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Abstract
The purpose of this study was to estimate the rate of spontaneous improvement in tibial metaphyseal-diaphyseal angle (TMDA) in physiologic bowing in comparison to that in Blount disease and to provide reference values of TMDA for monitoring patients with highly suspected to have Blount disease.We retrospectively reviewed patients with physiologic bowing meeting the following criteria:(1) TMDA greater than 9° before 36 months of age at initial evaluation;(2) two or more standing long bone radiographs available; and(3) follow-up conducted up to resolution of deformity.Patients with Blount disease had(1) more than 2 standing long bone radiographs obtained before 36 months of age and(2) underwent no treatment during the period in which these images were obtained.TMDA measurements were obtained from 174 patients with physiologic bowing and 32 patients with Blount disease. Rates of TMDA improvement were adjusted by multiple factors using a linear mixed model, with sex and laterality as fixed effects and age and individual patients as the random effects.In the physiologic bowing group, TMDA improved significantly, by 3° per 6 months and by 6° per year. Changes in TMDA were not significant in the Blount disease group.Knowing the rate of TMDA change can be helpful for physicians seeking to monitor infants with suspected as having Blount disease with a high TMDA and to avoid unnecessary repeat radiographic evaluations.
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Affiliation(s)
- Byoung Kyu Park
- Division of Orthopaedic Surgery, Severance Children's Hospital
| | - Kun Bo Park
- Division of Orthopaedic Surgery, Severance Children's Hospital
| | - Yoon Hae Kwak
- Division of Orthopaedic Surgery, Severance Children's Hospital
| | - Seokhwan Jin
- Division of Orthopaedic Surgery, Severance Children's Hospital
| | - Hyun Woo Kim
- Division of Orthopaedic Surgery, Severance Children's Hospital
| | - Hoon Park
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Jeong BO, Kim TY, Baek JH, Jung H, Song SH. Following the correction of varus deformity of the knee through total knee arthroplasty, significant compensatory changes occur not only at the ankle and subtalar joint, but also at the foot. Knee Surg Sports Traumatol Arthrosc 2018; 26:3230-3237. [PMID: 29349665 DOI: 10.1007/s00167-018-4840-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/11/2018] [Indexed: 12/25/2022]
Abstract
PURPOSE This study aimed to assess radiological changes of the ankle joint, subtalar joint and foot following the correction of varus deformity of the knee with total knee arthroplasty (TKA). It was hypothesized that following the correction of varus deformity by TKA, compensatory reactions would occur at the subtalar joint in accordance with the extent of the correction. METHODS For this prospective study, 375 knees of patients who underwent TKA between 2011 and 2012 were enrolled. The varus angle of the knee, talar tilt of the ankle joint (TT), ground-talar dome angle of the foot (GD), anterior surface angle of the distal tibia and lateral surface angle of the distal tibia, heel alignment ratio (HR), heel alignment angle (HA), and heel alignment distance (HD) were measured on radiographs obtained pre-operatively and at post-operative 6 months. RESULTS The mean correction angle in varus deformity of the knee was 10.8 ± 4.1°. TT and GD changed significantly from 0.4 ± 1.9° and 6.5 ± 3.1° pre-operatively to 0.1 ± 1.8° and 0.2 ± 2.1°, respectively (p = 0.007, p < 0.001). No correlation was found between the preop-postop variance in mechanical axis of the lower extremity (MA) and TT, but there was a strong correlation between the preop-postop variance in MA and GD (r = 0.701). HR, HA and HD also changed significantly post-operatively, and the preop-postop variance in MA showed correlations with the preop-postop variances in HR, HA and HD (r = 0.206, - 0.348, and - 0.418). TT and the three indicators of hindfoot alignment all shifted to varus whereas GD was oriented in valgus. CONCLUSION Following the correction of varus deformity of the knee through TKA, significant compensatory changes occurred not only at the ankle and subtalar joints, but also at the foot. The findings of this study are useful in predicting the orientation of changes in the ankle and subtalar joints and the foot following TKA, and in determining the sequence of surgery when both the ankle and knee have a problem. In other words, changes in the parts of the lower extremity below the ankle joint following the correction of varus deformity of the knee must be considered when TKA is planned and performed. Patients who have problems at the ankle, subtalar, and foot joints in addition to varus deformity of the knee are recommended to undergo knee joint correction first. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Bi O Jeong
- Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea.
