scholarly journals Interpretation of the Common MRI Findings in Patients with Painful Knee Joint

2021 ◽  
pp. 19-26
Keyword(s):  
Knee Joint ◽  
Knee Pain ◽  
Cruciate Ligament ◽  
Clear Understanding ◽  
Collateral Ligament ◽  
Mri Findings ◽  
Meniscus Injury ◽  
Appropriate Treatment ◽  
The Common ◽  
Painful Knee

Nowadays knee joint pain is a major public health issue and for an appropriate treatment option, it is important to have a clear understanding of the cause of pain as well as to identify the exact location of the pain. In the initial evaluation of acute knee pain, radiological findings help physicians in taking decisions regarding appropriate treatment. Besides conventional radiography and computed tomography (CT), Magnetic resonance imaging (MRI) is often used to diagnose the reason for knee problems. This study it is tried to evaluate the common MRI findings in patients with painful knee joints. The sample population comprised 77 outpatients had an age range between 14 to 66 years, representing male 70.13% and Female 29.87%. The study shows that the maximum numbers of patients were in the 26-30 years age group, which exposed that young people are more affected with knee pain. In this study, it is found that joint effusion is the most common pathology frequently found in 59.74% of patients followed by meniscus injury 53.24%, anterior cruciate ligament (ACL) tear 36.06%, Lateral meniscus injury 16.88%, Posterior cruciate ligament (PCL) tear 7.8%, Bone marrow contusion 22.07%, Osteoarthritis12.98%, Medial collateral ligament (MCL) injury 3.89%, Lateral collateral Ligament (LCL) 0%, Fracture 6.49%, Chondromalacia1.3%, Baker cyst 1.3%. Though knee pain can be diagnosed by other imaging modalities, MRI can often provide strong evidence to support one.

The Joint Biomechanics Change by Different Anterior Cruciate Ligament Constitutive Models Under Axial Torque Load

2012 ◽  
Author(s):  
Chao Wan ◽  
Zhixiu Hao ◽  
Shizhu Wen
Keyword(s):  
Knee Joint ◽  
External Rotation ◽  
Cruciate Ligament ◽  
Constitutive Models ◽  
Collateral Ligament ◽  
Torque Load ◽  
Joint Biomechanics ◽  
Hyperelastic Model ◽  
Anterior Cruciate ◽  
Anterior Posterior

According to the previous papers, it was demonstrated that anterior cruciate ligament (ACL) played an important role in resisting the coupled anterior-posterior laxity rather than the rotation laxity under axial torque load of knee joint. In the biomechanics simulation research of knee joint, some different ligament constitutive models were presented to describe the ACL material behavior. However, there is few published paper to study the effect of variable ligament constitutive model on the joint biomechanics under axial torque load. In this paper, a 3-dimension finite element model of an intact tibiofemoral joint including all the main anatomical structures was reconstructed and two ACL constitutive models were compared under 10 Nm femur external torque load. The two ACL constitutive models corresponded to an isotropic hyperelastic model and a transversely isotropic hyperelastic model considering fiber effect, respectively. All the ACL material properties of the two constitutive models were defined by fitting the same stress-strain data. Another model with ACL resected was also analyzed under the same load to estimate the function ACL played under joint axial torque load. It was found that the resection of ACL changed the knee joint deformations significantly in all directions except the distal-proximal translation. In the ACL resected joint model, the internal-external rotation, anterior-posterior and medial-lateral translations increased by about 20%, 500% and 600%, respectively. Comparing to the ACL intact joint model, the Mises stress values of medial collateral ligament decreased while that on lateral collateral ligament increased greatly (from 35 MPa to 61 MPa). In the comparison of the two different ACL constitutive models, the internal-external rotation, as the highest deformation of the knee joint, changed by about 11% and the maximal deformation alteration was obtained in the anterior-posterior translation (about 80%). Both the highest stress value and distribution on ACL have altered mostly while the Mises stress distributions of other ligaments and menisci have changed slightly. The alteration of joint kinematics and ligament biomechanics by different ACL constitutive models would be due to the different descriptions of the material transverse behavior and the real complex ACL stress distribution under an axial torque load, although the longitudinal material behaviors described by different ACL constitutive models were almost the same based on the same experiment data.

scholarly journals INTRA-ARTICULAR SYNOVIAL HEMANGIOMA OF KNEE OVERLYING POSTERIOR CRUCIATE LIGAMENT - A CASE REPORT

2012 ◽  
Vol 02 (03) ◽  
pp. 42-44
Author(s):  
Dileep K. S. ◽  
Sandeep V. Kanakaraddi ◽  
Vidyasagar J.V. S. ◽  
Radha S. ◽  
Akshatha Rao Aroor
Keyword(s):  
Case Report ◽  
Knee Joint ◽  
Posterior Cruciate Ligament ◽  
Benign Tumor ◽  
Cruciate Ligament ◽  
Signs And Symptoms ◽  
Mri Findings ◽  
Synovial Hemangioma ◽  
Rare Benign Tumor

