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Pereira BS, Andrade R, Espregueira-Mendes J, Marano RPC, Oliva XM, Karlsson J. Current Concepts on Subtalar Instability. Orthop J Sports Med 2021; 9:23259671211021352. [PMID: 34435065 PMCID: PMC8381447 DOI: 10.1177/23259671211021352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 02/23/2021] [Indexed: 12/19/2022] Open
Abstract
Subtalar instability remains a topic of debate, and its precise cause is still unknown. The mechanism of injury and clinical symptoms of ankle and subtalar instabilities largely overlap, resulting in many cases of isolated or combined subtalar instability that are often misdiagnosed. Neglecting the subtalar instability may lead to failure of conservative or surgical treatment and result in chronic ankle instability. Understanding the accurate anatomy and biomechanics of the subtalar joint, their interplay, and the contributions of the different subtalar soft tissue structures is fundamental to correctly diagnose and manage subtalar instability. An accurate diagnosis is crucial to correctly identify those patients with instability who may require conservative or surgical treatment. Many different nonsurgical and surgical approaches have been proposed to manage combined or isolated subtalar instability, and the clinician should be aware of available treatment options to make an informed decision. In this current concepts narrative review, we provide a comprehensive overview of the current knowledge on the anatomy, biomechanics, clinical and imaging diagnosis, nonsurgical and surgical treatment options, and outcomes after subtalar instability treatment.
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Affiliation(s)
- Bruno S. Pereira
- Facultad de Medicina, University of Barcelona, Casanova, 143, 08036
Barcelona, Spain
- Clínica Espregueira - FIFA Medical Centre of Excellence, Porto,
Portugal
- Dom Henrique Research Centre, Porto, Portugal
- Hospital Privado de Braga, Lugar da Igreja Nogueira, Braga,
Portugal
| | - Renato Andrade
- Clínica Espregueira - FIFA Medical Centre of Excellence, Porto,
Portugal
- Dom Henrique Research Centre, Porto, Portugal
- Porto Biomechanics Laboratory (LABIOMEP), Faculty of Sports,
University of Porto, Porto, Portugal
- Porto Biomechanics Laboratory (LABIOMEP), University of Porto,
Porto, Portugal
| | - João Espregueira-Mendes
- Clínica Espregueira - FIFA Medical Centre of Excellence, Porto,
Portugal
- Dom Henrique Research Centre, Porto, Portugal
- School of Medicine, Minho University, Braga, Portugal
- 3B’s–PT Government Associate Laboratory, Braga/Guimarães,
Portugal
- 3B’s Research Group– Biomaterials, Biodegradables and Biomimetics,
University of Minho, Headquarters of the European Institute of Excellence on Tissue
Engineering and Regenerative Medicine, Barco, Guimarães, Portugal
| | | | - Xavier Martin Oliva
- Facultad de Medicina, University of Barcelona, Casanova, 143, 08036
Barcelona, Spain
- Orthopedic Surgery Department, Clínica Ntra. Sra. Del Remei,
Barcelona, Spain
| | - Jón Karlsson
- Department of Orthopaedics, Sahlgrenska Academy, Sahlgrenska
University Hospital, Gothenburg University, Gothenburg, Sweden
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Kakegawa A, Fukushima N, Sumitomo N, Nagira A, Moriizumi T, Mori Y. Continuous and Connective Fibers of the Lateral Ankle Ligament Complex. J Foot Ankle Surg 2021; 59:679-684. [PMID: 32600561 DOI: 10.1053/j.jfas.2019.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/19/2019] [Indexed: 02/03/2023]
Abstract
The lateral ankle ligament complex (LALC) is an intricate structure; therefore precise anatomic knowledge is required by the surgeon. However, the structural relationship of the LALC remains unclear. Here, the features of the posterior talofibular ligament (PTFL) and the relationship to the LALC at the distal fibula were clarified in a cadaver study. The lengths of most of the anterior and posterior parts, and the widths of the anterior-posterior and superior-inferior parts, were measured with a digital caliper. In addition, the relationship between the anterior talofibular ligament (ATFL) and PTFL inside of the capsule is described. The small fiber bundles of the PTFL were manually divided, and the footprint of each bundle at the fibula and talus was clarified. The relationship between the ATFL and CFL, outside of the capsule, was examined on axial slices at the inferior fibula. The lengths of the most anterior and most posterior parts of the PTFL were 9.8 ± 1.7 and 29.4 ± 1.9 mm, respectively. The widths of the anterior-posterior and superior-inferior parts were 10.0 ± 0.9 and 5.8 ± 1.1 mm, respectively. Approximately 83% of the fibers between the ATFL and PTFL were continuous. The anterior-inferior fibers of the PTFL were continuous with the inferior fibers of the ATFL inside of the capsule. The ATFL and CFL converged with connective tissue from outside of the capsule at the distal fibula. The results of this study should prove useful to further clarify the relationships of the LALC both inside and outside of the capsule at the distal fibula.
