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Lex JR, Pincus D, Paterson JM, Widdifield J, Chaudhry H, Fowler R, Hawker G, Ravi B. Association between immigration status and total knee arthroplasty outcomes in Ontario, Canada: a population-based matched cohort study. Can J Surg 2024; 67:E228-E235. [PMID: 38729643 PMCID: PMC11090629 DOI: 10.1503/cjs.013723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Immigrants and refugees face unique challenges navigating the health care system to manage severe arthritis, because of unfamiliarity, lack of awareness of surgical options, or access. The purpose of this study was to assess total knee arthroplasty (TKA) uptake, surgical outcomes, and hospital utilization among immigrants and refugees compared with Canadian-born patients. METHODS We included all adults undergoing primary TKA from January 2011 to December 2020 in Ontario. Cohorts were defined as Canadian-born or immigrants and refugees. We assessed change in yearly TKA utilization for trend. We compared differences in 1-year revision, infection rates, 30-day venous thromboembolism (VTE), presentation to emergency department, and hospital readmission between matched Canadian-born and immigrant and refugee groups. RESULTS We included 158 031 TKA procedures. A total of 11 973 (7.6%) patients were in the immigrant and refugee group, and 146 058 (92.4%) patients were in the Canadian-born group. The proportion of TKAs in Ontario performed among immigrants and refugees nearly doubled over the 10-year study period (p < 0.001). After matching, immigrants were at relatively lower risk of 1-year revision (0.9% v. 1.6%, p < 0.001), infection (p < 0.001), death (p = 0.004), and surgical complications (p < 0.001). No differences were observed in rates of 30-day VTE or length of hospital stay. Immigrants were more likely to be discharged to rehabilitation (p < 0.001) and less likely to present to the emergency department (p < 0.001) than Canadian-born patients. CONCLUSION Compared with Canadian-born patients, immigrants and refugees have favourable surgical outcomes and similar rates of resource utilization after TKA. We observed an underutilization of these procedures in Ontario relative to their proportion of the population. This may reflect differences in perceptions of chronic pain or barriers accessing arthroplasty.
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Affiliation(s)
- Johnathan R Lex
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Daniel Pincus
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - J Michael Paterson
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Jessica Widdifield
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Harman Chaudhry
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Rob Fowler
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Gillian Hawker
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
| | - Bheeshma Ravi
- From the Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont. (Lex, Pincus, Chaudhry, Ravi); the Orthopaedic Biomechanics Laboratory, Sunnybrook Research Institute, Toronto, Ont. (Lex); the Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont. (Pincus, Chaudhry); ICES, Toronto, Ont. (Paterson, Widdifield); the Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont. (Paterson, Widdifield, Fowler, Hawker); the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ont. (Fowler, Ravi); the Department of Medicine, University of Toronto, Toronto, Ont. (Hawker)
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Carman L, Besier T, Stott NS, Choisne J. Sex differences in linear bone measurements occur following puberty but do not influence femoral or tibial torsion. Sci Rep 2023; 13:11733. [PMID: 37474546 PMCID: PMC10359265 DOI: 10.1038/s41598-023-38783-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023] Open
Abstract
Torsional, angular, and linear measurements in a paediatric population are clinically important but not well defined and understood. Different methods of measurement and discrepancies between assessors leads to a lack of understanding of what should be defined as typical or atypical for the growing skeleton. From a large dataset of 333 paediatric CT scans, we extracted three-dimensional torsional, angular, and linear measurements from the pelvis, femur, and tibia/fibula. Sex differences in linear measurements were observed in bones of children aged 13+ (around puberty), but femoral and tibial torsion were similar between males and females. The rotational profile (femoral anteversion minus tibial torsion) tended to increase with growth. Epicondylar, condylar, and malleolar widths were smaller in females than males for the same bone length after the age of 13 years, which could explain why females may be more at risk for sport injuries during adolescence. This rich dataset can be used as an atlas for researchers and clinicians to understand typical development of critical rotational profiles and linear bone measurements in children.
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Affiliation(s)
- Laura Carman
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Thor Besier
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
- Department of Engineering Science, The University of Auckland, Auckland, New Zealand
| | - N Susan Stott
- Department of Surgery, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Julie Choisne
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
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Qiao Y, Xu J, Zhang X, Ye Z, Wu C, Xu C, Zhao S, Zhao J. Correlation of Tibial Torsion With Lower Limb Alignment and Femoral Anteversion in Patients With Patellar Instability. Orthop J Sports Med 2022; 10:23259671221141484. [PMID: 36532155 PMCID: PMC9747878 DOI: 10.1177/23259671221141484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/13/2022] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Alignment and rotation of the lower extremities have been suggested to be predisposing pathologic factors for patellar instability. PURPOSE To elucidate the relationship between the lower limb alignment and lower extremity rotation in patients with patellar instability. STUDY DESIGN Cross-sectional study; Level of evidence, 3. METHODS Included were 83 patients with patellar instability. Computed tomography scans and standing full-leg radiographs were used to measure the tibial tuberosity-trochlear groove (TT-TG) distance, mechanical femorotibial angle (mFTA), mechanical lateral distal femoral angle (mLDFA), mechanical medial proximal tibial angle (mMPTA), femoral torsion, and tibial torsion of the different segments. The relationships between femoral torsion, tibial torsion of the different segments, and the mFTA, mLDFA, and mMPTA were evaluated. The levels of tibial torsion and femoral torsion in patients with varus, normal, or valgus alignment were compared with 1-way analysis of variance and chi-square test. RESULTS The total tibial torsion was significantly associated with total femoral anteversion (r = 0.329; P = .002) and mFTA (r = -0.304; P = .005). There were no significant correlations between mFTA and TT-TG distance or femoral anteversion. Compared with patients with valgus malalignment, patients with varus malalignment tended to have higher tibial torsion. CONCLUSION Tibial torsion was associated with leg axis alignment and femoral anteversion in patients with patellar instability. Patients with patellar instability, especially those with concurrent leg axis deformities, should undergo further radiological imaging so that tibial torsion can be assessed and a diagnosis of torsion deformity made early in the treatment pathway and the proper surgical plan formulated.