AbstractHemangioma of synovium is a rare benign tumor that can arise from any surface lined by synovium. Intra-articular synovial hemangioma is most common in the knee joint. The diagnosis is difficult as the signs and symptoms are nonspecific. We hereby report a hitherto unreported case of synovial hemangioma of knee overlying posterior cruciate ligament, its MRI findings and discuss the appropriate management

Design and Development of an Instrumented Knee Joint for Quantifying Ligament Displacements

2021 ◽  
Author(s):  
Lei Cui ◽  
Brody Dale ◽  
Garry Allison ◽  
Min Li
Keyword(s):  
Knee Joint ◽  
Rapid Prototyping ◽  
Cruciate Ligament ◽  
Lateral Collateral Ligament ◽  
Published Data ◽  
Collateral Ligament ◽  
Knee Ligaments ◽  
Leg Flexion ◽  
Anterior Cruciate ◽  
Four Bar Linkage

Abstract Recently robotic assistive leg exoskeletons have gained popularity because an increased number of people crave for powered devices to run faster and longer or carry heavier loads. However, these powered devices have the potential to impair knee ligaments. This work was aimed to develop an instrumented knee joint via rapid prototyping that measures the displacements of the four major knee ligaments\textemdash the anterior cruciate ligament (ACL), posterior crucial ligament (PCL), medial collateral ligament (MCL), and lateral collateral ligament (LCL)\textemdash to quantify the strain experienced by these ligaments. The knee model consists of a femur, lateral and medial menisci, and a tibia-fibula, which were printed from 3D imaging scans. Non-stretchable cords served as main fiber bundles of the ligaments with their desired stiffnesses provided by springs. The displacement of each cord was obtained via a rotary encoder mechanism, and the leg flexion angle was acquired via a closed-loop four-bar linkage of a diamond shape. The displacements were corroborated by published data, demonstrating the profiles of the displacement curves agreed with known results. The paper shows the feasibility of developing a subject-specific knee joint via rapid prototyping that is capable of quantifying the ligament strain via rapid prototyping.

scholarly journals Role of magnetic resonance in evaluation of anterior knee pain

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M Abdalraowf ◽  
E A Derwaish ◽  
A A Osman
Keyword(s):  
Knee Joint ◽  
Knee Pain ◽  
Anterior Knee Pain ◽  
Trochlear Dysplasia ◽  
Complex Structure ◽  
The Body ◽  
Radiology Department ◽  
Mri Findings ◽  
Common Complaint ◽  
Anterior Knee

Abstract Background The knee joint is one of the most commonly injured joints in the body. Because of its complex structure, this joint is subjected to numerous pathologies and due to the recent increase in various sport activities, there has been a parallel increase in sport-induced internal derangements of the knee. Acute knee pain is the most common complaint of the knee joint, which can be secondary to a variety of etiologies. Aim of the Work To review several of the most common causes of AKP, with emphasis on their MRI findings with the goal of allowing more accurate diagnosis and grading of some of the most common pathologies, for understanding, better treatment and improvement of this common complaint. Patients and Methods This study was conducted on in Ain Shams university hospitals and other private centers on 32 patients with ages ranging between 10-60 years. All presented by anterior knee pain and were referred to radiology department for MRI examination after orthopedic consultation. Results The majority of patients are female (63%) and the symptom most commonly occurs in the second and third decades of life. Conclusion MRI is generally safe, accurate, and specific modality which has been proven to be the modality of choice in the diagnosis of different knee pathologies that cause anterior knee pain in different age groups. Also it has a high specification in detecting the grades and types of some of these diseases or factors predispose to them as patella alta and trochlear dysplasia.

scholarly journals Anterior knee pain: uncommon aetiologies

2003 ◽  
Vol 59 (2) ◽  
Author(s):  
Q. Louw
Keyword(s):  
Knee Pain ◽  
Anterior Knee Pain ◽  
Clinical Presentation ◽  
Cruciate Ligament ◽  
Fat Pad ◽  
Intraosseous Pressure ◽  
Common Causes ◽  
The Common ◽  
Anterior Cruciate ◽  
Anterior Knee

The aim of this review is to inform clinicians of less common causes of anterior knee pain. Relatively less common conditions leading to anterior knee pain include infra-patellar contracture syndrome, conditions affecting the fat pad, saphenous nerve entrapment, prepatellar neuromas, increased intraosseous pressure of the patella, ganglions of the anterior cruciate ligament and cysts. The aetiology, clinical presentation, risk factors and management  of each condition are outlined. Due to the common occurrence of anterior knee pain clinicians must remain vigilant in assessing the cause of this clinical presentation.

