{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T18:24:14Z","timestamp":1789496654747,"version":"build-2803163510"},"reference-count":18,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,5,23]],"date-time":"2019-05-23T00:00:00Z","timestamp":1558569600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To evaluate the bi\u2010planar robot navigation system for insertion of cannulated screws in femoral neck fractures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Between January 2016 and December 2016, 60 patients with femoral neck fractures were separately treated using percutaneous cannulated screws assisted by the bi\u2010planar robot navigation system (robot group) and conventional freehand surgery (freehand group). The fluoroscopy time, the number of drilling attempts, and the operation time were recorded during operations; the dispersion and parallelism of the cannulated screws on the posteroanterior and lateral images were measured after operations. Patients were followed up for 12\u201324\u2009months and the Harris scores and the final results of the two groups were compared.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      During bi\u2010planar robot navigation system\u2010assisted surgery, the fluoroscopy time for acquisition of images was 2.3\u2009seconds on average, and the time for planning screws during the operation was 2.8\u2009min on average. The average fluoroscopy time during the placement of the guide pin was 5.7\u2009seconds and 14.14\u2009seconds (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.00), respectively. The average time of the placement of the cannulated screws was 12.7\u2009min and 19.4\u2009min (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.00), respectively, in the robot group and the freehand group. In the robot group, only one guide pin was replaced during the operation, and the average number of adjustments for each guide pin was 2.39 in the freehand group. The screw parallelism and dispersion measured by postoperative imaging in the robot group were significantly superior to those in the freehand group. From postoperative CT it was evident that there were 5 cases of screws exiting the posterior cortex in both groups. During the follow\u2010up phase, 1 case of femoral head necrosis and 5 cases of femoral neck shortening of more than 10 mm occurred in the robotic navigation group; 3 cases of femoral head necrosis, 1 case of fracture nonunion, and 2 cases of shortening of more than 10\u2009mm occurred in the freehand group. At 18\u2009months after surgery, the average Harris scores of the patients were 85.20 and 83.45, respectively, with no significant difference.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Using bi\u2010planar robot navigation system\u2010assisted placement of femoral neck cannulated screws can significantly reduce the time of intraoperative fluoroscopy, drilling attempts, and operation time. The placed screws are superior to the screws placed freehand in relation to parallelism and dispersion. However, it is still necessary for surgeons to have a good reduction of the femoral neck fracture before surgery and to be proficient in the operation of the robot navigation system. In summary, the bi\u2010planar robot navigation system is an effective assistant instrument for surgery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/os.12450","type":"journal-article","created":{"date-parts":[[2019,5,24]],"date-time":"2019-05-24T00:14:26Z","timestamp":1558656866000},"page":"373-379","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":45,"title":["Evaluation of a Bi\u2010Planar Robot Navigation System for Insertion of Cannulated Screws in Femoral Neck Fractures"],"prefix":"10.1111","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5772-6406","authenticated-orcid":false,"given":"Meng","family":"He","sequence":"first","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chun\u2010peng","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong\u2010gang","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin\u2010bao","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun\u2010qiang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Trauma Orthopaedics Beijing Jishuitan Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,5,23]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/TA.0b013e3181c428ce"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.39399.456551.25"},{"key":"e_1_2_6_4_1","first-page":"701","article-title":"Factors affecting the stability of screws in human cortical osteoporotic bone \u2013 A cadaver study","volume":"89","author":"Thiele OC","year":"2007","journal-title":"Bone Joint J"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2014.10.010"},{"key":"e_1_2_6_6_1","doi-asserted-by":"crossref","first-page":"1173","DOI":"10.3928\/0147-7447-19981101-04","article-title":"Femoral 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fractures: a comparison of bi\u2010planar robot navigation with optoelectronic navigation in a Synbone hip model trial","volume":"124","author":"Wang JQ","year":"2011","journal-title":"Chin Med J"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.4103\/0366-6999.217080"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-012-1496-7"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.E.00137"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2004.05.005"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.82B5.10426"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1097\/BOT.0000000000000239"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2014.11.013"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.90B11.20582"}],"container-title":["Orthopaedic 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