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Chan HHL, Nayak P, Alshaygy I, Gundle KR, Tsoi K, Daly MJ, Irish JC, Ferguson PC, Wunder JS. Does Freehand, Patient-specific Instrumentation or Surgical Navigation Perform Better for Allograft Reconstruction After Tumor Resection? A Preclinical Synthetic Bone Study. Clin Orthop Relat Res 2024:00003086-990000000-01620. [PMID: 38813958 DOI: 10.1097/corr.0000000000003116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 04/12/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Joint-sparing resection of periarticular bone tumors can be challenging because of complex geometry. Successful reconstruction of periarticular bone defects after tumor resection is often performed with structural allografts to allow for joint preservation. However, achieving a size-matched allograft to fill the defect can be challenging because allograft sizes vary, they do not always match a patient's anatomy, and cutting the allograft to perfectly fit the defect is demanding. QUESTIONS/PURPOSES (1) Is there a difference in mental workload among the freehand, patient-specific instrumentation, and surgical navigation approaches? (2) Is there a difference in conformance (quantitative measure of deviation from the ideal bone graft), elapsed time during reconstruction, and qualitative assessment of goodness-of-fit of the allograft reconstruction among the approaches? METHODS Seven surgeons used three modalities in the same order (freehand, patient-specific instrumentation, and surgical navigation) to fashion synthetic bone to reconstruct a standardized bone defect. National Aeronautics and Space Administration (NASA) mental task load index questionnaires and procedure time were captured. Cone-beam CT images of the shaped allografts were used to measure conformance (quantitative measure of deviation from the ideal bone graft) to a computer-generated ideal bone graft model. Six additional (senior) surgeons blinded to modality scored the quality of fit of the allografts into the standardized tumor defect using a 10-point Likert scale. We measured conformance using the root-mean-square metric in mm and used ANOVA for multipaired comparisons (p < 0.05 was significant). RESULTS There was no difference in mental NASA total task load scores among the freehand, patient-specific instrumentation, and surgical navigation techniques. We found no difference in conformance root-mean-square values (mean ± SD) between surgical navigation (2 ± 0 mm; mean values have been rounded to whole numbers) and patient-specific instrumentation (2 ± 1 mm), but both showed a small improvement compared with the freehand approach (3 ± 1 mm). For freehand versus surgical navigation, the mean difference was 1 mm (95% confidence interval [CI] 0.5 to 1.1; p = 0.01). For freehand versus patient-specific instrumentation, the mean difference was 1 mm (95% CI -0.1 to 0.9; p = 0.02). For patient-specific instrumentation versus surgical navigation, the mean difference was 0 mm (95% CI -0.5 to 0.2; p = 0.82). In evaluating the goodness of fit of the shaped grafts, we found no clinically important difference between surgical navigation (median [IQR] 7 [6 to 8]) and patient-specific instrumentation (median 6 [5 to 7.8]), although both techniques had higher scores than the freehand technique did (median 3 [2 to 4]). For freehand versus surgical navigation, the difference of medians was 4 (p < 0.001). For freehand versus patient-specific instrumentation, the difference of medians was 3 (p < 0.001). For patient-specific instrumentation versus surgical navigation, the difference of medians was 1 (p = 0.03). The mean ± procedural times for freehand was 16 ± 10 minutes, patient-specific instrumentation was 14 ± 9 minutes, and surgical navigation techniques was 24 ± 8 minutes. We found no differences in procedures times across three shaping modalities (freehand versus patient-specific instrumentation: mean difference 2 minutes [95% CI 0 to 7]; p = 0.92; freehand versus surgical navigation: mean difference 8 minutes [95% CI 0 to 20]; p = 0.23; patient-specific instrumentation versus surgical navigation: mean difference 10 minutes [95% CI 1 to 19]; p = 0.12). CONCLUSION Based on surgical simulation to reconstruct a standardized periarticular bone defect after tumor resection, we found a possible small advantage to surgical navigation over patient-specific instrumentation based on qualitative fit, but both techniques provided slightly better conformance of the shaped graft for fit into the standardized post-tumor resection bone defect than the freehand technique did. To determine whether these differences are clinically meaningful requires further study. The surgical navigation system presented here is a product of laboratory research development, and although not ready to be widely deployed for clinical practice, it is currently being used in a research operating room setting for patient care. This new technology is associated with a learning curve, capital costs, and potential risk. The reported preliminary results are based on a preclinical synthetic bone tumor study, which is not as realistic as actual surgical scenarios. CLINICAL RELEVANCE Surgical navigation systems are an emerging technology in orthopaedic and reconstruction surgery, and understanding their capabilities and limitations is paramount for clinical practice. Given our preliminary findings in a small cohort study with one scenario of standardized synthetic periarticular bone tumor defects, future investigations should include different surgical scenarios using allograft and cadaveric specimens in a more realistic surgical setting.
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Affiliation(s)
- Harley H L Chan
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- TECHNA Institute, Guided Therapeutics (GTx) Program, University Health Network, Toronto, Ontario, Canada
| | - Prakash Nayak
- Department of Surgical Oncology, Tata Memorial Hospital, Homi Bhabha National Institute, Parel, Mumbai, India
| | - Ibrahim Alshaygy
- Department of Orthopaedics, College of Medicine, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Kenneth R Gundle
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR, USA
| | - Kim Tsoi
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University of Toronto Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada
| | - Michael J Daly
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- TECHNA Institute, Guided Therapeutics (GTx) Program, University Health Network, Toronto, Ontario, Canada
| | - Jonathan C Irish
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
- TECHNA Institute, Guided Therapeutics (GTx) Program, University Health Network, Toronto, Ontario, Canada
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada
- Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Peter C Ferguson
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University of Toronto Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada
| | - Jay S Wunder
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University of Toronto Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada
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Whitaker J, Are T, Edwards C, Nyland J, Sachdeva S, Carlson J, Zamora R. Computerized surgical navigation resection of pelvic region simulated bone tumors using skin fiducial marker registration: an in vitro cadaveric study. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024:10.1007/s00590-024-03978-8. [PMID: 38743103 DOI: 10.1007/s00590-024-03978-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024]
Abstract
INTRODUCTION Computerized surgical navigation system guidance can improve bone tumor surgical resection accuracy. This study compared the 10-mm planned resection margin agreement between simulated pelvic-region bone tumors (SPBT) resected using either skin fiducial markers or Kirschner (K)-wires inserted directly into osseous landmarks with navigational system registration under direct observation. We hypothesized that skin fiducial markers would display similar resection margin accuracy. METHODS Six cadaveric pelvises had one SPBT implanted into each supra-acetabular region. At the left hemi-pelvis, the skin fiducial marker group had guidance from markers placed over the pubic tubercle, the anterior superior iliac spine, the central and more posterior iliac crest, and the greater trochanter (5 markers). At the right hemi-pelvis, the K-wire group had guidance from 1.4-mm-diameter wires inserted into the pubic tubercle, and 3 inserted along the iliac crest (4 K-wires). The senior author, a fellowship-trained surgeon performed "en bloc" SPBT resections. The primary investigator, blinded to group assignment, measured actual resection margins. RESULTS Twenty of 22 resection margins (91%) in the skin fiducial marker group were within the Bland-Altman plot 95% confidence interval for actual-planned margin mean difference (mean = -0.23 mm; 95% confidence intervals = 2.8 mm, - 3.3 mm). Twenty-one of 22 resection margins (95%) in the K-wire group were within the 95% confidence interval of actual-planned margin mean difference (mean = 0.26 mm; 95% confidence intervals = 1.7 mm, - 1.1 mm). CONCLUSION Pelvic bone tumor resection with navigational guidance from skin fiducial markers placed over osseous landmarks provided similar accuracy to K-wires inserted into osseous landmarks. Further in vitro studies with different SPBT dimensions/locations and clinical studies will better delineate use efficacy.
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Affiliation(s)
- John Whitaker
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
| | - Tolani Are
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
| | - Campbell Edwards
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
| | - John Nyland
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
- Norton Orthopedic Institute, Louisville, USA
| | - Shikha Sachdeva
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
| | - Jon Carlson
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA
| | - Rodolfo Zamora
- Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA.
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Dai J, Liu T, Torigian DA, Tong Y, Han S, Nie P, Zhang J, Li R, Xie F, Udupa JK. GA-Net: A geographical attention neural network for the segmentation of body torso tissue composition. Med Image Anal 2024; 91:102987. [PMID: 37837691 PMCID: PMC10841506 DOI: 10.1016/j.media.2023.102987] [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: 10/25/2022] [Revised: 07/27/2023] [Accepted: 09/28/2023] [Indexed: 10/16/2023]
Abstract
PURPOSE Body composition analysis (BCA) of the body torso plays a vital role in the study of physical health and pathology and provides biomarkers that facilitate the diagnosis and treatment of many diseases, such as type 2 diabetes mellitus, cardiovascular disease, obstructive sleep apnea, and osteoarthritis. In this work, we propose a body composition tissue segmentation method that can automatically delineate those key tissues, including subcutaneous adipose tissue, skeleton, skeletal muscle tissue, and visceral adipose tissue, on positron emission tomography/computed tomography scans of the body torso. METHODS To provide appropriate and precise semantic and spatial information that is strongly related to body composition tissues for the deep neural network, first we introduce a new concept of the body area and integrate it into our proposed segmentation network called Geographical Attention Network (GA-Net). The body areas are defined following anatomical principles such that the whole body torso region is partitioned into three non-overlapping body areas. Each body composition tissue of interest is fully contained in exactly one specific minimal body area. Secondly, the proposed GA-Net has a novel dual-decoder schema that is composed of a tissue decoder and an area decoder. The tissue decoder segments the body composition tissues, while the area decoder segments the body areas as an auxiliary task. The features of body areas and body composition tissues are fused through a soft attention mechanism to gain geographical attention relevant to the body tissues. Thirdly, we propose a body composition tissue annotation approach that takes the body area labels as the region of interest, which significantly improves the reproducibility, precision, and efficiency of delineating body composition tissues. RESULTS Our evaluations on 50 low-dose unenhanced CT images indicate that GA-Net outperforms other architectures statistically significantly based on the Dice metric. GA-Net also shows improvements for the 95% Hausdorff Distance metric in most comparisons. Notably, GA-Net exhibits more sensitivity to subtle boundary information and produces more reliable and robust predictions for such structures, which are the most challenging parts to manually mend in practice, with potentially significant time-savings in the post hoc correction of these subtle boundary placement errors. Due to the prior knowledge provided from body areas, GA-Net achieves competitive performance with less training data. Our extension of the dual-decoder schema to TransUNet and 3D U-Net demonstrates that the new schema significantly improves the performance of these classical neural networks as well. Heatmaps obtained from attention gate layers further illustrate the geographical guidance function of body areas for identifying body tissues. CONCLUSIONS (i) Prior anatomic knowledge supplied in the form of appropriately designed anatomic container objects significantly improves the segmentation of bodily tissues. (ii) Of particular note are the improvements achieved in the delineation of subtle boundary features which otherwise would take much effort for manual correction. (iii) The method can be easily extended to existing networks to improve their accuracy for this application.