A Review of the Relationships Between Knee Pain and Movement Neuromechanics

2021 ◽  
pp. 1-10
Author(s):  
Matthew K. Seeley ◽  
Hyunwook Lee ◽  
S. Jun Son ◽  
Mattie Timmerman ◽  
Mariah Lindsay ◽  
...  
Keyword(s):  
Knee Joint ◽  
Knee Pain ◽  
Joint Pain ◽  
Knee Injury ◽  
Cruciate Ligament ◽  
Ligament Injury ◽  
Neural Pathways ◽  
Joint Health ◽  
Chief Symptom

Context: Knee injury and disease are common, debilitating, and expensive. Pain is a chief symptom of knee injury and disease and likely contributes to arthrogenic muscle inhibition. Joint pain alters isolated motor function, muscular strength, and movement biomechanics. Because knee pain influences biomechanics, it likely also influences long-term knee joint health. Objective: The purpose of this article is 2-fold: (1) review effects of knee pain on lower-extremity muscular activation and corresponding biomechanics and (2) consider potential implications of neuromechanical alterations associated with knee pain for long-term knee joint health. Experimental knee pain is emphasized because it has been used to mimic clinical knee pain and clarify independent effects of knee pain. Three common sources of clinical knee pain are also discussed: patellofemoral pain, anterior cruciate ligament injury and reconstruction, and knee osteoarthritis. Data Sources: The PubMed, Web of Science, and SPORTDiscus databases were searched for articles relating to the purpose of this article. Conclusion: Researchers have consistently reported that knee pain alters neuromuscular activation, often in the form of inhibition that likely occurs via voluntary and involuntary neural pathways. The effects of knee pain on quadriceps activation have been studied extensively. Knee pain decreases voluntary and involuntary quadriceps activation and strength and alters the biomechanics of various movement tasks. If allowed to persist, these neuromechanical alterations might change the response of articular cartilage to joint loads during movement and detrimentally affect long-term knee joint health. Physical rehabilitation professionals should consider neuromechanical effects of knee pain when treating knee injury and disease. Resolution of joint pain can likely help to restore normal movement neuromechanics and potentially improve long-term knee joint health and should be a top priority.

scholarly journals A Spectrum of MRI Findings in the Knee Joint: A Retrospective Study of Selected Population in South-South Nigeria

2021 ◽  
Vol 7 (2) ◽  
pp. 5-9
Author(s):  
Okechukwu Felix Erondu ◽  
◽  
Nonyelum Aniebo ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Quadriceps Tendon ◽  
Synovial Chondromatosis ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Mri Findings

The knee is a very important joint and injuries affecting it may cause significant disability and discomfort to the patient. Despite a variety of methods available to assess injuries of the knee joint, Magnetic Resonance Imaging (MRI) continues to play a major role. This study evaluated the spectrum of MRI findings in a relatively low resource environment, with limited access to MRI modality. The outcome should justify further investment in MRI services in this locality. The study involves retrospective analysis of MRI reports of 198 clinically symptomatic patients referred for imaging in a Port-Harcourt. All examinations were performed using GE BRIVO MR 235 machine with 0.35 Tesla field strength in a well-coupled standard knee coil. All images were analyzed for normality or otherwise and radiological reports generated by competent radiologists. The most common findings are traumatic in origin, notably cruciate ligament tears (37.37%) and meniscal tears (33.3%) as well as quadriceps tendon tears (3.03%). The medial meniscus and anterior cruciate ligaments were more frequently involved. Furthermore, patients in the 3rd and 4th decade of life were more commonly involved, with a male preponderance. The less common findings of Synovial chondromatosis, cyst-like lesions, tumors and loose bodies, all buttress the importance of routine MRI in atraumatic cases. The spectrum of MRI findings in this study is a reflection of growing interest and confidence in MRI of the diseased knee joint in our environment. The outcome would be a justification for future investments in MRI. Keywords: Magnetic Resonance Imaging, knee injuries, tibial meniscal tears, incidental findings

scholarly journals Evaluation of MRI Findings in Chronic Painful Knee Joint

2019 ◽  
Vol 6 (43) ◽  
pp. 2818-2823
Author(s):  
Shubhda Sagar ◽  
Sunil Malhotra ◽  
Arunim Swarup ◽  
Ravikant Kaushik
Keyword(s):  
Knee Joint ◽  
Mri Findings ◽  
Painful Knee
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