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Affiliation(s)
- Yi Qiao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junjie Xu
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiuyuan Zhang
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zipeng Ye
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chenliang Wu
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Caiqi Xu
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Song Zhao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinzhong Zhao
- Department of Sports Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Bernstein M, Bunge T, Rosinski K, Kfuri M, Crist B, Knapp A, Vaidya R. Online Instruction to Measure Axial Alignment with the Bonesetter App. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58081079. [PMID: 36013547 PMCID: PMC9415140 DOI: 10.3390/medicina58081079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022]
Abstract
Background and objectives: Alignment of the lower extremity is important when treating congenital deformities, fractures, and joint replacement. During the COVID-19 pandemic, AO North America offered an online course on deformity measurement and planning. The Bonesetter app is a deformity planning tool that is freely available online. The purpose of this study was to see how effective an online course was in teaching axial alignment measurement and to assess that skill using an online digital planning tool, the Bonesetter app. Materials and Methods: An online module on axial alignment was provided during the AONA osteotomy course as well as a tutorial on how to use an online digital planning tool (Bonesetter app). The tools within the Bonesetter app allow users to draw digital lines directly on the CT images and measure the exact angle between two planes. Participants in this study were directed to perform these measurements in four different cases that tested different variations of deformity. Results: The measurements were completed correctly in case 1 = 56%, case 2 = 61%, case 3 = 84%, and case 4 = 76%. The standard deviation of angular digital measurements between individuals was ±4.26 degrees. Measuring the angle directly vs. drawing angles to a horizontal line had smaller standard deviations per case (p < 0.005) and less incidents outside 1 standard deviation for each measurement. Errors in adding and subtracting were the most common errors, particularly in relation to femoral anteversion or retroversion. Conclusions: The online course successfully instructed a group of orthopedic surgeons to measure alignment and malalignment of lower limb axial deformities. The Bonesetter app helped participants to learn this skill and identify errors in measurement. The inability to differentiate between anteversion and retroversion of the femur is a common source of error when it occurs and should be a focus of instruction.
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Affiliation(s)
- Mitchell Bernstein
- Department of Orthopedic Surgery, McGill University, Montreal, QC H3A 0G4, Canada
| | - Tatiana Bunge
- Department of Orthopedic Surgery, Detroit Medical Center, Detroit, MI 48124, USA
| | - Kadence Rosinski
- Department of Orthopedic Surgery, Detroit Medical Center, Detroit, MI 48124, USA
| | - Mauricio Kfuri
- Department of Orthopedic Surgery, University of Missouri, Columbia, MO 65211, USA
| | - Brett Crist
- Department of Orthopedic Surgery, University of Missouri, Columbia, MO 65211, USA
| | - Andrew Knapp
- Department of Orthopedic Surgery, Detroit Medical Center, Detroit, MI 48124, USA
| | - Rahul Vaidya
- Department of Orthopedic Surgery, Detroit Medical Center, Detroit, MI 48124, USA
- Correspondence:
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Qiao Y, Zhang X, Xu J, Xu C, Zhao S, Zhao J. Internal Torsion of the Knee: An Embodiment of Lower-Extremity Malrotation in Patients with Patellar Instability. J Bone Joint Surg Am 2022; 104:1179-1187. [PMID: 35793796 DOI: 10.2106/jbjs.21.00957] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Torsion of the lower extremities has been suggested to be a predisposing factor for patellar instability. However, no clear torsional factors have been clarified. This study aimed to elucidate the rotational geometry of the lower limb through segmental analysis in patients with patellar instability. METHODS Eighty-three patients with patellar instability were included. Computed tomography of the lower limb was acquired. Femoral and tibial torsion were measured in different segments. Femoral and tibial torsion in each segment was compared between the high- and normal-torsion groups to investigate which segment contributes the most. RESULTS All segments of femoral and tibial torsion except proximal femoral torsion showed significant differences between the high- and normal-torsion groups. The average proximal femoral torsion was 1.9° ± 7.1°, indicating that there was only slight torsion in the segment of the femoral neck. The angle between the femoral neck and the foot orientation in the normal-torsion, high-torsion tibial, and combined high-torsion femoral and tibial groups was 89.1° ± 12.0°, 81.3° ± 9.4°, and 98.2° ± 11.7°, respectively (p < 0.001), which suggested that the femoral neck remained nearly perpendicular to the foot orientation in the normal-torsion group. Shaft and distal femoral torsion contributed the most to total femoral torsion. For tibial torsion, from distal to proximal, internal torsion of both the proximal and distal segments contributed to the high torsion. There was no significant difference between distal femoral torsion and proximal tibial torsion, which suggested that, rather than the distal femur rotating internally on its own, the distal femur and the proximal tibia simultaneously rotated internally. CONCLUSIONS In patients with patellar instability, torsional deformity occurs along the length of the tibia and in the shaft and distal segments of the femur. The comprehensive embodiment of lower-extremity malrotation is an internal rotation deformity of the knee. CLINICAL RELEVANCE This study elucidated the rotational geometry of the lower limb through a detailed segmental analysis in patients with patellar instability. It could serve as a theoretical basis for choosing a derotational osteotomy site and may be a reference for additional clinical research.
