[Value of girth-like wire fixation of patellar fractures in early mobilization of the knee joint].
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Mobilization
Value (mathematics)
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Background: the menisci of the knee are complex structures with various important functions within the knee.Loss of the menisci leads to a significantly increased risk of developing degenerative changes in the long term.Purpose: this study aimed to investigate the role of Ultrasound (US) in diagnosis of meniscus tears as compared to Magnetic Resonance Imaging (MRI) Patients and Methods: this study included 50 patients, presented by pain, swelling, stiffness/limitation of movement or a history of acute/chronic knee trauma, in the duration between November 2017 and July 2018.The research was carried on the Radiology Department, Al Azhar General Hospital, Zagazig, Sharkia Governorate, Ministry of Health.All patients underwent musculoskeletal ultrasound in different position then underwent magnetic resonance imaging included different pulse sequences and scanning planes.Results: this study included 50 patients, 31 (62%) males and 19 (38%) females.The patient's age ranged between 10 and 67 years with a mean of 37.65 ± 10.24 SD.Male patient's age ranged between 10 and 67 years with a mean of 36.35 ± 11.03 SD, while female patient's age ranged between 29 and 55 years with a mean of 40 ± 8.34 SD.Conclusion: high resolution ultrasonography had high accuracy in detecting presence of tears in both the medial and lateral menisci.MRI is more sensitive in detection and determines types of tears than US.
Medial meniscus
Meniscus
Knee pain
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Biomechanics
Sitting
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Objective Study the perioperative nursing of the patients with purulent knee joint arthritis treated with arthroscopic debridement and postoperative continous lavage.Methods To collect the clinical data of 18 patients with purulent knee joint arthritis treated with arthroscopic de-bridement and postoperative continous lavage using normal saline with antibiotics for 1 week to 2 weeks.Criterion of nusing and rehabilitation were made and its therapeutic effects were observed.Results The methods had advantages in decreasing hospitalization period and increasing therapeutic effects.All these patients were cured.There were statistic difference(P 0.01) between preoperative and postoperative for the average HSS score and the knee joint movable degree.Conclusion The methods provided an effective choice for treatment of purulent knee joint arthritis.Postoperative nursing following the criterion of routine nursing was especially important during the treatment.
Debridement (dental)
Knee arthritis
Therapeutic effect
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Mobilization
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It is essential to use individually parameterized models for the knee joint as well as for the patellofemoral joint while analyzing the correlations between external and internal loads
and the efficiency of specific training exercises for the lower extremities. A new approach to estimate the moving joint axis within the knee joint using motion analysis data was evaluated. The results of this single case study show that this approach might offer a possibility to parameterize an individualized knee joint model without using MRI scans.
Motion analysis
Patellofemoral joint
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Objective To present the fracture of the knee joint spatially,and evaluate the value of three-dimensional computed tomogramphy in the diagnosis of the knee joint fracture.Method Three-dmensional(3D) CT in aging reconstruction was performed using Helical CT in 68 case of the knee joint fracture,and used MPR and VR to reconstruction the fracture of the knee joint.Results The 3D in ages could rotate around X and Z axes and be cut freely and viewed from different perspectives,fracture of the knee joint could be presented completely on the 3D in ages.Conclusion 3D CT is effective in the diagnosis of the knee joint fracture providing better surgical management.
Knee flexion
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Abstract Numerical modeling of the human knee joint has been pursued by various researchers [1,2]. Several knee joint models have been reported to simulate the kinematic and dynamic response of the knee joint to external loads, which to various degrees are representative of those found in the knee’s daily function. However, experimental validation of these models has been scarcely documented. Typical validation procedures should include a comparison of computational results from numerical simulations, to those from experimental tests performed on actual human joint specimens. The loading conditions must be carefully controlled and reproduced from one testing approach to another for acceptable comparison of the knee joint responses.
Computational model
Computational simulation
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In recent years, there are many devices developed to assist walking with the aging society. For many people needing walk assistance, the development of being simple structure and the inexpensive device is expected. In this research, focusing on the functional relationship between the knee joint and the ankle joint when walking on the human , and the electronic control is unnecessary by reproducing the functional relationship with the input angle and output angle of the link mechanism, and a device that does not require external power is developed. The device consists of a planar six-bar linkage and is fixed to the cruris, the thigh and the foot of the human body. As a search method of the device, first, the functional relationship between the knee joint angle and the ankle joint angle was corrected to an approximate expression, and the random search after the search region is limited through the trial process . In this paper, we describe design method of the device.
Linkage (software)
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Mobilization
Joint mobilization
Joint Contracture
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[Purpose] The aim of this study was to investigate the histopathological effects of mobilization on joint components using a rat knee joint contracture model. [Method] Twenty-two male Wistar rats (aged 9 weeks) were randomly divided into an experimental group (n = 18) and a control group (n = 4). The experimental group had the right posterior limb knee joint immobilized for 8 weeks to induce contracture after which this group was subdivided into three subgroups–immobilized, treatment, and non-treatment groups. In the immobilized group (n = 6), knee joint specimens were collected immediately after immobilization. The non-treatment group (n = 6) was bred normally for 8 weeks, while the treatment group (n = 6) underwent mobilization during the same 8 weeks. After breeding, we prepared tissue specimens of the knee joint for observation in the sagittal plane and examined them using a light microscope. [Results] Compared to the non-treatment group, the treatment group showed an increase in the number of fat cells in the synovial subintima and a reduction in the density of collagen fiber bundles in the posterior joint capsule. [Conclusion] Joint mobilization appears to effectively improve joint function.
Joint mobilization
Joint capsule
Synovial joint
Joint stiffness
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