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Gan Y.,Kunming General Hospital of Chengdu Military Command of PLA | Ding J.,Kunming General Hospital of Chengdu Military Command of PLA | Xu Y.,Kunming General Hospital of Chengdu Military Command of PLA | Hou C.,Shanghai University
International Journal of Clinical and Experimental Medicine | Year: 2015

This study develops and validates a novel patient-specific navigational template for total knee arthroplasty (TKA). A total of 70 patients who underwent TKA were randomized and divided into conventional method group and navigational template group. In the navigational template group, the patient-specific navigational templates were designed and used intraoperatively to assist 35 patients with knee arthroplasty. Information on operation time and blood loss was recorded. After surgery, the positions of the prosthesis were evaluated using CT scan and X-rays. Analysis showed significant differences in errors between the two techniques. In addition, mean operation time and mean blood loss were statistically and significantly lower in the navigational template group than in the conventional group. Overall, the navigational template method showed a high degree of accuracy and efficacy. © 2015, E-Century Publishing Corporation. All rights reserved. Source


Sha Y.,Kunming General Hospital of Chengdu Military Command of PLA | Tang H.,Kunming General Hospital of Chengdu Military Command of PLA | Ding J.,Kunming General Hospital of Chengdu Military Command of PLA | Xu Y.-Q.,Kunming General Hospital of Chengdu Military Command of PLA | And 3 more authors.
Chinese Journal of Tissue Engineering Research | Year: 2014

BACKGROUND: There is little evidence on the use of allogeneic tendon graft in the reconstruction of ankle joint. OBJECTIVE: To explore the clinical outcome of anatomical reconstruction of the lateral ligaments with cryopreserved allogeneic tendon graft in patients with chronic ankle instability. METHODS: Twenty-six patients with chronic lateral instability underwent anatomical reconstruction of the lateral ligaments with cryopreserved allogeneic tendon. There were 18 cases of simultaneous injury or chalasia in calcaneofibular ligament and anterior talofibular ligament, and 8 cases of anterior talofibular ligament injury or chalasia. The ankle joint function was evaluated according to AOFAS scale and Good classification. The affect ankle and healthy ankle were compared in the extension, plantar flexion activity, and metaleg activity. RESULTS AND CONCLUSION: All the 26 patients were followed up for 9-24 months with a mean of 15 months. No cases appeared recurrent ankle lateral instability. The mean AOFAS score in the group of calcaneofibular ligament and anterior talofibular ligament was improved from (48. 4±3. 7) points preoperatively to (88. 2±3. 8) postoperatively, while that in the group of anterior talofibular ligament was improved from (50. 0±6. 4) points preoperatively to (89. 5±3. 4) points postoperatively. According to Good score, there were excellent in 19 feet, good in 6 feet, fair in 1 foot, with an excellent and good rate up to 96%. No serious complication was occurred in this group. Anatomical reconstruction of the lateral ligaments with cryopreserved allogeneic tendon graft can increase the tendon-bone contact area, improve the rate of tendon healing, and enhance the stability of ankle joint in patients with chronic ankle instability. Further studies are needed to verify its long-term efficacy. Source

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