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Affiliation(s)
- Yi Qiao
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
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Heimer CYW, Göhler F, Vosseller JT, Hardt S, Perka C, Bäcker HC. Rotational abnormalities in dysplastic hips and how to predict acetabular torsion. Eur Radiol 2022; 32:8350-8363. [PMID: 35678855 DOI: 10.1007/s00330-022-08895-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/02/2022] [Accepted: 05/18/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The aim of this study was to investigate the degree to which conventional radiography can represent the acetabular and femoral rotational alignment profile between dysplastic and borderline-dysplastic hips. METHODS A retrospective trial was conducted including 56 borderline-dysplastic and dysplastic hips at a mean age of 28.9 years (range from 18 to 46). Inclusion criteria consisted of symptomatic patients with hip dysplasia undergoing 2-dimensional radiography as well as computed tomography. On radiography, the lateral center edge angle, acetabular hip index, hip lateralization index, acetabular index angle, and the Sharp angle were measured, and the presence of a crossover sign was noted. In computed tomography, the full rotational profile of the lower limb was measured. RESULTS Significant correlations were observed in the overall analysis between the anteversion of the acetabulum and the hip lateralization index (mean 0.56, coefficient of regression (CoR) -32.35, p = 0.011) as well as the acetabular index angle with a mean of 11.50 (CoR 0.544, p = 0.018). Similar results were found in the subgroup of dysplastic hips with an acetabular index angle of 13.9 (p = 0.013, CoR 0.74). For the borderline-dysplastic group, no significant correlations between the pelvis radiography and rotational CT were seen. CONCLUSION Although the femoral and acetabular torsion cannot be predicted from x-rays, the anteversion of the acetabulum correlates with the acetabular index angle, the hip lateralization index, and eventually the beta angle in dysplastic hips. For borderline-dysplastic hips, such results did not show up, which strongly illustrates the need for computed tomography in these cases. KEY POINTS • Much of the current literature focuses on rotational alignment especially with respect to the femur and tibia in healthy patients, although little is known about the acetabular, femoral, and tibial torsion in dysplastic hips. • This is the first study showing significant correlations between the anteversion of the acetabulum and the hip lateralization index as well as the acetabular inclination angle. Also, it is the first study to provide a mechanism for estimation of the torsion of the acetabulum with plain radiography in dysplastic hips. • In borderline-dysplastic hips, no significant correlation was found, which raises the question if a simple x-ray has enough validity to address the acetabular deformity with surgery.
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Affiliation(s)
- Carsten Y W Heimer
- Department of Orthopaedic Surgery and Traumatology, Charité Berlin, University Hospital, Chariteplatz 1, 10117, Berlin, Germany
| | - Friedemann Göhler
- Department of Radiology, Charité Berlin, University Hospital, Chariteplatz 1, 10117, Berlin, Germany
| | - J Turner Vosseller
- Jacksonville Orthopaedic Institute, San Marco Blvd, Jacksonville, FL, 32207, USA
| | - Sebastian Hardt
- Department of Orthopaedic Surgery and Traumatology, Charité Berlin, University Hospital, Chariteplatz 1, 10117, Berlin, Germany
| | - Carsten Perka
- Department of Orthopaedic Surgery and Traumatology, Charité Berlin, University Hospital, Chariteplatz 1, 10117, Berlin, Germany
| | - Henrik C Bäcker
- Department of Orthopaedic Surgery and Traumatology, Charité Berlin, University Hospital, Chariteplatz 1, 10117, Berlin, Germany.
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Ciufo DJ, Baker EA, Gehrke CK, Vaupel ZM, Fortin PT. Tibial torsion correlates with talar morphology. Foot Ankle Surg 2022; 28:354-361. [PMID: 33888396 DOI: 10.1016/j.fas.2021.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 03/09/2021] [Accepted: 04/15/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND There is limited literature on axial rotation of the ankle or variations in anatomy of the talus. We aim to evaluate the rotational profile of the distal tibia and its relationship to talus morphology, radiographic foot-type, and tibiotalar tilt in arthritic ankles. METHODS Preoperative imaging was reviewed in 173 consecutive patients with ankle arthritis. CT measurements were used to calculate tibial torsion and the talar neck-body angle (TNBA). Tibiotalar tilt and foot-type were measured on weightbearing plain radiographs. RESULTS Measurements indicated mean external tibial torsion of 29.2±9.1˚ and TNBA of 35.2±7.5˚ medial. Tibiotalar tilt ranged from 48˚ varus to 23.5˚ valgus. A moderate association between increasing external tibial torsion and decreasing TNBA was found (ρ=-0.576, p<.0001). Weak relationships were found between external tibial torsion and varus tibiotalar tilt (ρ=-0.239, p=.014) and plantarflexion of the talo-first metatarsal angle (ρ=-0.218, p<.025). CONCLUSION We observed a statistically significant correlation between tibial torsion and morphology of the talus, tibiotalar tilt, and first ray plantarflexion. This previously unreported association may provide information regarding the development of foot and ankle deformity and pathology. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- David J Ciufo
- Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA.