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Affiliation(s)
- Jian Dai
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Tiange Liu
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Drew A Torigian
- Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia 19104, PA, United States of America.
| | - Yubing Tong
- Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia 19104, PA, United States of America.
| | - Shiwei Han
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Pengju Nie
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Jing Zhang
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Ran Li
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei, China.
| | - Fei Xie
- School of AOAIR, Xidian University, Xi'an 710071, Shaanxi, China.
| | - Jayaram K Udupa
- Medical Image Processing Group, Department of Radiology, University of Pennsylvania, Philadelphia 19104, PA, United States of America.
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Bruschi A, Donati DM, Di Bella C. What to choose in bone tumour resections? Patient specific instrumentation versus surgical navigation: a systematic review. J Bone Oncol 2023; 42:100503. [PMID: 37771750 PMCID: PMC10522906 DOI: 10.1016/j.jbo.2023.100503] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/01/2023] [Accepted: 09/12/2023] [Indexed: 09/30/2023] Open
Abstract
Patient specific instrumentation (PSI) and intraoperative surgical navigation (SN) can significantly help in achieving wide oncological margins while sparing bone stock in bone tumour resections. This is a systematic review aimed to compare the two techniques on oncological and functional results, preoperative time for surgical planning, surgical intraoperative time, intraoperative technical complications and learning curve. The protocol was registered in PROSPERO database (CRD42023422065). 1613 papers were identified and 81 matched criteria for PRISMA inclusion and eligibility. PSI and SN showed similar results in margins (0-19% positive margins rate), bone cut accuracy (0.3-4 mm of error from the planned), local recurrence and functional reconstruction scores (MSTS 81-97%) for both long bones and pelvis, achieving better results compared to free hand resections. A planned bone margin from tumour of at least 5 mm was safe for bone resections, but soft tissue margin couldn't be planned when the tumour invaded soft tissues. Moreover, long osteotomies, homogenous bone topology and restricted working spaces reduced accuracy of both techniques, but SN can provide a second check. In urgent cases, SN is more indicated to avoid PSI planning and production time (2-4 weeks), while PSI has the advantage of less intraoperative using time (1-5 min vs 15-65 min). Finally, they deemed similar technical intraoperative complications rate and demanding learning curve. Overall, both techniques present advantages and drawbacks. They must be considered for the optimal choice based on the specific case. In the future, robotic-assisted resections and augmented reality might solve the downsides of PSI and SN becoming the main actors of bone tumour surgery.
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Affiliation(s)
- Alessandro Bruschi
- Orthopaedic Oncology Unit, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy
- Department of Orthopaedics, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Davide Maria Donati
- Orthopaedic Oncology Unit, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40123 Bologna, Italy
| | - Claudia Di Bella
- Department of Orthopaedics, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Department of Surgery, The University of Melbourne, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- VBJS, Victorian Bone and Joint Specialists, 7/55 Victoria Parade, Fitzroy, VIC 3065, Australia
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Deng Z, Zhang Q, Hao L, Ding Y, Niu X, Liu W. Accuracy of bony resection under computer-assisted navigation for bone sarcomas around the knee. World J Surg Oncol 2023; 21:187. [PMID: 37344874 DOI: 10.1186/s12957-023-03071-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 06/11/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND Computer-assisted navigation has made bone sarcoma resections more precise. However, further clinical studies involving accuracy analyses under navigation are still warranted. METHODS A retrospective study for analysis of computer-assisted navigation accuracy was carried out. Between September 2008 and November 2017, 39 cases of bone sarcomas around the knee joint were resected under computer-assisted navigation. The control group comprised 117 cases of bone sarcomas around the knee treated by limb salvage surgery wherein bony cutting was achieved freehand. The length difference (LD) was defined as the specimen length minus the planned resection length. The LDs were detected in both groups and compared. The margin accuracy (MA) was defined as the achieved margin minus the desired margin at the bone cutting site and was detected in the navigation group. RESULTS The LDs between the postoperative specimen length and the preoperative planned length were compared. In the navigation group, the LD was 0.5 ± 2.5 mm (range, - 5 to 5 mm), while in the freehand group, the LD was 3.4 ± 9.6 mm (range, - 20 to 29 mm), with a significant difference (P < 0.01). In the absolute value analysis, the LD absolute value was 2.0 ± 1.6 mm in the navigation group and 8.3 ± 6.0 mm in the freehand group, with a significant difference (P < 0.01). In the navigation group, the MA was 0.3 ± 1.5 mm (range, - 3 to 3 mm) and the MA absolute value was 1.1 ± 1.0 mm. CONCLUSIONS Better accuracy can be achieved when computer-assisted navigation is conducted for bone sarcoma resection around the knee. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Zhiping Deng
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Qing Zhang
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Lin Hao
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Yi Ding
- Department of Pathology, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Xiaohui Niu
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Weifeng Liu
- Department of Orthopaedic Oncology Surgery, Beijing Jishuitan Hospital, Beijing, 100035, China.
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van Steenbergen TRF, Nijsink H, Eggen TGE, Janssen D, Rovers MM, van der Geest ICM, Fütterer JJ. The accuracy of navigated versus freehand curettage in bone tumors: a cadaveric model study. Int J Comput Assist Radiol Surg 2023; 18:775-783. [PMID: 36327031 PMCID: PMC10039836 DOI: 10.1007/s11548-022-02741-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 08/31/2022] [Indexed: 11/06/2022]
Abstract
PURPOSE Navigation has been suggested to guide complex benign bone tumor curettage procedures, but the contribution of navigation to the accuracy of curettage has never been quantified. We explored the accuracy of navigated curettage in a cadaveric observational pilot study, comparing navigated to freehand curettage, performed independently by an expert and a novice user. METHODS The expert performed curettage on 20 cadaveric bones prepared with a paraffin wax mixture tumor, 10 freehand and 10 navigated. We re-used 12 bones for the novice experiments, 6 freehand and 6 navigated. Tumor and curettage cavity volumes were segmented on pre- and post-cone-beam CT scans. Accuracy was quantified using the Dice Similarity Coefficient (DSC), and with remaining tumor volume, bone curettage volume, maximal remaining width and procedure times compared between navigation and freehand groups for both users. RESULTS There were little differences in curettage accuracy between a navigated (DSC 0.59[0.17]) and freehand (DSC 0.64[0.10]) approach for an expert user, but there were for a novice user with DSC 0.67(0.14) and 0.83(0.06), respectively. All navigated and freehand procedures had some amount of remaining tumor, generally located in a few isolated spots with means of 2.2(2.6) cm3 (mean 20% of the tumor volume) and 1.5(1.4) cm3 (18%), respectively, for the expert and more diffusely spaced with means of 5.1(2.8) cm3 (33%) and 3.0(2.2) cm3 (17%), respectively, for the novice. CONCLUSIONS In an explorative study on 20 cadaveric bone tumor models, navigated curettage in its current setup was not more accurate than freehand curettage. The amount of remaining tumor, however, confirms that curettage could be further improved. The novice user was less accurate using navigation than freehand, which could be explained by the learning curve. Furthermore, the expert used a different surgical approach than the novice, focusing more on removing the entire tumor than sparing surrounding bone.
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Affiliation(s)
| | - Han Nijsink
- Department of Medical Imaging, Radboudumc, P.O. Box 9101, Nijmegen, 6500 HB, The Netherlands
| | - Thomas G E Eggen
- Department of Orthopaedics, Radboudumc, Nijmegen, The Netherlands
| | - Dennis Janssen
- Department of Orthopaedics, Radboudumc, Nijmegen, The Netherlands
| | - Maroeska M Rovers
- Department of Operating Rooms, Radboudumc, Nijmegen, The Netherlands
| | | | - J J Fütterer
- Department of Medical Imaging, Radboudumc, P.O. Box 9101, Nijmegen, 6500 HB, The Netherlands
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Christ AB, Hansen DG, Healey JH, Fabbri N. Computer-Assisted Surgical Navigation for Primary and Metastatic Bone Malignancy of the Pelvis: Current Evidence and Future Directions. HSS J 2021; 17:344-350. [PMID: 34539276 PMCID: PMC8436340 DOI: 10.1177/15563316211028137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
Computer-assisted navigation and robotic surgery have gained popularity in the treatment of pelvic bone malignancies, given the complexity of the bony pelvis, the proximity of numerous vital structures, and the historical challenges of pelvic bone tumor surgery. Initial interest was on enhancing the accuracy in sarcoma resection by improving the quality of surgical margins and decreasing the incidence of local recurrences. Several studies have shown an association between intraoperative navigation and increased incidence of negative margin bone resection, but long-term outcomes of navigation in pelvic bone tumor resection have yet to be established. Historically, mechanical stabilization of pelvic bone metastases has been limited to Harrington-type total hip arthroplasty for disabling periacetabular disease, but more recently, computer-assisted surgery has been employed for minimally invasive percutaneous fixation and stabilization; although still in its incipient stages, this procedure is potentially appealing for treating patients with bone metastases to the pelvis. The authors review the literature on navigation for the treatment of primary and metastatic tumors of the pelvic bone and discuss the best practices and limitations of these techniques.
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Affiliation(s)
- Alexander B. Christ
- Department of Orthopaedic Surgery, Keck Medicine of USC, Los Angeles, CA USA
| | - Derek G. Hansen
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - John H. Healey
- Department of Surgery, Orthopaedic Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nicola Fabbri
- Department of Surgery, Orthopaedic Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Complex Bone Tumors of the Trunk-The Role of 3D Printing and Navigation in Tumor Orthopedics: A Case Series and Review of the Literature. J Pers Med 2021; 11:jpm11060517. [PMID: 34200075 PMCID: PMC8228871 DOI: 10.3390/jpm11060517] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 02/07/2023] Open
Abstract
The combination of 3D printing and navigation promises improvements in surgical procedures and outcomes for complex bone tumor resection of the trunk, but its features have rarely been described in the literature. Five patients with trunk tumors were surgically treated in our institution using a combination of 3D printing and navigation. The main process includes segmentation, virtual modeling and build preparation, as well as quality assessment. Tumor resection was performed with navigated instruments. Preoperative planning supported clear margin multiplanar resections with intraoperatively adaptable real-time visualization of navigated instruments. The follow-up ranged from 2–15 months with a good functional result. The present results and the review of the current literature reflect the trend and the diverse applications of 3D printing in the medical field. 3D printing at hospital sites is often not standardized, but regulatory aspects may serve as disincentives. However, 3D printing has an increasing impact on precision medicine, and we are convinced that our process represents a valuable contribution in the context of patient-centered individual care.