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Affiliation(s)
- Akira Kakegawa
- Associate Professor, Faculty of Health Care, Teikyo Heisei University, Tokyo, Japan; Lecturer, Department of Anatomy, Shinshu University School of Medicine, Nagano, Japan.
| | - Nanae Fukushima
- Professor, Department of Anatomy, Shinshu University School of Medicine, Nagano, Japan
| | - Norimi Sumitomo
- Technological Assistant, Department of Anatomy, Shinshu University School of Medicine, Nagano, Japan
| | - Ayata Nagira
- Technological Assistant, Department of Anatomy, Shinshu University School of Medicine, Nagano, Japan
| | - Tetsuji Moriizumi
- Professor, Department of Anatomy, Shinshu University School of Medicine, Nagano, Japan
| | - Yusuke Mori
- Orthopedic Surgeon, Toyohashi Esaki Orthopedic Hospital, Aichi, Japan
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The Location of the Fibular Tunnel for Anatomically Accurate Reconstruction of the Lateral Ankle Ligament: A Cadaveric Study. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5575524. [PMID: 33791364 PMCID: PMC7997753 DOI: 10.1155/2021/5575524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/08/2021] [Accepted: 03/09/2021] [Indexed: 11/18/2022]
Abstract
We aimed to describe the location of fibular footprint of each anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL), as well as their common origin in relation to bony landmarks of the fibula in order to determine the location of the fibular tunnel. In 105 ankle specimens, the center of the footprints of the ATFL and CFL (cATFL and cCFL, respectively) and the intersection point of their origin (intATFL-CFL) were investigated, and the distances from selected bony landmarks (the articular tip (AT) and the inferior tip (IT) of the fibula) were measured. Forty-two (40%) specimens had single-bundle ATFL, and 63 (60%) had double-bundle patterns. The distance between intATFL-CFL and IT was 12.0 ± 2.5 mm, and a significant difference was observed between the two groups (p = 0.001). Moreover, the ratio of the intATFL-CFL location based on the anterior fibular border for all cadavers was 0.386. The present study suggests a reference ratio that can help surgeons locate the fibular tunnel for a more anatomically accurate reconstruction of the lateral ankle ligament. Also, it may be necessary to make a difference in the location of the fibular tunnel according to the number of ATFL bundles during surgery.
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Michels F, Clockaerts S, Van Der Bauwhede J, Stockmans F, Matricali G. Does subtalar instability really exist? A systematic review. Foot Ankle Surg 2020; 26:119-127. [PMID: 30827926 DOI: 10.1016/j.fas.2019.02.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/08/2019] [Accepted: 02/09/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND Subtalar joint instability (STI) is considered as a potential source of chronic lateral hindfoot instability. However, clinical diagnosis of STI is still challenging. This systematic review was conducted to assess the consistency of the clinical entity "subtalar instability", to investigate the reliability of available diagnostic tools and to provide a critical overview of related studies. METHODS A systematic review of the Medline, Web of Sciences and EMBASE databases was performed for studies reporting on tests to investigate subtalar instability or lesions of the subtalar ligaments. To investigate the relation with chronic STI, studies focusing on sinus tarsi syndrome (STS) or acute lesions of the subtalar ligaments were also included in the search strategy and were assessed separately. RESULTS This review identified 25 studies focusing on different topics: chronic STI (16), acute lesions of the subtalar ligaments (5) and STS (4). Twelve studies, assessing STI, demonstrated the existence of a subgroup with instability complaints related to abnormal increased subtalar motion (7) or abnormalities of the subtalar ligaments (6). We found insufficient evidence for measuring subtalar tilting using stress radiographs. MRI was able to assess abnormalities of the ligaments and stress-MRI detected abnormally increased motion. CONCLUSION Complaints of instability can be related to subtalar ligaments injuries and an abnormally increased motion of the subtalar joint. Stress radiographs should be interpreted with caution and should not have the status of a reference test. Clinical diagnosis should rely on several parameters including MRI.
