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Gao YY, Zhang R, Che XD, Wang CF, Shi DP, Liang B, Li PH, Liang SF, Li PC. WITHDRAWN: Comparison of the accuracy between imageless navigation and manual freehand approaches for total hip arthroplasty: a systematic review and meta-analysis. Chin J Traumatol 2020:S1008-1275(20)30180-2. [PMID: 33008740 DOI: 10.1016/j.cjtee.2020.09.003] [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: 11/27/2019] [Revised: 04/07/2020] [Accepted: 06/06/2020] [Indexed: 02/04/2023] Open
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Yang-Yang Gao
- Department of Orthopaedic Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Rong Zhang
- Department of Oncology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, 046000, Shanxi, China
| | - Xian-Da Che
- Department of Orthopaedic Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Chun-Fang Wang
- Department of Experimental Animal Center, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Dong-Ping Shi
- Department of Nephrology, Fenyang Hospital of Shanxi Province, Fenyang, 032200, Shanxi, China
| | - Bin Liang
- Department of Orthopaedic Surgery, Fenyang Hospital of Shanxi Province, Fenyang, 032200, Shanxi, China
| | - Peng-Hua Li
- Department of Laboratory, Fenyang Hospital of Shanxi Province, Fenyang, 032200, Shanxi, China
| | - Shu-Fen Liang
- Department of Laboratory, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Peng-Cui Li
- Department of Orthopaedic Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
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Wang G, Guo A, Yu F, Yang B, Yu H, Diao N, Ma L, Qiang H, Zhao E. A simple method to minimize leg length discrepancy in hip hemiarthroplasty. Clin Interv Aging 2019; 14:1601-1605. [PMID: 31564842 PMCID: PMC6733254 DOI: 10.2147/cia.s214935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/18/2019] [Indexed: 12/03/2022] Open
Abstract
Purpose We developed a simple method to minimize leg length discrepancy (LLD) during hip arthroplasty. The purpose of this study is to evaluate the accuracy of the method. Patients and methods A total of 47 patients who suffered from unilateral femoral neck fracture and underwent hip hemiarthroplasty between 2015 and 2018 were enrolled in this study. We measured the diameter of the contralateral femoral head (D) and the distance (L) between the center of the femoral head and the top of lesser trochanter in the antero-posterior pelvic X-ray view before the operation, the ratio (R) of D to L was calculated. During the operation, the diameter of the femoral head (d) was measured using a Vernier caliper. Then, the distance should be obtained from the center of the femoral head prosthesis to the lesser trochanter was calculated according to the contralateral ratio R. Results The mean LLD was 4.4±3.2 mm (−4.0 to 11.1 mm), 80.9% of the patients had LLD <6 mm, 93.6% of the patients with LLD <10 mm, only 6.4% ≥10 mm LLD. Conclusion This method is a simple, cost-effective, fast and accurate way to reduce the postoperative leg length discrepancy.
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Affiliation(s)
- Guodong Wang
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China.,Department of Orthopaedics, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, People's Republic of China
| | - Ai Guo
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Fei Yu
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Bo Yang
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Haomiao Yu
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Naicheng Diao
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Lifeng Ma
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, People's Republic of China
| | - Hua Qiang
- Department of Orthopaedics, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, People's Republic of China
| | - Erhong Zhao
- Department of Orthopaedics, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, People's Republic of China
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Ulivi M, Orlandini LC, Meroni V, Castoldi D, Lombardo MDM, Peretti GM. Intraoperative validation of bone cut accuracy of a pinless smart touch-screen navigation system device in total knee arthroplasty. Int J Med Robot 2019; 15:e2030. [PMID: 31379057 DOI: 10.1002/rcs.2030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/19/2019] [Accepted: 07/28/2019] [Indexed: 11/08/2022]
Abstract
PURPOSE Primary objective in most of the published literature on computer-assisted total knee arthroplasty (TKA) has so far been the comparison of axial alignment and components position, obtained either through navigation systems or through conventional instrumentation. We have found no studies aimed at assessing the intraoperative reliability of a navigation system in relation to bone cuts height. Aim of our study was therefore to establish bone cut accuracy of a pinless navigation system. METHODS From January 2014 to February 2016, 44 consecutive patients requiring total knee replacement (TKR) were enrolled in a prospective study. Primary end point of the study was to assess the accuracy of the DASH iPOD TOUCH Navigation System (Brainlab AG, Feldkirchen, Germany) by measuring the real thickness of both tibial and femoral osteotomies. We compared the data indicated by the navigation system with the intraoperative anatomical measurements done with the aid of a caliper. In addition, the radiographic alignment was compared with the data derived from the navigator. RESULTS The device proved to be precise. Differences between the two methods of measurement are distributed over a millimeter range. Radiological measurements showed that 95.5% of tibial components were within the range of 3° varus/valgus; same results were obtained by the navigation system; instead, 90.1% of femoral components were within the range of 3° varus/valgus based on the radiological measurement, whereas according to the navigation system, 86.4% were in this range. CONCLUSIONS The DASH iPOD TOUCH Navigation System is a precise and reliable instrument to assist in TKA navigation.