| | - Erin A Baker
- Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA
| | - Corinn K Gehrke
- Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA
| | - Zachary M Vaupel
- Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA
| | - Paul T Fortin
- Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA
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Proposed Geometrical Tool for Cases of Laterally Adapted Tibial Tubercle during Total Knee Replacement. Adv Orthop 2021; 2021:5244034. [PMID: 34413983 PMCID: PMC8369185 DOI: 10.1155/2021/5244034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 07/15/2021] [Accepted: 07/22/2021] [Indexed: 11/18/2022] Open
Abstract
The alignment of tibial component in total knee replacement operation must be achieved in three planes to ensure optimum results. In coronal plane, the alignment depends on three anatomical landmarks. These landmarks are tibial tuberosity, leg shin, and midtalar point. In eastern community, people get used to sit cross-legged which causes additional tension in the quadriceps muscle which is attached distally to the tibial tuberosity. This tension causes adaptation of the tuberosity laterally. Tuberosity adaptation causes the three anatomical landmarks being not collinear. In this work, eight cases of lateral adapted tubercle were diagnosed of this condition before the surgery and their X-ray images after the surgery were checked regarding tibial alignment. Tibial alignment has been checked by measuring the medial proximal tibial angle (MPTA) which is the angle between the mechanical tibial axis and the tibial component plateau. MPTAs for the eight cases were (86.9°–93.6°). Three cases had MPTA less than 90° indicating varus alignment and five of them had MPTA more than 90° indicating valgus alignment. A geometrical tool was designed using the DesignSpark Mechanical software as a proposed solution to solve the adaptation problem. The tool can give a method for fixing the tibial component precisely without any varus\valgus malalignment.
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Large Individual Bilateral Differences in Tibial Torsion Impact Accurate Contralateral Templating and the Evaluation of Rotational Malalignment. J Orthop Trauma 2021; 35:e277-e282. [PMID: 33878071 DOI: 10.1097/bot.0000000000002041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/10/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine individual bilateral differences (IBDs) in tibial torsion in a diverse population. METHODS Computed tomography scans of uninjured bilateral tibiae were used to determine tibial torsion and IBDs in torsion using 4 measurement methods. Age, sex, and self-identified race/ethnicity were also recorded for each subject. Mean tibial torsion and IBDs in torsion were compared in the overall cohort and when stratified by sex and race/ethnicity. Simple and multiple linear regression models were used to correlate demographic variables with tibial torsion and IBDs in torsion. RESULTS One hundred ninety-five patients were evaluated. The mean tibial torsion was 27.5 ± 8.3 degrees (range -3 to 47.5 degrees). The mean IBD in torsion was 5.3 ± 4.0 degrees (range 0-23.5 degrees, P < 0.001). 12.3% of patients had IBDs in torsion of ≥10 degrees. In the regression analysis, patients who identified as White had greater average torsion by 4.4 degrees compared with Hispanic/Latinx patients (P = 0.001), whereas age and sex were not significantly associated with absolute torsion. Demographics were not associated with significant differences in IBDs in torsion. CONCLUSIONS Tibial torsion varies considerably and individual side-to-side differences are common. Race/ethnicity was associated with differences in the magnitude of tibial torsion, but no factors were associated with bilateral differences in torsion. The results of this study may be clinically significant in the context of using the uninjured contralateral limb to help establish rotational alignment during medullary nail stabilization of diaphyseal tibia fractures. In addition, these findings should be considered in the evaluation of tibia rotational malalignment. LEVEL OF EVIDENCE Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Stephen JM, Teitge RA, Williams A, Calder JD, El Daou H. A Validated, Automated, 3-Dimensional Method to Reliably Measure Tibial Torsion. Am J Sports Med 2021; 49:747-756. [PMID: 33533633 PMCID: PMC7917570 DOI: 10.1177/0363546520986873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Tibial torsion is a twist in the tibia measured as an angle between a proximal axis line and a distal axis line. Abnormal torsion has been associated with a variety of painful clinical syndromes of the lower limb. Measurements of normal tibial torsion reported by different authors vary by 100% (ranging from 20° to 42°), making it impossible to determine normal and pathological levels. PURPOSE To address the problem of unreliable measurements, this study was conducted to define an automated, validated computer method to calculate tibial torsion. Reliability was compared with current clinical methods. The difference between measurements of torsion generated from computed tomography (CT) and magnetic resonance imaging (MRI) scans of the same bone, and between males and females, was assessed. STUDY DESIGN Controlled laboratory study. METHODS Previous methods of analyzing tibial torsion were reviewed, and limitations were identified. An automated measurement method to address these limitations was defined. A total of 56 cadaveric and patient tibiae (mean ± SD age, 37 ± 15 years; range, 17-71 years; 28 female) underwent CT scanning, and 3 blinded assessors made torsion measurements by applying 2 current clinical methods and the automated method defined in the present article. Intraclass correlation coefficient (ICC) values were calculated. Further, 12 cadaveric tibiae were scanned by MRI, stripped of tissue, and measured using a structured light (SL) scanner. Differences between torsion values obtained from CT, SL, and MRI scans, and between males and females, were compared using t tests. SPSS was used for all statistical analysis. RESULTS When the automated method was used, the tibiae had a mean external torsion of 29°± 11° (range, 9°-65). Automated torsion assessment had excellent reliability (ICC, 1), whereas current methods had good reliability (ICC, 0.78-0.81). No significant difference was found between the torsion values calculated from SL and CT (P = .802), SL and MRI (P = .708), or MRI and CT scans (P = .826). CONCLUSION The use of software to automatically perform measurements ensures consistency, time efficiency, validity, and accuracy not possible with manual measurements, which are dependent on assessor experience. CLINICAL RELEVANCE We recommend that this method be adopted in clinical practice to establish databases of normal and pathological tibial torsion reference values and ultimately guide management of related conditions.
