An adjustable bone plate for restoring the line of force of lower limbs after tibial osteotomy

Abstract

The invention relates to an adjusting bone plate for restoring limb alignment after osteotomy of tibia and belongs to the technical field of orthopedic medical instruments. The adjusting bone plate isused for adjusting the limb alignment after osteotomy of the tibia. The technical scheme is that the bone plate is a rectangular steel plate, and the two ends of the bone plate are provided with fixing screw holes respectively, the middle of the bone plate is provided with clamping groove holes for placing distracted pieces, the two distracted pieces are placed in the clamping groove holes respectively, the length direction of the two distracted pieces is perpendicular to the plane of the bone plate, the lower portions of the two distracted pieces are located below the plate surface of the bone plate, the cross section of a distracting rotating shaft is oval or is in a symmetrical unequal-diameter shape, the lower portion of the distracting rotating shaft is placed between the opposite plate surfaces of the two distracted pieces, and the upper end of the distracting rotating shaft is provided with a hexagonal nut. The adjusting bone plate can precisely adjust the distracting degree ofthe osteotomy part after the osteotomy, so that the tibia joint plane and the limb alignment recover to an ideal position, the osteotomy part can be fixed firmly, the osteotomy part stability is maintained, and the operation quality and success rate are enhanced.

Description

technical field [0001] The invention relates to a bone plate used for adjusting the line of force of lower limbs after tibial osteotomy due to knee osteoarthritis, and belongs to the technical field of orthopedic medical devices. Background technique [0002] Knee osteoarthritis is the most common joint disease in the elderly, and it is also the main cause of lower limb disability in the elderly, which seriously affects the daily activities and quality of life of the elderly. Knee osteoarthritis refers to a chronic bone and joint disease caused by cartilage degeneration and bone hyperplasia in the knee joint. Clinically, it is mainly manifested as knee joint pain and dysfunction of varying degrees, and some joint swelling and effusion , X-ray showed narrowing of the joint space, osteophyte formation at the joint margin, subchondral bone sclerosis and cystic degeneration. About 60% of people over the age of 55 have knee osteoarthritis on X-ray films, and 35%-50% of them have...

AI Technical Summary

Problems solved by technology

The filling plugs in the middle of the current bone plate are all fixed in height, and it is difficult to make fine adjustments during the operation, which will cause poor correction of the force line and poor postoperative effect

So far, because there is no device that can fine-tune the distraction of the osteotomy site during operation, it directly affects the operation of restoring the joint plane and lower limb force line to the ideal position. Therefore, it is very necessary to design a device that can accurately adjust the osteotomy. Bone part distraction device to ensure satisfactory results of surgery

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