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Zhu D, Fu J, Wang L, Guo Z, Wang Z, Fan H. Reconstruction with customized, 3D-printed prosthesis after resection of periacetabular Ewing's sarcoma in children using "triradiate cartilage-based" surgical strategy:a technical note. J Orthop Translat 2021; 28:108-117. [PMID: 33868923 PMCID: PMC8022806 DOI: 10.1016/j.jot.2020.12.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 11/26/2022] Open
Abstract
Background Surgery for Ewing sarcoma involving acetabulum in children is challenging. Considering the intrinsic structure of immature pelvis, trans-acetabular osteotomy through triradiate cartilage might be applied. The study was to describe the surgical technique and function outcomes of trans-acetabular osteotomy through triradiate cartilage and reconstruction with customized, 3D-printed prosthesis. Methods Two children with periacetabular ES were admitted to our hospital. The pre-operative imaging showed the triradiate cartilage was not penetrated or wholly affected by tumor. After neoadjuvant chemotherapy, the tumor was excised by trans-acetabular osteotomy basing on “triradiate cartilage strategy” and the acetabulum was reconstructed with the customized, 3D-printed prosthesis. The prosthesis was designed in Mimics software basing on the images from CT, optimized by topology technique, and examined in FE model. After implantation, the oncological and functional outcomes were evaluated with radiography, CT, and MSTS score. Results The operation time and intra-operative blood loss in these two children were 3.5h, 2.5h and 300 ml, 600 ml, respectively. The postoperative specimen showed the tumor was en bloc removed with safe margin. In the latest follow-up (48 months and 24 months), both patients were free of disease and had satisfactory function according to MSTS score. The radiography indicated the prosthesis fit the defect well without loosening. Conclusion The customized, 3D-printed prosthesis could provide optimal reconstruction of pelvic ring and satisfactory hip function after trans-acetabular osteotomy in children. The translational potential of this article This study provides promising results of implantation of customized 3D printing prosthesis in children’s pelvic sarcoma, which may bring a new design method for orthopaedic implants.
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Affiliation(s)
- Dongze Zhu
- Department of Orthopedic Surgery, Xi-jing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Jun Fu
- Department of Orthopedic Surgery, Xi-jing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Ling Wang
- State Key Laboratory for Manufacturing System Engineering, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Zheng Guo
- Department of Orthopedic Surgery, Xi-jing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Zhen Wang
- Department of Orthopedic Surgery, Xi-jing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Hongbin Fan
- Department of Orthopedic Surgery, Xi-jing Hospital, Air Force Medical University, Xi'an, 710032, China
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Computer-assisted surgical planning of complex bone tumor resections improves negative margin outcomes in a sawbones model. Int J Comput Assist Radiol Surg 2021; 16:695-701. [PMID: 33725339 DOI: 10.1007/s11548-021-02337-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/25/2021] [Indexed: 12/26/2022]
Abstract
PURPOSE Several technologies have been implemented in orthopedic surgery to improve surgical outcomes, usually focusing on more accurate execution of a surgical plan, but the development of the plan itself is also of great importance. The purpose of this study is to examine whether the use of preoperative computer planning platforms can improve the surgical plan? METHODS Eight surgeons created a preoperative surgical plan to resect a distal femur parosteal osteosarcoma in two settings: (1) Using a 2-D and 3-D CT scan only (current standard); and (2) using a computer-assisted planning platform. The plans were thereafter virtually executed using a novel surgical navigation system and a Sawbones model. This simulated model was derived from, and identical to, an actual patient scenario. The outcomes of interest were the number of positive margin cuts, and the volume of the resected specimen. RESULTS Using the surgical plan developed with computer assistance, there were 4 positive margin cuts made by 2 surgeons. In comparison, using standard planning, there were 14 positive margin cuts made by all 8 surgeons (p = 0.02). The resection volume was larger in the computer-assisted plans (96 ± 10 mm3) than in the standard plans (88 ± 7 mm3) (p = 0.055). CONCLUSIONS Computer-assisted planning significantly decreased the risk of a positive margin resection in this Sawbones tumor model used to simulate resection of a primary bone sarcoma. This proof of concept study highlights the importance of advanced surgical planning and sets the ground for developing beneficial surgical planning systems.
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11
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Surgical Advances in Osteosarcoma. Cancers (Basel) 2021; 13:cancers13030388. [PMID: 33494243 PMCID: PMC7864509 DOI: 10.3390/cancers13030388] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/17/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Osteosarcoma (OS) is the most common bone cancer in children. OS most commonly arises in the legs, but can arise in any bone, including the spine, head or neck. Along with chemotherapy, surgery is a mainstay of OS treatment and in the 1990s, surgeons began to shift from amputation to limb-preserving surgery. Since then, improvements in imaging, surgical techniques and implant design have led to improvements in functional outcomes without compromising on the cancer outcomes for these patients. This paper summarises these advances, along with a brief discussion of future technologies currently in development. Abstract Osteosarcoma (OS) is the most common primary bone cancer in children and, unfortunately, is associated with poor survival rates. OS most commonly arises around the knee joint, and was traditionally treated with amputation until surgeons began to favour limb-preserving surgery in the 1990s. Whilst improving functional outcomes, this was not without problems, such as implant failure and limb length discrepancies. OS can also arise in areas such as the pelvis, spine, head, and neck, which creates additional technical difficulty given the anatomical complexity of the areas. We reviewed the literature and summarised the recent advances in OS surgery. Improvements have been made in many areas; developments in pre-operative imaging technology have allowed improved planning, whilst the ongoing development of intraoperative imaging techniques, such as fluorescent dyes, offer the possibility of improved surgical margins. Technological developments, such as computer navigation, patient specific instruments, and improved implant design similarly provide the opportunity to improve patient outcomes. Going forward, there are a number of promising avenues currently being pursued, such as targeted fluorescent dyes, robotics, and augmented reality, which bring the prospect of improving these outcomes further.
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12
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Computer Navigation and 3D Printing in the Surgical Management of Bone Sarcoma. Cells 2021; 10:cells10020195. [PMID: 33498287 PMCID: PMC7909290 DOI: 10.3390/cells10020195] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/17/2021] [Accepted: 01/18/2021] [Indexed: 12/16/2022] Open
Abstract
The long-term outcomes of osteosarcoma have improved; however, patients with metastases, recurrence or axial disease continue to have a poor prognosis. Computer navigation in surgery is becoming ever more commonplace, and the proposed advantages, including precision during surgery, is particularly applicable to the field of orthopaedic oncology and challenging areas such as the axial skeleton. Within this article, we provide an overview of the field of computer navigation and computer-assisted tumour surgery (CATS), in particular its relevance to the surgical management of osteosarcoma.
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13
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Stübig T, Windhagen H, Krettek C, Ettinger M. Computer-Assisted Orthopedic and Trauma Surgery. DEUTSCHES ARZTEBLATT INTERNATIONAL 2020; 117:793-800. [PMID: 33549155 PMCID: PMC7947640 DOI: 10.3238/arztebl.2020.0793] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/06/2020] [Accepted: 08/24/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND There are many ways in which computer-assisted orthopedic and trauma surgery (CAOS) procedures can help surgeons to plan and execute an intervention. METHODS This study is based on data derived from a selective search of the literature in the PubMed database, supported by a Google Scholar search. RESULTS For most applications the evidence is weak. In no sector did the use of computer-assisted surgery yield any relevant clinical or functional improvement. In trauma surgery, 3D-navigated sacroiliac screw fixation has become clinically established for the treatment of pelvic fractures. One randomized controlled trial showed a reduction in the rate of screw misplacement: 0% with 3D navigation versus 20.4% with the conventional procedure und 16.6% with 2D navigation. Moreover, navigation-assisted pedicle screw stabilization lowers the misplacement rate. In joint replacements, the long-term results showed no difference in respect of clinical/functional scores, the time for which the implant remained in place, or aseptic loosening. CONCLUSION Computer-assisted procedures can improve the precision of certain surgical interventions. Particularly in joint replacement and spinal surgery, the research is moving away from navigation in the direction of robotic procedures. Future studies should place greater emphasis on clinical and functional results.
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Affiliation(s)
- Timo Stübig
- Department of Traumatology, Hannover Medical School
| | - Henning Windhagen
- Department of Orthopedic Surgery, Hannover Medical School, Annastift
| | | | - Max Ettinger
- Department of Orthopedic Surgery, Hannover Medical School, Annastift
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14
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Tepper SC, Blank AT, Gitelis S, Colman MW. Pelvic ring reconstruction with segmental spinal instrumentation after complete type I pelvic resection. J Surg Oncol 2020; 122:1721-1730. [PMID: 32844400 DOI: 10.1002/jso.26194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/17/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND AND OBJECTIVES Internal hemipelvectomy is a complex procedure used to treat malignancy that involves the pelvis. Reconstruction of the pelvis after type I or type I/IV resection remains controversial due to high complication rates and debatable functional benefit. Modern reconstruction options may provide a rapid, intuitive, and reliable way to reconstitute the pelvic ring. METHODS This is a retrospective case series of four patients who underwent a novel reconstruction method involving computer navigation and segmental spinal instrumentation applied to the pelvis after type I or type I/IV pelvic resection for malignancy between 2015 and 2020. RESULTS Time to ambulation postoperatively ranged from 1 to 7 days, and median length of hospital stay was 8.5 (7.5, 10.5) days. Complications included wound necrosis in two patients that did not require reoperation and wound infection in one patient that required irrigation and debridement. There was no radiographic evidence of hardware loosening or failure on follow-up. Three patients remain alive and two remain disease-free. At most recent follow-up, all patients were able to ambulate and perform activities of daily living. CONCLUSIONS The technique for pelvic reconstruction described allows for rapid fixation intraoperatively with few complications and satisfactory functional results in this limited series.