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Affiliation(s)
- Joanna M. Stephen
- Department of Mechanical Engineering,
Imperial College London, London, UK,Fortius Clinic, London, UK,Joanna M. Stephen, PhD,
Department of Mechanical Engineering, Imperial College London, SW7 2AZ, UK
()
| | - Robert A. Teitge
- Department of Orthopedic Surgery, Wayne
State University, Detroit, Michigan, USA
| | - Andy Williams
- Department of Mechanical Engineering,
Imperial College London, London, UK,Fortius Clinic, London, UK
| | - James D.F. Calder
- Fortius Clinic, London, UK,Department of Bioengineering, Imperial
College London, London, UK
| | - Hadi El Daou
- Department of Mechanical Engineering,
Imperial College London, London, UK
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11
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Snow M. Tibial Torsion and Patellofemoral Pain and Instability in the Adult Population: Current Concept Review. Curr Rev Musculoskelet Med 2021; 14:67-75. [PMID: 33420589 DOI: 10.1007/s12178-020-09688-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/17/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Tibial torsion is a recognized cause of patellofemoral pain and instability in the paediatric population; however, it is commonly overlooked in the adult population. The aim of this review article is to summarize the current best evidence on tibial torsion for the adult orthopaedic surgeon. RECENT FINDINGS The true incidence of tibial torsion in the adult population is unknown, with significant geographical variations making assessment very difficult. CT currently remains the gold standard for quantitatively assessing the level of tibial torsion and allows assessment of any associated femoral and knee joint rotational anomalies. Surgical correction should only be considered after completion of a course of physiotherapy aimed at addressing the associated proximal and gluteal weakness. Tibial torsion greater than 30° is used as the main indicator for tibial de-rotation osteotomy by the majority of authors. In patients with associated abnormal femoral rotation, current evidence would suggest that a single-level correction of the tibia (if considered to be a dominant deformity) is sufficient in the majority of cases. Proximal de-rotational osteotomy has been more commonly reported in the adult population and confers the advantage of allowing simultaneous correction of patella alta or excessive tubercle lateralization. Previous surgery prior to de-rotational osteotomy is common; however, in patients with persistent symptoms surgical correction still provides significant benefit. Tibial torsion persists into adulthood and can play a significant role in patellofemoral pathology. A high index of suspicion is required in order to identify torsion clinically. Surgical correction is effective for both pain and instability, but results are inferior in patients with very high pain levels pre-surgery and multiple previous surgeries.
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Affiliation(s)
- Martyn Snow
- The Royal Orthopaedic Hospital, Bristol Road South, Northfield, Birmingham, UK.
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12
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Abstract
BACKGROUND Total ankle replacements (TARs) have higher rates of osteolysis than hip or knee replacements. It is unclear whether this is a pathologic immunologic process in response to wear debris, or expansion of pre-existing osteoarthritic bone cysts. We aimed to determine the incidence of bone cysts in patients with end-stage ankle arthritis prior to surgery and review the literature on bone cysts and osteolysis in relation to TAR. METHODS This is a descriptive/prevalence study in which all patients with end-stage ankle arthritis underwent plain radiographic imaging and computed tomographic (CT) scans prior to TAR surgery. Their imaging was assessed for the presence of cysts, measured on sagittal, axial, and coronal slices of the CT scan at the widest diameter. All cysts that would be removed as a result of the bone resection for the implant were excluded using digital analysis software. We assessed 120 consecutive patients with mean age of 63.4 years. RESULTS Seventeen patients (14%) did not have any bone cysts based on CT images. Ten patients (8%) had cysts that would have been completely removed by surgery, leaving 93 patients for analysis (78%). In 60% of these cases, the cysts were not seen on the plain radiographs. In 39 patients (33%), the cysts were greater than 5 mm in size. The medial (36%) and lateral malleoli (33%) were the most common location for the cysts (mean diameter 4.6±2.0 and 4.2±2.3 mm, respectively). CONCLUSION Bone cysts outside of the resection margins for a TAR were present in 78% of patients with ankle arthritis prior to undergoing surgery. In 30% of cases, cysts were greater than 5 mm in size. In 60% of cases, the cysts were not seen on plain radiographs. Preoperative 3-dimensional imaging can provide a foundation to observe and quantify cyst presence, expansion, and time of onset in the postoperative setting. LEVEL OF EVIDENCE Level IIc, diagnostic/prevalence study.
