Questions related to Ligaments
I have experienced in my private practice that intradermal injections of G5W (Glucose 5% in Water) can be beneficial in mild forms of localized neuropathic pain. I also found some articles on this subject, where Glucose 5% was injected perineurally, epidurally and into joints. I wonder if therea re any clinicains who have had interesting results with Glucose (or dextrose) 5% injections. I have used them also in muscular trigger pints and in ligaments.
Jan Kersschot, MD
PS I am not a researcher myself, I simply have put my experiences in a e-book you can download for free online on www.glucopuncture.com
I was trying to add ligaments in cervical spine geometry. There it is mentioned in the existing literature to add the ligaments in the geometry as truss element with no effect of compression. However I am confused after creating these ligaments in specified positions as line bodies and implying material properties how to make the connections in the setup and then the compression free effect.
In literature, Anterior longitudinal ligament (ALL), Posterior longitudinal ligament (ALL), Supraspinous Ligament (SSL), Interspinous Ligament (ISL), Intertransverse Ligament (ITL), Facet Capsular Ligament (FCL), Ligamentum flavum (LFL) ligaments are modeled with the whole lumbar vertebrae. However, I couldn't reach the exact numbers of them in the model, repectively. Do you have any information about this? Could you give me a suggestion to solve this problem?
I'm trying to build a finite element model of the knee joint, but I'm having trouble applying the initial strain on the ligaments.
Data on initial strain is given in the literature, but I don't know how to apply the initial stress in ABAQUS, nor how to define the direction of the initial stress. I tried the predefined temperature field, but it didn't seem to work well.
Does anyone know how to set the initial strain and how to control the size and direction of the initial strain? Any answers will be appreciated. Thank you very much in advance.
I would like to know about Cervical spine ligament properties to study about the ROM, In particular stress strain graph. if possible May I get some suggestion/guidance from your about the FEM analysis of Cervical spine.
Pugazhenthi S K
I was pleased to be informed that the American International Medical University in St Lucia trains its students in the causes, diagnosis, management and prevention of diseases caused by Fluoride bio-accumulation.
Listed problems include: calcification of ligaments, with resulting impairment of muscles and pain. Constriction of vertebral canal and intervertebral foramen exerting pressure on nerves, blood vessels leading to paralysis and pain. Neurological manifestation: Nervousness and depression, tingling sensation in fingers and toes, excessive thirst and tendency to urinate. Loss of muscle power, inability to carry out normal routine activities. Skin rashes, Perivascular inflammation. Effects on foetus: Abortions, still births and children with birth defects are common in endemic areas. Formation of echinocytes by damage to erythrocytes leading to low haemoglobin levels.
Can anyone add to the list of institutions covering this topic in their curricula?
Tendons, ligaments, cartilage are composed of collagen. There are articles saying that collagen supplementation can help with tendon injuries. Where is the scientific evidence to support these claims? How is ingestion of collagen linked to an increase in collagen synthesis in the body?
Hi, I desperately need some medical advice. A doctor performed a ligament extracapsular surgery repair for my 5 years old cat and used a monofilament suture and a inox pin. 3 weeks after surgery she had a complication, a seroma with fibrin liquid was drained from her joint area. After that, we followed an antibiotic treatment for 9 days(amoxicillin). Now there are 7 weeks after surgery and the cat still have a lot of pain (is trembling most of the time), has difficulties in using the leg and walking and also have some fever episodes and a decreased appetite. What can be wrong? The doctor says that it doesn't have any drawer motion and that the RX is looking good. I don't know what to say... it might be a reaction to the suture or something else... what options do we have to heal her? Please help me :(
Hi all, I am new to Abaqus and currently are learning to model a human spine.
However, I faced trouble in setting up material. Does anybody know how to set up the material in the picture attached?
This is the properties to model capsular ligament in spine. I found it in one thesis. It shows that Capsular ligament is nonlinear material properties of non-linear stress-strain curve. Anyone know how to set up??
***This question may sound stupid to all the experts but I hope you guys can teach me how to do it****
I already have an assembly CAE for the lumbar spine model. However, my project needs me to model out facet capsular ligament for future study.
Basically what I need to do is model CL using truss elements. But the problem is how to create that truss element?? (Sorry because I'm very new to Abaqus and the resources available is very limited)
Any recommendations or solutions??
I am trying to section paraffin embedded human ligament at 20µm, but the tissue keeps breaking in the middle, with vertical lines throughout the tissue. Does anyone have any tips on how to resolve this issue?
I've tried a new blade, decalcifying in EDTA, a surface softener, and different temperatures.
The importance of analyzing the human walking gives huge information about the status of the human body. It represents the status of the neurological human system giving orders from the brain through the spinal cord and nerves, to move our limbs in a synchronized way using the muscles, bones, ligaments in an specific order to obtain the human displacement required, indicating a way to detect human movements disorders.
Bones are stiffer and, therefore, potentially more powerful springs than ligaments. The ground reaction force of a bouncing creature would load its springy bones and the stored potential energy would best be utilized by elastic recoil making it a very energy efficient system.
I am wondering if collagen will be measured accurately in the total measure for protein content. In other words, will the triple helical structure of collagen fibers affect its ability to be read using NanoDrop?