| | - Tae Yong Kim
- Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea
| | - Jong Hun Baek
- Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea
| | - Hyuk Jung
- Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea
| | - Seung Hyun Song
- Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, South Korea
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Sakamoto Y, Ishijima M, Kinoshita M, Liu L, Suzuki M, Kim SG, Kamata K, Tokita A, Kaneko H, Shimizu T, Kaneko K, Nozawa M. Association between leg bowing and serum alkaline phosphatase level regardless of the presence of a radiographic growth plate abnormality in pediatric patients with genu varum. J Bone Miner Metab 2018; 36:447-453. [PMID: 28664247 DOI: 10.1007/s00774-017-0851-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 05/24/2017] [Indexed: 12/01/2022]
Abstract
When children around 2 years of age show leg bowing and diseases are ruled out based on radiographic findings without conducting blood tests, they are classified as "physiologic" genu varum. Since whether or not physiologic genu varum is associated with bone metabolism is unclear, this study was conducted to clarify the association between genu varum and bone metabolism in children. Thirty-five pediatric patients with genu varm who visited our out-patient clinic were enrolled. While two of the 35 children had nutritional rickets, showing abnormalities on both blood test (ALP, ≥1000 IU/L; iPTH, >65 pg/mL and 25(OH)D, ≤20 ng/mL) and radiographs (such as cupping, fraying or splaying), five of 35 children showed abnormalities on blood tests but not radiographs. While metaphyseal-diaphyseal angle (MDA) correlated with serum 25-hydroxy vitamin D (r = -0.35, p = 0.04) and magnesium (r = -0.36, p = 0.04), MDA and femorotibial angle (FTA) correlated with alkaline phosphatase (r = 0.43, p = 0.01 and r = 0.51, p = 0.006, respectively). A ridge regression analysis adjusted for age and body mass index indicated that ALP was associated with MDA and FTA. A logistic regression analysis adjusted for age and BMI indicated that higher ALP influenced an MDA >11°, which indicates the risk for the progression of genu varum (odds ratio 1.002, 95% confidence interval 1.0003-1.003, p = 0.021). The higher ALP (+100 IU), the higher risk of an MDA >11° (odds ratio 1.22). In conclusion, genu varum is associated with the alkaline phosphatase level regardless of the presence of radiographic abnormalities in the growth plate in children.
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Affiliation(s)
- Yuko Sakamoto
- Department of Orthopaedics, Juntendo University Nerima Hospital, 3-1-1, Takanodai, Nerima-ku, Tokyo, 117-8421, Japan.
| | - Muneaki Ishijima
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
| | - Mayuko Kinoshita
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Lizu Liu
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
- Sportology Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mitsuyoshi Suzuki
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Sung-Gon Kim
- Department of Orthopaedics, Juntendo University Nerima Hospital, 3-1-1, Takanodai, Nerima-ku, Tokyo, 117-8421, Japan
| | - Koichi Kamata
- Department of Orthopaedics, Juntendo University Nerima Hospital, 3-1-1, Takanodai, Nerima-ku, Tokyo, 117-8421, Japan
| | | | - Haruka Kaneko
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Toshiaki Shimizu
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kazuo Kaneko
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Masahiko Nozawa
- Department of Orthopaedics, Juntendo University Nerima Hospital, 3-1-1, Takanodai, Nerima-ku, Tokyo, 117-8421, Japan
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Morin V, Pailhé R, Duval BR, Mader R, Cognault J, Rouchy RC, Saragaglia D. Gait analysis following medial opening-wedge high tibial osteotomy. Knee Surg Sports Traumatol Arthrosc 2018; 26:1838-1844. [PMID: 28251263 DOI: 10.1007/s00167-017-4421-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 01/03/2017] [Indexed: 12/14/2022]
Abstract
PURPOSE High tibial osteotomy (HTO) is used to treat young and active patients with knee osteoarthritis (OA) and varus deformity. The medial compartment OA alters the patients' gait. METHODS A prospective study was carried out in 21 consecutive patients operated for HTO due to knee OA with varus deformity. There were 14 men and 7 women, with a median age of 51.9 years (38-64). Their gait was analyzed preoperatively and at 1 year postoperatively, and compared to a healthy control group. Clinical assessment (KOOS, WOMAC, Lysholm, and SF-36 scores) was also performed preoperatively and postoperatively. RESULTS Patients with medial compartment OA had altered gait relative to the control population. Their walking speed was slower, step length was shorter, and single-leg stance time was shorter, while the double-leg stance time was longer (P < 0.001). Step width was not different between the two groups preoperatively (n.s.), but it was wider in the patient group postoperatively (P = 0.003). There were no differences in the patients' gait parameters before and after the osteotomy (n.s.). However, there was an improved perception of walking so that it is no longer different from controls (n.s.). The KOOS, WOMAC, Lysholm and SF-36 scores improved after HTO. The preoperative median of 7° varus (1-11) was corrected to 3° valgus (0-6). CONCLUSION Medial compartment OA with varus deformity leads to gait modifications. HTO does not alter the time-distance parameters of gait; however, patients have improved perception of their walking ability. HTO leads to excellent results for knee function, and improves quality of life without modifying the gait pattern. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Vincent Morin
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France.
