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Yang HY, Kang JK, Kim JW, Yoon TW, Seon JK. Preoperative Hindfoot Alignment and Outcomes After High Tibial Osteotomy for Varus Knee Osteoarthritis: We Walk on Our Heel, Not Our Ankle. J Bone Joint Surg Am 2024; 106:896-905. [PMID: 38386715 DOI: 10.2106/jbjs.23.00720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
UPDATE This article was updated on May 15, 2024 because of previous errors, which were discovered after the preliminary version of the article was posted online. On page 898, in the section entitled "Materials and Methods," the sentence that had read "The WBL ratio of the knee joint was defined as the point where the GA or MA passed through the width of the tibia and intersected a line from the center of the femoral head to the center of the calcaneus (for the GA) or talus (for the MA), with the medial edge defined as 0% and the lateral edge as 100%." now reads "The WBL ratio of the knee joint was defined as the point where the GA or MA passed through the width of the tibia and intersected a line from the center of the femoral head to the lowest point of the calcaneus (for the GA) or the center of the talus (for the MA), with the medial edge defined as 0% and the lateral edge as 100%." Likewise, in the legend for Figure 3 on page 899, the sentence that had read "Depiction of the ground mechanical axis (GA), defined as the line (represented by the solid red line) from the center of the femoral head to the ground reaction point at the center of the calcaneus, passing lateral to the traditional mechanical axis (MA; represented by the dashed red line)." now reads "Depiction of the ground mechanical axis (GA), defined as the line (represented by the solid red line) from the center of the femoral head to the ground reaction point at the lowest point of the calcaneus, passing lateral to the traditional mechanical axis (MA; represented by the dashed red line)." Finally, on page 903, "HKA" was changed to "HKA angle" in Table III. BACKGROUND The hip-to-calcaneus axis, previously known as the ground mechanical axis (GA), ideally passes through the center of the knee joint in the native knee. The aim of this study was to elucidate, with use of hip-to-calcaneus radiographs, changes in knee and hindfoot alignment and changes in outcomes following high tibial osteotomy (HTO). METHODS We reviewed the records for 128 patients who underwent HTO between 2018 and 2020. Patients were stratified into 2 groups, a hindfoot valgus group (n = 94) and a hindfoot varus group (n = 34), on the basis of their preoperative hindfoot alignment. The hindfoot alignment was evaluated with use of the hindfoot alignment angle (HAA). To evaluate lower-limb alignment, full-length standing posteroanterior hip-to-calcaneus radiographs were utilized to measure 4 radiographic parameters preoperatively and 2 years postoperatively: the hip-knee-ankle (HKA) angle, hip-knee-calcaneus (HKC) angle, and the weight-bearing line (WBL) ratios of the mechanical axis (MA) and GA. RESULTS The mean HAA improved significantly from 5.1° valgus preoperatively to 1.9° valgus postoperatively in the hindfoot valgus group (p < 0.001). In contrast, in the hindfoot varus group, the HAA showed no meaningful improvement in the coronal alignment of the hindfoot following HTO (p = 0.236). The postoperative mean HKC angle in the hindfoot varus group was 2° more varus than that in the hindfoot valgus group (1.0° versus 3.0°; p = 0.001), and the GA in the hindfoot varus group passed across the knee 8.0% more medially than that in the hindfoot valgus group (55% versus 63% from the most medial to the most lateral part of the tibial plateau). The hindfoot varus group had worse postoperative clinical outcomes than the hindfoot valgus group in terms of the mean Knee injury and Osteoarthritis Outcome Score for pain and American Orthopaedic Foot & Ankle Society Ankle-Hindfoot Score. CONCLUSIONS Although our findings did not provide sufficient evidence to establish clinically relevant differences between the groups, they indicated that the group with a preoperative fixed hindfoot varus deformity had a higher rate of undercorrection and worse clinical outcomes, especially pain, following HTO. Therefore, modification of the procedure to shift the GA more laterally may be required for these patients. LEVEL OF EVIDENCE Prognostic Level III . See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Hong Yeol Yang
- Department of Orthopaedic Surgery, Chonnam National University Hwasun Hospital, College of Medicine, Chonnam National University, Seoyang, Republic of Korea
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Kikuchi N, Kanamori A, Okuno K, Yamazaki M. Weight-bearing line at the ankle joint level shifted laterally after total knee arthroplasty for varus knee osteoarthritis: Evaluation of the hip-to-calcaneus line. Orthop Traumatol Surg Res 2024; 110:103690. [PMID: 37741441 DOI: 10.1016/j.otsr.2023.103690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND Few studies have comprehensively examined how alignment beyond the ankle joint changes after Total knee arthroplasty (TKA). This retrospective study aimed to answer the questions: (1) do the radiological parameters beyond the ankle joint, including the weight-bearing line at the ankle joint level, change after TKA in varus knee osteoarthritis? (2) Does the lower extremity alignment correlate with alignment beyond the ankle joint? HYPOTHESIS Our hypothesis was that TKA altered the radiological parameters beyond the ankle, which correlated with the lower extremity alignment. PATIENTS AND METHODS This retrospective study included 67 patients who underwent mechanically aligned TKA for varus knee osteoarthritis. The hip-knee-ankle angle (HKA), tibial plafond inclination angle (TPIA), hindfoot alignment angle (HA), talar tilt (TT), and weight-bearing line at the ankle joint level (mechanical ankle joint axis point [MAJAP]) were measured using radiographs taken before and 6 months after TKA; each parameter was compared between the two time points. The correlations between HKA and other parameters were examined preoperatively and postoperatively. RESULTS The mean HKA, TPIA, HA, TT, and MAJAP changed significantly after TKA from 15.0±6.1̊ to 2.6̊±3.5̊, from 10.8̊±5.7̊ to 4.7̊±3.9̊, from 2.3̊±5.5̊ to -2.5̊±4.5̊, from 0.2̊±1.3̊ to -0.5̊±1.4̊, and from 29.3±23.3 to 54.3±20.6, respectively. Correlations were noted between the preoperative HKA and the preoperative TPIA (r=0.58), HA (r=0.36), and MAJAP (r=-0.59), and between the postoperative HKA and the postoperative TPIA (r=0.54) and MAJAP (r=-0.38). DISCUSSION TKA for varus knee osteoarthritis altered radiological parameters beyond the ankle, with the weight-bearing line at the ankle joint level passing more laterally. The weight-bearing line at the ankle joint level was correlated with lower extremity alignment both preoperatively and postoperatively. LEVEL OF EVIDENCE IV; single-centre retrospective observational study.
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Affiliation(s)
- Naoya Kikuchi
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, 305-8575 Ibaraki, Japan.
| | - Akihiro Kanamori
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, 305-8575 Ibaraki, Japan
| | - Kosuke Okuno
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, 305-8575 Ibaraki, Japan
| | - Masashi Yamazaki
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, 305-8575 Ibaraki, Japan
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Kang HW, Kim DY, Kim JM, Park GY, Lee DO, Lee DY. Hindfoot motion according to subtalar compensation and ankle osteoarthritis stage analyzed by a multi-segment foot model. J Orthop Surg Res 2024; 19:202. [PMID: 38532518 DOI: 10.1186/s13018-024-04615-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/03/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND The biomechanics of the hindfoot in ankle osteoarthritis (OA) are not yet fully understood. Here, we aimed to identify hindfoot motion in a gait analysis using a multi-segment foot model (MFM) according to ankle OA stage and the presence of subtalar compensation defined by hindfoot alignment. METHODS We retrospectively reviewed the medical records, plain radiographs, and gait MFM data of 54 ankles admitted to our hospital for the treatment of advanced ankle OA. Spatiotemporal gait parameters and three-dimensional motions of the hindfoot segment were analyzed according to sex, age, body mass index, Takakura classification, and the presence of subtalar compensation. Twenty ankles were categorized as compensated group, and 34 ankles as decompensated group. RESULTS No spatiotemporal gait parameters differed significantly according to the presence of subtalar compensation or ankle OA stage. Only normalized step width differed significantly (P = 0.028). Average hindfoot motion (decompensation vs. compensation) did not differ significantly between the sagittal and transverse planes. Graphing of the coronal movement of the hindfoot revealed collapsed curves in both groups that differed significantly. Compared with Takakura stages 3a, 3b, and 4, cases of more advanced stage 3b had a smaller sagittal range of motion than those of stage 3a (P = 0.028). Coronal movement of the hindfoot in cases of Takakura stage 3a/3b/4 showed a relatively flat pattern. CONCLUSIONS The spatiotemporal parameters were not affected by the hindfoot alignment resulting from subtalar compensation. The sagittal range of hindfoot motion decreased in patients with advanced ankle OA. Once disrupted, the coronal movement of the subtalar joint in ankle OA did not change regardless of ankle OA stage or hindfoot compensation state.
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Affiliation(s)
- Ho Won Kang
- Department of Orthopedic Surgery, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - Dae-Yoo Kim
- Department of Orthopedic Surgery, Inje University Busan Paik Hospital, Busan, Republic of Korea
| | - Jung Min Kim
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Gil Young Park
- Department of Orthopedic Surgery, SNU Seoul Hospital, Seoul, Republic of Korea
| | - Dong-Oh Lee
- Department of Orthopedic Surgery, SNU Seoul Hospital, Seoul, Republic of Korea.
| | - Dong Yeon Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
- Department of Orthopedic Surgery, Seoul National University College of Medicine, 101 Daehak-no, Jongno-gu, Seoul, 03080, Republic of Korea.
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Burssens A, Devos Bevernage B, Buedts K. Supramalleolar Osteotomies in Cavovarus Foot Deformity: Why Patient-Specific Instruments Make a Difference. Foot Ankle Clin 2023; 28:843-856. [PMID: 37863539 DOI: 10.1016/j.fcl.2023.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Supramalleolar osteotomy enables correction of the ankle varus deformity and is associated with improvement of pain and function in the short term and long term. Despite these beneficial results, the amount of surgical correction is challenging to titrate and the procedure remains technically demanding. Most supramalleolar osteotomies are currently planned preoperatively on 2-dimensional weight-bearing radiographs and executed peroperatively using free-hand techniques. This article encompasses 3-dimensional planning and printing techniques based on weight-bearing computed tomography images and patient-specific instruments to correct ankle varus deformities.
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Affiliation(s)
- Arne Burssens
- Department of Orthopaedics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium.
| | - Bernhard Devos Bevernage
- Department of Orthopaedics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium; Department of Orthopaedics, Foot and Ankle Institute, Avenue Ariane 5, Brussels 1000, Belgium
| | - Kristian Buedts
- Department of Orthopaedics, ZNA Middelheim, Lindendreef 1, Antwerp 2020, Belgium
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Van Oevelen A, Burssens A, Krähenbühl N, Barg A, Devos Bevernage B, Audenaert E, Hintermann B, Victor J. Osteotomies around the knee alter alignment of the ankle and hindfoot: a systematic review of biomechanical and clinical studies. EFORT Open Rev 2023; 8:818-829. [PMID: 37909698 PMCID: PMC10646520 DOI: 10.1530/eor-23-0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
Purpose Emerging reports suggest an important involvement of the ankle/hindfoot alignment in the outcome of knee osteotomy; however, a comprehensive overview is currently not available. Therefore, we systematically reviewed all studies investigating biomechanical and clinical outcomes related to the ankle/hindfoot following knee osteotomies. Methods A systematic literature search was conducted on PubMed, Web of Science, EMBASE and Cochrane Library according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and registered on international prospective register of systematic reviews (PROSPERO) (CRD42021277189). Combining knee osteotomy and ankle/hindfoot alignment, all biomechanical and clinical studies were included. Studies investigating knee osteotomy in conjunction with total knee arthroplasty and case reports were excluded. The QUality Appraisal for Cadaveric Studies (QUACS) scale and Methodological Index for Non-Randomized Studies (MINORS) scores were used for quality assessment. Results Out of 3554 hits, 18 studies were confirmed eligible, including 770 subjects. The minority of studies (n = 3) assessed both high tibial- and distal femoral osteotomy. Following knee osteotomy, the mean tibiotalar contact pressure decreased (n = 4) except in the presence of a rigid subtalar joint (n = 1) or a talar tilt deformity (n = 1). Patient symptoms and/or radiographic alignment at the level of the ankle/hindfoot improved after knee osteotomy (n = 13). However, factors interfering with an optimal outcome were a small preoperative lateral distal tibia angle, a small hip-knee-ankle axis (HKA) angle, a large HKA correction (>14.5°) and a preexistent hindfoot deformity (>15.9°). Conclusions Osteotomies to correct knee deformity alter biomechanical and clinical outcomes at the level of the ankle/hindfoot. In general, these changes were beneficial, but several parameters were identified in association with deterioration of ankle/hindfoot symptoms following knee osteotomy.
