM) posterior root repairs show favorable clinical outcomes in patients with MM posterior root tears (MMPRTs). However, there is no useful magnetic resonance imaging (MRI) finding to determine a functionally good meniscal healing following MM posterior root repairs. We hypothesized that a characteristic postoperative MRI finding can predict a good meniscal healing following pullout repairs. Read More

J Exp Orthop 2020 Apr 7;7(1):19. Epub 2020 Apr 7.

Center of Orthopaedics and Traumatology, Brandenburg Medical School Theodor Fontane, Hospital Brandenburg an der Havel, 14770, Brandenburg an der Havel, Germany.

Purpose: The gracilis tendon (GT) is a commonly used autologous graft in Orthopaedic surgery. The majority of information on knee function and outcomes after hamstring harvest is related to both semitendinosus and GT harvest. Little is known regarding isolated harvest of a GT. Read More

J Orthop Res 2020 Mar 27. Epub 2020 Mar 27.

Sports Medicine Research Institute, The Ohio State University Wexner Medical Center, Columbus, Ohio.

We sought to use publicly available data from the Osteoarthritis Initiative (OAI), a multicenter prospective cohort study, to determine the rate of joint space loss and likelihood of knee arthroplasty due to magnetic resonance imaging (MRI)-diagnosed meniscal tears or meniscal extrusion in middle-aged adults with no to mild knee osteoarthritis. Participants (n = 2199; mean age, 60.2 years) with Kellgren-Lawrence osteoarthritis grades 2 (mild) (48. Read More

BMC Musculoskelet Disord 2020 Mar 27;21(1):190. Epub 2020 Mar 27.

Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea.

Background: Meniscal cysts are not uncommon in clinical practice, with reported incidence rates varying from 1 to 22%. Most meniscal cysts are parameniscal cysts, which are created by extravasation of synovial fluid through the meniscal tear into the adjacent soft tissue. In contrast, intrameniscal cysts in which the fluid collects in the meniscus are very rare. Read More

Skeletal Radiol 2020 Aug 23;49(8):1277-1284. Epub 2020 Mar 23.

Department of Radiology, Seoul National University Bundang Hospital, 82 Gumi-ro, 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea.

Objective: To determine the association of meniscal flounce with the pattern and location of the meniscal tear, concomitant ligamentous injury, amount of knee joint effusion, and flexion and rotation angles.

Materials And Methods: A total of 283 knees of 280 patients were retrospectively reviewed over a 9-month period. Thirty-one magnetic resonance images of patients with meniscal flounce were compared with those of age- and sex-matched control group (n = 62) without meniscal flounce. Read More

Osteoarthritis Cartilage 2020 Jul 14;28(7):897-906. Epub 2020 Mar 14.

Division of Orthopedic Surgery, Oslo University Hospital, Oslo, Norway; Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway. Electronic address:

Objective: To evaluate progression of individual radiographic features 5 years following exercise therapy or arthroscopic partial meniscectomy as treatment for degenerative meniscal tear.

Design: Randomized controlled trial including 140 adults, aged 35-60 years, with a magnetic resonance image verified degenerative meniscal tear, and 96% without definite radiographic knee osteoarthritis. Participants were randomized to either 12-weeks of supervised exercise therapy or arthroscopic partial meniscectomy. Read More

Am J Sports Med 2020 04 16;48(5):1078-1087. Epub 2020 Mar 16.

Sports Medical Center, Konkuk University Medical Center, Seoul, Republic of Korea.

Background: Few studies have reported the healing process of anterolateral ligament (ALL) injuries.

Purpose/hypothesis: This study investigated the healing status of ALL injuries after primary anterior cruciate ligament (ACL) reconstruction (ACLR). Additionally, we investigated the association between the healing status of ALL injuries and associated lesions such as osseous lesions and meniscal tears occurring at the time of an ACL rupture. Read More

J Orthop Surg (Hong Kong) 2020 Jan-Apr;28(1):2309499020906745

SingHealth Duke-NUS Musculoskeletal Sciences Academic Clinical Programme, Singapore.

