10/24/13ACL Prostheses | Biotextiles Search Biotextiles MT 366 Biotextile Product Development Home ACL Prostheses Surgical Sutures Prolapse Repair Mesh Urethral Stent Vascular Prostheses Sample Page ACL Prostheses Ligaments are bands of tough, elastic tissue that bind bones together at joints so that they can move. The artificial ligament is primarily used for placement in the knee. There are four ligaments that surround the meniscus, which is a cartilage tissue that helps support the knee when it undergoes tension and torsion. The four ligaments are the anterior cruciate ligament (acl), the posterior cruciate ligament (pcl), the lateral collateral ligament (lcl), and the medial collateral ligament (mcl). An artificial ligament would be used to replace any one of these four ligaments that has been damaged. The main mechanical connection for the femur and tibia is the ACL Ligament within the knee. The collagen fiber bundles can withstand different stress loads depending on the biotextiles.wordpress.com/acl-prostheses/ 1/8 an artificial ligament is gifted with high flexibility. Artificial ligaments are mainly constructed as woven or braided materials.000 N. soccer. As a braided fabric structure.com/acl-prostheses/ 2/8 . There are over 60. but have been known to be nonwoven materials as well. Artificial ACLs developed today can withstand loads of around 4. or silk) all have a round cross-section which is ideal for use in this part of the body because it is surrounded by the human tissue in the knee so that the artificial ligament is secured in place. The fibers used (typically ePTFE. polyester. high — Im age of the parts of the knee around the m eniscus durability. — Snapshot of a soccer play er in the process of injuring his Anterior Cruciate Ligam ent ACL injuries usually occur within young athletes who participate in sports or activities that place heavy stress on the knees. and high cover. The success rate for reconstruction is between 75%-95% and failure rate is around 8% due to graft failure or instability. and any activity that requires side-to-side movement or hard cutting movements that stresses the ligaments in the knees. however it tends to suffer from poor mechanical performance in the long-term. hopefully for the duration of the user’s life. polyethylene. These sports or activities include football. A nonwoven would be used in order to utilize the fibrous mat made of graphite and Teflon to promote tissue growth using the implant.000 ACL reconstructions performed annually in the US. An average breaking load of a young athletes ACL is around 1700 to 2000 N. high strength. polyacetal polyethylene. Knitted fabrics tend to be much more elastic and flexible than any of the other three fabric biotextiles.wordpress.10/24/13 ACL Prostheses | Biotextiles patient’s age. skiing. In addition to athletic injuries.wordpress. Many sports that do not require bilateral movement (running.com/acl-prostheses/ 3/8 . and cover. Many times. cycling. woven fabrics boast high abrasion resistance. osteoarthritis. however put much more unneeded stress on the knee cartilage as the knee continues biotextiles. Pros Allows return to high-level athletic activity May protect future damage to the knee cartilage Offers a near-normal knee Cons Surgery is not 100% effective–some people don’t improve. Patients now opt for donor tissue grafts. such as the patella tendon or the hamstring tendon. however many patients have the choice as to whether or not they want to fix their acl. — Im age of an artificial ACL Artificial ligaments are a “last-resort” type operation. strength. All non-surgical treatments would have had to have failed in order for a replacement to be implanted. and swimming) can be done without an acl. Braided fabrics tend to take the advantages of both knitted and woven fabrics to create a highly function fabric.10/24/13 ACL Prostheses | Biotextiles constructions. Not repairing an acl could. or degenerative joint disease can be cause for an artificial ligament. The overall lifespan of an artificial acl is not very long. Many activities can be accomplished without an ACL There are complications that may occur. which usually uses the patellar tendon of a cadaver. The primary function of an artificial ligament is to provide mobility while decreasing the pain. cartilage can be worn out and boneto-bone contact can be extremely painful. Usually doctors will try to find a way to use ligaments from other parts of the body