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Affiliation(s)
- Aline Van Oevelen
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
| | - Arne Burssens
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
| | - Nicola Krähenbühl
- Department of Orthopaedics, University Hospital Basel, Basel, Switzerland
| | - Alexej Barg
- Department of Orthopaedics and Trauma, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Emmanuel Audenaert
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
- Department of Electromechanics, InViLab research group, University of Antwerp, Antwerp, Belgium
- Department of Trauma and Orthopedics, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Beat Hintermann
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
| | - Jan Victor
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
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Rühling M, Kirschbaum SM, Perka C, Graef F. Increased ankle pain after total knee arthroplasty is associated with a preoperative lateralized gait and talar tilt, but not with ankle laxity or the range of motion of the subtalar joint. Bone Joint J 2023; 105-B:1159-1167. [PMID: 37907076 DOI: 10.1302/0301-620x.105b11.bjj-2023-0419.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Aims Total knee arthroplasty (TKA) may provoke ankle symptoms. The aim of this study was to validate the impact of the preoperative mechanical tibiofemoral angle (mTFA), the talar tilt (TT) on ankle symptoms after TKA, and assess changes in the range of motion (ROM) of the subtalar joint, foot posture, and ankle laxity. Methods Patients who underwent TKA from September 2020 to September 2021 were prospectively included. Inclusion criteria were primary end-stage osteoarthritis (Kellgren-Lawrence stage IV) of the knee. Exclusion criteria were missed follow-up visit, post-traumatic pathologies of the foot, and neurological disorders. Radiological angles measured included the mTFA, hindfoot alignment view angle, and TT. The Foot Function Index (FFI) score was assessed. Gait analyses were conducted to measure mediolateral changes of the gait line and ankle laxity was tested using an ankle arthrometer. All parameters were acquired one week pre- and three months postoperatively. Results A total of 69 patients (varus n = 45; valgus n = 24) underwent TKA and completed the postoperative follow-up visit. Of these, 16 patients (23.2%) reported the onset or progression of ankle symptoms. Varus patients with increased ankle symptoms after TKA had a significantly higher pre- and postoperative TT. Valgus patients with ankle symptoms after TKA showed a pathologically lateralized gait line which could not be corrected through TKA. Patients who reported increased ankle pain neither had a decreased ROM of the subtalar joint nor increased ankle laxity following TKA. The preoperative mTFA did not correlate with the postoperative FFI (r = 0.037; p = 0.759). Conclusion Approximately one-quarter of the patients developed ankle pain after TKA. If patients complain about ankle symptoms after TKA, standing radiographs of the ankle and a gait analysis could help in detecting a malaligned TT or a pathological gait.
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Affiliation(s)
- Marlene Rühling
- Centre for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Carsten Perka
- Centre for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Frank Graef
- Centre for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Dufrénot M, Dagneaux L, Fernando C, Chabrand P, Ollivier M, Lintz F. Three-dimensional biometrics using weight-bearing imaging shows relationship between knee and hindfoot axial alignment. Orthop Traumatol Surg Res 2023; 109:103482. [PMID: 36435375 DOI: 10.1016/j.otsr.2022.103482] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 08/15/2022] [Accepted: 08/25/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Existence of a relationship between knee and hindfoot alignments is commonly accepted, but not clearly proven. While studied in the coronal plane using 2D imaging, axial alignment has not been studied yet, likely requiring 3D measurements. We aimed to investigate how knee and hindfoot rotational alignments are related using 3D biometrics and modern 3D weight-bearing technologies. HYPOTHESIS Hindfoot alignment is correlated with femoral and tibial torsions. PATIENTS AND METHODS All patients who underwent both weight-bearing CT (WBCT) and low dose biplanar radiographs (LDBR) were selected in this retrospective observational study, resulting in a cohort of 157 lower limbs from 99 patients. Patients' pathologies were stratified in subgroups and those with a history of trauma or surgery affecting lower limb alignment were excluded. Foot Ankle Offset was calculated from WBCT; femoral and tibial torsions and coronal alignment were calculated from LDBR, respectively. RESULTS Overall, mean Foot Ankle Offset was 1.56% (SD 7.4), mean femoral anteversion was 15.6° (SD 9.5), and mean external tibial torsion was 32.6° (SD 7.6). Moderate negative correlation between Tibial Torsion and Foot Ankle Offset was found in the whole series (rho=-0.23, p=0.003) and for non-pathologic patients (rho=-0.27, p=0.01). Linear models to estimate Tibial Torsion with Foot Ankle Offset and conversely were found, with a low adjusted R2 (3% DISCUSSION External tibial rotation was associated with varus hindfoot configuration in the group without pathologies, suggesting that compensatory mechanisms may occur between knee and hindfoot alignments. In pathological cases, however, the same relationship wasn't found, raising concerns about compensatory failure in spite of the numbers available. We didn't find similar correlations with the femur possibly because the hip has a degree of liberty in the axial plane. LEVEL OF EVIDENCE III, retrospective comparative study.
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Affiliation(s)
- Maryama Dufrénot
- CNRS, institut des sciences du mouvement Étienne-Jules Marey, UMR 7287, Aix-Marseille université, 163, avenue de Luminy, 13009 Marseille, France; Institut du membre inférieur et de l'appareil locomoteur, APHM, hôpital Sainte-Marguerite, 270, boulevard de Sainte-Marguerite, 13009 Marseille, France; Newclip Technics, PA de la Lande Saint-Martin, 45, rue des Garottières, 44115 Haute-Goulaine, France.
| | - Louis Dagneaux
- Département de chirurgie orthopédique du membre inférieur, CHU de Montpellier, hôpital Lapeyronie, 371 avenue du Doyen Gaston-Giraud, 39295 Montpellier cedex 05, France; Laboratoire de mécanique et génie civil (LMGC), université de Montpellier, 860, rue de Saint-Priest, 34090 Montpellier, France
| | - Celine Fernando
- Service de chirurgie du pied et de la cheville, Ramsay Santé - clinique de l'Union, boulevard de Ratalens, 31240 Saint-Jean, France
| | - Patrick Chabrand
- CNRS, institut des sciences du mouvement Étienne-Jules Marey, UMR 7287, Aix-Marseille université, 163, avenue de Luminy, 13009 Marseille, France; Institut du membre inférieur et de l'appareil locomoteur, APHM, hôpital Sainte-Marguerite, 270, boulevard de Sainte-Marguerite, 13009 Marseille, France
| | - Matthieu Ollivier
- CNRS, institut des sciences du mouvement Étienne-Jules Marey, UMR 7287, Aix-Marseille université, 163, avenue de Luminy, 13009 Marseille, France; Institut du membre inférieur et de l'appareil locomoteur, APHM, hôpital Sainte-Marguerite, 270, boulevard de Sainte-Marguerite, 13009 Marseille, France
| | - François Lintz
- Service de chirurgie du pied et de la cheville, Ramsay Santé - clinique de l'Union, boulevard de Ratalens, 31240 Saint-Jean, France
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Siegler S, Piarulli L, Stolle J. Definitions and Measurements of Hindfoot Alignment and Their Biomechanical and Clinical Implications. Foot Ankle Clin 2023; 28:115-128. [PMID: 36822681 DOI: 10.1016/j.fcl.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This article presents a critical review of the past and the current state of the art in defining and measuring hindfoot, ankle, and subtalar alignment. It describes the transition occurring at present from two-dimensional to three-dimensional (3D) alignment measurements, which accompany the emergence of new, functional, high-resolution imaging modalities such as the weight-bearing cone-beam computerized tomography (CT) imaging. To ease and enhance the transition and acceptability of 3D alignment measurements, new acceptable standards for different clinical application are highly desirable.
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Affiliation(s)
- Sorin Siegler
- Department of Mechanical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, PA, USA.
| | - Luigi Piarulli
- Department of Mechanical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, PA, USA
| | - Jordan Stolle
- Department of Mechanical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, PA, USA
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Nha KW, Han JH, Chae SW, Choi JY. Effect of Medial Closing Wedge Distal Femoral Varization Osteotomy on Coronal Ankle and Hindfoot Alignment. Foot Ankle Int 2023; 44:330-339. [PMID: 36825582 DOI: 10.1177/10711007231154208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
BACKGROUND To date, only a few studies have reported postoperative changes in coronal ankle alignment after valgus knee correction through medial closing wedge distal femoral varization osteotomy (MCWDFO). This study aimed to measure the changes of MCWDFO on coronal ankle and hindfoot alignment. METHODS We retrospectively reviewed the radiographic findings of 27 consecutive patients (34 cases) with knee valgus malalignment who underwent MCWDFO for either lateral knee joint osteoarthritis (OA) or recurrent patellar subluxation/dislocation (RPD). Several radiographic parameters were measured and compared based on the reason for operation, followed by the status of preoperative hindfoot alignment (hindfoot alignment angle [HAA] > 4 degrees, varus; -4 degrees ≤HAA ≤ 4 degrees, neutral; HAA < -4 degrees, valgus) in each group. RESULTS Overall, pre- and postoperative hindfoot alignments were within the neutral alignment range and were not significantly changed after the operation (P > .05). Nineteen cases were for lateral knee OA and 15 were for RPD, respectively. In both groups, preoperative neutral hindfoot alignments accounted for the largest portion (52.6% in the lateral OA group; 80.0% in the RPD group). Postoperatively, regardless of the reason for operation, hindfoot alignments changed toward the neutral range in all subgroups (ie, no changes in the preoperative neutral group; increased in the valgus group; decreased in the varus group). CONCLUSION We recommend that surgeons leave the hindfoot untouched when they plan the MCWDFO to correct knee joint valgus malalignment concomitant with hindfoot valgus or varus deviation as the hindfoot malalignment appears to change toward the neutral range postoperatively. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Kyung Wook Nha
- Department of Orthopedic Surgery, Inje University, Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, South Korea
| | - Jae Hwi Han
- Department of Orthopedic Surgery, Daegu Fatima Hospital
| | - Su Whi Chae
- Department of Orthopedic Surgery, Inje University, Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, South Korea
| | - Jun Young Choi
- Department of Orthopedic Surgery, Inje University, Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, South Korea
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Correction of ankle varus deformity using patient-specific dome-shaped osteotomy guides designed on weight-bearing CT: a pilot study. Arch Orthop Trauma Surg 2023; 143:791-799. [PMID: 34562121 DOI: 10.1007/s00402-021-04164-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/01/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Dome-shaped supramalleolar osteotomies are a well-established treatment option for correcting ankle deformity. However, the procedure remains technically demanding and is limited by a two-dimensional (2D) radiographic planning of a three-dimensional (3D) deformity. Therefore, we implemented a weight-bearing CT (WBCT) to plan a 3D deformity correction using patient-specific guides. METHODS A 3D-guided dome-shaped supramalleolar osteotomy was performed to correct ankle varus deformity in a case series of five patients with a mean age of 53.8 years (range 47-58). WBCT images were obtained to generate 3D models, which enabled a deformity correction using patient-specific guides. These technical steps are outlined and associated with a retrospective analysis of the clinical outcome using the EFAS score, Foot and Ankle Outcome Score (FAOS) and visual analog pain scale (VAS). Radiographic assessment was performed using the tibial anterior surface angle (TAS), tibiotalar angle (TTS), talar tilt angle (TTA), hindfoot angle (HA), tibial lateral surface angle (TLS) and tibial rotation angle (TRA). RESULTS The mean follow-up was 40.8 months (range 8-65) and all patients showed improvements in the EFAS score, FAOS and VAS (p < 0.05). A 3-month postoperative WBCT confirmed healing of the osteotomy site and radiographic improvement of the TAS, TTS and HA (p < 0.05), but the TTA and TRA did not change significantly (p > 0.05). CONCLUSION Dome-shaped supramalleolar osteotomies using 3D-printed guides designed on WBCT are a valuable option in correcting ankle varus deformity and have the potential to mitigate the technical drawbacks of free-hand osteotomies. LEVEL OF EVIDENCE Level 5 case series.