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Affiliation(s)
- Ali-Asgar Najefi
- UCL Institute of Orthopaedics & Musculoskeletal Research, Royal National Orthopaedic Hospital, Stanmore, Middlesex, United Kingdom.,East & North Hertfordshire NHS Trust, Lister Hospital, Stevenage, United Kingdom
| | - Yaser Ghani
- Foot & Ankle Unit, Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex, United Kingdom
| | - Andrew J Goldberg
- UCL Institute of Orthopaedics & Musculoskeletal Research, Royal National Orthopaedic Hospital, Stanmore, Middlesex, United Kingdom.,The London Ankle Arthritis Centre, Wellington Hospital, London, United Kingdom
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13
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Identification of Tibial Malrotation After Nailing Using Unique CT Scan Reference Line, and Influence of Position of Leg for Distal Locking on Rotation. Indian J Orthop 2020; 55:662-668. [PMID: 33995870 PMCID: PMC8081794 DOI: 10.1007/s43465-020-00307-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 11/02/2020] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Tibial torsion can be measured by various clinical and radiological methods. Computed tomography (CT) scan measurement is currently the investigation of choice. The purpose of our study was to compare the clinical and CT scan methods to reveal malrotation after nailing of tibia and also to find out if leg position for distal locking has any influence on incidence of malrotation. MATERIALS AND METHODS We have included 106 patients (21-68 years) of tibia nailing, and categorised them as category A (figure of four position n = 54) and category B (knee straight position n = 52) based on limb position for distal locking. The plumb line measurement, Thigh Foot Axis (TFA) and CT scan measurement (using new reference line) were documented and compared with the uninjured limb. RESULTS We observed plumb line measurement to be the most inaccurate method followed by TFA method. CT scan measurement was the most accurate method showing external rotations (> 10º) in 32 cases (30.1%) and internal rotation (> - 10º) in five cases (4.71%). The TFA method had a sensitivity of 44% and specificity of 86% in identifying malrotations. The interobserver reliability for CT scan measurement was 0.96. Even though statistically not significant (P value), figure of four position for distal locking leads to larger number of malrotations (both external and internal rotation). CONCLUSION CT scan is the most accurate method of measuring malrotation. The new reference line used in our study provides accurate measurement of malrotation. The two different positions of leg for distal locking do not have a statistically significant influence on incidence of malrotation.
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14
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Farinelli L, Baldini M, Bucci A, Ulisse S, Carle F, Gigante A. Axial and rotational alignment of lower limb in a Caucasian aged non-arthritic cohort. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2020; 31:221-228. [PMID: 32785786 PMCID: PMC7875943 DOI: 10.1007/s00590-020-02763-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/04/2020] [Indexed: 01/17/2023]
Abstract
Background The alignment of human lower limb has been an area of ongoing study for decades. The purpose of this study was to analyze the axial and rotational alignment from hip to ankle in a Caucasian aged non-arthritic cohort. Methods A non-arthritic cohort of aged patients was retrospectively analyzed by computer tomography. Anatomical–mechanical angle of femur (AMA), femur inclination (FI), femoral anteversion (FA), posterior condylar angle (PCA), proximal tibial torsion (TEAs-PTC and TEAs-PTT) and tibial fibular torsion (PTC-TFA) were measured. Results The median age of the patients was 76 years (range 67 to 91 years). Regarding axial alignment, the AMA was 5 (2.94; 6.80). No significance differences were reported by side and age. AMA was significantly lower in men. The FI was 125.3 (120.0; 134.8) with no differences in terms of side, age or gender. Regarding torsion alignment, the median values of FA, PTC-TFA and TEAs-PTT were, respectively, 16.8, 28.5 and − 1.4. No differences were reported by age. Right tibia was externally rotated by 1.5 degrees as compared to the left side (P 0.035). Conclusion The broad variability of the parameters analyzed highlights the necessity for a more anatomical and individualized approach during surgery of lower limb. The present study offers the fundament to understand and treat lower limb deformities. Hence, these data can constitute the normal reference values useful to investigate lower limb malalignment. Moreover, it helps to assess the possible changes of axial and rotational alignment in idiopathic OA of lower limb. Level of evidence III Retrospective cohort study
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Affiliation(s)
- L Farinelli
- Clinical Orthopaedics, Department of Clinical and Molecular Sciences, Università Politecnica Delle Marche, Ancona, Italy
| | - M Baldini
- Clinical Orthopaedics, Department of Clinical and Molecular Sciences, Università Politecnica Delle Marche, Ancona, Italy
| | - A Bucci
- Centre of Epidemiology, Biostatistics and Medical Information Technology, Università Politecnica Delle Marche, Ancona, Italy
| | - S Ulisse
- Department of Radiological Sciences, Università Politecnica Delle Marche, Ancona, Italy
| | - F Carle
- Centre of Epidemiology, Biostatistics and Medical Information Technology, Università Politecnica Delle Marche, Ancona, Italy
| | - A Gigante
- Clinical Orthopaedics, Department of Clinical and Molecular Sciences, Università Politecnica Delle Marche, Ancona, Italy.
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15
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Kaiser P, Konschake M, Loth F, Plaikner M, Attal R, Liebensteiner M, Schlumberger M. Derotational femoral osteotomy changes patella tilt, patella engagement and tibial tuberosity trochlear groove distance. Knee Surg Sports Traumatol Arthrosc 2020; 28:926-933. [PMID: 31214737 DOI: 10.1007/s00167-019-05561-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/07/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE The aim was to assess the influence of femoral derotational osteotomy on patella tilt (PT), axial patella engagement (AEI) and tibial tuberosity trochlear groove distance (TTTG). METHODS Derotational femoral osteotomy was performed on ten lower limbs of body donors embalmed with alcohol-glycerine. Femoral torsion, tibial torsion, knee torsion, PT, AEI and TTTG were evaluated on axial CT slices for an absolute femoral torsion of 15°, 20°, 25°, 30°, 35° and 40°. A linear mixed model analysis was used to estimate the effect of femoral torsion on PT, AEI, TTTG and knee torsion adjusted for correlation due to repeated observations. Estimates with 95% confidence intervals were used to represent the mean change in the dependent variables for one unit of change (degree, mm or AEI) in the predictor variable. RESULTS A significant correlation was observed between femoral torsion and AEI (p < 0.001), PT (p < 0.001) and TTTG distance (p = 0.002). In cases of increased internal femoral torsion, a significant decreased AEI (estimate - 0.003, 95% CI - 0.003 to - 0.002), an increased PT (estimate 0.3, 95% CI 0.2-0.4) and an increased TTTG distance (estimate 0.1, 95% CI 0.1-0.2) were observed. No correlation was seen between change in femoral torsion and knee torsion (n.s.). CONCLUSIONS Derotational femoral osteotomy has a significant impact on patella tilt and axial patella engagement. Moreover, TTTG distance is slightly changed by a derotational femoral osteotomy, which has to be taken into account preoperatively when considering surgical procedures. LEVEL OF EVIDENCE Level V.