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Affiliation(s)
- Sarah C Tepper
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Alan T Blank
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Steven Gitelis
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Matthew W Colman
- Department of Orthopedic Surgery, Midwest Orthopaedics at Rush University Medical Center, Chicago, Illinois
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15
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Siegel MA, Balach T, Sweeney KR, Nystrom LM, Colman MW. Sacroiliac joint cut accuracy: Comparing new technologies in an idealized sawbones model. J Surg Oncol 2020; 122:1218-1225. [PMID: 32761627 DOI: 10.1002/jso.26124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/25/2020] [Accepted: 07/07/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVES The anatomical complexity of the pelvis creates challenges for orthopaedic oncologists to accurately and safely resect tumors involving the sacroiliac joint. Current technology may help overcome these obstacles. METHODS Four fellowship-trained orthopaedic oncologists performed 22 all-posterior sacroiliac cuts using freehand, computerized navigation, and patient-specific cutting guides on a Sawbones male pelvis model. Cut accuracies to preoperative planned margins were analyzed via a high-resolution optical scanner. Soft tissue damage was determined by visually inspecting the Sawbones foam placed on the far side of the cut. RESULTS Within 5 mm of the margins, the freehand technique resulted in 67.0% cut accuracy, the navigation technique had 71.1%, and the patient-specific cutting guide technique had 85.6% (P = .093). Within 2 mm, the techniques showed an accuracy of 25.8%, 32.5%, and 47.5%, respectively (P = .022). Regarding soft tissue damage, the freehand technique exhibited minimal penetration damage for 16.7% of the cuts, while navigation and patient-specific guide techniques exhibited 25.0% and 75.0%, respectively (P = .046). Years of surgical experience of the operator (1-7) did not influence the cut accuracy for any method. CONCLUSIONS Under ideal conditions, patient-specific guide technology possesses the same or better accuracy as other cutting techniques as well as the circumvention of soft tissue damage.
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Affiliation(s)
- Matthew A Siegel
- Department of Orthopaedic Surgery, College of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Tessa Balach
- Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Chicago, Chicago, Illinois
| | - Kyle R Sweeney
- Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas, Kansas
| | | | - Matthew W Colman
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
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16
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New perspectives on surgical accuracy analysis of image-guided bone tumour resection surgery. INTERNATIONAL ORTHOPAEDICS 2020; 44:987-994. [PMID: 32219496 DOI: 10.1007/s00264-020-04539-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/13/2020] [Indexed: 12/29/2022]
Abstract
PURPOSE Image-guided bone tumour resection surgery has been proved in previous literatures to be more accurate than those conventional freehand ones (p < 0.001). However, in this kind of surgery, there are still many procedures depending on manual operations, which will inevitably introduce surgical errors into the surgery. In particular, the negative surgical errors (i.e., errors toward tumour) would increase the risk of tumor recurrence and metastasis. Thus, the first purpose of this study was to evaluate whether the negative surgical errors of image-guided bone tumour resection surgery were statistically significantly great, the second purpose is to evaluate whether the negative surgical errors of image-guided long-bone tumour resection surgery were statistically equivalent to those of pelvis surgery, and the last purpose is to recommend a solution for suppressing these errors when using a navigation system. METHODS Negative surgical errors of 24 osteotomies in ten pelvis tumour resection operations and 16 osteotomies in ten long-bone surgeries under the image guidance of a navigation system were statistically evaluated and compared with - 2.0 mm. The equivalence of negative surgical errors of pelvis group and those of long-bone group was statistically tested. To suppress these negative surgical errors when using a navigation system, we recommend, based on the obtained statistics, to increase the margins between cut planes and tumour boundary during pre-operatively planning cut planes, by adding an extra margin with the empirical safe margin according to the absolute lower bound of 95% CI of negative surgical errors. RESULTS Negative surgical errors of the pelvis group and the long-bone group were both significantly less than - 2.0 mm (p < 0.001), but not statistically equivalent (Rg > 1 mm). 95% CI of negative surgical errors were from - 3.95 to - 3.27 mm for the pelvis group, and from - 2.69 to - 2.34 mm for the long-bone group. So, the extra margin added for image-guided pelvis tumour resection surgery should be set as 3.95 mm, and the extra margin added for image-guided long-bone surgery should be set as 2.69 mm. CONCLUSION The negative surgical errors of image-guided bone resection surgery were statistically significantly less than - 2.0 mm (p < 0.001), thus these errors cannot be safely ignored. Moreover, the negative surgical errors of the pelvis group were not equivalent to those of the long-bone group (Rg > 1.0 mm), thus the solution for image-guided pelvis tumour resection surgery and that for image-guided long-bone tumour resection surgery should be separately determined. In order to suppress these negative surgical errors when using a navigation system, we recommend to add extra 3.95 mm margin with the empirical safe margin for image-guided pelvis tumour resection surgery and to add extra 2.69 mm margin for image-guided long-bone tumour resection surgery during pre-operatively planning cut planes.
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17
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Francq BG, Lin D, Hoyer W. Confidence, prediction, and tolerance in linear mixed models. Stat Med 2019; 38:5603-5622. [PMID: 31659784 PMCID: PMC6916346 DOI: 10.1002/sim.8386] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 08/05/2019] [Accepted: 09/13/2019] [Indexed: 11/15/2022]
Abstract
The literature about Prediction Interval (PI) and Tolerance Interval (TI) in linear mixed models is usually developed for specific designs, which is a main limitation to their use. This paper proposes to reformulate the two‐sided PI to be generalizable under a wide variety of designs (one random factor, nested and crossed designs for multiple random factors, and balanced or unbalanced designs). This new methodology is based on the Hessian matrix, namely, the inverse of (observed) Fisher Information matrix, and is built with a cell mean model. The degrees of freedom for the total variance are calculated with the generalized Satterthwaite method and compared to the Kenward‐Roger's degrees of freedom for fixed effects. Construction of two‐sided TIs are also detailed with one random factor, and two nested and two crossed random variables. An extensive simulation study is carried out to compare the widths and coverage probabilities of Confidence Intervals (CI), PIs, and TIs to their nominal levels. It shows excellent coverage whatever the design and the sample size are. Finally, these CIs, PIs, and TIs are applied to two real data sets: one from orthopedic surgery study (intralesional resection risk) and the other from assay validation study during vaccine development.
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Affiliation(s)
| | - Dan Lin
- Pre-Clinical & Research - Biostatistics and Statistical Programming, GSK, Rixensart, Belgium
| | - Walter Hoyer
- TRD - CMC Statistical Sciences, GSK, Marburg, Germany
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18
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Wirth SH, Rahm S, Kamath AF, Dora C, Zingg PO. Periacetabular osteotomy using three-dimensional cutting and reposition guides: a cadaveric study. J Hip Preserv Surg 2019; 6:411-420. [PMID: 33585036 PMCID: PMC7869095 DOI: 10.1093/jhps/hnz051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/29/2019] [Accepted: 10/03/2019] [Indexed: 11/13/2022] Open
Abstract
The goal of periacetabular osteotomy (PAO) is to reorient the acetabulum in a more physiological position. Its realization remains challenging regarding the final position of the acetabulum. Assistance with custom cutting- and reorientation-guides would thus be very helpful. Our purpose is to present a pilot study on such guides. Eight cadaveric hemipelvis were scanned using CT. After segmentation, 3D models of each specimen were created, a PAO was virtually performed and reorientation of the acetabula were defined. A specific guide was designed aiming to assist in iliac, posterior column and superior pubic ramus cuts as well as in acetabulum reorientation. Furthermore, the acetabular position was planned. Three-dimensional printed guides were used to perform PAO using the modified Smith-Peterson approach. The post-operative CT images and virtually planned acetabulum reorientation were compared in terms of acetabular index (AC), lateral centre edge angle (LCE), acetabular anteversion angle (AcetAV). There was no intra-articular or posterior column fracture seen. Two cadavers showed very low bone quality with insufficient stability of fixation and were excluded from further analysis. Correlation between the post-operative result and planning of the six included cadavers revealed the following mean deviations: 5° (SD ±3°) for AC angle, 6° (SD ±4°) for LCE angle and 15° (SD ±11°) for AcetAV angle. The use of 3D cutting and reorientation blocks for PAO was possible through a modified Smith-Peterson approach and revealed accurate fit to bone, accurate positioning of the osteotomies and acceptable planned corrections in cadavers with good bone quality.
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Affiliation(s)
- Stephan H Wirth
- Department of Orthopaedics, University of Zürich, Balgrist Hospital, Zürich 8032, Switzerland
| | - Stefan Rahm
- Department of Orthopaedics, University of Zürich, Balgrist Hospital, Zürich 8032, Switzerland
- Correspondence to: S. H. Rahm, Department of Orthopaedics, Balgrist University Hospital, University of Zürich, Balgrist Hospital, Forchstrasse 340, 8008 Zürich, Switzerland. E-mail:
| | - Atul F Kamath
- Center for Hip Preservation, Orthopaedic and Rheumatologic Institute, Cleveland Clinic, Cleveland, OH 44139, USA
| | - Claudio Dora
- Department of Orthopaedics, University of Zürich, Balgrist Hospital, Zürich 8032, Switzerland
| | - Patrick O Zingg
- Department of Orthopaedics, University of Zürich, Balgrist Hospital, Zürich 8032, Switzerland
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19
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Nandra R, Matharu G, Stevenson J, Parry M, Grimer R, Jeys L. Long-term outcomes after an initial experience of computer-navigated resection of primary pelvic and sacral bone tumours. Bone Joint J 2019; 101-B:484-490. [PMID: 30929483 DOI: 10.1302/0301-620x.101b4.bjj-2018-0981.r1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aims The aim of this study was to investigate the local recurrence rate at an extended follow-up in patients following navigated resection of primary pelvic and sacral tumours. Patients and Methods This prospective cohort study comprised 23 consecutive patients (nine female, 14 male) who underwent resection of a primary pelvic or sacral tumour, using computer navigation, between 2010 and 2012. The mean age of the patients at the time of presentation was 51 years (10 to 77). The rates of local recurrence and mortality were calculated using the Kaplan–Meier method. Results Bone resection margins were all clear and there were no bony recurrences. At a mean follow-up for all patients of 59 months (12 to 93), eight patients (34.8%) developed soft-tissue local recurrence, with a cumulative rate of local recurrence at six-years of 35.1% (95% confidence interval (CI) 19.3 to 58.1). The cumulative all-cause rate of mortality at six-years was 26.1% (95% CI 12.7 to 49.1). Conclusion Despite the positive early experience with navigated-assisted resection, local recurrence rates remain high. With increasing knowledge of the size of soft-tissue margins required to reduce local recurrence and the close proximity of native structures in the pelvis, we advise against compromising resection to preserve function, and encourage surgeons to reduce local recurrence by prioritizing wide resection margins of the tumour. Cite this article: Bone Joint J 2019;101-B:484–490.
