ABSTRACT
<p><b>OBJECTIVE</b>To explore the value of three-dimensional digital reconstruction techniques in the diagnosis and treatment of proximal humeral fractures.</p><p><b>METHODS</b>From January, 2008 to May, 2010, 25 patients with proximal humeral fractures underwent preoperative examinations with conventional X-ray, plain CT scan and 3D-CT scan. Based on the two-dimensional gray-scale CT scan data in DICOM format, personalized virtual fracture models were reconstructed using Amira4.1 software and compared with the conventional imaging examination methods for fracture typing to identify the fracture classification. Personalized surgical treatment was implemented according to the typing of the fractures, and the patients were followed up postoperatively for 8 to 35 months (mean 21 months) for functional evaluation using the Constant-Murley score.</p><p><b>RESULTS</b>In the 25 cases of proximal humeral fractures, plain X-ray examination obtained a clear diagnosis and classification of the fractures in 15 cases, and CT scan, three-dimensional CT, and personalized three-dimensional model reconstruction confirmed the diagnosis and classification in 20, 22, and 25 cases, respectively. The humeral fractures healed generally 6 months after the operation, and the patients showed a Constant-Murley score ranging from 70 to 100 (mean 88).</p><p><b>CONCLUSIONS</b>Preoperative personalized three-dimensional reconstruction of proximal humeral fracture can help obtain a more accurate diagnosis of the fracture type to facilitate the decision on the optimal surgical plan, surgical approach and internal fixation methods.</p>
Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Imaging, Three-Dimensional , Shoulder Fractures , Diagnosis , General Surgery , Signal Processing, Computer-Assisted , SoftwareABSTRACT
【Objective】To observe the effect of acupuncture mainly on cleft points on chemical radiculitis rats and to explore the therapeutic mechanism of acupuncture on lumbar disc prolapse.【Methods】Twenty-four rats with chemical radiculitis were equally randomized into acupuncture group and model group,and another 12 normal rats were in the blank control group.Acupuncture group received acupuncture on acupoints of Jiaji(EX-B2)and Weizhong(BL40)and cleft points of Foot-Shaoyang Meridian and Foot-Taiyang Meridian for 28 days.After treatment,rat behavioral changes and morphological features of nerve cells were observed,the weight of inflammation filter paper was detected,and hemorheologic parameters,nitric oxide (NO) and interleukin 6(IL-6) were assayed.【Results】Acupuncture improved the motor function of affected limb,recovered the senses of pain and tough,improved hemorheologic parameters,reduced the inflammatory reaction,relieved degeneration of nerve root,and decreased the contents of inflammatory factors(P