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Yao X, Ding P, Wang C, Miao H, Chao Y, Wang J, Hu M, Tang J. Finite element analysis of restoring length with multiple internal fixations in calcaneal body fracture. Sci Rep 2024; 14:23734. [PMID: 39390058 PMCID: PMC11466972 DOI: 10.1038/s41598-024-75267-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 10/03/2024] [Indexed: 10/12/2024] Open
Abstract
Calcaneal body fractures are often associated with varying degrees of shortening deformities. Restoring calcaneal length is crucial for the functional prognosis of the foot. Through finite element analysis, this study compared the biomechanical effects of multiple fixation schemes for calcaneal fractures. We delineated and assembled the finite element model of the Sanders type II calcaneal fracture and four internal fixation simulations (namely distraction screw, lag screw, frame locking plate, and T-shaped locking plate). Different axial forces (350, 700, and 1400 N) were then applied to simulate various postures. We then compared the inner and outer shortening distances (D1 and D2, respectively), equivalent von Mises stress, and maximum von Mises stress of the calcaneus. In the individual model, with an increase in the pressure, D1, D2, and the maximum von Mises stress gradually increased. At 1400 N, D1 and D2 for the internal fixation schemes were as follows: distraction screw (0.03 mm, 0.1 mm) < T-shaped locking plate (0.45 mm, 0.26 mm) < frame locking plate (0.50 mm, 0.26 mm) < lag screw (0.66 mm, 0.64 mm). The maximum von Mises stress values for the internal fixation methods were as follows: lag screw (491.0 MPa) < distraction screw (663.1 MPa) < frame locking plate (772.7 MPa) < T-shaped locking plate (931.8 MPa). In patients with calcaneal body fractures, the distraction screw is a potential therapeutic option for resisting calcaneal shortening.
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Affiliation(s)
- Xiang Yao
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China
| | - Peiqi Ding
- Jiangsu University, Zhenjiang, 212000, Jiangsu, China
- Department of Orthopaedics, The People's Hospital of Danyang, Zhenjiang, 212300, Jiangsu, China
| | - Chong Wang
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China
- Jiangsu University, Zhenjiang, 212000, Jiangsu, China
| | - Han Miao
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China
- Jiangsu University, Zhenjiang, 212000, Jiangsu, China
| | - Yicong Chao
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China
- Jiangsu University, Zhenjiang, 212000, Jiangsu, China
| | - Jiawei Wang
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China.
| | - Minjie Hu
- Department of Orthopaedics, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, China.
| | - Jilei Tang
- Department of Orthopaedics, Qidong Hospital of Traditional Chinese Medicine, Nantong, 226200, Jiangsu, China.
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Li X, Ye L, Wu J, Huang L, Huang J. Minimally Invasive Treatment of Inversion Shortening Calcaneal Fractures in the "Out-In" Position. Orthop Surg 2024; 16:263-268. [PMID: 37814793 PMCID: PMC10782255 DOI: 10.1111/os.13867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 10/11/2023] Open
Abstract
OBJECTIVE Heel fractures need extensive surgical incisions and are challenging to successfully reposition using traditional prying. The goal of this study is to evaluate the clinical effectiveness of using a Kirschner pin-guided distractor to treat inversion shortening calcaneal fractures in the "out-in" position. METHODS A total of 40 data from 37 patients with inversion shortened calcaneal fractures from January 2018 to March 2020 were reviewed. Preoperative lateral and axial X-rays and 3D CT were taken to assess the fracture type, and minimally invasive internal fixation was performed in the "out-in" position with distractor repositioning, and intraoperative and postoperative images were taken to assess fracture repositioning and fixation. During the follow-up period, the postoperative functional recovery status was assessed using the VAS score, AOFAS score, and FAOS score. Paired-samples t-test was used for all data comparisons. RESULTS All cases received a mean follow-up of 28.49 ± 3.25 months, and the mean fracture healing time was 7.84 ± 0.71 weeks. The postoperative images showed well-fixed fracture repositioning, and calcaneal height, length, width, and inversion angles were significantly improved. At the final follow-up, the calcaneal height, length, and width recovered from 39.35 ± 4.44mm, 79.35 ± 2.7mm, and 45.75 ± 2.87mm preoperatively to 50.93 ± 3.18mm, 82.23 ± 1.90mm, and 39.67 ± 1.58mm postoperatively (p < 0.001; p < 0.001; p < 0.001). The calcaneus inversion angle restored from 7.73° ± 2.26° to 3.80° ± 1.80° (p < 0.001). Böhler's angle and Gissane's angle improved from 13.13° ± 3.02° and 105.15° ± 8.94° to 27.95° ± 3.41° and 122.85° ± 5.54° (p < 0.001; p < 0.001). No non-healing fractures, osteomyelitis, or traumatic arthritis were observed. CONCLUSION Minimally invasive internal fixation with distractor repositioning in the "out-in" position is effective in the treatment of inversion shortening calcaneal fractures while restoring the anatomy and protecting the soft tissue.