Background/objective: Arthroscopic surgery in knee osteoarthritis is controversial with many studies refuting its efficacy in recent literature. This study aims to evaluate the mean duration to knee arthroplasty, and the effect of microfracture on the need for subsequent knee arthroplasty in patients above the age of 55 undergoing arthroscopic procedures for osteoarthritis.

Methods: One hundred and nine consecutive patients with diagnosed osteoarthritis who underwent arthroscopic surgery performed from January 2000 to December 2012 on patients aged 55 years and above by a single surgeon were reviewed retrospectively. Read More

BMC Musculoskelet Disord 2020 Feb 28;21(1):130. Epub 2020 Feb 28.

Fuzhou Second Hospital Affiliated to Xiamen University, No.47, Shang Teng Street, Cang Shan District, Fuzhou, China.

Background: The aim of this study was to determine the radiographic, second-look, and functional outcomes after arthroscopic side-to-side repair for complete radial posterior lateral meniscus root tears (PLMRTs).

Methods: Patients who underwent arthroscopic side-to-side repair for complete radial PLMRTs were identified. Clinical assessment consisted of symptoms (locking, catching, giving way and effusion), examinations of joint-line tenderness and McMurray test, and subjective scores of International Knee Documentation Committee (IKDC), Lysholm, and Tegner. Read More

Skeletal Radiol 2020 Jul 14;49(7):1099-1107. Epub 2020 Feb 14.

Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, Middlesex, London, HA7 4LP, UK.

Objective: To identify abnormalities in asymptomatic sedentary individuals using 3.0 Tesla high-resolution MRI.

Materials And Methods: The cohort comprised of 230 knees of 115 uninjured sedentary adults (51 males, 64 females; median age: 44 years). Read More

Knee Surg Sports Traumatol Arthrosc 2020 Feb 14. Epub 2020 Feb 14.

Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa-shi, Ishikawa-ken, 920-8641, Japan.

Purpose: This study aimed to investigate the occurrence and characteristics of lateral meniscus anterior root injuries during anatomical single-bundle anterior cruciate ligament (ACL) reconstruction.

Methods: Between 2011 and 2018, 70 women who had ACL injuries without lateral meniscal tears underwent anatomical single-bundle ACL reconstruction. Using computed tomography, the anatomical relationship between the predicted lateral meniscus anterior root insertion and the tibial tunnel was retrospectively assessed, and the patients were divided into partial lateral meniscus anterior root injury and intact groups. Read More

Emerg Radiol 2020 Feb 11. Epub 2020 Feb 11.

Department of Radiology, University of Massachusetts Medical School, 55 North Lake Avenue, Worcester, MA, 01655, USA.

Bucket handle meniscus tears are difficult to diagnosis and are one of the most frequently missed tear patterns on magnetic resonance imaging (MR). However, this meniscal injury often requires arthroscopic intervention and preoperative characterization of the tear is important to orthopedic surgeons for treatment planning. MR is currently the best imaging modality for evaluating meniscal tears, but trauma patients in the emergency room more often undergo radiographs and further evaluation with computed tomography (CT) exams. Read More

Semin Musculoskelet Radiol 2020 Feb 28;24(1):21-29. Epub 2020 Jan 28.

Division of Musculoskeletal Imaging and Intervention, Department of Radiology, University of Massachusetts Memorial Medical Center and University of Massachusetts Medical School, Worcester, Massachusetts.

Artificial intelligence (AI) holds the potential to revolutionize the field of radiology by increasing the efficiency and accuracy of both interpretive and noninterpretive tasks. We have only just begun to explore AI applications in the diagnostic evaluation of knee pathology. Experimental algorithms have already been developed that can assess the severity of knee osteoarthritis from radiographs, detect and classify cartilage lesions, meniscal tears, and ligament tears on magnetic resonance imaging, provide automatic quantitative assessment of tendon healing, detect fractures on radiographs, and predict those at highest risk for recurrent bone tumors. Read More

Curr Med Imaging Rev 2020 ;16(1):2-15

Computer Engineering Department, Faculty of Electric and Electronics, Yıldız Technical University, İstanbul, Turkey.