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Affiliation(s)
- R. Nandra
- West Midlands Deanery, Birmingham, UK
| | | | - J. Stevenson
- The Royal Orthopaedic Hospital, Birmingham, UK
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - M. Parry
- The Royal Orthopaedic Hospital, Birmingham, UK
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - R. Grimer
- The Royal Orthopaedic Hospital, Birmingham, UK
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - L. Jeys
- The Royal Orthopaedic Hospital, Birmingham, UK
- School of Life and Health Sciences, Aston University, Birmingham, UK
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Lam YL, Chan ACL. Editorial on "Can navigation-assisted surgery help achieve negative margins in resection of pelvic and sacral tumor?". JOURNAL OF SPINE SURGERY 2018; 4:681-683. [PMID: 30547139 DOI: 10.21037/jss.2018.07.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ying-Lee Lam
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, Hong Kong, China
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Obtaining patient-specific point model of the human ilium bone in the case of incomplete volumetric data using the method of parametric regions. AUSTRALASIAN PHYSICAL & ENGINEERING SCIENCES IN MEDICINE 2018; 41:931-944. [PMID: 30267324 DOI: 10.1007/s13246-018-0689-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 09/21/2018] [Indexed: 10/28/2022]
Abstract
In this paper, we present the methodology for determining the point model of the ilium bone in cases when volumetric data of the whole bone are not available. An extreme traumatic bone damage, osteoporosis, destruction of bone tissue by malignant bone tumors or the existence of only 2D medical image (X-ray) can be the reason for the lack of complete volumetric data. Points on the bone surface were defined at the curves that run through 26 previously defined parameters, at the edges of anteroposterior (A-P) and lateral projections and at the parts of the surface between some parameters. Those parts of the surface, enclosed by parameters, represent ten parametric regions. The values of coordinates, which represent the input data in the statistical program, were measured in a uniquely defined coordinate system. After establishing the correlations between the values of coordinates, 8869 different linear and nonlinear regression models were obtained. The prediction values for point coordinates were calculated and exported to a CAD program. Results obtained were tested on a randomly chosen male right ilium bone, applying the methodology for creating the prediction model using the method of parametric regions, which allows creating a complete polygonal model, for each region separately or just for some parts of the region. Results obtained in the form of regression equations for the right ilium bone can be applied to the left ilium bone. The results of the research were verified using a comparative deviation and distance analysis between the initial and obtained polygonal models.
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Thadani VN, Riaz MJ, Singh G. The evolution of three-dimensional technology in musculoskeletal oncology. J Clin Orthop Trauma 2018; 9:269-274. [PMID: 30202160 PMCID: PMC6128801 DOI: 10.1016/j.jcot.2018.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/21/2018] [Indexed: 12/25/2022] Open
Abstract
Musculoskeletal tumours pose considerable challenges for the orthopaedic surgeon during pre-operative planning, resection and reconstruction. Improvements in imaging technology have improved the diagnostic process of these tumours. Despite this, studies have highlighted the difficulties in achieving consistent resection free margins especially in tumours of the pelvis and spine when using conventional methods. Three-dimensional technology - three-dimensional printing and navigation technology - while relatively new, may have the potential to prove useful in the musculoskeletal tumour surgeon's arsenal. Three-dimensional printing (3DP) allows the production of objects by adding material layer by layer rather than subtraction from raw materials as performed conventionally. High resolution imaging, computer tomography (CT) and magnetic resonance imaging (MRI), are used to print highly complex and accurate items. Powder-based printing, vat polymerization-based printing and droplet-based printing are the common 3DP technologies applied. 3DP has been utilized pre-operatively in surgical planning and intra-operatively for patient specific instruments and custom made prosthesis. Pre-operative 3DP models transfer information to the surgeon in a concise yet exhaustive manner. Patient specific instruments are customized 3DP instruments utilized with the intention to easily replicate surgical plans. Complex musculoskeletal tumours pose reconstructive challenges and standard implants are often unable to reconstruct defects satisfactorily. The ability to use custom materials and tailor the pore size, elastic modulus and porosity of the 3DP prosthesis to be comparable to the patient's bone allows for a potential patient-specific prosthesis with unique incorporation and longevity properties. Similarly, navigation technology utilizes CT or MRI images to provides surgeons with real time intraoperative three-dimensional calibration of instruments. It has been shown to potentially allow surgeons to perform more accurate resections. These technological advancements have the potential to greatly impact the management of musculoskeletal tumours. 3D planning models, patient-specific instruments and customized 3DP implants and navigation should not be thought of as separate, but rather, patient-specific adaptation of relevant modes of application should be selected on a case-by-case basis when taking all unique factors of each case into consideration.
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Affiliation(s)
| | | | - Gurpal Singh
- University Orthopaedics, Hand and Reconstructive Microsurgery (UOHC), National University Health System, Singapore
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Sternheim A, Kashigar A, Daly M, Chan H, Qiu J, Weersink R, Jaffray D, Irish JC, Ferguson PC, Wunder JS. Cone-Beam Computed Tomography-Guided Navigation in Complex Osteotomies Improves Accuracy at All Competence Levels: A Study Assessing Accuracy and Reproducibility of Joint-Sparing Bone Cuts. J Bone Joint Surg Am 2018; 100:e67. [PMID: 29762285 DOI: 10.2106/jbjs.16.01304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The objective of this study was to assess the accuracy and reproducibility of a novel cone-beam computed tomography (CBCT)-guided navigation system designed for osteotomies with joint-sparing bone cuts. METHODS Eighteen surgeons participated in this study. First, 3 expert tumor surgeons resected bone tumors in 3 Sawbones tumor models identical to actual patient scenarios. They first performed these osteotomies without navigation and then performed them using a navigation system and 3-dimensional (3D) planning tools based on CBCT imaging. The 2 sets of measurements were compared using image-based measurements from post-resection CBCT. Next, 15 residents, fellows, and orthopaedic staff surgeons were instructed on the use of the system, and their navigated resections were compared with navigated resections performed by the 3 expert tumor surgeons. RESULTS One hundred and twenty-six navigated cuts done by the orthopaedic oncologists were compared with 126 non-navigated cuts by the same surgeons. The cuts violated the tumor in 22% (6) of the 27 non-navigated resections compared with none of the 27 navigated resections. The navigated cuts were significantly more accurate in terms of entry point, pitch, and roll (p < 0.001). The variation among the 3 surgeons when they used navigation was <0.6 mm for the entry cut and, on average, 1.5° for pitch and roll. All 18 surgeons then completed a total of 144 navigated cuts. The level of experience did not result in a significant difference among groups with regard to cut accuracy. Two cuts went into the tumor. The mean distance from the planned bone cuts to the actual entry points into bone was 1.5 mm (standard deviation [SD] = 1.4 mm) for all users. The mean difference in pitch and roll between the planned and actual cuts was 3.5° (SD = 2.8°) and 3.7° (SD = 3.2°) for all users. CONCLUSIONS Even in expert hands, navigated cuts were significantly more accurate than non-navigated cuts. When the osteotomies were aided by navigation, their accuracy did not differ according to the level of professional experience. CBCT-based metrics enable intraoperative assessments of cut accuracy and reconstruction planning. CLINICAL RELEVANCE CBCT-guided navigated osteotomies can improve accuracy regardless of surgeon experience and decrease the variability among different surgeons.
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Affiliation(s)
- Amir Sternheim
- National Unit of Orthopaedic Oncology, Tel Aviv Medical Center, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Aidin Kashigar
- Division of Orthopaedic Surgery, Queen's University, Kingston, Ontario, Canada
| | - Michael Daly
- Techna Institute, University Health Network, Toronto, Ontario, Canada
| | - Harley Chan
- Techna Institute, University Health Network, Toronto, Ontario, Canada
| | - Jimmy Qiu
- Techna Institute, University Health Network, Toronto, Ontario, Canada
| | - Robert Weersink
- Techna Institute, University Health Network, Toronto, Ontario, Canada
| | - David Jaffray
- Techna Institute, University Health Network, Toronto, Ontario, Canada.,Department of Radiation Physics, Princess Margaret Cancer Centre, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Jonathan C Irish
- Techna Institute, University Health Network, Toronto, Ontario, Canada.,Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada.,Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Peter C Ferguson
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada.,Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,University Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Jay S Wunder
- Department of Surgical Oncology, University Health Network, Toronto, Ontario, Canada.,Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,University Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
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Computer-assisted surgery prevents complications during peri-acetabular osteotomy. INTERNATIONAL ORTHOPAEDICS 2018; 42:2555-2561. [PMID: 29582116 DOI: 10.1007/s00264-018-3906-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE The aim of study is to evaluate the accuracy of a navigation system during curved peri-acetabular osteotomy (CPO). METHODS Forty-seven patients (53 hips) with hip dysplasia were enrolled and underwent CPO with or without navigation during surgery. Clinical and radiographical evaluations were performed and compared between the navigation group and non-navigation group, post-operatively. RESULTS The clinical outcomes were not significantly different between the navigation and non-navigation groups. Furthermore, post-operative reorientation of the acetabular fragment was similar between the navigation and non-navigation groups. However, the discrepancy between the pre-operative planning line and post-operative osteotomy line was significantly improved in the navigation group compared with that in the non-navigation group (p < 0.05). Further, the complication rate was significantly improved in the navigation group (p < 0.001). CONCLUSION The accuracy of the osteotomy's position was significantly improved by using the navigation. Therefore, the use of navigation during peri-acetabular osteotomy can avoid complications.
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25
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Lim SH, Kim YH, Kim MK, Nam W, Kang SH. Validation of a fibula graft cutting guide for mandibular reconstruction: experiment with rapid prototyping mandible model. Comput Assist Surg (Abingdon) 2018; 21:9-17. [PMID: 27973958 DOI: 10.3109/24699322.2016.1167245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE We examined whether cutting a fibula graft with a surgical guide template, prepared with computer-aided design/computer-aided manufacturing (CAD/CAM), would improve the precision and accuracy of mandibular reconstruction. METHODS Thirty mandibular rapid prototype (RP) models were allocated to experimental (N = 15) and control (N = 15) groups. Thirty identical fibular RP models were assigned randomly, 15 to each group. For reference, we prepared a reconstructed mandibular RP model with a three-dimensional printer, based on surgical simulation. In the experimental group, a stereolithography (STL) surgical guide template, based on simulation, was used for cutting the fibula graft. In the control group, the fibula graft was cut manually, with reference to the reconstructed RP mandible model. The mandibular reconstructions were compared to the surgical simulation, and errors were calculated for both the STL surgical guide and the manual methods. RESULTS The average differences in three-dimensional, minimum distances between the reconstruction and simulation were 9.87 ± 6.32 mm (mean ± SD) for the STL surgical guide method and 14.76 ± 10.34 mm (mean ± SD) for the manual method. DISCUSSION The STL surgical guide method incurred less error than the manual method in mandibular reconstruction. A fibula cutting guide improved the precision of reconstructing the mandible with a fibula graft.
