Objective To evaluate the quality of Chinese literatures on the methodology of D-dimer diagnostic test. Method We searched CNKI (1994 to 2006) and CBM (1978 to 2006) for articles involving the diagnostic tests of D-dimer for coagulation disorders. Result A total of 63 relevant articles were retrieved and 7 were included in our review. Only one of these provided useful data on two two table for the evaluation of diagnostic accuracy. Conclusions Few studies on the diagnostic tests of D-dimer have been performed and publ ished in China, all of poor quality. Further studies should focus on clinical diagnostic sensitivity and specificity, so as to provide more valuable information for readers.
【Abstract】 Objective To determine the three-dimensional stabil ity of atlantoaxial reconstruction withanterior approach screw fixation through C2 vertebral body to C1 lateral mass and Gall ie’s technique (ASMG) for C1,2instabil ity. Methods Twenty-five human cadaveric specimens (C0-3 ) were divided randomly into 5 groups (n=5). Thethree-dimensional ranges of motion C1 relative to C2 were measured under the five different conditions：the intact state group (group A), type II odontoid fracture group (group B), posterior C1,2 transarticular screw fixation group (group C), ASM group (group D) and ASMG group (group E). The three-dimensional ranges of motions C1 relative to C2 by loading ± 1.5 Nm were measured under the six conditions of flexion/extension, left/right lateral bending, and left/right axial rotation. The obtained data was statistically analyzed. Results In each group, the three-dimensional ranges of motion C1 relative to C2 under the six conditions of flexion/extension, left/right lateral bending, and left/right axial rotation were as follows: in group A (8.10 ± 1.08), (8.49 ± 0.82), (4.79 ± 0.47), (4.93 ± 0.34), (28.20 ± 0.64), (29.30 ± 0.84)°; in group B (13.60 ± 1.25), (13.80 ± 0.77), (9.64 ± 0.53), (9.23 ± 0.41), (34.90 ± 0.93), (34.90 ± 1.30)°; in group C (1.62 ± 0.10), (1.90 ± 0.34), (1.25 ± 0.13), (1.37 ± 0.28), (0.97 ± 0.14), (1.01 ± 0.17)°; in group D (2.03 ± 0.26), (2.34 ± 0.49), (1.54 ± 0.22), (1.53 ± 0.30), (0.80 ± 0.35), (0.76 ± 0.30)°; in group E (0.35 ± 0.12), (0.56 ± 0.34), (0.44 ± 0.15), (0.55 ± 0.16), (0.43 ± 0.07), (0.29 ± 0.06)°. Under the six conditions, there were generally significant differences between group A and other four groups, and between group B and groups C, D and E (P lt; 0.001), and between group E and groups C, D in flexion/ extension and left/right lateral bending (P lt; 0.05). There was no significant difference between group E and groups C, D in left/right axial rotation (P gt; 0.05). Conclusion In vivo biomechanical studies show that ASMG operation has unique superiority in the reconstruction of the atlantoaxial stabil ity, especially in controll ing stabil ity of flexion/extension and left/right lateral bending, and thus it ensures successful fusion of the implanted bone. It is arel iable surgical choice for the treatment of the obsolete instabil ity or dislocation of C1, 2 joint.
Objective To evaluate the application value of infrared thermography in breast reconstruction, cosmetic surgery, and limb reconstruction. Methods A retrospective analysis of clinical data from 67 patients undergoing breast reconstruction and cosmetic procedures and 30 patients undergoing limb reconstruction between February 2022 and June 2025. The patients undergoing breast reconstruction and cosmetic surgery were all female, aged 25-60 years with a median age of 48 years. Procedures included breast reconstructions in 48 cases, breast reductions in 8, nipple reconstructions in 5, revision breast reconstructions in 2, revision nipple reconstruction in 1, and labia minora reductions in 3. Among the patients undergoing limb reconstruction, 18 were males and 12 were females, aged 29-62 years with a mean age of 43 years. Procedures included skin flap transplants for wound repair in 10 cases, fracture internal fixation in 17, and limb lengthening reconstructions in 3. An infrared thermography device was applied intraoperatively and within 48 hours postoperatively to monitor flap and distal limb temperature and vascular perfusion. Results Intra- and post-operative infrared thermography assessment indicated 2 positive cases (2.1%, 2/97), comprising 1 false positive. Among the 95 negative cases (97.9%, 95/97), 1 false negative was recorded. After operation, 1 case of immediate breast reconstruction exhibited localized vascular compromise at the edge of the local flap, though infrared detection showed no abnormally low skin temperature. The wound healed with delayed healing following dressing changes. One case of latissimus dorsi myocutaneous flap exhibited persistent infrared hypothermia during transfer. However, the flap demonstrated active dermal hemorrhage and a positive pinch test. Continuous monitoring revealed a subsequent rise in flap temperature, confirming adequate perfusion. The flap survived, with primary wound closure achieved. The postoperative infrared thermal imaging monitoring of the surgical site indicated adequate blood supply with no local ischemic necrosis in other patients. All patients were followed up. The patients undergoing breast reconstruction were followed up 1-30 months, with a median follow-up time of 15 months. The reconstructed breasts and nipples demonstrated good survival. The patients undergoing labia minora reduction were followed 3, 8, and 13 months, respectively. The surgical sites exhibited favorable appearance and blood supply. The patients undergoing limb reconstruction were followed 1-12 months (mean, 7 months). Transplanted flaps showed good survival, and patients with fractures or limb lengthening achieved favorable limb recovery. Conclusion Infrared thermography offers a convenient, non-invasive, and objective supplementary indicator for breast and limb reconstruction. This technology can be used intra- and post-operatively to assess blood supply, thereby aiding surgical decision-making and reducing the risk of postoperative complications. However, attention should be paid to the potential for false positives and false negatives.