Background: Automatic diagnostic systems in medical imaging provide useful information to support radiologists and other relevant experts. The systems that help radiologists in their analysis and diagnosis appear to be increasing.

Discussion: Knee joints are intensively studied structures, as well. Read More

Skeletal Radiol 2020 May 25;49(5):677-689. Epub 2020 Jan 25.

University of Miami Sports Medicine Institute, 5555 Ponce de Leon Blvd, Coral Gables, FL, 33146, USA.

Background: Meniscal ramp lesions have been defined as longitudinal vertical peripheral tears of the medial meniscus involving the posterior meniscocapsular ligament, meniscotibial ligament, and/or the red-red zone of the posterior horn. They are heavily associated with anterior cruciate ligament injuries, and because of their potentially important biomechanical role in knee stabilization, injuries to this region may require surgical repair. However, due to their location and lack of general knowledge regarding their different types and associated appearances on magnetic resonance imaging, ramp lesions are routinely underreported. Read More

Arthroscopy 2020 04 20;36(4):1135-1141. Epub 2020 Jan 20.

Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, U.S.A.

Purpose: To determine (1) the demographic characteristics as well as radiographic findings of medial versus lateral meniscal root tears at time of presentation, (2) treatment decisions and clinical outcomes of patients undergoing medial versus lateral root repair, and (3) risk factors for worse clinical and radiographic outcomes.

Methods: A retrospective review was performed to identify patients with symptomatic, medial, or lateral meniscus posterior root tears with a minimum 2-year follow-up. Radiographs were graded using Kellgren-Lawrence scores. Read More

Pol J Radiol 2019 6;84:e340-e346. Epub 2019 Sep 6.

University Institute for Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Switzerland.

Purpose: The purpose of this study was to assess the suitability of susceptibility-weighted imaging (SWI) sequences using the 3T MRI-unit for assessment of potential intraarticular pathologies in patients with acute and chronic torsion trauma of the knee joint.

Material And Methods: Sixty-three patients with subacute and chronic rotary knee joint trauma of either the left or right knee were studied using an Achieva MRI 3T device (Philips, Amsterdam, Netherlands). Ground truth was set by two expert radiologists with seven and 10 years of experience in musculoskeletal imaging. Read More

Br J Sports Med 2020 May 20;54(9):520-527. Epub 2020 Jan 20.

Division of Orthopedic Surgery, Oslo University Hospital, Oslo, Norway.

Objective: To investigate the risk of new meniscal tears after treatment for anterior cruciate ligament (ACL) injury, in children and adults with and without ACL reconstruction.

Design: Prognosis systematic review (PROSPERO registration number CRD42016036788).

Methods: We searched Embase, Ovid Medline, Cochrane, CINAHL, SPORTDiscus, PEDro and Google Scholar from inception to 3rd May 2018. Read More

Arthroscopy 2020 04 14;36(4):1074-1082. Epub 2020 Jan 14.

Department of Orthopaedic Surgery, Kyung Hee University Hospital, Seoul, Republic of Korea. Electronic address:

Purpose: To compare the clinical and magnetic resonance imaging (MRI) outcomes of meniscal repair using absorbable versus nonabsorbable sutures in patients undergoing concomitant anterior cruciate ligament reconstruction.

Methods: Data of 142 patients who underwent meniscal repair with concomitant anterior cruciate ligament reconstruction using either absorbable or nonabsorbable sutures for longitudinal meniscal tear were retrospectively reviewed. Inside-out suture technique was used for all meniscal repairs. Read More

J Orthop Translat 2020 Jan 7;20:47-55. Epub 2019 Aug 7.