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Affiliation(s)
- Se-Ho Lim
- a Department of Oral and Maxillofacial Surgery , National Health Insurance Service Ilsan Hospital , Goyang , Republic of Korea
| | - Yeon-Ho Kim
- a Department of Oral and Maxillofacial Surgery , National Health Insurance Service Ilsan Hospital , Goyang , Republic of Korea
| | - Moon-Key Kim
- a Department of Oral and Maxillofacial Surgery , National Health Insurance Service Ilsan Hospital , Goyang , Republic of Korea.,b Department of Oral and Maxillofacial Surgery , College of Dentistry, Yonsei University , Seoul , Republic of Korea
| | - Woong Nam
- b Department of Oral and Maxillofacial Surgery , College of Dentistry, Yonsei University , Seoul , Republic of Korea
| | - Sang-Hoon Kang
- a Department of Oral and Maxillofacial Surgery , National Health Insurance Service Ilsan Hospital , Goyang , Republic of Korea.,b Department of Oral and Maxillofacial Surgery , College of Dentistry, Yonsei University , Seoul , Republic of Korea
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Abstract
Navigation in surgery has increasingly become more commonplace. The use of this technological advancement has enabled ever more complex and detailed surgery to be performed to the benefit of surgeons and patients alike. This is particularly so when applying the use of navigation within the field of orthopedic oncology. The developments in computer processing power coupled with the improvements in scanning technologies have permitted the incorporation of navigational procedures into day-to-day practice. A comprehensive search of PubMed using the search terms "navigation", "orthopaedic" and "oncology" yielded 97 results. After filtering for English language papers, excluding spinal surgery and review articles, this resulted in 38 clinical studies and case reports. These were analyzed in detail by the authors (GM and JS) and the most relevant papers reviewed. We have sought to provide an overview of the main types of navigation systems currently available within orthopedic oncology and to assess some of the evidence behind its use.
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Affiliation(s)
- Guy Vernon Morris
- The Oncology Department, The Royal Orthopaedic Hospital NHS Trust, Birmingham, West Midlands, United Kingdom,Address for correspondence: Dr. Guy Vernon Morris, The Oncology Unit, The Royal Orthopaedic Hospital NHS Trust, Bristol Road South, Birmingham B31 2AP, West Midlands, United Kingdom. E-mail:
| | - Jonathan D Stevenson
- The Oncology Department, The Royal Orthopaedic Hospital NHS Trust, Birmingham, West Midlands, United Kingdom
| | - Scott Evans
- The Oncology Department, The Royal Orthopaedic Hospital NHS Trust, Birmingham, West Midlands, United Kingdom
| | - Michael C Parry
- The Oncology Department, The Royal Orthopaedic Hospital NHS Trust, Birmingham, West Midlands, United Kingdom
| | - Lee Jeys
- The Oncology Department, The Royal Orthopaedic Hospital NHS Trust, Birmingham, West Midlands, United Kingdom,School of Health and Life Sciences, Aston University, Birmingham, United Kingdom
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27
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Cartiaux O, Jenny JY, Joskowicz L. Accuracy of Computer-Aided Techniques in Orthopaedic Surgery: How Can It Be Defined, Measured Experimentally, and Analyzed from a Clinical Perspective? J Bone Joint Surg Am 2017; 99:e39. [PMID: 28419041 DOI: 10.2106/jbjs.15.01347] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Surgical accuracy is multifactorial. Therefore, it is crucial to consider all influencing factors when investigating the accuracy of a surgical procedure, such as the surgeon's experience, the assistive technologies that may be used by the surgeon, and the patient factors associated with the specific anatomical site. For in vitro preclinical investigations, accuracy should be linked to the concepts of trueness (e.g., distance from the surgical target) and precision (e.g., variability in relation to the surgical target) to gather preclinical, quantitative, objective data on the accuracy of completed surgical procedures that have been performed with assistive technologies. The clinical relevance of improvements in accuracy that have been observed experimentally may be evaluated by analyzing the impact on the risk of failure and by taking into account the level of tolerance in relation to the surgical target (e.g., the extent of the safety zone). The International Organization for Standardization (ISO) methodology enables preclinical testing of new assistive technologies to quantify improvements in accuracy and assess the benefits in terms of reducing the risk of failure and achieving surgical targets with tighter tolerances before the testing of clinical outcomes.
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Affiliation(s)
- Olivier Cartiaux
- 1Computer Assisted and Robotic Surgery, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium 2Centre de Chirurgie Orthopédique et de la Main, Les Hôpitaux Universitaires de Strasbourg, Illkirch, France 3The Rachel and Selim Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel
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Laitinen MK, Parry MC, Albergo JI, Grimer RJ, Jeys LM. Is computer navigation when used in the surgery of iliosacral pelvic bone tumours safer for the patient? Bone Joint J 2017; 99-B:261-266. [DOI: 10.1302/0301-620x.99b2.bjj-2016-0149.r2] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 10/03/2016] [Indexed: 11/05/2022]
Abstract
Aims Due to the complex anatomy of the pelvis, limb-sparing resections of pelvic tumours achieving adequate surgical margins, can often be difficult. The advent of computer navigation has improved the precision of resection of these lesions, though there is little evidence comparing resection with or without the assistance of navigation. Our aim was to evaluate the efficacy of navigation-assisted surgery for the resection of pelvic bone tumours involving the posterior ilium and sacrum. Patients and Methods Using our prospectively updated institutional database, we conducted a retrospective case control study of 21 patients who underwent resection of the posterior ilium and sacrum, for the treatment of a primary sarcoma of bone, between 1987 and 2015. The resection was performed with the assistance of navigation in nine patients and without navigation in 12. We assessed the accuracy of navigation-assisted surgery, as defined by the surgical margin and how this affects the rate of local recurrence, the disease-free survival and the effects on peri-and post-operative morbidity. Results The mean age of the patients was 36.4 years (15 to 66). The mean size of the tumour was 10.9 cm. In the navigation-assisted group, the margin was wide in two patients (16.7%), marginal in six (66.7%) and wide-contaminated in one (11.1%) with no intralesional margin. In the non-navigated-assisted group; the margin was wide in two patients (16.7%), marginal in five (41.7%), intralesional in three (25.0%) and wide-contaminated in two (16.7%). Local recurrence occurred in two patients in the navigation-assisted group (22.2%) and six in the non-navigation-assisted group (50.0%). The disease-free survival was significantly better when operated with navigation-assistance (p = 0.048). The blood loss and operating time were less in the navigated-assisted group, as was the risk of a foot drop post-operatively. Conclusion The introduction of navigation-assisted surgery for the resection of tumours of the posterior ilium and sacrum has increased the safety for the patients and allows for a better oncological outcome. Cite this article: Bone Joint J 2017;99-B:261–6.
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Affiliation(s)
- M. K. Laitinen
- Royal Orthopaedic Hospital NHS Foundation
Trust, and Tampere University Hospital, Department
of Orthopaedics, Unit of Musculoskeletal Surgery, Tampere, Finland
| | - M. C. Parry
- Royal Orthopaedic Hospital NHS Foundation
Trust, Birmingham, UK
| | - J. I. Albergo
- Hospital Italiano de Buenos Aires, Juan
D Peron 4190, C1181ACH Buenos Aires, Argentina
| | - R. J. Grimer
- Royal Orthopaedic Hospital NHS Foundation
Trust, Birmingham, UK
| | - L. M. Jeys
- Royal Orthopaedic Hospital NHS Foundation
Trust, Birmingham, UK
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29
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Abstract
Treatment of bone sarcoma requires careful planning and involvement of an experienced multidisciplinary team. Significant advancements in systemic therapy, radiation, and surgery in recent years have contributed to improved functional and survival outcomes for patients with these difficult tumors, and emerging technologies hold promise for further advancement.
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Affiliation(s)
- Christina J Gutowski
- Department of Orthopedic Surgery, Sidney Kimmel Medical College at Thomas Jefferson University, 1025 Walnut Street, Room 516 College, Philadelphia, PA 19107, USA
| | - Atrayee Basu-Mallick
- Department of Medical Oncology, Sarcoma and Bone Tumor Center at Sidney Kimmel Cancer Center, Thomas Jefferson University Hospital, 1025 Walnut Street, Suite 700, Philadelphia, PA 19107
| | - John A Abraham
- Department of Orthopedic Surgery, Rothman Institute at Jefferson University Hospital, 925 Chestnut Street, Philadelphia, PA 19107, USA; Department of Surgical Oncology, Fox Chase Cancer Center, 333 Cottman Ave, Philadelphia, PA 19111, USA.
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30
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Augmented Endoscopic Images Overlaying Shape Changes in Bone Cutting Procedures. PLoS One 2016; 11:e0161815. [PMID: 27584732 PMCID: PMC5008631 DOI: 10.1371/journal.pone.0161815] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 08/12/2016] [Indexed: 11/19/2022] Open
Abstract
In microendoscopic discectomy for spinal disorders, bone cutting procedures are performed in tight spaces while observing a small portion of the target structures. Although optical tracking systems are able to measure the tip of the surgical tool during surgery, the poor shape information available during surgery makes accurate cutting difficult, even if preoperative computed tomography and magnetic resonance images are used for reference. Shape estimation and visualization of the target structures are essential for accurate cutting. However, time-varying shape changes during cutting procedures are still challenging issues for intraoperative navigation. This paper introduces a concept of endoscopic image augmentation that overlays shape changes to support bone cutting procedures. This framework handles the history of the location of the measured drill tip as a volume label and visualizes the remains to be cut overlaid on the endoscopic image in real time. A cutting experiment was performed with volunteers, and the feasibility of this concept was examined using a clinical navigation system. The efficacy of the cutting aid was evaluated with respect to the shape similarity, total moved distance of a cutting tool, and required cutting time. The results of the experiments showed that cutting performance was significantly improved by the proposed framework.
