Lateral Anatomical Locking Plate for Tibiotalar Calcaneal Joint Fusion
A tibiotalar-calcaneal and joint technology, applied in the direction of outer plate, fixator, internal bone synthesis, etc., can solve the problems that the screw holes cannot fully meet the clinical needs, large space, and do not conform to the anatomical shape of the tibia-talus-calcaneus, etc., to achieve The effect of reducing local soft tissue tension, reasonable spatial arrangement, and reliable fixation strength
Active Publication Date: 2015-09-16
SHANGHAI SIXTH PEOPLES HOSPITAL
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Problems solved by technology
[0004] However, some traditional steel plates are not specially designed for tibial-talar-calcaneal arthrodesis, so they do not conform to the anatomical shape of the tibial-talar-calcaneal lateral side, occupy a large space, and need to be pre-bent during the operation, while fixing the screw holes The design cannot fully meet the clinical needs
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[0023] The present invention will be explained in detail below in conjunction with the accompanying drawings.
[0024] Based on the X-ray and CT measurements of the anatomical shape of the distal end of the tibia-talus-calcaneus and the relevant data of other foreign scholars' studies, it can be concluded that:
[0025] 1. The distal tibia and the lateral surface of the talus are relatively smooth. The lateral surface of the talus and the lateral malleolus protrude laterally below the joint. Calcaneal axis and tibiotalar axis have a certain bending angle in the coronal position;
[0026] 2. There are three groups of calcaneus bone trabecular development: running obliquely from the rear of the subtalar joint, distributing along the lower part of the calcaneus, and extending forward from the heel tubercle. There is an area of osteoporosis between the three groups of bone trabeculae, which is located in the center of the anterior part of the calcaneus, and some patients even ...
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The invention provides a tibia-astragalus-calcaneus joint fusion outer side dissection locking steel plate, which comprises a plate-shaped tibia fixing part, an astragalus fixing part and a calcaneus fixing part, wherein the tibia fixing part, the astragalus fixing part and the calcaneus fixing part are fixedly connected in sequence; the astragalus fixing part and the calcaneus fixing part are bent into arc forms along the width direction of the tibia fixing part; an angle of 125-135 degrees is formed between the calcaneus fixing part and the tibia fixing part; the length of the astragalus fixing part is 2.5-3 centimeters; the length of the calcaneus fixing part is 4-5 centimeters; and the tibia fixing part, the astragalus fixing part and the calcaneus fixing part are provided with at least one steel nail fixing hole. The tibia-astragalus-calcaneus joint fusion outer side dissection locking steel plate provided by the invention is more consistent with the outer side dissection state of a tibia-astragalus-calcaneus joint, and is jointed with the distal end of the tibia as well as the surfaces of outer side skeletons of the astragalus and calcaneus; moreover, the space arrangement of screw holes is more reasonable, the steel plate is easier and more convenient to use, and the fixing strength is higher; and the steel plate has the advantages of convenience in surgical operation, reliable fixing strength, reduction in local soft tissue tension and the like.
Description
technical field [0001] The invention relates to an anatomical locking steel plate, in particular to an anatomical locking steel plate for tibiotalareal joint fusion lateral side. Background technique [0002] As important components of the ankle-hindfoot complex, the tibiotalar joint and subtalar joint undertake the functions of maintaining weight-bearing of the lower limbs, walking and maintaining normal range of motion of the ankle. Trauma to the ankle or hindfoot, developmental disorders, and chronic tendon dysfunction may cause secondary tibiotalar and subtalar joint lesions, causing severe pain, deformity, and walking dysfunction, and conservative treatment cannot achieve satisfactory results For patients, surgical treatment can better relieve pain and restore function. Although some scholars have proposed the combination of tibiotalar joint replacement and subtalar joint fusion surgery to treat this disease, the operation is complicated and the long-term efficacy is u...
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IPC IPC(8): A61B17/80
Inventor 张弛施忠民
Owner SHANGHAI SIXTH PEOPLES HOSPITAL
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