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Kim J, Rajan L, Kumar P, Kim JB, Lee WC. Lower limb alignment in patients with primary valgus ankle arthritis: A comparative analysis with patients with varus ankle arthritis and healthy controls. Foot Ankle Surg 2023; 29:72-78. [PMID: 36229331 DOI: 10.1016/j.fas.2022.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND While it is commonly acknowledged that the combined effect of lower limb orientation and ankle and hindfoot alignment play a fundamental role in ankle arthritis, supramalleolar/lower limb alignment has received less attention in valgus ankle arthritis. The purpose of this study was to analyze the lower limb alignment of patients with valgus ankle arthritis with primary origin, compared to that of varus ankle arthritis and normal controls. We hypothesized that patients with valgus ankle arthritis would have the opposite pattern of lower limb alignment as those with varus ankle arthritis. METHODS A retrospective radiographic analysis was performed on 61 patients (62 ankles, mean age, 59.3 ± 12 years) with primary valgus ankle arthritis. On preoperative radiographs, seven parameters, including talar tilt angle, medial distal tibial angle (MDTA), talar center migration, anterior distal tibial angle, talo-first metatarsal (Meary's) angle, hindfoot moment arm (HMA), and mechanical axis deviation (MAD), were measured and compared to those of primary varus ankle arthritis (n = 55; mean age, 59.7 ± 8.1 years) and control patients (n = 59; mean age, 29.3 ± 7.3 years). RESULTS The valgus group had a significantly lower mean MDTA than the control group (p < 0.0001), indicating a varus distal tibial plafond in comparison to the control group. Meary's angle and HMA were significantly lower in the valgus group compared to the varus group (p < 0.05 and p < 0.0001, respectively), indicating a lower medial longitudinal arch and valgus hindfoot alignment. On whole limb radiographs, the valgus group showed a greater MAD than the control group, indicating varus lower limb alignment (p < 0.05). However, the MAD did not differ significantly between the valgus and varus groups (p = 0.7031). CONCLUSION Our findings indicate that a significant proportion of ankles with primary valgus arthritis have a varus tibial plafond and a varus lower limb mechanical axis. This study contributes to our understanding of primary valgus ankle arthritis and suggests that lower limb alignment should be analyzed and considered throughout valgus ankle arthritis realignment procedures.
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Affiliation(s)
- Jaeyoung Kim
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Lavan Rajan
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | | | - Ji-Beom Kim
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, 45, Apgujeong-ro 30 gil, Gangnam-gu, Seoul, Republic of Korea
| | - Woo-Chun Lee
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, 45, Apgujeong-ro 30 gil, Gangnam-gu, Seoul, Republic of Korea.
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Hayashi D, Roemer FW, Link T, Li X, Kogan F, Segal NA, Omoumi P, Guermazi A. Latest advancements in imaging techniques in OA. Ther Adv Musculoskelet Dis 2022; 14:1759720X221146621. [PMID: 36601087 PMCID: PMC9806406 DOI: 10.1177/1759720x221146621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 12/05/2022] [Indexed: 12/28/2022] Open
Abstract
The osteoarthritis (OA) research community has been advocating a shift from radiography-based screening criteria and outcome measures in OA clinical trials to a magnetic resonance imaging (MRI)-based definition of eligibility and endpoint. For conventional morphological MRI, various semiquantitative evaluation tools are available. We have lately witnessed a remarkable technological advance in MRI techniques, including compositional/physiologic imaging and automated quantitative analyses of articular and periarticular structures. More recently, additional technologies were introduced, including positron emission tomography (PET)-MRI, weight-bearing computed tomography (CT), photon-counting spectral CT, shear wave elastography, contrast-enhanced ultrasound, multiscale X-ray phase contrast imaging, and spectroscopic photoacoustic imaging of cartilage. On top of these, we now live in an era in which artificial intelligence is increasingly utilized in medicine. Osteoarthritis imaging is no exception. Successful implementation of artificial intelligence (AI) will hopefully improve the workflow of radiologists, as well as the level of precision and reproducibility in the interpretation of images.
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Affiliation(s)
- Daichi Hayashi
- Department of Radiology, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA,Department of Radiology, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, USA
| | - Frank W. Roemer
- Department of Radiology, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, USA,Department of Radiology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Thomas Link
- Department of Radiology, University of California San Francisco, San Franciso, CA, USA
| | - Xiaojuan Li
- Department of Radiology, Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA
| | - Feliks Kogan
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - Neil A. Segal
- Department of Rehabilitation Medicine, The University of Kansas, Kansas City, KS, USA
| | - Patrick Omoumi
- Department of Radiology, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
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Weight-bearing cone-beam CT: the need for standardised acquisition protocols and measurements to fulfill high expectations-a review of the literature. Skeletal Radiol 2022; 52:1073-1088. [PMID: 36350387 DOI: 10.1007/s00256-022-04223-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/24/2022] [Accepted: 10/24/2022] [Indexed: 11/11/2022]
Abstract
Weight bearing CT (WBCT) of the lower extremity is gaining momentum in evaluation of the foot/ankle and knee. A growing number of international studies use WBCT, which is promising for improving our understanding of anatomy and biomechanics during natural loading of the lower extremity. However, we believe there is risk of excessive enthusiasm for WBCT leading to premature application of the technique, before sufficiently robust protocols are in place e.g. standardised limb positioning and imaging planes, choice of anatomical landmarks and image slices used for individual measurements. Lack of standardisation could limit benefits from introducing WBCT in research and clinical practice because useful imaging information could become obscured. Measurements of bones and joints on WBCT are influenced by joint positioning and magnitude of loading, factors that need to be considered within a 3-D coordinate system. A proportion of WBCT studies examine inter- and intraobserver reproducibility for different radiological measurements in the knee or foot with reproducibility generally reported to be high. However, investigations of test-retest reproducibility are still lacking. Thus, the current ability to evaluate, e.g. the effects of surgery or structural disease progression, is questionable. This paper presents an overview of the relevant literature on WBCT in the lower extremity with an emphasis on factors that may affect measurement reproducibility in the foot/ankle and knee. We discuss the caveats of performing WBCT without consensus on imaging procedures and measurements.
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3D measurement techniques for the hindfoot alignment angle from weight-bearing CT in a clinical population. Sci Rep 2022; 12:16900. [PMID: 36207422 PMCID: PMC9546907 DOI: 10.1038/s41598-022-21440-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 09/27/2022] [Indexed: 11/30/2022] Open
Abstract
Cone-beam CT (CBCT) scans now enable accurate measurements on foot skeletal structures with the advantage of observing these in 3D and in weight-bearing. Among the most common skeletal deformities, the varus/valgus of the hindfoot is the most complex to be represented, and a number of measure proposals have been published. This study aims to analyze and to compare these measurements from CBCT scans in a real clinical population with large such deformity. Ten patients with severe acquired adult flatfoot and indication for surgery underwent CBCT scans (Carestream, USA) while standing on that leg, before and after surgical correction. Corresponding 3D shape of each bone of the distal shank and hindfoot were defined (Materialise, Belgium). Six different techniques from the literature were used to calculate the varus/valgus deformity, i.e. the inclination of the hindfoot in the frontal plane of the shank. Standard clinical measurements by goniometers were taken for comparison. According to these techniques, and starting from a careful 3D reconstruction of the relevant foot skeletal structures, a large spectrum of measurements was found to represent the same hindfoot alignment angle. Most of them were very different from the traditional clinical measures. The assessment of the pre-operative valgus deformity and of the corresponding post-operative correction varied considerably. CBCT finally allows 3D assessment of foot deformities in weight-bearing. Measurements from the different available techniques do not compare well, as they are based on very different approaches. It is recommended to be aware of the anatomical and functional concepts behind these techniques before clinical and surgical conclusions.
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15
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Does tibialis posterior dysfunction correlate with a worse radiographic overall alignment in progressive collapsing foot deformity? A retrospective study. Foot Ankle Surg 2022; 28:995-1001. [PMID: 35177330 DOI: 10.1016/j.fas.2022.02.004] [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: 11/22/2021] [Revised: 01/24/2022] [Accepted: 02/10/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Posterior Tibial Tendon (PTT) dysfunction is considered to have an important role in Progressive Collapsing Foot Deformity (PCFD). The objective of our study was to assess the relationship between PTT status and three-dimensional foot deformity in PCFD. METHODS Records from 25 patients with PCFD were included for analysis. The PTT was considered deficient in patients with a positive single heel rise test or a deficit in inversion strength. Three-dimensional foot deformity was assessed using the Foot and Ankle Offset (FAO) from Weight-Bearing-CT imaging. Hindfoot valgus, midfoot abduction and medial longitudinal arch collapse were assessed on X-Rays using hindfoot moment arm, talonavicular coverage angle and Meary's angle respectively. Deland and Rosenberg MRI classifications were used to classify PTT degeneration. RESULTS PCFD with PTT deficit (13/25) had a mean FAO of 7.75 + /- 3.8% whereas PCFD without PTT deficit had a mean FAO of 6.68 + /- 3.9% (p = 0.49). No significant difference was found between these groups on the hindfoot moment arm and the talonavicular coverage angle (respectively p = 0.54 and 0.32), whereas the Meary's angle was significantly higher in case of PCFD with PTT deficit (p = 0.037). No significant association was found between PTT degeneration on MRI and FAO. CONCLUSION PCFD associated three-dimensional deformity, hindfoot valgus and midfoot abduction were not associated with PTT dysfunction. PTT dysfunction was only associated with a worse medial longitudinal arch collapse in our study. Considering our results, it does not appear that PTT is the main contributor to PCFD. LEVEL OF EVIDENCE Level III, Retrospective Comparative Study.
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16
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Burssens A, Susdorf R, Krähenbühl N, Peterhans U, Ruiz R, Barg A, Hintermann B. Supramalleolar Osteotomy for Ankle Varus Deformity Alters Subtalar Joint Alignment. Foot Ankle Int 2022; 43:1194-1203. [PMID: 35786021 DOI: 10.1177/10711007221108097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Although correction of ankle and hindfoot deformity after supramalleolar osteotomy has been investigated extensively, the specific effect on the subtalar joint alignment remains elusive. This can be attributed to the limitations of 2-dimensional measurements, which impede an exact quantification of the 3-dimensional subtalar joint alignment. Therefore, we determined both the ankle, hindfoot, and subtalar joint alignment before and after supramalleolar osteotomy using autogenerated 3-dimensional measurements based on weightbearing CT imaging. METHODS Twenty-nine patients with a mean age of 50.4±10.6 years were retrospectively analyzed in a pre-post study design using weightbearing CT. Inclusion criteria were correction of ankle varus deformity by an opening wedge (n = 22) or dome osteotomy (n = 7). Exclusion criteria consisted of an additional inframalleolar arthrodesis or osteotomy. Corresponding 3-dimensional bone models were reconstructed to compute following autogenerated measurements of the ankle- and hindfoot alignment: tibial anterior surface (TAS), tibiotalar surface (TTS), talar tilt (TT) angle, hindfoot angle (HA). In addition, the talocalcaneal angle (TCA) in the axial (TCAax), sagittal (TCAsag), and coronal (TCAcor) plane were measured to assess the subtalar joint alignment. RESULTS The preoperative radiographic parameters of the ankle joint alignment (TAS=88±4 degrees, TTS=82±7 degrees, TT=5.8±4.9 degrees) improved significantly relative to their postoperative equivalents (TAS = 93±5 degrees, TTS = 88±7 degrees, TT=4.2±4.5 degrees; P < .05). The following radiographic parameters of the hindfoot and subtalar joint alignment improved significantly from preoperatively (8.7±8.9 degrees, TCAax = 41±10 degrees, TCAsag = 48±10 degrees) to postoperatively (HA=4.5±8.6 degrees, TCAax = 38±9 degrees, TCAsag = 44±11 degrees; P < .05). No significant differences could be detected in the coronal plane alignment of the subtalar joint (TCAcor) pre- compared to postoperatively (P > .05). CONCLUSION This study quantified the 3-dimensional ankle, hindfoot, and subtalar joint alignment after a solitary supramalleolar osteotomy. We found alterations in the subtalar joint alignment, which occurred by 2 to 3 degrees in each anatomic plane. However, before recommendations can be given related to inframalleolar procedures in conjunction to supramalleolar osteotomies, further studies on the variation of subtalar joint alignment change are needed.
