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Sun JN, Zhu AX, Shi C, Zhang B, Tang GS, Wang DG, Bing W. Axial and frontal X-ray fluoroscopy technique of the sustentaculum tali can improve the accuracy of sustentacular screw placement. BMC Med Imaging 2022; 22:170. [PMID: 36175879 PMCID: PMC9520795 DOI: 10.1186/s12880-022-00898-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 09/15/2022] [Indexed: 11/10/2022] Open
Abstract
Introduction Calcaneal fractures, especially those involving the articular surface, should be anatomically reduced as much as possible. Fixing the fracture by placing a screw into the sustentaculum tali from the lateral side of the calcaneus is generally considered to be the key to successful surgery. However, due to the limited visibility during surgery, it is not easy to place screws into the sustentaculum tali accurately. The purpose of this study was to explore a new fluoroscopy method for the sustentaculum tali and verify the value of this method in improving screw placement accuracy. Methods In this study, a total of 42 human foot and ankle specimens were dissected and measured. The shape and position of the sustentaculum tali were observed, and the influence of adjacent bones on imaging findings was analysed. The axial and frontal X-ray fluoroscopy method to view the sustentaculum tali was formulated, and the appropriate projection angle through anatomical and image measurements was explored. Thirty specimens were randomly selected for screw placement, and the direction of the screw was dynamically adjusted under the new imaging method. The success rate of sustentacular screw placement was evaluated. Results The anteversion angles of the sustentaculum tali were 30.81 ± 2.21° and 30.68 ± 2.86° by anatomical and imaging measurements, respectively. There was no statistically significant difference in the anteversion angle between the two measurement methods. Harris heel views should be obtained at 30° to identify the sustentaculum tali on axial X-ray images. Frontal X-ray imaging was performed perpendicular to this projection angle. Through frontal and axial X-ray imaging, the position and shape of the sustentaculum tali can be clearly observed, and these factors are seldom affected by adjacent bones. Under the new fluoroscopy method, the screws were placed from the anterior region of the lateral wall of the calcaneus to the sustentaculum tali. A total of 60 screws were placed in the 30 specimens; of these, 54 screws were in good position, 2 screws penetrated the cortical bone, and 4 screws did not enter the sustentaculum tali. The success rate of sustentacular screw placement was 90% (54/60). Conclusions Axial and frontal X-ray images of the sustentaculum tali can clearly show the shape of the structure, which improves sustentacular screw placement accuracy.
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Affiliation(s)
- Jian-Ning Sun
- Department of Orthopedics, Suqian Hospital of Nanjing Drum Tower Hospital Group, Suqian, China.,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Ai-Xiang Zhu
- Department of Orthopedics, Suqian Hospital of Nanjing Drum Tower Hospital Group, Suqian, China.,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Ce Shi
- Department of Orthopedics, Suqian Hospital of Nanjing Drum Tower Hospital Group, Suqian, China.,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Bei Zhang
- Department of Orthopedics, Suqian Hospital of Nanjing Drum Tower Hospital Group, Suqian, China.,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | | | | | - Wang Bing
- Department of Orthopedics, Suqian Hospital of Nanjing Drum Tower Hospital Group, Suqian, China. .,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China.
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Abstract
Displaced intra-articular calcaneal fractures are among the most difficult articular fractures to treat, with a high rate of potential complications. Is important to restore calcaneus posterior facet anatomy as well as calcaneus width, length, and height. The extensile lateral approach provides excellent fracture visualization and allows reduction of the displaced fracture fragments, but high complication rate has been described with this approach, so many studies favor the sinus tarsi approach. Recent evidence favoring sinus tarsi rather than the extensile lateral approach has shifted opinion toward this less invasive approach, which can be considered the new gold standard.
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Affiliation(s)
- Gabriel Khazen
- Hospital de Clinicas Caracas, Av Panteón, San Bernardino, Caracas 01050, Venezuela.
| | - Cesar Khazen Rassi
- Hospital de Clinicas Caracas, Av Panteón, San Bernardino, Caracas 01050, Venezuela
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Wang C, Xu C, Li M, Li H, Xiao H, Zhong D, Liu H. Patient-specific instrument-assisted minimally invasive internal fixation of calcaneal fracture for rapid and accurate execution of a preoperative plan: A retrospective study. BMC Musculoskelet Disord 2020; 21:407. [PMID: 32593302 PMCID: PMC7321547 DOI: 10.1186/s12891-020-03439-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/18/2020] [Indexed: 11/10/2022] Open
Abstract
Background Traditional methods for minimally invasive internal fixation (MIIF) of calcaneal fractures require extensive intraoperative fluoroscopy, and fracture recovery is usually not ideal. We developed a new surgical procedure using digital surgical simulation and constructed a patient-specific instrument (PSI) for calcaneal fracture that we used during the operation. This study investigated whether PSI-assisted MIIF of calcaneal fracture enables rapid and accurate execution of the preoperative plan. Methods We retrospectively analyzed patients with Sanders type III or IV fresh calcaneal fractures who had undergone PSI-assisted MIIF at our hospital from January 2016 to December 2018. We analyzed perioperative data including intraoperative fluoroscopy time, concurrence of internal fixation actual usage (IFAU) with the preoperative plan, surgery time, and complications. We also compared pre- and postoperative actual measurements from X-ray radiographs and computed tomography images including Böhler, Gissane, and calcaneus valgus angles; subtalar joint width; and calcaneal volume overlap ratio with the preoperative design. All patients had been followed up and their American Orthopedic Foot and Ankle Score (AOFAS) score was available. Results Mean intraoperative fluoroscopy time was 3.95 ± 1.78 h; IFAU in 16 patients (16 ft) was the same as the preoperative plan; mean surgery time was 28.16 ± 10.70 min; and none of the patients developed complications. Böhler, Gissane, and calcaneus valgus angles and subtalar joint width did not differ between pre- and postoperative plans; however, the actual preoperative values of each of these parameters differed significantly from those measured postoperatively. The calcaneal volume overlap ratio with the preoperative design was 91.2% ± 2.3%. AOFAS scores increased with time, with significant differences in the score at each time point. Conclusions The newly developed PSI-assisted calcaneal fracture MIIF method can rapidly and accurately execute the preoperative plan.
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Affiliation(s)
- Chenggong Wang
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.,Department of foot and ankle surgery, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Can Xu
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.,Department of foot and ankle surgery, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Mingqing Li
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.,Department of foot and ankle surgery, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Hui Li
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.,Department of foot and ankle surgery, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Han Xiao
- Department of Sports Medicine, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Da Zhong
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Hua Liu
- Department of Orthopedics, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China. .,Department of foot and ankle surgery, Xiangya Hospital Central South University, No.87 Xiangya Road, Changsha, 410008, Hunan, China.
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