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Affiliation(s)
- Xu‐Song Li
- Department of Orthopaedics & TraumatologyZhongshan Hospital of Traditional Chinese Medicine (Zhongshan Traditional Chinese Medicine Hospital)ZhongshanChina
| | - Lin Ye
- Grade 2021 GraduateZhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Chinese MedicineZhongshanChina
| | - Jun‐Le Wu
- Graduate schoolGuangzhou University of Chinese MedicineGuangzhouChina
| | - Li‐Ben Huang
- Graduate schoolGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jie‐Feng Huang
- Department of Orthopaedics & TraumatologyThe First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhouChina
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Song G, Gu W, Shi Z, Li X, Fu S, Yu X, Song F. Finite element analyses of three minimally invasive fixation techniques for treating Sanders type II intra-articular calcaneal fractures. J Orthop Surg Res 2023; 18:902. [PMID: 38012759 PMCID: PMC10683123 DOI: 10.1186/s13018-023-04244-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/28/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Calcaneal Sanders type II or III fractures are highly disabling with significant burden. Surgical treatment modalities include open reduction and internal fixation (ORIF) techniques and a variety of minimally invasive surgical (MIS) approaches. ORIF techniques are associated with complications and traditional MIS techniques need extensive intraoperative fluoroscopic procedures. The present study aims to investigate the effects of three different minimally invasive internal fixation (MIIF) techniques used to treat Sanders type II intra-articular calcaneal fractures using finite element analyses. METHODS A 64-row spiral computed tomography scan was used to observe the calcaneus of a healthy adult. The scanning data were imported into Mimics in a DICOM format. Using a new model of a Sanders type II-B intra-articular calcaneal fracture, three minimally invasive techniques were simulated. Technique A involved fixation using an isolated minimally invasive locking plate; Technique B used a minimally invasive locking plate with one medial support screw; and Technique C simulated a screw fixation technique using four 4.0-mm screws. After simulating a 640-N load on the subtalar facet, the maximum displacement and von Mises stress of fragments and implants were recorded to evaluate the biomechanical stability of different fixation techniques using finite element analyses. RESULTS After stress loading, the maximum displacements of the fragments and implants were located at the sustentaculum tali and the tip of sustentaculum tali screw, respectively, in the three techniques; however, among the three techniques, Technique B had better results for displacement of both. The maximum von Mises stress on the fragments was < 56 Mpa, and stress on the implants using the three techniques was less than the yield strength, with Technique C having the least stress. CONCLUSION All three techniques were successful in providing a stable fixation for Sanders type II intra-articular calcaneal fractures, while the minimally invasive calcaneal locking plate with medial support screw fixation approach exhibited greater stability, leading to improved enhancement for the facet fragment; however, screw fixation dispersed the stress more effectively than the other two techniques.
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Affiliation(s)
- Guoxun Song
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China
| | - Wenqi Gu
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China
| | - Zhongmin Shi
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China.
| | - Xueqian Li
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China
| | - Shaoling Fu
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China
| | - Xiaowei Yu
- Department of Orthopaedics, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, People's Republic of China
| | - Facheng Song
- National Key Laboratory for Manufacturing Systems Engineering, Xian Jiaotong University, Xi'an, 710054, Shanxi Province, People's Republic of China.