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Affiliation(s)
- Arne Burssens
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
- Department of Orthopaedics, University Hospital of Ghent, Ghent, OVL, Belgium
| | - Roman Susdorf
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
| | - Nicola Krähenbühl
- Department of Orthopaedics, University Hospital Basel, Basel, Switzerland
| | - Ursina Peterhans
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
| | - Roxa Ruiz
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
| | - Alexej Barg
- Department of Orthopaedics, Trauma and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, USA
| | - Beat Hintermann
- Department of Orthopaedics, Kantonsspital Baselland, Liestal, Switzerland
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17
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Haraguchi N, Asano K, Arimoto T, Niki H, Ota K, Ozeki T, Gibu M, Kanetake Y, Tsutaya A. Supramalleolar Lateral Opening-Wedge Osteotomy in Conjunction With Progressive Collapsing Foot Deformity Reconstruction for PCFD With Ankle Instability. Foot Ankle Int 2022; 43:1070-1083. [PMID: 35642666 DOI: 10.1177/10711007221093344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Reconstruction of progressive collapsing foot deformity (PCFD) with ankle instability (PCFD class E) remains a substantial challenge to orthopaedic surgeons. We report the outcomes of PCFD class E treated by means of a relatively standard PCFD foot reconstruction approach with the addition of a supramalleolar lateral opening-wedge osteotomy. METHODS We conducted a retrospective study of 13 patients (15 ankles) who underwent this procedure for PCFD class E between 2010 and 2021. Mean follow-up time was 3.8 (range, 2-6.3) years. Clinical assessment was based on the Japanese Society for Surgery of the Foot (JSSF) ankle/hindfoot scale as well as a Self-Administered Foot Evaluation Questionnaire (SAFE-Q). Radiographic assessments, including identification of the mechanical ankle joint axis point and a modified valgus Takakura-Tanaka osteoarthritis grade, were recorded. RESULTS The mean JSSF score improved significantly from 45.2 preoperatively to 83.9 postoperatively (P < .001). SAFE-Q scores at the final follow-up were 70.1 for the pain and pain-related subscale, 75.4 for the physical functioning and daily living subscale, 83.0 for the social functioning subscale, 74.4 for the shoe-related subscale, and 78.1 for the general health and well-being subscale. Radiographic measurements showed improvement in the tibiotalar tilt angle (average improvement: 5.4 degrees); orientation of the talus joint line relative to the ground (average improvement: 14.0 degrees); anteroposterior talus-first metatarsal angle (average improvement: 11.2 degrees), talonavicular coverage angle (average improvement: 21.6 degrees), and lateral talus-first metatarsal angle (average improvement: 17.0 degrees). Postoperatively, the mechanical ankle joint axis point moved medially for all patients and into the medial half of the ankle joint for 7 patients. The modified osteoarthritis stage improved postoperatively in most cases. CONCLUSION In this select and relatively small group of patients who had a supramalleolar lateral opening-wedge osteotomy combined with PCFD reconstruction, we measured general improvement in JSSF scores and radiographic variables. Long-term durability of the procedure remains unknown. This procedure may be an option for preserving the ankle joint in treatment of PCFD class E with osteoarthritis of the ankle. LEVEL OF EVIDENCE Level IV, therapeutic.
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Affiliation(s)
- Naoki Haraguchi
- Department of Orthopaedic Surgery, St. Marianna University Yokohama Seibu Hospital, Asahi-ku, Yokohama, Kanagawa, Japan
| | - Kota Asano
- Department of Orthopaedic Surgery, St. Marianna University Yokohama Seibu Hospital, Asahi-ku, Yokohama, Kanagawa, Japan
| | - Tatsuya Arimoto
- Department of Orthopaedic Surgery, St. Marianna University Yokohama Seibu Hospital, Asahi-ku, Yokohama, Kanagawa, Japan
| | - Hisateru Niki
- Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Miyamae-ku, Kawasaki, Kanagawa, Japan
| | - Koki Ota
- Department of Orthopaedic Surgery, Tokyo Metropolitan Police Hospital, Nakano-ku, Tokyo, Japan
| | - Takuma Ozeki
- Department of Orthopaedic Surgery, Tokyo Metropolitan Police Hospital, Nakano-ku, Tokyo, Japan
| | - Masaki Gibu
- Department of Orthopaedic Surgery, Tokyo Metropolitan Police Hospital, Nakano-ku, Tokyo, Japan
| | - Yoshihiko Kanetake
- Department of Radiology, Tokyo Metropolitan Police Hospital, Nakano-ku, Tokyo, Japan
| | - Atsushi Tsutaya
- Department of Radiology, Tokyo Metropolitan Police Hospital, Nakano-ku, Tokyo, Japan
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Vuurberg G, Tümer N, Sierevelt I, Dobbe JGG, Hemke R, Wiegerinck JJ, Maas M, Kerkhoffs GMMJ, Tuijthof GJM. Translation of 3D Anatomy to 2D Radiographic Angle Measurements in the Ankle Joint: Validity and Reliability. FOOT & ANKLE ORTHOPAEDICS 2022; 7:24730114221112945. [PMID: 35898795 PMCID: PMC9310239 DOI: 10.1177/24730114221112945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background: The objective consisted of 2 elements, primarily to define 2 bone geometry variations of the ankle that may be of prognostic value on ankle instability and secondly to translate these bone variations from a 3D model to a simple 2D radiographic measurement for clinical use. Methods: The 3D tibial and talar shape differences derived from earlier studies were translated to two 2D radiographic parameters: the medial malleolar height angle (MMHA) and talar convexity angle (TCA) respectively to ensure clinical use. To assess validity, the MMHA and TCA were measured on 3D polygons derived from lower leg computed tomographic (CT) scans and 2D digitally reconstructed radiographs (DRRs) of these polygons. To assess reliability, the MMHA and TCA were measured on standard radiographs by 2 observers calculating the intraclass correlation coefficient (ICC). Results: The 3D angle measurements on the polygons showed substantial to excellent agreement with the 2D measurements on DRR for both the MMHA (ICC 0.84-0.93) and TCA (ICC 0.88-0.96). The interobserver reliability was moderate with an ICC of 0.58 and an ICC of 0.64 for both the MMHA and TCA, respectively. The intraobserver reliability was excellent with an ICC of 0.96 and 0.97 for the MMHA and the TCA, respectively. Conclusion: Two newly defined radiographic parameters (MMHA and TCA) are valid and can be assessed with excellent intraobserver reliability on standard radiographs. The interobserver reliability was moderate and indicates training is required to ensure uniformity in measurement technique. The current method may be used to translate more variations in bone shape prior to implementation in clinical practice. Level of Evidence: Level III, cohort study.
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Affiliation(s)
- Gwendolyn Vuurberg
- Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, the Netherlands
- Amsterdam Collaboration on Health & Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam, the Netherlands
- Radiology and Nuclear Medicine, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Department of Radiology and Nuclear Medicine, Rijnstate Hospital, Arnhem, the Netherlands
| | - Nazli Tümer
- Department of Biomechanical Engineering, Delft University of Technology (TU Delft), the Netherlands
| | - Inger Sierevelt
- Specialized Centre for Orthopedic Research and Education (SCORE), Xpert Orthopedics, Amsterdam, the Netherlands
- Spaarne Gasthuis Academy, Orthopedic Department, Hoofddorp
| | - Johannes G. G. Dobbe
- Department of Biomedical Engineering and Physics, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Robert Hemke
- Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, the Netherlands
- Amsterdam Collaboration on Health & Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam, the Netherlands
- Radiology and Nuclear Medicine, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Jan Joost Wiegerinck
- Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Bergman Clinics, Rijswijk, the Netherlands
| | - Mario Maas
- Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, the Netherlands
- Amsterdam Collaboration on Health & Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam, the Netherlands
- Radiology and Nuclear Medicine, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Gino M. M. J. Kerkhoffs
- Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, the Netherlands
- Amsterdam Collaboration on Health & Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam, the Netherlands
| | - Gabriëlle J. M. Tuijthof
- Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
- Academic Center for Evidence-based Sports Medicine (ACES), Amsterdam, the Netherlands
- Amsterdam Collaboration on Health & Safety in Sports (ACHSS), AMC/VUmc IOC Research Center, Amsterdam, the Netherlands
- Department of Research Engineering, Faculty Health, Medicine & Life Science, Maastricht University, Maastricht, the Netherlands
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Kang HW, Kim DY, Park GY, Lee DO, Lee DY. Coronal plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis. Foot Ankle Int 2022; 43:928-936. [PMID: 35484934 DOI: 10.1177/10711007221088566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND We do not yet fully understand how the subtalar joint position is related to the varus osteoarthritic ankle joint. The purposes of this study were (1) to investigate the coronal orientation of the calcaneus relative to the talus according to the ankle osteoarthritis stage, talar tilt (TT), and (2) to determine if there is TT threshold at which apparent subtalar compensation begins to fade. METHODS We retrospectively reviewed 132 ankles that underwent weightbearing computed tomography (WBCT) for varus ankle osteoarthritis. The TT, subtalar inclination angle (SIA), and calcaneal inclination angle (CIA) were measured using WBCT. Ankles were divided into 5 groups according to Takakura stage and 2 groups according to the apparent compensation status of the subtalar joint and compared the index of the inclination of the subtalar joint relative to the ankle (SIA) or the index of the inclination of the calcaneus relative to the ankle (CIA). Additionally, we explored the relationship between SIA or CIA and the TT. RESULTS Apparent subtalar compensation (SIA and CIA) was significantly lower in Takakura stages 3b and 4. The SIA and CIA significantly differed according to the apparent compensation status (P < .001 and P = .030, respectively). The CIA of the noncompensated group varied widely, whereas the SIA was relatively constant. Furthermore, TT was greater than 9.5, which indicated a high probability of a noncompensated heel (sensitivity, 92.6%; specificity, 89.7%). CONCLUSION The position of the calcaneus appears compensatory with coronal plane orientation in varus ankle osteoarthritis when the TT is ≤9.5 degrees. LEVEL OF EVIDENCE Level IV, case series.