to repair an ACL. Many younger patients are recommended to have the re-constructive surgery. References: biotextiles. An artificial acl is not free from fault. The most common failure mechanisms are surface abrasion against bone. It has the capacity to fail like many other products placed inside the body. because they will need their knee for many years to come. whereas a 60 year old would not need their knee for as intense an activity as a younger person.wordpress. and fraying of textile structure due to unpredictable tissue ingrowth.com/acl-prostheses/ 4/8 .10/24/13 ACL Prostheses | Biotextiles to give out. flexural rotational fatigue of yarns and fibers. org/encyc/aclpros/aclpros.ncbi. Also.html http://emedicine.youtube.html http://www.com/watch?v=GtYmfQof-Io http://www. Reply ↓ biotextiles.com/watch?v=q96M0jRqn7k&feature=related Like Be the first to like this.nih.htm http://www.sportsci. but I’m a grammar person.com/biomedical_textiles.gov/pubmed/19915821 http://www.html http://www.swicofil.technicaltextile. like when writing a paper.net/medical-textiles/hospital-textiles.wordpress.com/acl-prostheses/ 5/8 .com/Apg-Ban/Artificial-Ligaments.youtube.about. it may flow better if references would put near the end.nlm. 6 THOUGHTS ON “ACL PROSTHESES” Jessica Johnson on April 13.youtube.medscape.com/article/89442-overview http://orthopedics. 2011 at 9:55 pm said: Looks great! Some of the sentences seem old grammatically.com/watch?v=kNvtEMTF6YE&w=640&h=390 http://www.10/24/13 ACL Prostheses | Biotextiles http://www.com/cs/aclrepain/a/acldecision.aspx http://www.discoveriesinmedicine. 10/24/13 ACL Prostheses | Biotextiles Patrick Monahan. Reply ↓ Lauren Blakely on April 20. A video about the procedure used to insert the artificial ligament or just a description of the procedure would be beneficial.wordpress. A table would be sufficient to have showing more properties that deal with the product. More disadvantages and advantages are also good to include for each fabric structure. 2011 at 4:19 pm said: We also agree the above comments and we think your blog would flow better if you moved the pictures so that the text was not around the pictures. 2011 at 2:48 am said: biotextiles. Brandon Hunt on April 25. 2011 at 3:00 pm said: I agree with the above 2 statements. Anh Ha.com/acl-prostheses/ 6/8 . I also agree about putting the references at the bottom. it will help your page flow a little better. Reply ↓ Camia McCorkle. I would add more mechanical and physical properties should be added. Nick Dippel on April 14. 2011 at 10:27 pm said: You could add a video showing more about the product. Reply ↓ Delisha Smith and Jacob Glasgow on April 20. soccer or other contact sport. (such as the patella tendon or the hamstring). A video would be good and references need to be added.wordpress. These patients are usually healthy active younger people.tx. Their rehabilitation will therefore normally be short in duration and quite intense. This is true and most relevant.10/24/13 ACL Prostheses | Biotextiles The blog is good so far. unlike those older patients with chronic cardiovascular and arthritic diseases. 2) I like your reference to “last resort type operation”. or playing football. It is important to stress that these injuries usually occur to athletes who experience one or several frontal (anterior) impacts to the knee due to accidents while downhill skiing. before considering the use of a totally artificial ACL prosthesis.edu URL: http://www.com/acl-prostheses/ 7/8 . 2011 at 11:42 am said: I have 3 comments: 1) At the end of the first paragraph please indicate the most common instances when ACL injuries occur. 3) What is the clinical experience with the use of implanted ACL prostheses? How long do they normally last and provide satisfactory mobility to the patient? What are the predominant modes of failure for these ACL prostheses? Thanks for considering these additional components of your blog. Martin W.ncsu. King Professor of Biotextiles & Textile Technology North Carolina State University Office: (919) 515-1011 Cellular: (919) 291-2563 E-mail: martin_king@ncsu. Please indicate the patient’s biological tissue of choice that the orthopedic surgeon would prefer to use. Reply ↓ Martin W.edu/biomedicaltextileslab/ Reply ↓ biotextiles. King on April 25. wordpress. Blog at WordPress. biotextiles.10/24/13 ACL Prostheses | Biotextiles Leave a Reply Enter your comment here.. | The Duster Theme.com/acl-prostheses/ 8/8 .com..