scholarly journals Suture anchor stabilization of symptomatic accessory navicular in adolescents: Clinical and radiographic outcomes

2020 ◽  
Vol 28 (2) ◽  
pp. 230949902091894
Author(s):  
Masataka Kakihana ◽  
Yuki Tochigi ◽  
Takayuki Yamazaki ◽  
Masanori Ohashi ◽  
Satoru Ozeki
Keyword(s):  
Tilt Angle ◽  
Suture Anchor ◽  
Weight Bearing ◽  
Bone Union ◽  
First Metatarsal ◽  
Radiographic Outcomes ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Accessory Navicular ◽  
Stabilization Technique

Background: Screw fixation used in modified Kidner procedures to treat persistent symptomatic accessory navicular in adult cases is often challenging in adolescent cases with a small accessory fragment. The present study aimed to document the clinical effect of a suture anchor stabilization technique applicable to such cases where osteosynthesis is considered an ideal outcome. Methods: Consecutive clinical cases who received this surgical treatment from 2009 to 2016 were retrospectively reviewed. The focus of interest included radiographic union of the accessory bone, changes in symptoms evaluated using a validated clinical outcome scale introduced by the Japanese Society for Surgery of the Foot, and changes in the medial arch bony alignment measured in lateral weight-bearing plain radiographs. Results: Twenty-two feet in 15 individuals (11 females and 4 males, age at surgery 10–16 years) were identified. In 14 feet (64%), radiographic bone union was confirmed within 8 weeks postoperatively. At the final follow-up ranging 12–51 months postoperation, the clinical scores have significantly improved ( p < 0.001) to 96 ± 5.71 (mean ± standard deviation, range 87–100), from 54 preoperatively. Radiographic measurements revealed significant postoperative increase of the sagittal talar tilt angle ( p < 0.001, increment 4 ± 3°, range 0–11) and the talo-first metatarsal angle ( p < 0.001, increment 5 ± 4°, range 0–12). No significant changes were identified in the calcaneal pitch angle, first metatarsal tilt angle, calcaneo-navicular angle, and the navicular height. Conclusion: Despite the modest bone union rate, the clinical outcomes suggest distinct symptom-relieving effect, at least in the short- to midterm, while the radiographic measurements suggest positive biomechanical effects. The present suture-anchor stabilization concept appears to be a promising treatment option for persistent symptomatic accessory navicular in adolescent cases.

The Influence of Percentage Weight-Bearing on Foot Radiographs

2018 ◽  
Vol 12 (4) ◽  
pp. 363-369 ◽  
Author(s):  
Trevor J. Shelton ◽  
Sohni Singh ◽  
Eduardo Bent Robinson ◽  
Lorenzo Nardo ◽  
Eva Escobedo ◽  
...  
Keyword(s):  
Body Weight ◽  
External Rotation ◽  
Weight Bearing ◽  
Case Series ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Valgus Angle ◽  
Percentage Weight ◽  
A Prospective Study

Introduction: Clinical decisions are often made on weight-bearing radiographs. However, it is unknown whether various weight-bearing conditions alter specific radiographic measurements. The purpose of this study was to determine whether percentage weight-bearing influences radiographic measurements of the normal foot. Methods: A prospective study with 20 healthy individuals had radiographs of the foot under 5 weight-bearing conditions (non–weight-bearing, 10% body weight, 25% body weight, 50% body weight, and 100% body weight). Measurements were made of hallux valgus angle (HVA), 1-2 intermetatarsal angle (IMA), talonavicular coverage angle (TNCA), talocalcaneal angle (TCA), forefoot width, LisFranc distance, cuboid height to ground (CHG), and talo–first metatarsal angle (TMA) of each weight-bearing condition. Statistical differences of each measurement for each weight-bearing condition were determined. Results: The TNCA and TCA increased significantly, whereas the CHG decreased significantly with increased percentage body weight. There were no differences in HVA, IMA, forefoot width, LisFranc distance, and TMA with increased percentage body weight. Conclusions: This study shows an increase in TNCA and TCA, and decrease in CHG, demonstrating a flattening of the medial arch, increasing hindfoot valgus, and midfoot external rotation and abduction with increasing percentage body weight applied to a foot. Percentage weight-bearing does not change radiographs in the foot between 25% and 100% weight-bearing. The clinical relevance of this finding is that graduated postinjury or postoperative weight-bearing regimens may only be relevant if the patient is either less than or greater than 25% of body weight on their extremity. Levels of Evidence: Case Series, Level IV: Prospective

scholarly journals Radiographic Measurements Associated with the Natural Progression of the Hallux Valgus Deformity during at Least Two Years of Follow-up