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Affiliation(s)
- Frederick Michels
- Orthopaedic Department, AZ Groeninge, President Kennedylaan 4, 8500, Kortrijk, Belgium.
| | - Stefan Clockaerts
- Orthopaedic Department, AZ Groeninge, President Kennedylaan 4, 8500, Kortrijk, Belgium; Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | - Jan Van Der Bauwhede
- Orthopaedic Department, AZ Groeninge, President Kennedylaan 4, 8500, Kortrijk, Belgium
| | - Filip Stockmans
- Orthopaedic Department, AZ Groeninge, President Kennedylaan 4, 8500, Kortrijk, Belgium; Department of Development and Regeneration, Faculty of Medicine, University of Leuven campus Kortrijk, Etienne Sabbelaan 53, 8500, Kortrijk, Belgium
| | - Giovanni Matricali
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Department of Orthopaedics, Foot and Ankle Unit, University Hospitals Leuven, KU Leuven, Leuven, Belgium; Institute of Orthopaedic Research and Training, KU Leuven, Leuven, Belgium
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Krähenbühl N, Weinberg MW, Davidson NP, Mills MK, Hintermann B, Saltzman CL, Barg A. Currently used imaging options cannot accurately predict subtalar joint instability. Knee Surg Sports Traumatol Arthrosc 2019; 27:2818-2830. [PMID: 30367197 DOI: 10.1007/s00167-018-5232-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/17/2018] [Indexed: 02/07/2023]
Abstract
PURPOSE To give a systematic overview of current diagnostic imaging options and surgical treatment for chronic subtalar joint instability. METHODS A systematic literature search across the following sources was performed: PubMed, ScienceDirect, and SpringerLink. Twenty-three imaging studies and 19 outcome studies were included. The Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS 2) tool was used to assess the methodologic quality of the imaging articles, while the modified Coleman Score was used to assess the methodologic quality of the outcome studies. RESULTS Conventional radiographs were most frequently used to assess chronic subtalar joint instability. Talar tilt, anterior talar translation, and subtalar tilt were the three most commonly used measurement methods. Surgery often included calcaneofibular ligament reconstruction. CONCLUSION Current imaging options do not reliably predict subtalar joint instability. Distinction between chronic lateral ankle instability and subtalar joint instability remains challenging. Recognition of subtalar joint instability as an identifiable and treatable cause of ankle pain requires vigilant clinical investigation. LEVEL OF EVIDENCE Systematic Review of Level III and Level IV Studies, Level IV.
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Affiliation(s)
- Nicola Krähenbühl
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Maxwell W Weinberg
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Nathan P Davidson
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Megan K Mills
- Department of Radiology and Imaging Sciences, University of Utah, 30 N. 1900 E. #1A071, Salt Lake City, UT, 84132, USA
| | - Beat Hintermann
- Department of Orthopaedics, Kantonsspital Baselland, Rheinstrasse 26, 4410, Liestal, Switzerland
| | - Charles L Saltzman
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA
| | - Alexej Barg
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT, 84108, USA.
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Sugimoto K, Takakura Y, Samoto N, Nakayama S, Tanaka Y. Subtalar arthrography in recurrent instability of the ankle. Clin Orthop Relat Res 2002:169-76. [PMID: 11795729 DOI: 10.1097/00003086-200201000-00020] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Subtalar arthrography was done in 37 feet of 35 patients in whom recurrent instability of the ankle was diagnosed. There were 16 male and 19 female patients, with a mean age of 29.1 years (range, 11-56 years). The mean interval between the injury and arthrography was 4 years 3 months (range, 6 months-22 years). Anteroposterior, lateral, and oblique radiographs were obtained for all patients. Any leakage during arthrography into the ankle, tendon sheaths, or sinus tarsi was recorded. An oblique view of the microrecess along the interosseous ligament and an anteroposterior view of the lateral recess just under the end of the fibula were examined. At surgery, 13 feet had combined injuries of the anterior talofibular and calcaneofibular ligaments, and 24 feet had isolated injury of the anterior talofibular ligament. The findings of the two groups were significantly different when examined for leakage into the ankle, leakage into the peroneal tendon sheath, and the presence of the lateral recess. Presence of contrast medium in at least two of these three positive arthrographic findings showed 92.3% sensitivity and 87.5% specificity in making the diagnosis of calcaneofibular ligament injury. Subtalar arthrography is valuable in making the diagnosis of calcaneofibular ligament injury in recurrent instability of the ankle.
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Affiliation(s)
- K Sugimoto
- Department of Orthopaedic Surgery, Saiseikai Nara Hospital, Nara-shi, Japan
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