| | - Régis Pailhé
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
| | - Brice Rubens Duval
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
| | - Roch Mader
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
| | - Jérémy Cognault
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
| | - René-Christopher Rouchy
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
| | - Dominique Saragaglia
- Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Echirolles, France
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Ginesin E, Norman D, Peskin B. Knee Alignment and Its Significance: Is It Really Different in Various Population Groups? Isr Med Assoc J 2018; 20:109-110. [PMID: 29431306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Eyal Ginesin
- Department of Orthopedic Surgery, Rambam Medical Center, Haifa, Israel
| | - Doron Norman
- Department of Orthopedic Surgery, Rambam Medical Center, Haifa, Israel
| | - Bezalel Peskin
- Department of Orthopedic Surgery, Rambam Medical Center, Haifa, Israel
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van Egmond N, van Grinsven S, van Loon CJ. Is There A Difference In Outcome Between Two Types Of Valgus Unloading Braces? A Randomized Controlled Trial. Acta Orthop Belg 2017; 83:690-699. [PMID: 30423680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The short-term clinical and radiographic outcomes of two different valgus unloading braces were compared in patients with medial knee osteoarthritis (OA) and a varus leg alignment. A RCT was performed in 100 patients (50 Bledsoe Thruster brace, 50 SofTec OA brace) with symptomatic medial knee OA and a varus leg alignment. Outcomes were the visual analogue scale pain and satisfaction, Dutch Western Ontario and McMaster Universities Osteoarthritis Index, SF-12, 6-Minutes Walking Test, hip-knee-ankle alignment, analgesic use, complications and compliance after a follow-up of 2 and 12 weeks. The clinical and radiographic outcomes were not significant different between both groups. Almost all clinical outcomes improved in both groups at follow-up compared to baseline. 24% of the patients discontinued using the brace. No significant differences in clinical and radiographic outcomes were found between both groups after 2 and 12 weeks follow-up. Both braces were effective in the treatment of varus medial knee OA. Complications and compliance remains a problem.
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Bennett HJ, Shen G, Cates HE, Zhang S. Effects of toe-in and toe-in with wider step width on level walking knee biomechanics in varus, valgus, and neutral knee alignments. Knee 2017; 24:1326-1334. [PMID: 28970124 DOI: 10.1016/j.knee.2017.08.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 08/23/2017] [Accepted: 08/27/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Increased peak external knee adduction moments exist for individuals with knee osteoarthritis and varus knee alignments, compared to healthy and neutrally aligned counterparts. Walking with increased toe-in or increased step width have been individually utilized to successfully reduce 1st and 2nd peak knee adduction moments, respectfully, but have not previously been combined or tested among all alignment groups. The purpose of this study was to compare toe-in only and toe-in with wider step width gait modifications in individuals with neutral, valgus, and varus alignments. METHODS Thirty-eight healthy participants with confirmed varus, neutral, or valgus frontal-plane knee alignment through anteroposterior radiographs, performed level walking in normal, toe-in, and toe-in with wider step width gaits. A 3×3 (group×intervention) mixed model repeated measures ANOVA compared alignment groups and gait interventions (p<0.05). RESULTS The 1st peak knee adduction moment was reduced in both toe-in and toe-in with wider step width compared to normal gait. The 2nd peak adduction moment was increased in toe-in compared to normal and toe-in with wider step width. The adduction impulse was also reduced in toe-in and toe-in with wider step width compared to normal gait. Peak knee flexion and external rotation moments were increased in toe-in and toe-in with wider step width compared to normal gait. CONCLUSION Although the toe-in with wider step width gait seems to be a viable option to reduce peak adduction moments for varus alignments, sagittal, and transverse knee loadings should be monitored when implementing this gait modification strategy.