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002 ◽  
Author(s):  
Kyoung Min Lee ◽  
Seung Yeol Lee ◽  
Sonya Ahmed ◽  
Byung Chae Cho ◽  
Moon Seok Park ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Binary Logistic Regression ◽  
Valgus Deformity ◽  
Binary Logistic Regression Analysis ◽  
First Metatarsal ◽  
Hallux Valgus Deformity ◽  
Metatarsal Angle ◽  
Radiographic Measurements

Category: Bunion Introduction/Purpose: There have been few longitudinal studies regarding hallux valgus deformity. This retrospective study aimed to investigate the radiographic measurements associated with the progression of hallux valgus deformity during at least two years of follow-up. Methods: Seventy adult patients (mean age, 58.0 years; standard deviation [SD], 12.3 years; 13 males and 57 females) with hallux valgus who were followed-up for at least two years and underwent weight-bearing foot radiography were included. Radiographic measurements included the hallux valgus angle (HVA), hallux interphalangeal angle, intermetatarsal angle (IMA), metatarsus adductus angle, distal metatarsal articular angle (DMAA), tibial sesamoid position, anteroposterior (AP) talo-first metatarsal angle, and lateral talo-first metatarsal angle. Progression of hallux valgus deformity was defined as an increase of 5 degrees or more in the HVA during follow-up. Patients were divided into progressive and non-progressive groups. Binary logistic regression analysis was performed to identify factors that significantly affect the progression of hallux valgus deformity. The correlation between change in HVA and changes in other radiographic indices during follow-up was analyzed. Results: Eighteen out of 70 patients showed progression of 5 degrees or more in the HVA during the mean follow-up of 47.0 months (SD, 19.8 months). The DMAA (p=0.027) and AP talo-first metatarsal angle (p=0.034) at initial presentation were found to be significant factors affecting the progression of hallux valgus deformity. Change in the HVA during follow-up was significantly correlated with changes in the IMA (r=0.423; p=0.001) and DMAA (r=0.541; p<0.001). Conclusion: Special attention needs to be given to patients with pes planovalgus and increased DMAA during follow-up. Change in HVA was significantly correlated with changes in IMA and DMAA. Therefore, progression of hallux valgus deformity is considered to be closely related to the progressive instability of the first tarsometatarsal joint.

scholarly journals Radiographic differences in the concomitant deformities in two types of medial ankle osteoarthritis

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0247816
Author(s):  
Wooyoung Choi ◽  
Chin Youb Chung ◽  
Moon Seok Park ◽  
Sanghoon Lee ◽  
Kyoung Min Lee
Keyword(s):  
Weight Bearing ◽  
Rotation Group ◽  
Ankle Osteoarthritis ◽  
First Metatarsal ◽  
Logistic Analysis ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Varus Angulation ◽  
The Difference ◽  
Displacement Group

Objectives Motion preserving surgeries could be unsuccessful because of underestimation of deformities of the foot and knee in ankle osteoarthritis. This study aimed to investigate the concomitant deformities in medial ankle osteoarthritis and the difference between the two types, varus angulation and medial translation. Methods A retrospective study was conducted using medical records and radiographic data. Patients with medial ankle osteoarthritis that underwent weight-bearing X ray imaging and radiographic measurements including tibial plafond inclination (TPI), tibiotalar tilt angle (TT), lateral talo-first metatarsal angle, naviculo-cuboid overlap, and mechanical tibiofemoral angle (mTFA) were studied. The patients were categorized into two groups, the varus angulation group (TT ≥4°) and medial translation group (TT <4°). The radiographic measurements were compared between the two groups. Results A total of 102 patients (male = 44; female = 58) were included; the mean age was 64.9 years (SD 8.3 years). The varus rotation group (N = 66) showed a significantly smaller lateral talo-first metatarsal angle (p<0.001), naviculo-cuboid overlap (p<0.001), and mTFA (p = 0.019) compared to the medial displacement group (N = 36). The TT showed a significant correlation with lateral talo-first metatarsal angle (r = -0.520, p<0.001), naviculo-cuboid overlap (r = -0.501, p<0.001), and mTFA (r = -0.243, p = 0.014). Lateral talo-first metatarsal angle was found to be the significant factor (p = 0.018) discriminating varus angulation and medial translation types in the binary logistic analysis. Conclusions Varus angulation of the ankle was correlated with knee alignment and foot deformity. Radiographic indices were different between the varus angulation and medial translation groups. The role of concomitant deformities needs to be further investigated in terms of a causal relationship. Surgeons need to pay attention to concomitant deformities in the treatment of medial ankle osteoarthritis.