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31
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Postl LK, Kirchhoff C, Toepfer A, Kirchhoff S, Schmitt-Sody M, von Eisenhart-Rothe R, Burgkart R. Potential accuracy of navigated K-wire guided supra-acetabular osteotomies in orthopedic surgery: a CT fluoroscopy cadaver study. Int J Med Robot 2016; 13. [PMID: 27273244 DOI: 10.1002/rcs.1752] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 04/05/2016] [Accepted: 04/26/2016] [Indexed: 11/11/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the accuracy of supra-acetabular pelvic tumor resections in human, full-body cadavers and under realistic operation room conditions with the help of a navigation system and K-wires as guidance for the oscillating saw. METHODS Seven hemipelvises from fresh, human, male, full-body cadavers were used. A preoperative and a postoperative CT was performed. Under control of the navigation system K-wires were inserted and served as guidance for the oscillating saw to reduce the error by vibration and jerking movements. The accuracy of the computer aided resections was compared with the accuracy of freehand resections in customized 3D printed pelvises with geometries identical to the cadavers used. RESULTS The mean deviation of the navigated osteotomies was 1.9 mm (standard deviation 1.0 mm) significantly (P < 0.001) lower than the mean deviation of freehand osteotomies at 9.2 mm (standard deviation 3.7 mm). CONCLUSION Navigated K-wires for supra-acetabular osteotomies allow significantly higher accuracy than freehand procedures under simulated operation room conditions. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Lukas K Postl
- Clinic of Orthopaedics and Sportsorthopaedics, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Chlodwig Kirchhoff
- Clinic of Trauma Surgery, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Andreas Toepfer
- Clinic of Orthopaedics and Sportsorthopaedics, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Sonja Kirchhoff
- Institute of Clinical Radiology, Ludwig-Maximilians-Universitaet Muenchen, Munich, Germany
| | - Marcus Schmitt-Sody
- Department of Orthopedics, Munich University Hospital - Campus Großhadern, Ludwig- Maximilians Universitaet, Munich, Germany
| | - Rüdiger von Eisenhart-Rothe
- Clinic of Orthopaedics and Sportsorthopaedics, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Rainer Burgkart
- Clinic of Orthopaedics and Sportsorthopaedics, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
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Francq BG, Cartiaux O. Delta method and bootstrap in linear mixed models to estimate a proportion when no event is observed: application to intralesional resection in bone tumor surgery. Stat Med 2016; 35:3563-82. [PMID: 26990871 DOI: 10.1002/sim.6939] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 02/17/2016] [Accepted: 02/22/2016] [Indexed: 11/08/2022]
Abstract
Resecting bone tumors requires good cutting accuracy to reduce the occurrence of local recurrence. This issue is considerably reduced with a navigated technology. The estimation of extreme proportions is challenging especially with small or moderate sample sizes. When no success is observed, the commonly used binomial proportion confidence interval is not suitable while the rule of three provides a simple solution. Unfortunately, these approaches are unable to differentiate between different unobserved events. Different delta methods and bootstrap procedures are compared in univariate and linear mixed models with simulations and real data by assuming the normality. The delta method on the z-score and parametric bootstrap provide similar results but the delta method requires the estimation of the covariance matrix of the estimates. In mixed models, the observed Fisher information matrix with unbounded variance components should be preferred. The parametric bootstrap, easier to apply, outperforms the delta method for larger sample sizes but it may be time costly. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Bernard G Francq
- Institut de Statistique, Biostatistique et sciences Actuarielles, Université Catholique de Louvain, Voie du Roman Pays 20, 1348, Louvain-la-Neuve, Belgium.,Robertson Centre for Biostatistics, University of Glasgow, Glasgow, U.K
| | - Olivier Cartiaux
- Institut de Recherche Expérimentale et Clinique Computer Assisted and Robotic Surgery, Université Catholique de Louvain, Avenue Mounier 53, Bruxelles, 1200, Belgium
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33
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Chen X, Xu L, Wang Y, Hao Y, Wang L. Image-guided installation of 3D-printed patient-specific implant and its application in pelvic tumor resection and reconstruction surgery. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2016; 125:66-78. [PMID: 26652978 DOI: 10.1016/j.cmpb.2015.10.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/29/2015] [Accepted: 10/29/2015] [Indexed: 06/05/2023]
Abstract
Nowadays, the diagnosis and treatment of pelvic sarcoma pose a major surgical challenge for reconstruction in orthopedics. With the development of manufacturing technology, the metal 3D-printed customized implants have brought revolution for the limb-salvage resection and reconstruction surgery. However, the tumor resection is not without risk and the precise implant placement is very difficult due to the anatomic intricacies of the pelvis. In this study, a surgical navigation system including the implant calibration algorithm has been developed, so that the surgical instruments and the 3D-printed customized implant can be tracked and rendered on the computer screen in real time, minimizing the risks and improving the precision of the surgery. Both the phantom experiment and the pilot clinical case study presented the feasibility of our computer-aided surgical navigation system. According to the accuracy evaluation experiment, the precision of customized implant installation can be improved three to five times (TRE: 0.75±0.18 mm) compared with the non-navigated implant installation after the guided osteotomy (TRE: 3.13±1.28 mm), which means it is sufficient to meet the clinical requirements of the pelvic reconstruction. However, more clinical trials will be conducted in the future work for the validation of the reliability and efficiency of our navigation system.
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Affiliation(s)
- Xiaojun Chen
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China.
| | - Lu Xu
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yiping Wang
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yongqiang Hao
- Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liao Wang
- Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Visgauss JD, Eward WC, Brigman BE. Innovations in Intraoperative Tumor Visualization. Orthop Clin North Am 2016; 47:253-64. [PMID: 26614939 DOI: 10.1016/j.ocl.2015.08.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In the surgical management of solid tumors, adequacy of tumor resection has implications for local recurrence and survival. The standard method of intraoperative identification of tumor margin is frozen section pathologic analysis, which is time-consuming with potential for sampling error. Intraoperative tumor visualization has the potential to significantly improve surgical cancer care across disciplines, by guiding accuracy of biopsies, increasing adequacy of resections, directing adjuvant therapy, and even providing diagnostic information. We provide an outline of various methods of intraoperative tumor visualization developed to aid in the real-time assessment of tumor extent and adequacy of resection.
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Affiliation(s)
- Julia D Visgauss
- Department of Orthopaedic Surgery, Duke University, Box 3312 DUMC, Durham, NC 27710, USA
| | - William C Eward
- Department of Orthopaedic Surgery, Duke University, Box 3312 DUMC, Durham, NC 27710, USA
| | - Brian E Brigman
- Department of Orthopaedic Surgery, Duke University, Box 3312 DUMC, Durham, NC 27710, USA.
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35
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Farfalli GL, Albergo JI, Ritacco LE, Ayerza MA, Muscolo DL, Aponte-Tinao LA. Oncologic and clinical outcomes in pelvic primary bone sarcomas treated with limb salvage surgery. Musculoskelet Surg 2015; 99:237-242. [PMID: 26238978 DOI: 10.1007/s12306-015-0379-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 07/16/2015] [Indexed: 06/04/2023]
Abstract
PURPOSE We propose to study a group of patients with primary bone sarcoma of the pelvis treated with limb salvage surgery and analyze overall survival, local recurrence rates and functional outcomes. METHODS A retrospective review was performed, and all patients diagnosed with pelvic primary bone sarcomas between 1990 and 2012 were analyzed. Patients treated with limb salvage surgery and with a minimum of 12-month follow-up for patients alive were included. The overall survival and the local recurrence rate were calculated for the assessment of oncological results. The associations with gender, age, histological grade, type of surgery, margins chemotherapy response and use of navigation were examined. RESULTS Fifty-two patients were included in the study. The mean age was 37 years (range 10-82), and mean follow-up was 44 months (range 8-189). Forty-five (86 %) tumors were histologically classified as high-grade sarcomas, four (8 %) as low-grade sarcomas and three (6 %) as dedifferentiated sarcomas. Cancer-specific overall survival was 37.5 % for 5 years and 31 % for 10 years. Local recurrence rate was 30 %. High-grade tumors and chemotherapy necrosis below 90 % were negative prognosis factor. Postoperative complication rate was 34.5 % (n:18), being deep infection the most prevalent (n:13). Reconstruction of the pelvis after an oncology resection for primary pelvic sarcomas increased the incidence of complication significantly (p < 0.001). CONCLUSION Primary bone sarcomas involving the pelvis are suggestive of a high-grade tumor and present poor oncologic outcomes. Pelvic reconstruction after a limb salvage surgery is associated with a high risk of complication. LEVEL OF EVIDENCE Case series, Level IV.
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Affiliation(s)
- G L Farfalli
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina
| | - J I Albergo
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina.
| | - L E Ritacco
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina
| | - M A Ayerza
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina
| | - D L Muscolo
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina
| | - L A Aponte-Tinao
- Hospital Italiano de Buenos Aires. Carlos E. Ottolenghi Institute of Orthopedics, Potosí 4247, C1199ABD, Buenos Aires, Argentina
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36
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Richter PH, Yarboro S, Kraus M, Gebhard F. One year orthopaedic trauma experience using an advanced interdisciplinary hybrid operating room. Injury 2015; 46 Suppl 4:S129-34. [PMID: 26542859 DOI: 10.1016/s0020-1383(15)30032-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Hybrid operating rooms have been used successfully in several surgical specialties, but no data have been published for orthopaedic trauma. We present our one-year orthopaedic trauma experience using a hybrid operating room, which incorporates 3D fluoroscopic imaging as well as navigation capabilities. Data were compiled for a series of 92 cases performed in an advanced hybrid operating room at the level one trauma center in Ulm, Germany. All patients who had surgery performed using this operating room during the first year were included. Setup time and surgical complications using hybrid operating room were recorded and analysed. The hybrid operating room resulted in no higher rate of complication than expected from the same cases in a conventional operating room. The hybrid room did however allow the surgeon to confidently place implants for orthopaedic trauma cases, and was most advantageous for spine and pelvis cases, both minimally invasive and conventional. Further, appropriate reduction and implant position was confirmed with 3D imaging prior to leaving the operating room and obviated the need for postoperative CT scan. Based on our one-year experience, the hybrid operating room is a useful and safe tool for orthopaedic trauma surgery.
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Affiliation(s)
| | - Seth Yarboro
- University of Virginia; Charlottesville, Virginia, United States
| | - Michael Kraus
- Donau-Ries Hospital Donauwörth; Donauwoerth, Germany
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37
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Patient-specific instrument can achieve same accuracy with less resection time than navigation assistance in periacetabular pelvic tumor surgery: a cadaveric study. Int J Comput Assist Radiol Surg 2015; 11:307-16. [PMID: 26148694 DOI: 10.1007/s11548-015-1250-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 06/17/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE Inaccurate resection in pelvic tumors can result in compromised margins with increase local recurrence. Navigation-assisted and patient-specific instrument (PSI) techniques have recently been reported in assisting pelvic tumor surgery with the tendency of improving surgical accuracy. We examined and compared the accuracy of transferring a virtual pelvic resection plan to actual surgery using navigation-assisted or PSI technique in a cadaver study. METHODS We performed CT scan in twelve cadaveric bodies including whole pelvic bones. Either supraacetabular or partial acetabular resection was virtually planned in a hemipelvis using engineering software. The virtual resection plan was transferred to a CT-based navigation system or was used for design and fabrication of PSI. Pelvic resections were performed using navigation assistance in six cadavers and PSI in another six. Post-resection images were co-registered with preoperative planning for comparative analysis of resection accuracy in the two techniques. RESULTS The mean average deviation error from the planned resection was no different ([Formula: see text]) for the navigation and the PSI groups: 1.9 versus 1.4 mm, respectively. The mean time required for the bone resection was greater ([Formula: see text]) for the navigation group than for the PSI group: 16.2 versus 1.1 min, respectively. CONCLUSIONS In simulated periacetabular pelvic tumor resections, PSI technique enabled surgeons to reproduce the virtual surgical plan with similar accuracy but with less bone resection time when compared with navigation assistance. Further studies are required to investigate the clinical benefits of PSI technique in pelvic tumor surgery.