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Affiliation(s)
- Hunter J Bennett
- Department of Human Movement Sciences, Old Dominion University, Norfolk, VA, USA
| | - Guangping Shen
- Department of Kinesiology, Recreation, and Sport Studies, The University of Tennessee, Knoxville, TN, USA
| | | | - Songning Zhang
- Department of Kinesiology, Recreation, and Sport Studies, The University of Tennessee, Knoxville, TN, USA.
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Wink AE, Gross KD, Brown CA, Guermazi A, Roemer F, Niu J, Torner J, Lewis CE, Nevitt MC, Tolstykh I, Sharma L, Felson DT. Varus thrust during walking and the risk of incident and worsening medial tibiofemoral MRI lesions: the Multicenter Osteoarthritis Study. Osteoarthritis Cartilage 2017; 25:839-845. [PMID: 28104540 PMCID: PMC5473434 DOI: 10.1016/j.joca.2017.01.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 12/13/2016] [Accepted: 01/10/2017] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To determine the association of varus thrust during walking to incident and worsening medial tibiofemoral cartilage damage and bone marrow lesions (BMLs) over 2 years in older adults with or at risk for osteoarthritis (OA). METHOD Subjects from the Multicenter Osteoarthritis Study (MOST) were studied. Varus thrust was visually assessed from high-speed videos of forward walking trials. Baseline and two-year MRIs were acquired from one knee per subject and read for cartilage loss and BMLs. Logistic regression with generalized estimating equations was used to estimate the odds of incident and worsening cartilage loss and BMLs, adjusting for age, sex, race, body mass index (BMI), and clinic site. The analysis was repeated stratified by varus, neutral, and valgus alignment. RESULTS 1007 participants contributed one knee each. Varus thrust was observed in 29.9% of knees. Knees with thrust had 2.17 [95% CI: 1.51, 3.11] times the odds of incident medial BML, 2.51 [1.85, 3.40] times the odds of worsening medial BML, and 1.85 [1.35, 2.55] times the odds of worsening medial cartilage loss. When stratified by alignment, varus knees also had significantly increased odds of these outcomes. CONCLUSION Varus thrust observed during walking is associated with increased odds of incident and worsening medial BMLs and worsening medial cartilage loss. Increased odds of these outcomes persist in varus-aligned knees.
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Affiliation(s)
- A E Wink
- Department of Anatomy and Neurobiology, Boston University, Boston, MA, USA.
| | - K D Gross
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA; Department of Physical Therapy, MGH Institute of Health Professions, Boston, MA, USA.
| | - C A Brown
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.
| | - A Guermazi
- Quantitative Imaging Center, Department of Radiology, Boston University School of Medicine, Boston, MA, USA.
| | - F Roemer
- Quantitative Imaging Center, Department of Radiology, Boston University School of Medicine, Boston, MA, USA; Department of Radiology, University of Erlangen-Nuremberg, Erlangen, Germany.
| | - J Niu
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA.
| | - J Torner
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA.
| | - C E Lewis
- Department of Medicine, UAB, Birmingham, AL, USA.
| | - M C Nevitt
- Department of Epidemiology and Biostatistics, UCSF, San Francisco, CA, USA.
| | - I Tolstykh
- Department of Epidemiology and Biostatistics, UCSF, San Francisco, CA, USA.
| | - L Sharma
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
| | - D T Felson
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester NHS Foundation, Manchester, UK.