State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital Affiliated to Medical School of Nanjing University, China.

Background: The biomechanical change during the medial meniscus damage in the process of knee osteoarthritis has not been explored. The purpose of this study was to determine the effect of aggravating medial meniscus degenerative tear on the progress of knee osteoarthritis through the finite-element simulation method.

Methods: The three-dimensional digital model of a total-knee joint was obtained using a combination of magnetic resonance imaging and computed tomography images. Read More

Nucl Med Commun 2020 Mar;41(3):182-188

Department of Radiology and Nuclear Medicine, Cantonal Hospital Lucerne, Lucerne, Switzerland.

Objective: To evaluate the additional value of single-photon emission computed tomography/computed tomography arthrography compared with single-photon emission computed tomography/computed tomography alone in wrist, ankle, and knee joints.

Materials And Methods: Retrospective evaluation of 68 patients including 74 joints (48 wrists, 13 upper ankle (talocrural joint), and 13 knee joints) was performed. Activity in single-photon emission computed tomography/computed tomography images was graded using a four-point scale: 0 no uptake, one low uptake, two moderate uptake, and three high uptake. Read More

Acta Med Okayama 2019 Dec;73(6):503-510

Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.

Clinical studies have demonstrated that transtibial pullout repair led to favorable midterm outcomes in patients with medial meniscus posterior root tears (MMPRTs) although medial meniscal extrusion (MME) continued to be present. It has been unclear whether these residual postoperative MMEs existed after the pullout repair or had progressed at the very short-term evaluation after surgery. We sought to determine which characteristics of patients with MMPRTs influence the incidence of postoperative MME. Read More

Zhongguo Gu Shang 2019 12;32(12):1077-1081

Department of Orthopaedics, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China.

Eur Radiol 2020 Mar 6;30(3):1544-1553. Epub 2019 Dec 6.

Department of Radiology, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, #892, Dongnam-ro, Gangdong-gu, Seoul, 05278, Republic of Korea.

Purpose: The purpose of this study was to investigate whether Baker cyst (BC) was related to the specific arrangement of the medial head of gastrocnemius tendon (MHGT) and the semimembranosus tendon (SMT).

Materials And Methods: Patients who underwent knee MRI with "Baker cyst" in PACS from August 2017 to February 2018 were included in this study. Patients who did not have BC in a knee MRI performed during the same period were included in the control group. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Nov 30. Epub 2019 Nov 30.

Department of Orthopedics, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan, China.

Purpose: This study was undertaken to elucidate the clinical significance of widening of the popliteal hiatus on magnetic resonance imaging (MRI), and to document the clinical results and technical aspects of arthroscopic repair of this finding.

Methods: Included are 82 knees after arthroscopic surgery, divided according to arthroscopic diagnosis into group A, hypermobility of lateral meniscus, 8 knees; group B, tear of the anterior horn of the lateral meniscus, 32 knees; and group C, no abnormality of the lateral meniscus, 36 knees with medial meniscal tears and 6 with other conditions. Popliteal hiatus diameter was measured and the popliteal hiatus/lateral tibial plateau (LTP) ratio was calculated on preoperative sagittal and coronal MRI. Read More

Int J Surg Case Rep 2019 19;65:339-343. Epub 2019 Nov 19.

Hamad Medical Corporation, Hamad General Hospital, Al Rayan Road, Doha, P.O Box 3050, Qatar.

Introduction: Meniscal tears are common knee injuries that occur in different populations and particularly among athletes. Either isolated or accompanied with anterior cruciate ligament injury, meniscal tears can be a source of significant knee pain, locking and instability. Different patterns of meniscal tears are described radiologically and arthroscopically, however displacement of the torn part of the meniscus can cause characteristic appearance on MRI. Read More

Clin Sports Med 2020 Jan;39(1):57-68

Twin Cities Orthopedics, 4060 West 65th Street, Edina, MN 55435, USA. Electronic address:

Meniscus root tears biomechanically disrupt normal joint loading and lead to joint overload with the possible development of spontaneous osteonecrosis of the knee and early-onset osteoarthritis. Proper identification and treatment of meniscal root tears has been proven to restore joint loading and improve patient outcomes. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Nov 20. Epub 2019 Nov 20.

Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Yanagido 1-1, Gifu, 501-1194, Gifu, Japan.

Purpose: The purpose of this study was to evaluate the clinical outcomes and meniscus healing after arthroscopic repair of horizontal-cleavage meniscus tears, compared with vertical-longitudinal meniscus tears.

Methods: This was a retrospective review of a consecutive series of 52 meniscal repairs for horizontal-cleavage tears (n = 27) or vertical-longitudinal tears (n = 25); the groups were compared with respect to clinical symptoms and meniscal healing. Arthroscopic meniscal repair was performed using the inside-out technique with a marrow-stimulating technique. Read More

Diagn Interv Imaging 2020 Mar 11;101(3):169-176. Epub 2019 Nov 11.

CNRS, ISM UMR 7287, Department of Orthopedics and Traumatology, Institute of Movement and Locomotion, Aix Marseille Université, 13288 Marseille, France.

Purpose: The purpose of this retrospective study was to describe our preliminary results of intra-meniscal administration of platelet rich plasma (PRP) in patients with degenerative meniscal tears of the knee.

Material And Method: Ten patients with degenerative meniscal tears according to the Stoller classification and without knee osteoarthritis were included. There were 7 men and 3 women with a mean age of 40. Read More

Arthrosc Tech 2019 Sep 23;8(9):e941-e946. Epub 2019 Aug 23.

The Steadman Clinic, Vail, Colorado, U.S.A.

Medial meniscal root tears are often disabling injuries that can occur in isolation during low-velocity, deep knee flexion maneuvers in middle-aged patients. The most common meniscal root tear pattern is a radial tear near the root attachment (type II). Root tears are often associated with meniscal extrusion, identified on magnetic resonance imaging. Read More

Am J Sports Med 2020 Jul 4;48(8):2051-2059. Epub 2019 Nov 4.

Department of Orthopedic Surgery, Suncheon Jungang Hospital, Suncheon, Jeollanam-do, Republic of Korea.

Background: The clinical importance of meniscal ramp lesions in patients with anterior cruciate ligament (ACL) tear has emerged as a major issue. However, the diagnostic accuracy of magnetic resonance imaging (MRI) for detecting ramp lesions has a wide range.

Purpose: To perform a systematic review and meta-analysis of the diagnostic performance of MRI for diagnosing ramp lesion in patients with ACL tear. Read More

Am J Sports Med 2019 12 23;47(14):3396-3405. Epub 2019 Oct 23.

Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

Background: Large radial tears of the meniscus involving the avascular region can compromise meniscal function and result in poor healing and subsequent osteochondral degeneration. Augmentation of surgical repairs with adipose-derived stromal vascular fraction (SVF), which contains mesenchymal stromal cells, may improve meniscal healing and preserve function (ie, chondroprotection).

Purposes: (1) To develop a goat model of a radial meniscal tear with resulting osteoarthritis and (2) to explore the efficacy of a 1-step procedure utilizing infrapatellar fat pad-derived SVF cells seeded in a photocrosslinkable hydrogel to enhance meniscal healing and mitigate osteochondral degeneration. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Oct 22. Epub 2019 Oct 22.

Department of Orthopaedic Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya City, Hyogo, 663-8501, Japan.

Purpose: The purpose of this study was to examine the results of meniscal repair performed for symptomatic degenerative medial meniscal tears.

Methods: Twenty-four knees in 24 patients with symptomatic degenerative medial meniscal tears (mostly complex horizontal tears) who underwent isolated arthroscopic repair combined with autologous fibrin clot implantation were included in this study. The patients were followed up for a minimum of 2 years. Read More