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Affiliation(s)
- Ho Won Kang
- Department of Orthopedic Surgery, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - Dae-Yoo Kim
- Department of Orthopedic Surgery, Busan Paik Hospital, Busan, Republic of Korea
| | - Gil Young Park
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dong-Oh Lee
- Department of Orthopedic Surgery, SNU Seoul Hospital, Seoul, Republic of Korea
| | - Dong Yeon Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
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20
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Hu M, Xu X, Mei J. Ankle joint pressure change before and after subtalar joint arthrodesis in varus and valgus malalignment of the tibia. J Orthop Surg (Hong Kong) 2022; 30:10225536221098478. [PMID: 35467445 DOI: 10.1177/10225536221098478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Purpose: The compensation mechanism of subtalar joint in ankle with varus or valgus deformity is controversial and not well established. This biomechanical study aims to investigate how subtalar joint arthrodesis will affect the ankle joint pressure in varus and valgus malalignment of the tibia. Methods: Eight fresh-frozen human cadaver legs were tested in this study. A custom-made fixture was utilized and a total of 600N was applied to simulate weight-bearing. Intra-articular sensors (TeckScan) were inserted in the ankle joint to demonstrate the ankle joint pressure. Conditions include: Neutral, 5°, 10°, 15° and 20° varus, 5°, 10°, 15° and 20° valgus. Results: After the fusion of the subtalar joint, when the tibia is gradually inverted, the inside pressure of the ankle joint gradually increases, and the pressure on the outside of the ankle joint gradually decreases. When the tibia is gradually eversion, the pressure on the outside of the ankle joint gradually increases, and the inside of the ankle joint gradually decreases. Conclusions: After the subtalar joint is fused, the compensatory activity of the subtalar joint disappears, and the regulation of the pressure in the ankle joint will be lost. We hypothesized that the inversion compensation of the subtalar joint is more likely to occur than the eversion compensation.
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Affiliation(s)
- Mu Hu
- School of Medicine, 12476Tongji University, China
| | - Xiangyang Xu
- Department of Orthopedics, 66281Ruijin Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Jiong Mei
- School of Medicine, 12476Tongji University, China.,Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, China
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21
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Hakukawa S, Kaneda K, Oki S, Harato K, Yamada Y, Niki Y, Nagura T, Nakamura M, Jinzaki M. Knee varus alters three-dimensional ankle alignment in standing- a study with upright computed tomography. BMC Musculoskelet Disord 2022; 23:321. [PMID: 35379211 PMCID: PMC8981632 DOI: 10.1186/s12891-022-05235-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 03/16/2022] [Indexed: 02/08/2023] Open
Abstract
Background For knee osteoarthritis (OA) treatment, it is important to correct the lower limb alignment including the foot. However, in the upright position, lower limb alignment is generally assessed from the body surface or radiographs, and it is a challenge to capture the exact characteristics of three-dimensional lower limb alignment. The purpose of the study was to measure lower limb alignment in patients with knee OA using upright computed tomography (CT) and radiography, and to identify features of knee joint deformity. Methods A total of 45 limbs in 25 patients with knee OA were enrolled. The subjects underwent both upright CT and radiography for the whole lower limb in the standing position. The joint angles were calculated on both images. The degree of knee OA was classified according to Kellgren-Lawrence (KL) grade by referring to radiography, which is mainly based on the degree of articular cartilage loss and severity of osteophytes, and the characteristics or correlation between knee and ankle joint in each group was investigated. Results In KL-I, there was an association between varus of the knee joint and internal rotation of the talocrural joint (r = 0.76, P < 0.05). In KL-II, there was an association between varus of the knee joint and eversion of the subtalar joint (r = 0.63, P < 0.05) and talocrural joint (r = − 0.65, P < 0.05). In KL-III, there was an association between varus of the knee joint and internal rotation of the subtalar joint (r = − 0.62, P < 0.05), and in KL-IV, there was an association between varus of the knee joint and internal rotation of the subtalar joint (r = − 0.58, P < 0.05). Conclusions The lower limb alignment of patients with knee OA in the standing position was found that as knee OA worsened, it became apparent that compensatory knee joint alignment depended on the ankle joint rather than the subtalar joint. The results may help in the rehabilitation of patients with knee OA, since the ankle joint alignment has a significant impact on the knee joint during coarse movements involving load.
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Affiliation(s)
- Satoshi Hakukawa
- Department of Orthopedic Surgery, Keio University Graduate School of medicine, 35, Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan
| | - Kazuya Kaneda
- Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan.
| | - Satoshi Oki
- Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan
| | - Kengo Harato
- Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan
| | - Yoshitake Yamada
- Department of Radiology, Keio University School of medicine, Tokyo, Japan
| | - Yasuo Niki
- Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan
| | - Takeo Nagura
- Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan.,Clinical Biomechanics, Keio University School of medicine, Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopedic Surgery, Keio University Graduate School of medicine, 35, Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Department of Orthopedic Surgery, Keio University School of medicine, Tokyo, Japan
| | - Masahiro Jinzaki
- Department of Radiology, Keio University School of medicine, Tokyo, Japan
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22
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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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23
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Kim J, Henry JK, Kim JB, Lee WC. Dome Supramalleolar Osteotomies for the Treatment of Ankle Pain with Opposing Coronal Plane Deformities Between Ankle and the Lower Limb. Foot Ankle Int 2022; 43:474-485. [PMID: 34693786 DOI: 10.1177/10711007211050639] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The dome-type osteotomy is a powerful technique for deformity correction of the limb. However, there is limited information about the utility of dome supramalleolar osteotomy (SMO) in ankle joint preservation surgery. This study aimed to describe the technique and indications for dome SMO in distal tibial malalignment. METHODS Twenty-three patients (23 ankles) who underwent dome SMO with a 2-year follow-up were reviewed. Dome SMO was indicated when there were opposing deformities in the ankle and lower limb mechanical axis (ie, varus ankle deformity with valgus lower limb alignment and vice versa) where inherent translation following conventional wedge-type osteotomies could worsen the deformity of the entire lower limb. Patients were divided into 2 groups based on preoperative ankle alignment: the varus ankle group (n = 11) and the valgus ankle group (n = 12). The radiographic correction was assessed using 6 parameters from weightbearing ankle and hindfoot alignment views. In addition, the lower limb mechanical axis was assessed with ankle center deviation (ACD) from the hip-knee (HK) line on the whole limb radiograph, and the weightbearing line (WBL) point was measured to identify changes in the weightbearing load within the ankle joint. RESULTS Preoperatively, the varus ankle group had varus ankle deformity (tibiotalar angle [TTA], 76.5 ± 5.8 degrees) with valgus lower limb mechanical axis, whereas the valgus ankle group had valgus ankle deformity (TTA, 99.1 ± 4.5 degrees) with varus lower limb mechanical axis alignment. Postoperatively, a significant improvement in the ankle alignment and the lower limb mechanical axis was observed in both groups. The ACD significantly changed toward the HK line, suggesting an improved lower limb mechanical axis, and the WBL point showed a significant shift of the weightbearing axis toward the uninvolved area within the ankle joint. CONCLUSION Dome SMO demonstrated a successful correction of local deformity while simultaneously realigning the hip-knee-ankle axis toward neutral. Additionally, an effective load shifting toward an uninvolved area within the ankle joint was observed. LEVEL OF EVIDENCE Level IV, case series.
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Affiliation(s)
| | | | - Ji-Beom Kim
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, Seoul, Republic of Korea
| | - Woo-Chun Lee
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, Seoul, Republic of Korea
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24
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Hernigou P, Safar A, Hernigou J, Ferre B. Subtalar axis determined by combining digital twins and artificial intelligence: influence of the orientation of this axis for hindfoot compensation of varus and valgus knees. INTERNATIONAL ORTHOPAEDICS 2022; 46:999-1007. [PMID: 35138455 DOI: 10.1007/s00264-022-05311-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/10/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE Previous studies evaluating hindfoot and knee alignment have suggested compensation between the knee and the hindfoot deformities. However, these studies did not investigate the influence of the orientation of the subtalar axis on the results. MATERIAL AND METHODS Using computed tomography data of patients without osteoarthritis, digital twins, and artificial intelligence, we identified the orientation of the axis of the subtalar joint. Compensation was evaluated in the subtalar joint according to angular knee deformity and subtalar axis direction. RESULTS With the inclination angle defined as the angle between the axis and the XY plane (horizontal) and the deviation angle defined as the angle between the projection of axis on the XZ plane, the inclination angle of the subtalar helical axis showed an average angle of 35.3° (range 5° to 48°). The mean deviation angle for the helical axis was 6.4° (range - 4° to + 12°). Our findings indicated that an increase of the inclination angle of the subtalar axis tends to limit adjustment in the hindfoot alignment toward re-balance of the whole lower limb toward a neutral weight-bearing axis when malalignment of the knee occurs. CONCLUSION Malalignment of the knee and different compensations in the hindfoot contribute to various combined deformities in the population: associated valgus or varus deformities and inverse associations of varus/valgus deformities.
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Affiliation(s)
- Philippe Hernigou
- Orthopedic Department, Henri Mondor Hospital, University Paris East, Paris, France.
| | - Adonis Safar
- Orthopedic Department, EpiCURA Baudour Hornu Hospital, Mons, Belgium
| | - Jacques Hernigou
- Orthopedic Department, EpiCURA Baudour Hornu Hospital, Mons, Belgium
| | - Bruno Ferre
- Institut Monégasque de Médecine & Chirurgie Sportive, 98000, Monaco, Monaco
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25
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Ahrend MD, Baumgartner H, Ihle C, Histing T, Schröter S, Finger F. Influence of axial limb rotation on radiographic lower limb alignment: a systematic review. Arch Orthop Trauma Surg 2022; 142:3349-3366. [PMID: 34596760 PMCID: PMC9522705 DOI: 10.1007/s00402-021-04163-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 09/01/2021] [Indexed: 12/26/2022]
Abstract
INTRODUCTION The influence of limb malrotation on long-leg radiographs (LLR) is frequently discussed in literature. This systematic review aimed to describe the influence of limb rotation on alignment measurements alone and in combination with knee flexion, and determine its clinical impact. MATERIALS AND METHODS A literature search was conducted in June 2021 using the databases MEDLINE, Cochrane, Web of Science (Clarivate Analytics), and Embase. The search term ((radiograph OR X-ray) AND (position OR rotation) AND limb alignment) was used. Database query, record screening, and study inclusion and exclusion were performed by two reviewers independently. Experimental studies (using either specimens or synthetic bones) or clinical studies (prospective or retrospective using radiographs of patients) analyzing the influence of limb rotation on anatomic and mechanical limb alignment measurements were included. Characteristics and results of the included studies were summarized, simplified, and grouped for comparison to answer the research question. Studies were compared descriptively, and no meta-analysis was performed. RESULTS A total of 22 studies were included showing large heterogeneity, comprising studies with cadavers, patients, and synthetic bones. Most studies (7 out of 8) reported that external rotation (ER) causes less apparent valgus and leads to more varus and internal rotation (IR) causes more valgus and leads to less varus. However, there is no consensus on the extent of rotation influencing alignment measures. Studies reported about an average change of > 2° (n = 4) and < 2° (n = 4) hip-knee-ankle angle (HKA) between 15°IR and 15°ER. There is a consensus that the impact of rotation on mechanical alignment is higher if additional sagittal knee angulation, such as knee flexion, is present. All five studies analyzing the influence of rotation combined with knee flexion (5°-15°) showed an HKA change of > 2° between 15°IR and 15°ER. CONCLUSION Malrotation is frequently present on LLR, possibly influencing the measured alignment especially in knees with extension deficit. Surgeons must consider this when measuring and treating deformities (high tibial osteotomy or total knee arthroplasties), and analyzing surgical outcomes. Especially in patients with osteoarthritis with knee extension deficits or postoperative swelling, the effect of malrotation is significantly greater.