scholarly journals Relationship between ankle varus moment during gait and radiographic measurements in patients with medial ankle osteoarthritis

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253570
Author(s):  
Ji Hye Choi ◽  
Hee Soo Han ◽  
Young Jin Park ◽  
Seungbum Koo ◽  
Taeyong Lee ◽  
...  
Keyword(s):  
Tilt Angle ◽  
Three Dimensional ◽  
Radiographic Measurement ◽  
Talar Dome ◽  
Ankle Osteoarthritis ◽  
First Metatarsal ◽  
Tibial Plafond ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Varus Angulation

Background Kinetic data obtained during gait can be used to clarify the biomechanical pathogenesis of osteoarthritis of the lower extremity. This study aimed to investigate the difference in ankle varus moment between the varus angulation and medial translation types of medial ankle osteoarthritis, and to identify the radiographic measurements associated with ankle varus moment. Methods Twenty-four consecutive patients [mean age 65.8 (SD) 8.0 years; 9 men and 15 women] with medial ankle osteoarthritis were included. Fourteen and 10 patients had the varus angulation (tibiotalar tilt angle≥3 degrees) and medial translation (tibiotalar tilt angle<3 degrees) types, respectively. All patients underwent three-dimensional gait analysis, and the maximum varus moment of the ankle was recorded. Radiographic measurement included tibial plafond inclination, tibiotalar tilt angle, talar dome inclination, and lateral talo-first metatarsal angle. Comparison between the two types of medial ankle osteoarthritis and the relationship between the maximum ankle varus moment and radiographic measurements were analyzed. Results The mean tibial plafond inclination, tibiotalar tilt angle, talar dome inclination, lateral talo-first metatarsal angle, and maximum ankle varus moment were 6.4 degrees (SD 3.3 degrees), 5.0 degrees (SD 4.6 degrees), 11.4 degrees (SD 5.2 degrees), -6.5 degrees (SD 11.7 degrees), and 0.185 (SD 0.082) Nm/kg, respectively. The varus angulation type showed a greater maximum ankle varus moment than the medial translation type (p = .005). The lateral talo-first metatarsal angle was significantly associated with the maximum ankle varus moment (p = .041) in the multiple regression analysis. Conclusion The varus angulation type of medial ankle osteoarthritis is considered to be more imbalanced biomechanically than the medial displacement type. The lateral talo-first metatarsal angle, being significantly associated with the ankle varus moment, should be considered for correction during motion-preserving surgeries for medial ankle osteoarthritis to restore the biomechanical balance of the ankle.

Effect of Proximal Dome and Distal Chevron Osteotomies on Plantar Pressures and Radiographic and Functional Outcomes in Hallux Valgus Surgery: A Retrospective Analysis

2021 ◽  
Vol 111 (3) ◽  
Author(s):  
Kadir Ilker Yildiz ◽  
Abdulhamit Misir ◽  
Turan Bilge Kizkapan ◽  
Mustafa Cukurlu ◽  
Canan Gonen Aydin
Keyword(s):  
Hallux Valgus ◽  
Inclination Angle ◽  
Plantar Pressure ◽  
Functional Outcomes ◽  
First Metatarsal ◽  
Pressure Point ◽  
Radiographic Outcomes ◽  
Metatarsal Angle ◽  
Dome Osteotomy ◽  
Pressure Changes