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Deep K, Picard F, Baines J. Dynamic knee behaviour: does the knee deformity change as it is flexed-an assessment and classification with computer navigation. Knee Surg Sports Traumatol Arthrosc 2016; 24:3575-3583. [PMID: 27714437 DOI: 10.1007/s00167-016-4338-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/22/2016] [Indexed: 11/25/2022]
Abstract
PURPOSE The aim of this study was to assess the kinematics of arthritic knees prior to TKA. The hypothesis was that the arthritic knee follows distinct patterns with regard to deformity in coronal plane as it flexes from extended position. METHOD Data from 585 consecutive arthritic knees that had undergone TKA using two non-image-based navigation systems were included in the study. Coronal plane alignment given by the femoro-tibial mechanical angle (FTMA) was recorded in extension, 30°, 60°, 90° and maximum flexion prior to making any bony cuts or ligamentous releases. RESULTS Complete data were available for 512 (87.5 %) of arthritic knees. It was found that pre-implant arthritic knees behaved in different distinct patterns from full extension to 90° flexion. These patterns in FTMA from extension through to 90° of flexion were classified into 4 major types (1, 2, 3, and 4) and 8 subgroups (1A, 1B, 2A, 2B, 3, 4A, 4B, 4C) for varus and valgus knees. Beyond 90° of flexion, there were no distinct or consistent patterns. There were differences between varus and valgus knee deformities not only in overall numbers (73.8 % varus vs. 21.1 % valgus) but also in kinematic behaviour. Only 14.1 % of total knees had a consistent deformity (Type 1A) which remained the same throughout the range of flexion. 14.1 % knees actually become opposite deformity as the knee flexes; thus, varus becomes valgus and valgus becomes varus as the knee flexes (Type 3 and 4C). CONCLUSION This study has observed and categorised distinct patterns which arthritic knees follow in the coronal plane as it flexes. This dynamic change during flexion will have bearing on collateral releases that are traditionally done based on deformity in extension or 90° flexion mainly. This may be the underlying cause of flexion instability especially for Types 3 and 4C knees if collateral soft tissue release is done based on deformity in extension. Full significance of this remains unknown and will need further investigation. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Kamal Deep
- Department of Orthopaedics, Golden Jubilee National Hospital, Agamemnon Street, Clydebank, Glasgow, G81 4DY, UK.
| | - Frederic Picard
- Department of Orthopaedics, Golden Jubilee National Hospital, Agamemnon Street, Clydebank, Glasgow, G81 4DY, UK
| | - Joseph Baines
- Department of Orthopaedics, Golden Jubilee National Hospital, Agamemnon Street, Clydebank, Glasgow, G81 4DY, UK
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Ferrazzoli D, Veneziano G, Bettiga S, Pezzoli G, Frazzitta G. Freezing of gait improved by treatment of genu recurvatum: a possible peripheral modulation of a central mechanism? Eur J Phys Rehabil Med 2015; 51:351-352. [PMID: 24963605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- D Ferrazzoli
- Department of Parkinson Disease and Movement Disorders Rehabilitation, Ospedale Generale di Zona "Moriggia‑Pelascini", Gravedona ed Uniti, Como, Italy -
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Staubli AE, Jacob HAC. Evolution of open-wedge high-tibial osteotomy: experience with a special angular stable device for internal fixation without interposition material. Int Orthop 2010; 34:167-72. [PMID: 19921189 PMCID: PMC2899355 DOI: 10.1007/s00264-009-0902-2] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 10/14/2009] [Accepted: 10/14/2009] [Indexed: 12/17/2022]
Abstract
Surgical correction of bowed legs should be performed as early as possible. Overload osteoarthritis, even without significant varus deformity of the knee, is a further indication for open-wedge high-tibial osteotomy. Progression of damage to the joint surfaces due to overloading can be significantly retarded by realigning the extremity with the aim to, at least, reduce overload on the medial compartment to a value close to physiological. Significant improvement to open-wedge high-tibial osteotomy (OWHTO) has been made on two fronts: (a) by the use of a more appropriate surgical technique and (b) by promoting osteogenesis through an angular-stable fixation device with just the correct amount of elasticity. A retrospective study of 53 consecutive cases in which no interposition material was used to fill the wedge, with gap openings between 5 mm and 20 mm, showed that ossification of the gap always progressed from the lateral hinge towards the medial side. Standard radiographs showed 75% of the gap filled in with new bone within 6-18 months. In conclusion, we believe that open-wedge high-tibial osteotomy using the TomoFix plate has proved to be successful in treating unicompartmental gonarthrosis, even without bone grafts or bone-substitute material.
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Affiliation(s)
- Alex E Staubli
- Orthopaedic Surgery, Privatklinik Sonnmatt, 6000 Lucerne 15, Switzerland.
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