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Affiliation(s)
- Marc-Daniel Ahrend
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard-Karls University of Tübingen, Schnarrenberg-Str. 95, 72076 Tübingen, Germany
- AO Research Institute Davos, Davos, Switzerland
| | - Heiko Baumgartner
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard-Karls University of Tübingen, Schnarrenberg-Str. 95, 72076 Tübingen, Germany
| | - Christoph Ihle
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard-Karls University of Tübingen, Schnarrenberg-Str. 95, 72076 Tübingen, Germany
| | - Tina Histing
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard-Karls University of Tübingen, Schnarrenberg-Str. 95, 72076 Tübingen, Germany
| | - Steffen Schröter
- Department of Traumatology and Reconstructive Surgery, Diakonie Klinikum GmbH Jung-Stilling-Krankenhaus, Siegen, Germany
| | - Felix Finger
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard-Karls University of Tübingen, Schnarrenberg-Str. 95, 72076 Tübingen, Germany
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26
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Kim J, Kim JB, Lee WC. Outcomes of Joint Preservation Surgery in Valgus Ankle Arthritis Without Deltoid Ligament Insufficiency. Foot Ankle Int 2021; 42:1419-1430. [PMID: 34109853 DOI: 10.1177/10711007211016001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND To date, information about the role of proximal alignment correction in treating nontraumatic valgus ankle arthritis is limited. This study aimed to report outcomes of realignment surgery, including supramalleolar correction in valgus arthritic ankles without evidence of deltoid ligament insufficiency. METHODS Thirteen patients (13 ankles) who underwent joint preservation surgery for valgus ankle arthritis without evidence of deltoid ligament insufficiency were reviewed. Medial opening wedge supramalleolar osteotomy (n = 11) and varization supramalleolar dome osteotomy (n = 2) were performed to realign the hip-knee-ankle-hindfoot axis. Concomitant hindfoot correction was accompanied with either medial displacement calcaneal osteotomy (n = 8) or subtalar arthrodesis (n = 5). Pain, functional outcome (Foot Function Index [FFI]), radiographic arthritis grade (grades 0-4), 9 plain radiographic parameters, and 2 weightbearing computed tomography parameters were evaluated pre- and postoperatively. All patients completed a minimum 2-year follow-up. RESULTS Preoperatively, 10 ankles (77%) demonstrated a varus tibial plafond, and 3 ankles (23%) demonstrated a valgus or neutral tibial plafond. Postoperatively, radiographic arthritis grade improved in all except 1 patient, and the mean talar tilt angle improved from 5.5 to 1.7 degrees. The mean pain score (visual analog scale) decreased significantly from 7.3 to 2.5 (P < .05), and the mean FFI improved significantly from 57.7 to 18.6 (P < .001). None of the patients underwent conversion to joint-sacrificing procedures at the latest follow-up. CONCLUSION This study demonstrated a possible relationship between lower limb malalignment and valgus ankle arthritis. Realignment surgery, including supramalleolar osteotomies, which straightens the mechanical axis and decreases the slope of the tibial plafond, may be a reasonable approach in joint preservation of valgus ankle arthritis without deltoid ligament insufficiency. LEVEL OF EVIDENCE Level IV, case series.
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Affiliation(s)
- Jaeyoung Kim
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Ji-Beom Kim
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, Seochogu, Seoul, Republic of Korea
| | - Woo-Chun Lee
- Seoul Foot and Ankle Center, Dubalo Orthopaedic Clinic, Seochogu, Seoul, Republic of Korea
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27
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Arena CB, Sripanich Y, Leake R, Saltzman CL, Barg A. Assessment of Hindfoot Alignment Comparing Weightbearing Radiography to Weightbearing Computed Tomography. Foot Ankle Int 2021; 42:1482-1490. [PMID: 34109833 DOI: 10.1177/10711007211014171] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Hindfoot alignment view (HAV) radiographs are widely utilized for 2-dimensional (2D) radiographic assessment of hindfoot alignment; however, the development of weightbearing computed tomography (WBCT) may provide more accurate methods of quantifying 3-dimensional (3D) hindfoot alignment. The aim of this study was to compare the 2D calcaneal moment arm measurements on HAV radiographs with WBCT. METHODS This retrospective cohort study included 375 consecutive patients with both HAV radiographs and WBCT imaging. Measurement of the 2D hindfoot alignment moment arm was compared between both imaging modalities. The potential confounding influence of valgus/varus/neutral alignment, presence of hardware, and motion artifact were further analyzed. RESULTS The intraclass correlation coefficients (ICCs) of interobserver and intraobserver reliability for measurements with both imaging modalities were excellent. Both modalities were highly correlated (Spearman coefficient, 0.930; P < .001). HAV radiographs exhibited a mean calcaneal moment arm difference of 3.9 mm in the varus direction compared with WBCT (95% CI, -4.9 to 12.8). The difference of hindfoot alignment between both modalities was comparable in subgroups with neutral/valgus/varus alignment, presence of hardware, and motion artifact. CONCLUSION Both HAV radiographs and WBCT are highly reliable and highly correlated imaging methods for assessing hindfoot alignment. Measurements were not influenced by severe malalignment, the presence of hardware, or motion artifact on WBCT. On average, HAV radiographs overestimated 3.9 mm of varus alignment as compared with WBCT. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Christopher B Arena
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, USA.,Orthopedic Sports Institute, Institute for Orthopedic Research & Innovation, Coeur d'Alene, ID, USA
| | - Yantarat Sripanich
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, USA.,Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, Tung Phayathai, Ratchathewi, Bangkok, Thailand
| | - Richard Leake
- Department of Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT, USA
| | | | - Alexej Barg
- Department of Orthopaedics, Trauma and Reconstructive Surgery, University of Hamburg, Hamburg, Germany
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28
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Feng Z, Ma M, Wang Y, Yang C, Liu Z, Xia Y. Clinical and Radiological Changes of Ankle in Knee Osteoarthritis With Varus After Total Knee Arthroplasty: A Systematic Review. Front Surg 2021; 8:713055. [PMID: 34527697 PMCID: PMC8435772 DOI: 10.3389/fsurg.2021.713055] [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] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/28/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Arthritis with severe varus deformity remains a challenge in total knee arthroplasty (TKA). Until recently, surgeons aimed at a neutral lower limb alignment when performing a TKA. However, the impact of TKA on the ankle joint has been ignored. Therefore, we conducted a systematic review to assess the clinical and radiological changes in the ankle joint after TKA on knees with severe varus deformity. Methods: A systematic search was conducted in four English (PubMed, Embase, Cochrane Library, and Web of Science) and four Chinese (CBM, VIP, CNKI, and Wan Fang Database) databases. Screening of literature and extraction of data were independently performed by two researchers. The modified methodological index for non-randomized studies (MINORS) was used to assess the quality. Results: A total of eight studies were eligible, namely, four prospective and four retrospective studies. TKA resulted in a negative clinical effect in the ankle joint in patients with ankle osteoarthritis. Seven studies reported changes in the mechanical tibiofemoral angle, and four studies reported radiological changes in the hindfoot. The mean score of the MINORS was 9.8 out of eight (9-11). Conclusion: As a result of the correction of the knee osteoarthritis with severe varus deformity following mechanically aligned TKA, the radiological malalignment of the ankle joint was improved. However, some patients experience increased ankle pain after undergoing TKA, especially, if there was a residual knee varus deformity, a stiff hindfoot with varus deformity, or ankle arthritis.
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Affiliation(s)
- Zhiwei Feng
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China.,Department of Orthopaedics, Nanchong Central Hospital, The Second Clinical Institute of North Sichuan Medical College, Nanchong, China
| | - Ming Ma
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | - Yaobin Wang
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | | | - Zhongcheng Liu
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
| | - Yayi Xia
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, China
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29
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Shih HT, Liao WJ, Tu KC, Lee CH, Tang SC, Wang SP. Poor Correction Capacity of Preexisting Ankle Valgus Deformity after Total Knee Arthroplasty. J Clin Med 2021; 10:jcm10163624. [PMID: 34441920 PMCID: PMC8397202 DOI: 10.3390/jcm10163624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/02/2021] [Accepted: 08/12/2021] [Indexed: 11/16/2022] Open
Abstract
This study investigated the differences in ankle alignment changes after TKA in patients with varying preexisting ankle deformities. We retrospectively examined 90 knees with osteoarthritis and varus deformity in 78 patients who underwent TKA. Preoperative and postoperative radiographic parameters were analyzed. According to their preexisting ankle deformity, patients were assigned to the valgus or varus group. Overall, 14 (15.6%) cases were of preoperative valgus ankle deformity; the remainder were of preoperative varus ankle deformity. Hip-knee-ankle angle (HKA), tibial plafond-ground angle (PGA), and talus-ground angle (TGA) all exhibited significant correction in both groups; however, tibial plafond-talus angle (PTA) and superior space of ankle joint (SS) only changed in the varus group. The median PTA and SS significantly decreased from 1.2° to 0.3° (p < 0.001) and increased from 2.5 to 2.6 mm (p = 0.013), respectively. Notably, ∆PTA positively correlated with ∆HKA in the varus group (r = 0.247, p = 0.032) but not in the valgus group. Between-group differences in postoperative PTA (p < 0.001) and ∆PTA (p < 0.001) were significant. The degree of ankle alignment correction after TKA differed between patients with preexisting varus and valgus ankle deformities. TKA could not effectively correct the preexisting ankle valgus malalignment.
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Affiliation(s)
- Han-Ting Shih
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
| | - Wei-Jen Liao
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
| | - Kao-Chang Tu
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
| | - Cheng-Hung Lee
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
- Department of Food Science and Technology, HungKuang University, Taichung 43302, Taiwan
| | - Shih-Chieh Tang
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
| | - Shun-Ping Wang
- Department of Orthopaedics, Taichung Veterans General Hospital, Taichung 40705, Taiwan; (H.-T.S.); (W.-J.L.); (K.-C.T.); (C.-H.L.); (S.-C.T.)
- Sports Recreation and Health Management Continuing Studies-Bachelor’s Degree Completion Program, Tunghai University, Taichung 40704, Taiwan
- Correspondence: ; Tel.: +886-4-23592525 (ext. 5101)
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30
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Angular and linear measurements of adult flexible flatfoot via weight-bearing CT scans and 3D bone reconstruction tools. Sci Rep 2021; 11:16139. [PMID: 34373546 PMCID: PMC8352889 DOI: 10.1038/s41598-021-95708-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/28/2021] [Indexed: 12/14/2022] Open
Abstract
Acquired adult flatfoot is a frequent deformity which implies multiple, complex and combined 3D modifications of the foot skeletal structure. The difficult thorough evaluation of the degree of severity pre-op and the corresponding assessment post-op can now be overcome by cone-beam (CBCT) technology, which can provide access to the 3D skeletal structure in weight-bearing. This study aims to report flatfoot deformities originally in 3D and in weight-bearing, with measurements taken using two different bone segmentation techniques. 21 such patients, with indication for surgical corrections, underwent CBCT (Carestream, US) while standing on one leg. From these scans, 3D models of each bone of the foot were reconstructed by using two different state-of-the-art segmentation tools: a semi-automatic (Mimics Innovation Suite, Materialise, Belgium), and an automatic (Bonelogic Ortho Foot and Ankle, Disior, Finland). From both reconstructed models, Principal Component Analysis was used to define anatomical reference frames, and original foot and ankle angles and other parameters were calculated mostly based on the longitudinal axis of the bones, in anatomical plane projections and in 3D. Both bone model reconstructions revealed a considerable valgus of the calcareous, plantarflexion and internal rotation of the talus, and typical Meary’s angles in the lateral and transverse plane projections. The mean difference from these angles between semi-automatic and automatic segmentations was larger than 3.5 degrees for only 3 of the 32 measurements, and a large number of these differences were not statistically significant. CBCT and the present techniques for bone shape reconstruction finally provide a novel and valuable 3D assessment of complex foot deformities in weight-bearing, eliminating previous limitations associated to unloaded feet and bidimensional measures. Corresponding measurements on the bone models from the two segmentation tools compared well. Other more representative measurements can be defined in the future using CBCT and these techniques.
