6 results about "Avulsion fracture" patented technology

There is provided a method of diagnosis comprising providing a sample previously isolated from a subject and analysing the sample for presence of a peptide comprising the amino acid sequence N- terminal-KSSTG (SEQ ID NO 1). The diagnosis may be for example diagnosis of a disease is selected from: osteoarthritis, early stage osteoarthritis, moderate osteoarthritis, osteoarthritis associated with risk for chip fractures of the joint or risk for avulsion fractures, severe osteoarthritis, microfractures of the joints, avulsion fractures and chip fractures of the joint.

This invention provides a wire traction assembly for treating phalanx avulsion fractures, relating to the field of biomedical engineering technology. The wire traction assembly for treating phalanx avulsion fractures includes: a sleeve having a first end, a bent portion, and a second end; an insertion hole on the first end and a threading hole on the second end; a Kirschner wire for insertion into the insertion hole; and a tension band wire for attachment to the threading hole. This application achieves reliable wire fixation through direct attachment of the tension band wire to the threading hole, rather than by hanging it on the bent end of the Kirschner wire as in traditional techniques. Because the threading hole is a completely closed structure, the tension band wire cannot slip out of the hole under stress, effectively avoiding the risk of the wire slipping off at the smooth end of the needle in traditional techniques.

The invention relates to the technical field of orthopedic surgical instruments, and discloses a protector for preventing posterior fork dead center avulsion fracture, the protector comprises an osteotomy guider and a chisel, the osteotomy guider is provided with a detachably matched fixing part, the fixing part is provided with a guide plate detachably connected with the fixing part, the guide plate is provided with a guide structure, and the chisel is provided with a guide groove. The detachable fixing component and the pre-bendable guide plate are matched with the chisel, a protective guide structure matched with the osteotomy guider is created, the guide inclined plane accurately limits the chisel track, posterior cruciate ligaments are prevented from being damaged, and the osteotomy guider is simple in structure, convenient to use and high in practicability. The guide plate is attached to the personalized bone surface of a patient through the deformation groove, stable assembly and no interference are guaranteed through the positioning groove and the receding groove, the cut-off groove can be flexibly excavated before and after bone block cutting, segmented chiseling and cutting are matched with the irregular bone surface to form a complete groove body, stress conduction is effectively blocked, and the rear fork stop point avulsion fracture is fundamentally prevented.

The application discloses a surgical method for the reduction and fixation of a posterior cruciate ligament tibial insertion avulsion fracture under the guidance of ultrasound, and is especially suitable for the reduction treatment of a posterior cruciate ligament tibial insertion avulsion fracture. The surgical method comprises the following steps: acquiring fracture information of a patient by means of an ultrasonic positioning device, wherein the fracture information at least comprises position information of a fracture block; planning a surgical path according to the fracture information, wherein the surgical path extends from the body surface of the patient to the fracture block; placing a guide needle along the surgical path, wherein the distal end of the guide needle is arranged close to the fracture block; placing a cannula device along the guide needle, wherein the distal end of the cannula device is arranged close to the fracture block, a working channel is formed in the cannula device, and the guide needle is accommodated in the working channel; performing a reduction operation on the fracture block; making a kirschner wire pass through the working channel and temporarily position the fracture block; opening at least two bone tunnels in a main bone adjacent to the fracture block by means of a drilling device; making a suture thread pass through the at least two bone tunnels; and fixing the two ends of the suture thread.

The invention discloses a fixing device for posterior cruciate ligament avulsion fracture, which comprises a fixing plate main body, the fixing plate main body is integrally formed by a far end, a middle end and a near end, the near end is provided with a locking screw hole I, the near end is provided with two wire passing grooves, the bottom of each wire passing groove is internally connected with a vertical column, the vertical column is provided with an annular winding groove, and the annular winding groove is provided with a locking screw hole II; the stand column is in threaded connection with a pressing cap through an external thread, the pressing cap comprises a straight section and an external expansion section, a gap is formed between the inner wall of the external expansion section and the lower edge of the outermost end of the annular winding groove, and two threading grooves are formed in the bottom of the external expansion section; a plurality of second locking screw holes are formed in the middle end and the far end. The fixing plate body can be bent on site according to the actual condition of a patient, so that the fixing plate body can be better attached to the tibial tuberosity, and the adhesive force is increased through the rough surface; the sewing rope can be pressed on the stand column through the pressing cap, and the sewing rope at the sewing position is prevented from being loosened when the two ends of the sewing rope are knotted.

The utility model discloses a medical inner bone fracture plate for avulsion fracture of a proximal tibia posterior cruciate ligament. The device comprises a straight part and a hook part, the straight part is an arc-shaped plate formed by cutting a tubular plate, the radian of the straight part is smaller than 90 degrees, and the straight part is bent with the radian adaptive to the shape of the rear wall of the upper end of the tibia; the joint of the straight part and the hook part is in arc transition; the bent hook part and the straight part are integrally arranged, the bent hook part is bent towards the inner arc surface of the straight part in an arc shape adaptive to the rear edge of the upper end of the tibia, the bent hook part comprises two claw parts, the tail ends of the two claw parts are sharp, the joint of the two claw parts is an arc transition surface, and the radian of the arc transition surface is 180-250 degrees; and a plurality of screw holes are formed in the straight part. According to the internal bone fracture plate, stress concentration can be reduced, a stable structure is formed, and the internal bone fracture plate can be rapidly and accurately positioned when placed.