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Affiliation(s)
- Peter Kaiser
- Department of Trauma Surgery, Medical University Innsbruck, Innsbruck, Austria
| | - Marko Konschake
- Department of Anatomy, Medical University Innsbruck, Innsbruck, Austria
| | - Fanny Loth
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical University Innsbruck, Innsbruck, Austria
| | - Michaela Plaikner
- Department of Radiology, Medical University Innsbruck, Innsbruck, Austria
| | - Rene Attal
- Department of Traumatology, LKH Feldkirch, Carinagasse 47, 6807, Feldkirch, Austria.
| | | | - Michael Schlumberger
- Department of Trauma Surgery, Medical University Innsbruck, Innsbruck, Austria.,Center of Arthroscopy and Sports Medicine, Orthopedic Hospital Markgroeningen, Markgroeningen, Germany
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16
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Abstract
BACKGROUND The importance of total ankle replacement (TAR) implant orientation in the axial plane is poorly understood with major variation in surgical technique of implants on the market. Our aim was to better understand the axial rotational profile of patients undergoing TAR. METHODS In 157 standardized computed tomography (CT) scans of patients with end-stage ankle arthritis planning to undergo primary TAR surgery, we measured the relationship between the knee posterior condylar axis, the tibial tuberosity, the transmalleolar axis (TMA), and the tibiotalar angle. The foot position was measured in relation to the TMA with the foot plantigrade. The variation between the medial gutter line and the line bisecting both gutters was assessed. RESULTS The mean external tibial torsion was 34.5 ± 10.3 degrees (11.8-62 degrees). When plantigrade, the mean foot position relative to the TMA was 21 ± 10.6 degrees (0.7-38.4 degrees) internally rotated. As external tibial torsion increased, the foot position became more internally rotated relative to the TMA (Pearson correlation, 0.6; P < .0001). As the tibiotalar angle became more valgus, the foot became more externally rotated relative to the TMA (Pearson correlation, -0.4; P < .01). The mean difference between the medial gutter line and a line bisecting both gutters was 4.9 ± 2.8 degrees (1.7-9.4 degrees). More than 51% of patients had a difference greater than 5 degrees. The mean angle between the medial gutter line and a line perpendicular to the TMA was 7.5 ± 2.6 degrees (2.8-13.7 degrees). CONCLUSION There was a large variation in rotational profile of patients undergoing TAR, particularly between the medial gutter line and the TMA. Surgeon designers and implant manufacturers should develop consistent methods to guide surgeons toward judging the appropriate axial rotation of their implant on an individual basis. We recommend careful clinical assessment and preoperative CT scans to enable the correct rotation to be determined. LEVEL OF EVIDENCE Level IIc, outcomes research.
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Affiliation(s)
- Ali-Asgar Najefi
- UCL Institute of Orthopaedics and Musculoskeletal Science, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, UK
| | - Yaser Ghani
- UCL Institute of Orthopaedics and Musculoskeletal Science, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, UK
| | - Andy Goldberg
- UCL Institute of Orthopaedics and Musculoskeletal Science, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, UK.,The London Ankle Arthritis Centre, Wellington Hospital, London, UK
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17
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Erkocak OF, Altan E, Altintas M, Turkmen F, Aydin BK, Bayar A. Lower extremity rotational deformities and patellofemoral alignment parameters in patients with anterior knee pain. Knee Surg Sports Traumatol Arthrosc 2016; 24:3011-3020. [PMID: 25931128 DOI: 10.1007/s00167-015-3611-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Accepted: 04/16/2015] [Indexed: 01/17/2023]
Abstract
PURPOSE Anterior knee pain is a common musculoskeletal condition amongst young adult population. Lower extremity structural factors, such as increased femoral anteversion and lateral tibial torsion, may contribute to patellofemoral malalignment and anterior knee pain. The aim of this study was to evaluate the lower extremity structural factors and related patellofemoral alignment parameters that play a role in the aetiology of anterior knee pain. METHODS This study involved three groups: patients with unilateral symptomatic knees (n = 35), asymptomatic contralateral knees in the same patients and a control group (n = 40). All subjects were physically examined, and Q-angles were measured. The lower extremities of all subjects were imaged by a very low-dose CT scan, and the symptomatic knees of patients were compared with their asymptomatic contralateral knees and with the healthy knees of controls regarding femoral anteversion, tibial torsion, sulcus angle, patellar tilt angle and lateral patellar displacement. RESULTS Regarding the Q-angle, femoral anteversion and lateral tibial torsion, no significant differences were found between the symptomatic and asymptomatic knees, whereas significant differences were found between the symptomatic knees and controls. The symptomatic group demonstrated significantly greater sulcus angle only in 30° of knee flexion than did the controls. CONCLUSION Patients with unilateral anterior knee pain may have similar morphology at their contralateral asymptomatic lower extremity, and different morphology compared with healthy controls. Lower extremity rotational deformities may increase the risk of anterior knee pain; however, these deformities alone are not sufficient to cause knee pain, and may be predisposing factor rather than a direct aetiology. LEVEL OF EVIDENCE Diagnostic study, Level III.