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Affiliation(s)
| | | | | | - Daniele Castoldi
- Residency Program in Orthopedics and Traumatology, University of Milan, Milan, Italy
| | | | - Giuseppe M Peretti
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.,Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
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Schmidt M, Prietzel T, Wendler T, Möbius R, Schleifenbaum S, Hammer N, Grunert R. Verification of a novel measuring method for determining pre- and postoperative leg length in the context of total hip arthroplasty: a technical feasibility study. J Med Eng Technol 2019; 42:588-594. [PMID: 30942642 DOI: 10.1080/03091902.2019.1579263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Following total hip arthroplasty (THA), leg length can easily be modified, for example by different-sized endoprosthetic components. Currently, precise reconstruction depends mainly on the assessment of the surgeon. The aim of this study was to determine the accuracy of a new optical measuring system (OMS) using a novel measuring method capable of determining changes in leg length. Measurements with different investigators on an artificial leg and under clinical conditions were carried out. Measurements under clinical conditions were accomplished with a human body donor before and following prosthetic hip implantation. Furthermore, computed tomography (CT) was used to compare the function and the precision of the OMS relating to established measuring methods. The following results were achieved. The overall mean result of preoperative leg length determination by the OMS was 775.3 ± 5.8 mm (CT: 786.4 mm). The overall mean result of postoperative leg length determination by the OMS was 776.9 ± 10.8 mm (CT: 795.0mm). Measurements carried out showed that the novel measuring method works in principle. However, the viable prototype based on it has a lower accuracy compared to CT-based reference measurements, indicating the necessity of integrating more precise hardware.
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Affiliation(s)
- Michael Schmidt
- a ZESBO - Center for Research on Musculoskeletal Systems , University of Leipzig , Leipzig , Germany.,b Department of Orthopaedic, Trauma and Plastic Surgery , University of Leipzig , Leipzig , Germany
| | - Torsten Prietzel
- c Department of Orthopaedic and Trauma Surgery , HELIOS Clinic Blankenhain , Blankenhain , Germany
| | - Toni Wendler
- a ZESBO - Center for Research on Musculoskeletal Systems , University of Leipzig , Leipzig , Germany.,b Department of Orthopaedic, Trauma and Plastic Surgery , University of Leipzig , Leipzig , Germany
| | - Robert Möbius
- a ZESBO - Center for Research on Musculoskeletal Systems , University of Leipzig , Leipzig , Germany.,b Department of Orthopaedic, Trauma and Plastic Surgery , University of Leipzig , Leipzig , Germany
| | - Stefan Schleifenbaum
- a ZESBO - Center for Research on Musculoskeletal Systems , University of Leipzig , Leipzig , Germany.,b Department of Orthopaedic, Trauma and Plastic Surgery , University of Leipzig , Leipzig , Germany
| | - Niels Hammer
- b Department of Orthopaedic, Trauma and Plastic Surgery , University of Leipzig , Leipzig , Germany.,d Department of Anatomy , University of Otago , Dunedin , New Zealand.,e Fraunhofer Institute for Machine Tools and Forming Technology, Fraunhofer IWU , Dresden , Germany
| | - Ronny Grunert
- a ZESBO - Center for Research on Musculoskeletal Systems , University of Leipzig , Leipzig , Germany.,e Fraunhofer Institute for Machine Tools and Forming Technology, Fraunhofer IWU , Dresden , Germany
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Comparison of the reliability of leg length and offset data generated by three hip replacement CAOS systems using EOS™ imaging. Orthop Traumatol Surg Res 2015; 101:647-53. [PMID: 26300455 DOI: 10.1016/j.otsr.2015.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/15/2015] [Accepted: 07/03/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Computer-assisted orthopaedic surgery (CAOS) theoretically will help to optimise total hip arthroplasty (THA) results. Although CAOS systems have become more sophisticated, they are not widely used, partially because of their suspect reliability. To assess reliability of these systems, we carried out a study with multiple objectives in mind: (1) establish and compare the accuracy of the leg length (LL) measurement from three CAOS systems; (2) analyse the correlation of LL and offset data generated by these CAOS systems with those of the EOS™ imaging system; (3) determine if the goals of leg length restoration with ±2 and ±5 mm were achieved; (4) evaluate why certain cases fails. HYPOTHESIS The three CAOS systems have the same accuracy for LL, and their error is less than or equal to 0.6mm. MATERIAL AND METHODS We retrospectively studied 106 cases of primary THA where preoperative and postoperative measures of leg length had been performed with an EOS™ imaging system. The cases were placed in three groups, depending on which CAOS system had been used: group A (Amplivision™, amplitude), group B (Hip Express™, Brainlab), group P (THS™, Praxim). The accuracy of the leg length data was calculated by finding the difference between the data from each CAOS system and the gold-standard EOS measurements. RESULTS The leg length accuracy was -0.846 [-5 to 9], -0.675 [-9 to 18] and 0.542 mm [-5 to 13], respectively for groups A, B and P. The accuracy was significantly lower in group A than B (P=0.044) and group P (P=0.038). The Pearson correlation coefficient for CAOS and EOS measurements was 0.189, 0.701 and 0.891 for leg length and 0.668, 0.202 and 0.680 for offset, for groups A, B and P, respectively. No difference between groups were observed relative to the leg length objectives being achieved within ±2 mm (P=0.61) and ±5 mm (P=0.314). There were no differences in terms of the number of CAOS failures: three in group A, one in group B and three in group P (P=0.06). CONCLUSION The Praxim™ and Brainlab™ CAOS systems had similar accuracy for leg length measurements, and both were better than the Amplitude™ system. Only the Praxim™ had an error of less than 0.6mm. All the CAOS systems had values less than 1mm, which is considered excellent. LEVEL OF EVIDENCE Level IV, retrospective study.
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