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38
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Abstract
Bone tumor surgery is extremely challenging, particularly when tumors are located in tightly confined anatomical areas and abutting critical organs and neurovascular structures. Tumor resection requires good cutting accuracy to ensure safety, to achieve negative margins, and to preserve critical structures when possible. The purpose of this paper was to review the literature on the surgical advances for bone tumor surgery published within the last year. The majority of literature identified focused on computer-assisted surgical approaches. There is increasing evidence that 3D navigation plays an important role in the resection of bone tumors. Reconstruction materials that encourage healing and prevent infections are also in development. Optimal care includes execution of a well-developed pre-operative plan using a multidisciplinary approach led by the orthopaedic oncologist.
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Affiliation(s)
- Justin E Bird
- MD Anderson Cancer Center, 1400 Pressler St. Suite FCT 10.5054, Houston, TX, 77030, USA,
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Sternheim A, Daly M, Qiu J, Weersink R, Chan H, Jaffray D, Irish JC, Ferguson PC, Wunder JS. Navigated pelvic osteotomy and tumor resection: a study assessing the accuracy and reproducibility of resection planes in Sawbones and cadavers. J Bone Joint Surg Am 2015; 97:40-6. [PMID: 25568393 DOI: 10.2106/jbjs.n.00276] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND This Sawbones and cadaver study was performed to assess the accuracy and reproducibility of pelvic bone cuts made with use of a novel navigation system with a navigated osteotome and oscillating saw. METHODS Using a novel navigation system and a three-dimensional planning tool, we navigated pelvic bone cuts that were representative of typical cuts made in pelvic tumor resections. The system includes a prototype mobile C-arm for intraoperative cone-beam computed tomography, real-time optical tracking (Polaris), and three-dimensional visualization software. Three-dimensional virtual radiographs were utilized in addition to triplanar (axial, sagittal, and coronal) navigation. In part one of the study, we navigated twenty-four sacral bone cuts in Sawbones models and validated our results in sixteen similar cuts in cadavers. In part two, we developed three Sawbones models of pelvic tumors based on actual patient scenarios and compared three navigated resections with three non-navigated resections for each tumor model. Part three assessed the accuracy of the system with multiple users. RESULTS There were ninety navigated cuts in Sawbones that were compared with fifty-four non-navigated cuts. In the navigated Sawbones cuts, the mean entry and exit cuts were 1.4 ± 1 mm and 1.9 ± 1.2 mm from the planned cuts, respectively. In comparison, the entry and exit cuts in Sawbones that were not navigated were 2.8 ± 4.9 mm and 3.5 ± 4.6 mm away from the planned osteotomy site. The navigated cuts were significantly more accurate (p ≤ 0.01). In the cadaver study, navigated entry and exit cuts were 1.5 ± 0.9 mm and 2.1 ± 1.5 mm from the planned cuts. The variation among three different users was 1 mm on both the entry and exit cuts. CONCLUSIONS Navigation to guide pelvic bone cuts is accurate and feasible. Three-dimensional radiographs should be used for improved accuracy. Navigated cuts were significantly more accurate than non-navigated cuts were. A margin of 5 mm between the target tumor volume and the planned cut plane would result in a negative margin resection in more than 95% of the cuts. CLINICAL RELEVANCE The accuracy of pelvic bone tumor resections and pelvic osteotomies can be improved with navigation to within 5 mm of the planned cut.
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Affiliation(s)
- Amir Sternheim
- Division of Orthopaedic Surgery, Mount Sinai Hospital, 600 University Avenue, Room 476, Toronto, ON M5G 1X5, Canada. E-mail address for A. Sternheim: . E-mail address for J.S. Wunder:
| | - Michael Daly
- GTx Core-Techna Institute, University Health Network, 101 College Street, 7-1001, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada. E-mail address for M. Daly: . E-mail address for J. Qiu: . E-mail address for R. Weersink: . E-mail address for H. Chan:
| | - Jimmy Qiu
- GTx Core-Techna Institute, University Health Network, 101 College Street, 7-1001, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada. E-mail address for M. Daly: . E-mail address for J. Qiu: . E-mail address for R. Weersink: . E-mail address for H. Chan:
| | - Robert Weersink
- GTx Core-Techna Institute, University Health Network, 101 College Street, 7-1001, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada. E-mail address for M. Daly: . E-mail address for J. Qiu: . E-mail address for R. Weersink: . E-mail address for H. Chan:
| | - Harley Chan
- GTx Core-Techna Institute, University Health Network, 101 College Street, 7-1001, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada. E-mail address for M. Daly: . E-mail address for J. Qiu: . E-mail address for R. Weersink: . E-mail address for H. Chan:
| | - David Jaffray
- Ontario Cancer Institute, 610 University Avenue, 5-631, Toronto, ON M5G 1X5, Canada. E-mail address:
| | - Jonathan C Irish
- Department of Otolaryngology-Head and Neck Surgery, Princess Margaret Cancer Centre, 610 University Avenue, 3-954, Toronto, ON M5G 2M9, Canada. E-mail address:
| | - Peter C Ferguson
- Department of Surgery, Mount Sinai Hospital, 600 University Avenue, Suite 476G, Toronto, ON M5G 1X5, Canada. E-mail address:
| | - Jay S Wunder
- Division of Orthopaedic Surgery, Mount Sinai Hospital, 600 University Avenue, Room 476, Toronto, ON M5G 1X5, Canada. E-mail address for A. Sternheim: . E-mail address for J.S. Wunder:
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Computer-Assisted Planning and Patient-Specific Instruments for Bone Tumor Resection within the Pelvis: A Series of 11 Patients. Sarcoma 2014; 2014:842709. [PMID: 25100921 PMCID: PMC4101950 DOI: 10.1155/2014/842709] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 06/09/2014] [Accepted: 06/09/2014] [Indexed: 12/15/2022] Open
Abstract
Pelvic bone tumor resection is challenging due to complex geometry, limited visibility, and restricted workspace. Accurate resection including a safe margin is required to decrease the risk of local recurrence. This clinical study reports 11 cases of pelvic bone tumor resected by using patient-specific instruments. Magnetic resonance imaging was used to delineate the tumor and computerized tomography to localize it in 3D. Resection planning consisted in desired cutting planes around the tumor including a safe margin. The instruments were designed to fit into unique position on the bony structure and to indicate the desired resection planes. Intraoperatively, instruments were positioned freehand by the surgeon and bone cutting was performed with an oscillating saw. Histopathological analysis of resected specimens showed tumor-free bone resection margins for all cases. Available postoperative computed tomography was registered to preoperative computed tomography to measure location accuracy (minimal distance between an achieved and desired cut planes) and errors on safe margin (minimal distance between the achieved cut planes and the tumor boundary). The location accuracy averaged 2.5 mm. Errors in safe margin averaged −0.8 mm. Instruments described in this study may improve bone tumor surgery within the pelvis by providing good cutting accuracy and clinically acceptable margins.
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Abstract
The use of computer navigation was first described in the surgical resection of pelvic tumors in 2004. It was developed to improve surgical accuracy with the goal of achieving clear resection margins and better oncologic results. During the past few years, there has been tremendous advancement of computer-assisted tumor surgery (CATS) in the field of orthopedic oncology. Currently, CATS with image fusion offers preoperative three-dimensional surgical planning and allows surgeons to reproduce the intended bone resections in musculoskeletal tumors. The technique is reported to be useful in technically demanding resections, such as in pelvic and sacral tumors; joint-preserving intercalated and multiplanar tumor resection; and complex reconstruction with custom computer-aided design prostheses or allografts. This article provides an up-to-date review of the recent developments and key features in CATS, its current status in clinical practice, and future directions in its development.
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Affiliation(s)
- Kwok-Chuen Wong
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Shatin, Hong Kong
| | - Shekhar-Madhukar Kumta
- Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
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Abstract
Osteosarcoma is a malignant tumor that primarily affects the long bones but can also involve other bones in the body. It has a bimodal distribution with peaks in the second decade of life and late adulthood. This chapter will highlight the clinical presentation, diagnosis, and treatment of osteosarcoma.
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Abstract
Computer-assisted orthopedic surgery (CAOS) was introduced, developed, and implemented in musculoskeletal tumor surgery recently to enhance surgical precision in resecting malignant and benign tumors. The origins of computer-assisted surgery were in other subspecialties including maxillofacial surgery, spine surgery, and arthroplasty. Early studies have shown that CAOS can also be used safely for bone tumor resection surgery. Additional technological improvements may allow use of CAOS in soft tissue tumor surgery. It has the potential to improve surgical precision and accuracy, but more study is needed to evaluate clinical efficacy and long term results.
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Affiliation(s)
- Robert L Satcher
- Department of Orthopaedic Oncology, MD Anderson Cancer Center, 1400 Pressler Street, Unit 1448, Houston, TX 77030, USA.
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Improved accuracy with 3D planning and patient-specific instruments during simulated pelvic bone tumor surgery. Ann Biomed Eng 2013; 42:205-13. [PMID: 23963884 DOI: 10.1007/s10439-013-0890-7] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 08/07/2013] [Indexed: 10/26/2022]
Abstract
In orthopaedic surgery, resection of pelvic bone tumors can be inaccurate due to complex geometry, limited visibility and restricted working space of the pelvis. The present study investigated accuracy of patient-specific instrumentation (PSI) for bone-cutting during simulated tumor surgery within the pelvis. A synthetic pelvic bone model was imaged using a CT-scanner. The set of images was reconstructed in 3D and resection of a simulated periacetabular tumor was defined with four target planes (ischium, pubis, anterior ilium, and posterior ilium) with a 10-mm desired safe margin. Patient-specific instruments for bone-cutting were designed and manufactured using rapid-prototyping technology. Twenty-four surgeons (10 senior and 14 junior) were asked to perform tumor resection. After cutting, ISO1101 location and flatness parameters, achieved surgical margins and the time were measured. With PSI, the location accuracy of the cut planes with respect to the target planes averaged 1 and 1.2 mm in the anterior and posterior ilium, 2 mm in the pubis and 3.7 mm in the ischium (p < 0.0001). Results in terms of the location of the cut planes and the achieved surgical margins did not reveal any significant difference between senior and junior surgeons (p = 0.2214 and 0.8449, respectively). The maximum differences between the achieved margins and the 10-mm desired safe margin were found in the pubis (3.1 and 5.1 mm for senior and junior surgeons respectively). Of the 24 simulated resection, there was no intralesional tumor cutting. This study demonstrates that using PSI technology during simulated bone cuts of the pelvis can provide good cutting accuracy. Compared to a previous report on computer assistance for pelvic bone cutting, PSI technology clearly demonstrates an equivalent value-added for bone cutting accuracy than navigation technology. When in vivo validated, PSI technology may improve pelvic bone tumor surgery by providing clinically acceptable margins.
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