I had much time struggling with Elastin powder, that can not be fully dissolved in different solvents which I have tried (1% acetic acid, PBS, distilled water, 2% formic acid )unless I used 98% formic acid. The powder completely dissolved but I'm not sure if that a true way to dissolve the powder, as the Elastin solution has to be mixed with other polymers to produce hydrogel for skin regeneration. I'm worry that high concentration of formic acid can damage the molecular structure of Elastin and other mixed polymers.
I will appreciate if you can supplement me with similar papers, as I can't find specific answer in literature.
Looking for FEA software that can model dynamic joint kinematics over multiple cycles and has the ability to model elastic/viscoelastic materials in order to assess how tendon/ligaments in the simulation.
Well, this time I have a personal problem. I am a sport physician but I spent my career in muscle research. Now, I think I have a rupture of my costoclavicular ligament.
During a powerful breaststroke swim I experienced sudden subluxation of the sternoclavicular joint left that quickly regained its normal position. Since then I avoid (cannot) swim breaststroke, since it dislocates immediately at about middle of the side stroke, jumps a bit out of the sternoclavicular joint and comes back quickly as I terminate the movement. But I can crawl without problem. Also if I want to pull something to the side with my arm stretched by about 30 degrees sideways – it quickly dislocates and immediately comes back. I did not do my MRI.
Do I have costoclavicular rupture? Is there a therapy apart from the figure of eight bandage that I tried for many months and it did not work probably because when sleeping, I cannot hold my shoulder in the backward position. As soon as I move the arm forward, the clavicle moves forward and the distance between clavicle and the first rib is too large for the repair to take place spontaneously.
I am a sports medicine physician, (30 years of muscle and circulation research and in vitro and in vivo - small animal surgery) and anesthesiologist, ICU physician (40 years of observing attentively surgeons by their valuable work). I believe to know, more or less, what the surgeons know and can do and what they do not know and cannot do. Well, nobody is perfect
Therefore I am looking for a surgeon who performed a series of exactly those operations and has experience of the exchange of ideas with the colleagues who performed longer series of similar operations. So if you know somebody, please give me the reference.
Do you have a solution? My literature research was quite unsuccessful.
This is the image of Total RNA non- denaturing gel electrophoresis. I performed a total RNA extraction from dog (cartilage, blood, synovial fluid and knee ligament) tissue. Can someone please tell me what are the two bands intercalated between the 28s and 18s bands showing in the 3rd lane? Thanks
Hello. I'm using the FX-4000 tension system with BioFlex plates to apply strain to different ligaments and tendons. The protocol that I have been using is 4% or 10% (0.5Hz- 30s rest, 10s strain). Seeding the plates has been successful for synovium, patellar tendon, medial collateral ligament, and meniscus but not for anterior cruciate ligament. When I try to start the protocol, the ACL cells start to detach. I have tried to seed the wells with different concentrations (1x10^5, 3x10^5, 1x10^6) and different media (with and without FBS) and is still not working. We are using Collagen I coated plates. Could you help me with some info to overcome this issue? Thank you!
What do you think about utility of platelet rich plasma (PRP) in treatment of tendon and ligament injuries?
What is your experience with this method and your preferred preparation methods.
Would you expect benefit of such treatment in heamophilia patients?
Some sources explain there are 4 areas composing the ligament-to-bone or tendon-to-bone insertion, namely bone- calcified fibrocartilage - uncalcified fibrocartilage- ligament. I would like to know if someone knows about the gradation of the Young modulus across each of these sections and how it behaves under loading
One example of each from real life scenario will be appreciated.
Round ligament forms covering of the sac in an inguinal hernia in female children. Should it be preserved or ligated / transfixed. What would be long term implications of cutting the round ligament since they lend some support (false support of uterus) in adult life?
Do you manage it conservatively or surgically (volar and/or dorsal approach)?
If only volar fracture is present, do you also perform a dorsal approach and repair the radiotriquetral ligament?
I have a patient with active ankylosing spondylitis(AS) and second (2007;2012) kidney transplantation (due to chronic glomerulonephritis). Ankylosing spondylitis is active with BASDAI . 5,5 - 6,0 during last 3 years, CRO changes from 11 - 25 mg/l (normal value 0 - 5 mg/l), spine ligament calcification has found in 3 cervical and lumbar spine ligaments on X- ray. Due to kidney transplantation the patient use MMF and prednisolone.
Can anyone tell me the cross-sectional area of semitendinosus and biceps femoris (short head) tendons please? I can't seem to find any information on the cross-sectional area of these 2 tendons for humans, only the muscles. Thank you for any help you can give me!
I am searching for any reports stating the presence of costocoracoid ligament in cadavers, and if it is present can it cause such degree of occlusion/compression of the subclavian vessels, leading to the gangrene in patients?
The TFCC with its discus, ulna-carpal joint and ligaments is crucial for stability and mobility of the wrist. Due to its anatomic complexity it is submitted to delayed generation when it is injured.
Expected lesions in the TFCC in young pregnant woman are due to overburden of extension-pronation stance of wrist after a long bicycle-trip.