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31
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Bridging the Gap: The Influence of Foot and Ankle Pathomechanics in Total Knee Arthroplasty. J Am Acad Orthop Surg 2021; 29:e693-e701. [PMID: 33902070 DOI: 10.5435/jaaos-d-20-00786] [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] [Received: 06/23/2020] [Accepted: 03/23/2021] [Indexed: 02/01/2023] Open
Abstract
Altered spinopelvic mechanics can have dramatic influences on the success of hip arthroplasty as seen with concomitant hip and spine disease. Interestingly, limited focus has been directed toward a similar codependent relationship between concurrent knee and foot deformities. By bridging this interdisciplinary gap, we attempt to explore the current understanding and clinical implications of concomitant knee and foot pathology while reviewing management options for addressing this unique yet ubiquitous patient population. Multiple authors have demonstrated an inverse relationship between progressive coronal plane deformities concerning the knee and hindfoot. The utility of a conventional mechanical axis during total knee arthroplasty may be limited in the presence of foot deformity where ground reactive forces often markedly deviate with the hindfoot, potentially leading to eccentric knee loading. The use of alternative indices, such as ground mechanical axis deviation, may offer a more reliable metric for achieving an accurate neutral mechanical axis. In addition, although foot deformity and compensation can often improve to a limited degree after total knee arthroplasty, residual deformity may have deleterious effects on the success of the procedure. A comprehensive understanding of the functional relationship between the foot and the knee can allow surgeons to better guide appropriate treatment sequence, often beginning with the more symptomatic deformity. Future research is needed to further elucidate the implications and appropriate management of concomitant knee and foot deformity.
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Deng H, Mei H, Wang E, Li Q, Zhang L, Canavese F, Li L. The association between fibular status and frontal plane tibial alignment post-union in congenital pseudarthrosis of the tibia. J Child Orthop 2021; 15:261-269. [PMID: 34211603 PMCID: PMC8223089 DOI: 10.1302/1863-2548.15.200255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Controversy exists regarding fibular status related to tibial alignment after congenital pseudarthrosis of the tibia (CPT) achieves union. We aimed to determine whether fibular status affected frontal plane tibial alignment post-CPT union. METHODS Between January 2010 and December 2013, we followed 36 patients treated using a combined surgical technique (mean 6.6 years (2.2 to 9.4)). Outcome measures comprised medial proximal tibial angle, tibial diaphyseal angulation, lateral distal tibial angle (LDTA), relative intramedullary rod length and relative fibula length discrepancy. RESULTS The frequency of proximal tibial valgus deformity and ankle valgus deformity were significantly lower in the fibular integrity group than in the fibular un-integrity group (proximal tibial valgus deformity: 2/17 versus 11/19; p = 0.006; ankle valgus deformity: 10/17 versus 18/19; p = 0.016). The mean LDTA was notably higher in the fibular integrity group than in the fibular un-integrity group (81.2° (sd 6.7°) versus 71.3° (sd 6.6°); p < 0.001). A statistically significant difference was observed in relative fibula length discrepancy between patients with fibular integrity (0.06 (0 to 0.11); Malhotra grade 0, n = 6; Malhotra grade I, n = 11) and those without (0.24 (0.01 to 0.36); Malhotra grade 2, n = 2; Malhotra grade 3, n = 17; p < 0.001). Ankle valgus deformity had a significant positive correlation with proximal tibial valgus deformity (r = 0.402; p = 0.015). Patients with an intact and normal length fibula had a lower frequency of ankle valgus deformity than those with an intact but shortening fibula (1/6 versus 9/11; p = 0.035). CONCLUSION Shortening or pseudarthrosis of the fibula was associated with ankle valgus and proximal tibial valgus deformities post-CPT union. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Huajun Deng
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Haibo Mei
- Department of Pediatric Orthopaedics, Hunan Children’s Hospital, The Pediatric Academy of University of South China, Changsha, Hunan Province, China,Correspondence should be sent to: Haibo Mei, Department of Pediatric Orthopaedics, Hunan Children’s Hospital, The Pediatric Academy of University of South China, Changsha City 410007, Hunan Province, China, E-mail:
| | - Enbo Wang
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Qiwei Li
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Lijun Zhang
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Federico Canavese
- Lille University Center, Jeanne de Flandres Hospital, Department of Pediatric Orthopedics, Lille, France
| | - Lianyong Li
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China,Lianyong Li, Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang City 110004, Liaoning Province, China. E-mail:
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Espinosa N, Klammer G. The Failed Deltoid Ligament in the Valgus Misaligned Ankle-How to Treat? Foot Ankle Clin 2021; 26:391-405. [PMID: 33990260 DOI: 10.1016/j.fcl.2021.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This article deals with the treatment of a chronically failed deltoid ligament complex in the valgus misaligned ankle. This is a challenging task in every orthopedic foot and ankle surgery. Before embarking on any surgery that relates to the deltoid ligament complex, it is mandatory to analyze any underlying cause that could promote the impairment. Once this is done, it might be of value in considering anatomic reconstructions. The article provides an anatomic reconstruction technique, which should help address the problem.
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Affiliation(s)
- Norman Espinosa
- Institute for Foot and Ankle Reconstruction, Beethovenstrasse 3, Zurich 8002, Switzerland.
| | - Georg Klammer
- Institute for Foot and Ankle Reconstruction, Beethovenstrasse 3, Zurich 8002, Switzerland
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Bernasconi A, Najefi AA, Goldberg AJ. Comparison of Mechanical Axis of the Limb Versus Anatomical Axis of the Tibia for Assessment of Tibiotalar Alignment in End-Stage Ankle Arthritis. Foot Ankle Int 2021; 42:616-623. [PMID: 33218259 DOI: 10.1177/1071100720972664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Coronal plane ankle joint alignment is typically assessed using the tibiotalar angle (TTA), which relies on the anatomical axis of the tibia (AAT) and the articular surface of the talus as landmarks. Often, the AAT differs from the mechanical axis of the lower limb (MAL). We set out to test our hypothesis that the TTA using the MAL would differ from the TTA measured using the AAT in patients with ankle osteoarthritis. METHODS Standardized standing long leg radiographs of 61 ankles with end-stage osteoarthritis were analyzed. We measured the MAL and the AAT. A line was drawn along the talar articular surface (TA) and the TTA was calculated using both the MAL (MAL-TA) and the AAT (AAT-TA). The mechanical axis of the tibia (MAT) was also recorded and the MAL-MAT angle calculated. The difference between MAL-TA and AAT-TA and its correlation with the MAL-MAT angle were assessed. Intra- and interobserver agreement were measured for MAL-TA and AAT-TA. RESULTS The mean MAL-TA was 91.4 degrees (95% CI, 88.5-94.4) and the mean AAT-TA was 91.2 degrees (95% CI, 88.6-93.9). The difference ranged from -8.1 to 7.8 degrees, and was greater than 2 and 3 degrees in 42% and 18% of the patients, respectively. The difference, as an absolute value, also strongly correlated with the MAL-MAT angle (r = 0.91, P < .001). Intra- and interobserver reliability were excellent for both MAL-TA (intraclass correlation coefficient [ICC], 0.93 and 0.91, respectively) and AAT-TA (ICC, 0.91 and 0.89, respectively). CONCLUSION We recommend that surgeons consider using the MAL-TA, which relies on long leg radiographs, especially with proximal deformity, to more accurately measure coronal plane ankle joint alignment. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Alessio Bernasconi
- Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, UK
- Trauma and Orthopaedics, University Federico II of Naples, Naples, Italy
| | - Ali-Asgar Najefi
- East & North Hertfordshire NHS Trust, Lister Hospital, Stevenage, Hertfordshire, UK
| | - Andrew J Goldberg
- UCL Institute of Orthopaedics & Musculoskeletal Science, Royal National Orthopaedic Hospital, Stanmore, UK
- MSK Lab, Faculty of Medicine, Department of Surgery & Cancer, Imperial College London, London, UK
- London Ankle & Arthritis Centre, Wellington Hospital, London, UK
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Akamatsu Y, Nejima S, Tsuji M, Kobayashi H, Muramatsu S. Open-wedge high tibial osteotomy using intraoperative control of joint line convergence angle with reference to preoperative supine radiograph. Arch Orthop Trauma Surg 2021; 141:645-653. [PMID: 33417031 DOI: 10.1007/s00402-020-03738-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 12/19/2020] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Preoperative supine joint line convergence angle (JLCA) correlates with postoperative standing JLCA. Here, we compared the radiographic and clinical outcomes of knees with preoperative JLCAs of ≥ 4° and < 4° in open-wedge high tibial osteotomy (OWHTO). We hypothesized that the postoperative coronal alignment in both groups would not be affected by a change in JLCA if this change could predict before surgery. MATERIALS AND METHODS Eighty-four patients with medial knee osteoarthritis who underwent OWHTO were enrolled retrospectively. A weight-bearing line (WBL) ratio of 62% and a JCLA equivalent to the preoperative supine JLCA were anticipated in preoperative planning. These were intraoperatively set using an alignment rod and a radiolucent protractor under fluoroscopy. Soft tissue correction was defined as correction angle minus bone correction. The participants with preoperative JLCAs of < 4° (low-JLCA group) and ≥ 4° (high-JLCA group) were compared. RESULTS No significant difference in the coronal alignment was found between the groups after OWHTO. No significant differences in correction angle or bone correction were found between the groups, but the soft tissue correction in the high-JLCA group was higher than that in the low-JLCA group after OWHTO (p = 0.013). CONCLUSIONS When we controlled intraoperative JLCA, the postoperative coronal alignment was not affected by the change in JLCA and the differences in soft tissue correction between the low-JLCA and high-JLCA groups. However, overcorrection compared with the target coronal alignment remained in both groups. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Yasushi Akamatsu
- Department of Joint Surgery, Fureai Yokohama Hospital, 2-3-3, Bandai-cho, Naka-ku, Yokohama, 231-0031, Japan. .,Department of Orthopaedic Surgery, Yokohama City University Hospital, Yokohama, Japan.
| | - Shuntaro Nejima
- Department of Orthopaedic Surgery, Yokohama City University Hospital, Yokohama, Japan
| | - Masaki Tsuji
- Department of Orthopaedic Surgery, Yokohama City University Hospital, Yokohama, Japan
| | - Hideo Kobayashi
- Department of Joint Surgery, Fureai Yokohama Hospital, 2-3-3, Bandai-cho, Naka-ku, Yokohama, 231-0031, Japan.,Department of Orthopaedic Surgery, Yokohama City University Hospital, Yokohama, Japan
| | - Shuntaro Muramatsu
- Department of Joint Surgery, Fureai Yokohama Hospital, 2-3-3, Bandai-cho, Naka-ku, Yokohama, 231-0031, Japan
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Burssens A, De Roos D, Barg A, Welck MJ, Krähenbühl N, Saltzman CL, Victor J. Alignment of the hindfoot in total knee arthroplasty: a systematic review of clinical and radiological outcomes. Bone Joint J 2021; 103-B:87-97. [PMID: 33380206 DOI: 10.1302/0301-620x.103b1.bjj-2020-0143.r1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS Patients with a deformity of the hindfoot present a particular challenge when performing total knee arthroplasty (TKA). The literature contains little information about the relationship between TKA and hindfoot alignment. This systematic review aimed to determine from both clinical and radiological studies whether TKA would alter a preoperative hindfoot deformity and whether the outcome of TKA is affected by the presence of a postoperative hindfoot deformity. METHODS A systematic literature search was performed in the databases PubMed, EMBASE, Cochrane Library, and Web of Science. Search terms consisted of "total knee arthroplasty/replacement" combined with "hindfoot/ankle alignment". Inclusion criteria were all English language studies analyzing the association between TKA and the alignment of the hindfoot, including the clinical or radiological outcomes. Exclusion criteria consisted of TKA performed with a concomitant extra-articular osteotomy and case reports or expert opinions. An assessment of quality was conducted using the modified Methodological Index for Non-Randomized Studies (MINORS). The review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines and registered in the PROSPERO database (CRD42019106980). RESULTS A total of 17 studies were found to be eligible for review. They included six prospective and ten retrospective studies, and one case-control study. The effects of TKA showed a clinical improvement in the hindfoot deformity in three studies, but did not if there was osteoarthritis (OA) of the ankle (one study) or a persistent deformity of the knee (one study). The radiological alignment of the hindfoot corrected in 11 studies, but did not in the presence of a rigid hindfoot varus deformity (in two studies). The effects of a hindfoot deformity on TKA included a clinical association with instability of the knee in one study, and a shift in the radiological weightbearing axis in two studies. The mean MINORS score was 9.4 out of 16 (7 to 12). CONCLUSION TKA improves both the function and alignment of the hindfoot in patients with a preoperative deformity of the hindfoot. This may not apply if there is a persistent deformity of the knee, a rigid hindfoot varus deformity, or OA of the ankle. Moreover, a persistent deformity of the hindfoot may adversely affect the stability and longevity of a TKA. These findings should be interpreted with caution due to the moderate methodological quality of the studies which were included. Therefore, further prospective studies are needed in order to determine at which stage correction of a hindfoot deformity is required to optimize the outcome of a TKA. Cite this article: Bone Joint J 2021;103-B(1):87-97.