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Affiliation(s)
- Omer Faruk Erkocak
- Department of Orthopaedic Surgery and Traumatology, Selcuk University Faculty of Medicine, Konya, 42075, Turkey.
| | - Egemen Altan
- Department of Orthopaedic Surgery and Traumatology, Selcuk University Faculty of Medicine, Konya, 42075, Turkey
| | | | - Faik Turkmen
- Department of Orthopaedic Surgery and Traumatology, Necmettin Erbakan University Faculty of Medicine, Konya, Turkey
| | - Bahattin Kerem Aydin
- Department of Orthopaedic Surgery and Traumatology, Selcuk University Faculty of Medicine, Konya, 42075, Turkey
| | - Ahmet Bayar
- Department of Orthopaedic Surgery and Traumatology, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
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18
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Guler O, Isyar M, Karataş D, Ormeci T, Cerci H, Mahirogulları M. Investigating the relationship between internal tibial torsion and medial collateral ligament injury in patients undergoing knee arthroscopy due to tears in the posterior one third of the medial meniscus. Knee 2016; 23:655-8. [PMID: 26751979 DOI: 10.1016/j.knee.2015.09.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/07/2015] [Accepted: 09/30/2015] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the relationship between medial collateral ligament (MCL) injury and degree of internal tibial torsion in patients who had undergone arthroscopic resection due to tears in the posterior one third of the medial meniscus. METHODS Seventy-one patients were allocated into two groups with respect to foot femur angle (FFA) and transmalleolar angle (TMA) (Group 1 31 patients with FFA<8° and Group 2 40 patients with FFA≥8°). The groups were compared in terms of valgus instability, Lysholm score, magnetic resonance view, FFA, and TMA, both before and after the operation. RESULTS Lysholm scores were higher in Group 2 at both postoperative week 1 (p<0.001) and month 1 (p=0.045) relative to Group 1. Preoperative cartilage injury was encountered more frequently in Group 1 (p=0.037) than in Group 2. MCL injury was detected more frequently in Group 1 compared to Group 2 postoperatively at week 1 (p=0.001). CONCLUSION We conclude that FFA and TFA, indicators of internal tibial torsion, may serve as markers for foreseeing clinical improvement and complications following arthroscopic surgery. LEVEL OF EVIDENCE level III retrospective comparative study.
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Affiliation(s)
- Olcay Guler
- Department of Orthopedics and Traumatology, Medipol University, Medical Faculty, Istanbul, Turkey.
| | - Mehmet Isyar
- Department of Orthopedics and Traumatology, Medipol University, Medical Faculty, Istanbul, Turkey
| | - Dilek Karataş
- Department of Radiology, Nisa Hospital, Istanbul, Turkey
| | - Tugrul Ormeci
- Department of Radiology, Medipol University, Medical Faculty, Istanbul, Turkey
| | - Halis Cerci
- Department of Orthopedics and Traumatology, Nisa Hospital, Istanbul, Turkey
| | - Mahir Mahirogulları
- Department of Orthopedics and Traumatology, Medipol University, Medical Faculty, Istanbul, Turkey
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Abstract
ABSTRACT Tibial torsion, the twisting of the tibia about its long axis, can affect rotational positioning in total knee replacement. This angle varies depending on the ethnicity of the subject. There are no published studies to date to determine the tibial torsion among Filipinos. In this study, 28 cadaveric limbs were examined. Our results show that the average tibial torsion among adult Filipinos is 28.9°. KEY WORDS Tibial torsion, Filipinos, cadaveric.
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Affiliation(s)
- Cac Villamin
- Department of Orthopaedics, University of Santo Tomas Hospital, Manila, Philippines
| | - Jfc Syquia
- Department of Orthopaedics, University of Santo Tomas Hospital, Manila, Philippines
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20
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Subburaj K, Ravi B, Agarwal M. Computer-aided methods for assessing lower limb deformities in orthopaedic surgery planning. Comput Med Imaging Graph 2009; 34:277-88. [PMID: 19963346 DOI: 10.1016/j.compmedimag.2009.11.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Revised: 06/13/2009] [Accepted: 11/04/2009] [Indexed: 01/17/2023]
Abstract
Accurate, simple, and quick measurement of anatomical deformities at preoperative stage is clinically important for decision making in surgery planning. The deformities include excessive torsional, angular, and curvature deformation. This paper presents computer-aided methods for automatically measuring anatomical deformities of long bones of the lower limb. A three-dimensional bone model reconstructed from CT scan data of the patient is used as input. Anatomical landmarks on femur and tibia bone models are automatically identified using geometric algorithms. Medial axes of femur and tibia bones, and anatomical landmarks are used to generate functional and reference axes. These methods have been implemented in a software program and tested on a set of CT scan data. Overall, the performance of the computerized methodology was better or similar to the manual method and its results were reproducible.
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Affiliation(s)
- K Subburaj
- OrthoCAD Network Research Centre, Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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