The Arthroscope Treatment Of The Injury Of Discoid Meniscus In Knee

Objective:To inquire the clinical character of the injury of Discoid meniscus andresearch the curative effect of the injury of Discoid meniscus underarthroendoscopy.Documents and Methods:The Deception of orthorpatic in China and Japan United hospital haveapplied Arthroscope suegery to treat the injury of Discoid meniscus totally 28persons between September in 2002 and August in 2005, Among discussedabove partly-resection occupied 19 persons, Seccorday-intect resectionoccupied 7 persons and intact resection occupied 2 patieuts.Result:It is reperted 82% good to exceuent results of arthroscopic meniscalresection in 23 patierts cot an coverage follow up of almost 9 months and nocomplications.Discussion:Young was the first person to report that the disnormal peripleral menisciwas like discoid, When he was dissecting the corpse and he found that theperipleral meniscal tears occurred more than that of central meniscal trars.Within Chian peripleal meniscal tears occupied 25.3% of total number, centraloccupied 0.5%, In European-American countries, they occupied 1.5% and4.6%.The interpretation and mechanic of the formation of Discoid meniscus arenot clear, But presently believed that it formed by the bad development ofviviparous articular the formulation is inclint to be inherentlycleficient and it issaid to be a hereditary disease.Normal meniscus has corctracted deformability. But when meniscus islike a decoid. It cacldn't deform with the maement of knee arthritic andresulting that the stress centralized and the liquid was distributed. Heacwhile,peripleral decoid meniscus always have higher fibularis head, but thedeulopment of femcoral condyle and the tibial plateau and the decoid meniscicouers the tibial plaeau more and ticher than the normal menisci resulting thetissue failed to undergo complete condensation to its physiological dimensions.It is probably are of the mechanics of the decoid menisci tears. The normalmenisci is completed by the longitudinally oriented collagen fibers andannulated collagen fibes, and it also has axial fibers. Which decoid meniscidoesn't have thefibers in decoid menisci are not in order. This made themeniscus conuert axial load into tensile loads badly expecially when thearthritic moued, it is easily to have meniscus tear.In another in the older person, the meniscus has more degenerativechanges, and even a small strength may make the meniscus tear. The directlesion of the tray-meniscus mostly happen in youth due to the suddermovement of the knee, while the indirect leision often due to the lock-butterappratus.It's easy to diagnose most of the leision of the tray-meniscus, especiallytheâ… type andâ…¡type.We can find the due from the preseat history, thesymptom of the patient such as pain. twist and so so, most of the patients'McMrray sign is pasitive. X-ray examination can give us some insorect signalsand MRI examination can give us a lot of information.The traditional method to treat the leision of the tray-meniscus is open thecapsule and removal the meniscus, but the ending is arthritis. With the moreattention to the function of the meniscus and the improvement of the techniqueof the joint-scope, it has became the gold standard to diagnose the leision ofthe meniscus and to cure it. It has got to a commcn view that the leision of themeniscus should be treated by the joint-scope just to reseve some of meniscus.The methods in common use are the sucture of the meniscus and the shapingof the meniscus(the partial resection). The partial resection with thejoint-scope is the most dassical operationwhich can reseve the normalmeniscus maximally.To resect the damaged meniscus can decrease thesymptom, after the operation, the pationts can have the bed to do someexercise. The method of partial resection is excision littly by little and excisionall of it. During the operation, we can give a judge by McMrray sign, and toreserve the meniscus maximally but the with of the body should under 1cm,and the reserved shape should be dose to the anatomic shape.First auording biomechanic, sucture of the meniscus and the shaping ofthe meniscus has great important affection on the therepy of knee. Modifyzhgthe discoid meniscus to the normal meniscus not only make physiealimovement of discoid meniscus in knee joint disappear, but also annihilate thehorizontal power of the countermovement. Preservation of function oftransmitting leading and reconstruction of biochemic of knee are mastlyimportant, Because it can prevent late rapid deterioration of knee functionoccurring.Second according morphology sucture of the meniscus and the shaping ofthe meniscus rehabilitate morphology of half-moon and normal array of fiberconstruction. After reconstruction meniscus, it can become mostly fromnon-normal array to normal array under physical loading. Femur-Tibia jointbecome more stable, Femur-Tibia surface of touching become more wide andstretching with deformation meniscus. As the reconstruction of meniscusphysical morphology, non anastomosing surface become part anastomosingsurface and fibrell tissue of meniscus because physical arrangementcomplication. There are some disadvantage to knee after arthroscope operation,infection acute hemarthrosis of knee. Osteochondral injury, crueiate ligmentinjury, neve and artery injury. But these complication almost don't occup.Use the arthroscope partly sucture of the meniscus and the shaping of themeniscus have many adiantage, it can make preoperative symptom canexercise afteroperation, and the injury to the knee is very small.Conclusion:As so far as, arthroscope is good measure to cure the injured sucture ofthe meniscus and the shaping of the meniscus. If the ripped meniscus is foundearth, the arthroscope repairs the meniscus and the knee probably catch thecomplete function.