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Affiliation(s)
- Arne Burssens
- Department of Orthopaedics, Royal National Orthopaedic Hospital, UCL Institute of Orthopaedics and Musculoskelatal Science, Stanmore, UK.,Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
| | - Dries De Roos
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
| | - Alexej Barg
- Department of Orthopaedics, Trauma and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Matt J Welck
- Department of Orthopaedics, Royal National Orthopaedic Hospital, UCL Institute of Orthopaedics and Musculoskelatal Science, Stanmore, UK
| | - Nicola Krähenbühl
- Deparment of Orthopaedics and Traumatology, Kantonsspital Baselland, Liestal, Switzerland.,Department of Orthopaedics and Traumatology, Universitätsklinik Balgrist, Zurich, Switzerland
| | - Charles L Saltzman
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Jan Victor
- Department of Orthopaedics, University Hospital of Ghent, Ghent, Belgium
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Long-term results of subtalar arthroereisis for the treatment of symptomatic flexible flatfoot in children: an average fifteen year follow-up study. INTERNATIONAL ORTHOPAEDICS 2021; 45:657-664. [PMID: 33443598 DOI: 10.1007/s00264-020-04911-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 12/11/2020] [Indexed: 01/12/2023]
Abstract
AIM OF THE STUDY The aim of this study is to report the long-term outcomes of a homogenous series of patients who underwent subtalar arthroereisis (STA) for the treatment of symptomatic flexible flatfoot (FFF). METHODS Thirty-four pediatric patients who underwent STA with a bioabsorbable implant were enrolled and radiographic measurements, clinical outcomes, and patients' satisfaction were evaluated. RESULTS At a mean 180 months follow-up, radiographic measurements showed significant improvement. A physiological footprint and a proper hindfoot alignment were shown in more than 70% of patients. Mean AOFAS score was 90.4 ± 9.2 (72-100), mean SF-12 was 44.7 with 30 out of 34 patients (88.2%) satisfied with the procedure. CONCLUSION STA with a bioabsorbable implant showed satisfactory long-term results. Based on the data subgroup analysis, nine to 11.5 years for female and nine to 13.5 years for male appeared to be the most appropriate age for surgery.
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Haldar A, Bernasconi A, Junaid SE, Lee KHB, Welck M, Saifuddin A. 3D imaging for hindfoot alignment assessment: a comparative study between non-weight-bearing MRI and weight-bearing CT. Skeletal Radiol 2021; 50:179-188. [PMID: 32699951 DOI: 10.1007/s00256-020-03532-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/19/2020] [Accepted: 06/29/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE The authors compared measurements of hindfoot alignment on MR imaging with weight-bearing CT (WB-CT) to establish the degree of correlation. Forty-seven feet in 44 patients had weight-bearing CT and MRI studies performed on the same day. MATERIALS AND METHODS Hindfoot alignment on MRI was assessed by two radiologists who calculated tibiocalcaneal angle (TCA) and calcaneofibular ligament angle (CFLA). On WB-CT, foot ankle offset (FAO), calcaneal offset (CO) and hindfoot angle (HA) were assessed by a senior Foot and Ankle Surgeon using dedicated software. Pearson correlation coefficient was used to evaluate the correlation between these measurements. RESULTS The study group comprised 27 males and 17 females with a mean age of 45 years (range 13-79 years). A statistically significant positive correlation was identified between TCA on MRI and all measurements of hindfoot alignment on WB-CT (p = 0.001-0.005). The CFLA on MRI only had significant correlation with CO on WB-CT (p = 0.03). A significant negative correlation was observed between both MRI parameters (p < 0.001). CONCLUSION A highly significant correlation between tibiocalcaneal angle on non-weight-bearing ankle MR imaging and hindfoot alignment measurements on weight-bearing CT was identified.
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Affiliation(s)
- Anil Haldar
- Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, HA7 4LP, UK.
| | - Alessio Bernasconi
- Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, HA7 4LP, UK
| | - Syed Ehtesham Junaid
- Department of Imaging, Royal National Orthopaedic Hospital, Stanmore, HA7 4LP, UK
| | - Kar Ho Brian Lee
- Department of Diagnostic and Interventional Radiology, Kwong Wah Hospital, 25 Waterloo Road, Yau Ma Tei, Kowloon, Hong Kong
| | - Matthew Welck
- Foot and Ankle Unit, Royal National Orthopaedic Hospital, Stanmore, HA7 4LP, UK
| | - Asif Saifuddin
- Department of Imaging, Royal National Orthopaedic Hospital, Stanmore, HA7 4LP, UK
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Godoy-Santos AL, Bernasconi A, Bordalo-Rodrigues M, Lintz F, Lôbo CFT, de Cesar Netto C. Weight-bearing cone-beam computed tomography in the foot and ankle specialty: where we are and where we are going - an update. Radiol Bras 2021; 54:177-184. [PMID: 34108765 PMCID: PMC8177673 DOI: 10.1590/0100-3984.2020.0048] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/17/2020] [Indexed: 12/24/2022] Open
Abstract
Cone-beam computed tomography (CBCT) has been applied in dentistry and medicine for nearly two decades. Its application in the foot and ankle specialty has grown exponentially in recent years. Weight-bearing CBCT allows clinicians to obtain weight-bearing images that can be viewed in all three planes and to construct three-dimensional models, similar to those constructed from traditional CT scans, as well as exposing patients to less radiation than do traditional CT scans. This technology has revolutionized diagnoses, improving the understanding of various lesions and surgical planning in the foot and ankle specialty. Ongoing studies of the use of weight-bearing CBCT in foot and ankle surgery are focused on fully automated and semi-automated three-dimensional measurements, as well as bone segmentation, mapping of the distances/orientation of the joints, and the production of customized implants. The aims of this review article are to show the evolution of this emerging tool in the foot and ankle specialty, to update those in related specialties on its use in current clinical practice, and to indicate where the research community is heading.
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Affiliation(s)
- Alexandre Leme Godoy-Santos
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil., Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.,Correspondence: Dr. Alexandre Leme Godoy-Santos. Laboratório Professor Manlio Mario Marco Napoli - HC-FMUSP. Rua Doutor Ovídio Pires de Campos, 333, Cerqueira César. São Paulo, SP, Brazil, 05403-010.
| | | | - Marcelo Bordalo-Rodrigues
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil
| | | | - Carlos Felipe Teixeira Lôbo
- Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil
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Steadman J, Sripanich Y, Rungprai C, Mills MK, Saltzman CL, Barg A. Comparative assessment of midfoot osteoarthritis diagnostic sensitivity using weightbearing computed tomography vs weightbearing plain radiography. Eur J Radiol 2020; 134:109419. [PMID: 33259992 DOI: 10.1016/j.ejrad.2020.109419] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/02/2020] [Accepted: 11/16/2020] [Indexed: 12/31/2022]
Abstract
PURPOSE Accuracy in diagnosing osteoarthritis in the midfoot using weightbearing plain radiography (WBPR) remains questionable due to the overlapping osseous architecture present, occluding visualization. Weightbearing computed tomography (WBCT), providing clearer bony landmark identification and joint space visualization, can also be used for evaluation. The aim of this project is to perform a standardized retrospective intra-patient analysis identifying the discrepancy of midfoot osteoarthritis diagnosis and osteoarthritis severity grading between WBPR and WBCT. METHODS AND MATERIALS A cohort of 302 patient feet was acquired from an internal, consecutive patient database using detailed inclusion criteria. The musculoskeletal radiologist interpretation of the WBCT and WBPR of each specimen was then assessed for any direct diagnosis or mention of osteoarthritic signs in specific articulations of 3 midfoot joint groups (Chopart, "central", and tarsometatarsal). WBPR sensitivity and specificity metrics were calculated with WBCT considered the gold standard for comparison. RESULTS From the WBPR radiologist interpretation, we found diagnostic sensitivity of 72.5 % and specificity of 87.9 % for Chopart joints; 61.5 % sensitivity, and 96.1 % specificity for central joints; and 68.4 % sensitivity, and 92.9 % specificity for tarsometatarsal joints. The severity of degenerative changes was also consistently underestimated when interpreted from WBPR relative to WBCT. CONCLUSIONS In this series, midfoot osteoarthritis was often undetected on WBPR. WBCT imaging facilitates an earlier, more reliable diagnosis and grading of midfoot osteoarthritis relative to WBPR.
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Affiliation(s)
- Jesse Steadman
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT 84108, USA.
| | - Yantarat Sripanich
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT 84108, USA; Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, 315 Rajavithi Road, Tung Phayathai, Ratchathewi, Bangkok 10400, Thailand.
| | - Chamnanni Rungprai
- Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, 315 Rajavithi Road, Tung Phayathai, Ratchathewi, Bangkok 10400, Thailand.
| | - Megan K Mills
- Department of Radiology and Imaging Sciences, University of Utah, 30 N. 1900 E. #1A071, Salt Lake City, UT 84132, USA.
| | - 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; Department of Orthopaedics, Trauma and Reconstructive Surgery, University of Hamburg, Martinistrasse 52, 20246 Hamburg, Germany.
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Dagneaux L, Dufrenot M, Bernasconi A, Bedard NA, de Cesar Netto C, Lintz F. Three-Dimensional Biometrics to Correlate Hindfoot and Knee Coronal Alignments Using Modern Weightbearing Imaging. Foot Ankle Int 2020; 41:1411-1418. [PMID: 32698631 DOI: 10.1177/1071100720938333] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Previous studies focusing on the effects of knee surgery on hindfoot alignment have suggested some degree of compensation between the knee and the hindfoot. However, these studies did not investigate a preoperative relationship in patients without end-stage knee osteoarthritis using 3-dimensional (3D) biometrics. The purpose of this study was to investigate the relationship between knee and hindfoot alignment using 3D weightbearing imaging. METHODS This retrospective comparative study included 95 lower limbs with weightbearing computed tomography and low-dose biplanar radiograph investigations. Cases with a history that may have caused a change in lower limb alignment were excluded. Hindfoot and knee alignments were measured using foot ankle offset (FAO) and hip-knee-ankle (HKA) angle, respectively. Patients were separated into 3 groups according to the knee deformity to investigate the distribution of FAO in each group. RESULTS The mean (SD) FAO was 2% (7%) for the knee varus group, 1% (6%) for the neutral knee group, and 4% (5%) for the valgus knee group (P = .12). Fifty-three percent of patients with knee valgus showed a pathological hindfoot valgus (P = .04). We found a positive but moderate correlation between hindfoot valgus and HKA (ρ = 0.53; P = .01). Female sex was associated with higher FAO (3% ± 4% vs 0.6% ± 6%; P = .009). CONCLUSION This feasibility study suggests a new opportunity using 3D biometrics to understand the relationship between knee and hindfoot alignment and to highlight different patterns of combined deformities in further investigations. LEVEL OF EVIDENCE Level III, comparative study.
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Affiliation(s)
- Louis Dagneaux
- Department of Orthopaedic Surgery, Lower Limb Surgery Unit, Lapeyronie University Hospital, Montpellier, France.,Montpellier University, Montpellier, France
| | | | - Alessio Bernasconi
- Trauma and Orthopaedics, University of Naples Federico II, Naples, Italy
| | - Nicholas A Bedard
- Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, IA, USA
| | - Cesar de Cesar Netto
- Department of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USA
| | - François Lintz
- Department of Foot and Ankle Surgery, Union Private Hospital, Saint Jean, Toulouse, France
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