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Li X, Wang XK, Yu LK, Zhang C, Zhao MM, Yan J, Han LR. 3D simulation of percutaneous sustentaculum tali screw insertion in calcaneal fractures. BMC Musculoskelet Disord 2023; 24:636. [PMID: 37550653 PMCID: PMC10408215 DOI: 10.1186/s12891-023-06748-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND In calcaneal fractures, the percutaneous screw fixation (PSF) is currently considered to be the better choice, but it is difficult to accurately place the screw into the sustentaculum tali (ST) during the operation. In this study, the ideal entry point, angle, diameter and length of the screw were calculated by simulating the operation process. METHODS We retrospectively collected the calcaneus computed tomography (CT) scans of 180 adults, DICOM-formatted CT-scan images of each patient were imported into Mimics software to establish calcaneus model. Virtual screws were placed on the lateral of the posterior talar articular surface (PTAS), the lateral edge of the anterior process of calcaneus (APC), and the calcaneal tuberosity, respectively, the trajectory and size of the screws were calculated. RESULTS The mean maximum diameter of the PTAS screw was 42.20 ± 3.71 mm. The vertical distance between the midpoint of the APC optimal screw trajectory and the lowest point of the tarsal sinus was 10.67 ± 1.84 mm, and the distance between the midpoint of the APC optimal screw trajectory and the calcaneocuboid joint was 5 mm ~ 19.81 ± 2.08 mm. The mean maximum lengths of APC screws was 44.69 ± 4.81 mm, and the Angle between the screw and the coronal plane of the calcaneus from proximal to distal was 4.72°±2.15° to 20.52°±3.77°. The optimal point of the maximum diameter of the calcaneal tuberosity screw was located at the lateral border of the achilles tendon endpoint. The mean maximum diameters of calcaneal tuberosity screws was 4.46 ± 0.85 mm, the mean maximum lengths of screws was 65.31 ± 4.76 mm. We found gender-dependent differences for the mean maximum diameter and the maximum length of the three screws. CONCLUSIONS The study provides effective positioning for percutaneous screw fixation of calcaneal fractures. For safer and more efficient screw placement, we suggest individualised preoperative 3D reconstruction simulations. Further biomechanical studies are needed to verify the function of the screw.
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Affiliation(s)
- Xian Li
- School of Clinical Medicine, Weifang Medical University, Weifang, China
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China
| | - Xiao-Ke Wang
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Lian-Kui Yu
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China
| | - Chao Zhang
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China
| | - Ming-Ming Zhao
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China
| | - Jun Yan
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China.
| | - Li-Ren Han
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng, China.
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Yang M, Wu X. Rapid Development of Orthopaedic Trauma in China. Injury 2023; 54 Suppl 2:S1-S2. [PMID: 37030920 DOI: 10.1016/j.injury.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/10/2023]
Affiliation(s)
- Minghui Yang
- Department of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Peking University Fourth School of Clinical Medicine, Beijing, China
| | - Xinbao Wu
- Department of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Peking University Fourth School of Clinical Medicine, Beijing, China.
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A prospective comparative study between percutaneous cannulated screws and Kirschner wires in treatment of displaced intra-articular calcaneal fractures. INTERNATIONAL ORTHOPAEDICS 2022; 46:2667-2683. [PMID: 35960344 PMCID: PMC9556432 DOI: 10.1007/s00264-022-05521-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/15/2022] [Indexed: 10/26/2022]
Abstract
Abstract
Purpose
Several minimally invasive procedures were used to treat displaced intra-articular calcaneal fractures (DIACFs). No agreement among different authors about either the ideal fixation method or which technique is minimally invasive. The aim of this study was to compare functional and radiographic outcomes of two minimally invasive techniques in treatment of Sanders type II and III DIACFs by using K-wires or cannulated screws without bone grafts.
Methods
A prospective randomized controlled study was conducted on 28 patients (34 feet) with Sanders type II or III DIACFs, treated by closed reduction and fixation using cannulated screws or K-wires, at the Orthopedics Department of Sohag University Hospital, between April 2020 and February 2022. Functional assessment was done by American Orthopedic Foot and Ankle Society (AOFAS) score and VAS for pain. Radiographic assessment was done by measurement of three calcaneal angles (Gissane, Böhler’s, and posterior facet inclination angles) and three calcaneal distances (height, length, and width of the calcaneus).
Results
Mean ages of patients at the time of operation were 34.8 years for the cannulated screw group and 36.6 years for the K-wire group. A vast majority of patients were males (78.6%). Involvement of the right side in the cannulated screw group was 57.1% and that in the K-wire group was 47.9%. Mean operative time was significantly shorter among the K-wire group (42 min) compared to the cannulated screw group (57 min). Mean AOFAS score was higher among the cannulated screw group (85.9 points) compared to the K-wire group (75.8 points). Final VAS was significantly better among the cannulated screw group compared to the K-wire group. Mean time of radiographic union in the cannulated screw group was 8.9 weeks and that in the K-wire group was 10.1 weeks.
Conclusion
Both techniques avoided wound complications associated with ORIF with the advantage of a shorter hospital stay. Patients in the cannulated screw group had better functional and radiographic outcomes and a lower rate of subtalar arthritis than patients in the K-wire group. K-wires had advantages of reduced operative time, and easy removal as an outpatient procedure.
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