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Femur Quadrizeps Sehnenverschluss Versagen nach totaler KniearthroplastikJune 13, ; Accepted date: July 11, ; Published date: Orthop Muscular Syst 6: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in best steroid for tendon strength medium, provided the original stedoid and source are credited. Die Unterbrechung des Streckmechanismus nach der Knieendoprothetik ist selten.
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June 13, ; Accepted date: July 11, ; Published date: Orthop Muscular Syst 6: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Die Unterbrechung des Streckmechanismus nach der Knieendoprothetik ist selten. Die Störung des Streckmechanismus kann entweder intraoperativ oder postoperativ auftreten.
Wir präsentieren unseren ersten Fall eines Femur-Quadrizeps-Sehnen-Verschlussversagens bei einem medialen parapatellaren Zugang. Eine ist ungenügende Nähte beim Verschluss des medialen parapatellaren Zugangs. Die andere könnte die Wirkung einer lokalen periartikulären Injektion sein. Eine zerrissene Sehne wurde aufgefrischt und mit schweren nichtabsorbierbaren Nähten fest durchgeführt.
Eine erfolgreiche Reparatur wurde erhalten. Many complications after total knee arthroplasty TKA have been reported. Extensor mechanism disruption is rare and sometimes reported as a complication in revision TKA [ 1 - 3 ].
The extensor mechanism includes the femoral quadriceps tendon, the patella, the patellar tendon, and the tibial tubercles. It has been reported that extensor rupture occurs in 0. The rupture can occur either intraoperatively or postoperatively. The division of arteries during TKA can exacerbate the compromise to the blood supply and weaken the extensor mechanism.
We present our first case of a femoral quadriceps tendon closure failure in a medial parapatellar approach. A year-old man presented with severe right knee pain and gait disturbance. The patient had right TKA 6 years ago. After the operation, there had been no symptoms.
He had mild pain in the left knee 1 year ago. The pain worsened, and therefore, he came to our department to undergo left TKA. As for the physical findings, swelling and tenderness were observed on the left side. The patellofemoral joint had no problems. There was no significant muscle weakness of the lower limbs. The patella was not replaced. To prevent severe pain after the operation, a local periarticular injection was performed. After the operation, ROM exercise and partial weight bearing were started.
However, swelling and fluctuation above the patella of the right knee was observed. We considered these symptoms to be due to subcutaneous bleeding. Puncture to part of the fluctuation was performed. Blood effusion was drained; however, symptoms got worse. It was suggested that soft tissue closure failure had occurred.
A reoperation was performed. In the operative findings, the femoral quadriceps tendon in the medial parapatellar approach was torn and had failed to be closed. After the operation, a knee brace was put on the right leg for 2 weeks. ROM exercise and partial weight bearing were started. MRI revealed repair of soft tissue closure in the femoral quadriceps tendon Figure 3.
Post-operative MRI at 2 months showing the failure of closure in femoral quadriceps tendon portion. A Coronal T2-weighted image. B Axial T2-weighted image. Extensor mechanism disruption is rare and causes a deficit of active knee extension as well as impaired knee function.
The extensor mechanism includes the quadriceps tendon , the patella, the patellar tendon, and the tibial tubercles. Quadriceps tendon rupture results from a traumatic episode. It has been reported that there are many etiological factors contributing to the disruption after TKA.
Dobbs reported that the arthrotomy used to expose the joint in patients undergoing TKA could in fact impair the blood supply to the tendon [ 5 ]. Parker reported that component misalignment or joint-line elevation can result in impinging of the tendon, predisposing it to a partial or total tear [ 7 ].
We reported a femoral quadriceps tendon closure failure in a medial parapatellar approach. We have never before experienced a closure failure of the femoral quadriceps tendon. It is necessary to select the best surgical option for the closure of the femoral quadriceps tendon.
The quality of the remaining tendon and the integrity of the surrounding soft tissue are very important. Pagnano reported that augmentation of the repair with different grafts might enhance the healing process and strengthen the repaired structure in cases where the injured tissue has retracted because of degenerative processes [ 8 ]. In this case, the injured tissue had relatively good blood supply 2 months after TKA. As the tear pattern was longitudinal along the medial parapatellar approach, the suture repair showed a good outcome.
We suggest two possible causes of the closure failure of the femoral quadriceps tendon. One is that insufficient sutures were used in the closure of the medial parapatellar approach. The other might be the effect of the local periarticular injection. Vashiya and Koh reported that local infiltration analgesia reduced pain, and that no major complications occurred [ 9 , 10 ]. Mirzai and Glasser reported that corticosteroids decrease post-surgical pain by reducing the production of prostaglandins and increasing vasodilation when injected directly into the surgical wound [ 11 , 12 ].
Local periarticular injection has begun to be used in our hospital since one year ago. In the current case, the analgesic solution was directly injected into the quadriceps tendon due to fear of bleeding from the tendon.
Whether the analgesic solution should be injected into the extensor mechanism is controversial. Chia reported that there is a risk of delayed tendon rupture by injecting the extensor mechanism [ 13 ]. Direct injection into the quadriceps tendon might prevent healing of the sutures in the femoral quadriceps tendon.
Now the analgesic solution is not directly injected into the quadriceps tendon. Publikationen Konferenzen Registrieren Kontakt. Aktuelle Forschung Offener Zugang. July 20, Citation: Postoperative radiograph showing TKA. Post-reoperative MRI at 3 months axial T2-weighted image. Agri, Nahrung, Aqua u.
Femur Quadrizeps Sehnenverschluss Versagen nach totaler Kniearthroplastik | OMICS International
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