Background No detailed comparative studies have been performed regarding plantar pressure changes between proximal dome and distal chevron osteotomies. This study aimed to compare radiographic and plantar pressure changes after distal chevron and proximal dome osteotomies and to investigate the effect of radiographic and plantar pressure changes on clinical outcomes. Methods This study included 26 and 22 patients who underwent distal chevron and proximal dome osteotomies, respectively. Visual analog scale (VAS) and American Orthopaedic Foot & Ankle Society (AOFAS) forefoot scores were used to evaluate pain and functional outcomes. Hallux valgus angle, intermetatarsal angle, talar–first metatarsal angle, and calcaneal inclination angle were measured in the evaluation of radiographic outcomes. Preoperative and postoperative plantar pressure changes were evaluated. Results There were no statistically significant differences between the two groups in age, body mass index, or AOFAS forefoot and VAS scores. In the proximal dome group, the pressure measurement showed significant lateralization of the maximal anterior pressure point in the forefoot (P &lt; .001). In addition, the postoperative calcaneal inclination angle was significantly lower (P = .004) and the talar–first metatarsal angle was significantly higher (P &lt; .001) in the proximal dome group. Postoperative transfer metatarsalgia was observed in one patient (3.8%) in the distal chevron group and five (22.7%) in the proximal dome group (P &lt; .05). Conclusions Proximal dome osteotomy led to more lateralization of the maximum anterior pressure point, decreased calcaneal inclination angle and first metatarsal elevation, and related higher transfer metatarsalgia.

scholarly journals Roentgenographs Study of Cavus Foot Deformity in Friedreich Ataxia Patients: Preliminary Report

1982 ◽  
Vol 9 (2) ◽  
pp. 113-117 ◽  
Author(s):  
P. Allard ◽  
J.P. Sirois ◽  
P.S. Thiry ◽  
G. Geoffroy ◽  
M. Duhaime
Keyword(s):  
Inclination Angle ◽  
Weight Bearing ◽  
Friedreich Ataxia ◽  
Quantitative Description ◽  
Foot Deformity ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Cavus Foot ◽  
Three Stages

SUMMARY:The preliminary results based on a three year retrospective study in cavus foot deformity of forty-four Friedreich ataxia patients regularly seen at the Neuromuscular Disease Clinic of Sainte-Justine Hospital have been presented. An accurate “weight-bearing” foot stereoradiographic technique has been recently developed by our group. Since the follow-up period with this device is not sufficient to provide statistical information, the conventional non-weight bearing technique has been utilized in this study to enable a possible comparison between the radiographs of ambulant and non-ambulant patients. Due to the present technique, the results of this study must be interpreted with caution.For 132 pairs of radiographs, 28 parameters have been analyzed. Four of these, namely the calcaneal inclination angle, the first metatarsal inclination angle, the inferior cortex of calcaneus-first metatarsal angle and the first-fifth metatarsals angle, were of particular interest. From these parameters, a preliminary quantitative description of cavus foot deformity in Friedreich’s ataxia has been attempted. Three stages of evolution have been tentatively identified for this type of neurological disorder.

scholarly journals Dynamic First Tarsometatarsal Instability During Gait Evaluated by Pedobarographic Examination in Patients with Hallux Valgus

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0030
Author(s):  
Byung Jo Min ◽  
Seungbum Koo ◽  
Won-keun Park ◽  
Ki-bum Kwon ◽  
Kyoung Min Lee
Keyword(s):  
Hallux Valgus ◽  
Joint Instability ◽  
Weight Bearing ◽  
Binary Logistic Regression ◽  
Valgus Deformity ◽  
Binary Logistic Regression Analysis ◽  
Tarsometatarsal Joint ◽  
Hallux Valgus Deformity ◽  
Metatarsal Angle ◽  
Radiographic Measurements

Category: Midfoot/Forefoot Introduction/Purpose: This study aimed to investigate the pedobarographic characteristics of tarsometatarsal instability and to identify factors associated with pedobarographic first tarsometatarsal instability in patients with hallux valgus deformity. Methods: Fifty-seven patients (mean age, 59.7 years; standard deviation, 11.4 years; 6 men and 51 women) with a hallux valgus angle (HVA) greater than 15° were included. All patients underwent a pedobarographic examination along with weight-bearing anteroposterior (AP) and lateral foot radiography. Radiographic measurements were compared between the two groups with and without pedobarographic first tarsometatarsal instability. The association between the radiographic and pedobarographic parameters of the first tarsometatarsal instability was analyzed using the chi-square test. Binary logistic regression analysis was performed to identify significant factors affecting pedobarographic first tarsometatarsal instability. Results: HVA (p<0.001), the intermetatarsal angle (p=0.001), and AP talo-first metatarsal angle were significantly different between the pedobarographically stable and unstable tarsometatarsal groups. There was no significant association between radiographic and pedobarographic instabilities of the first tarsometatarsal joint (p=0.924). HVA was found to be the only significant factor affecting pedobarographic tarsometatarsal joint instability (p=0.001). Conclusion: The pedobarographic examination has possible clinical utility in evaluating first tarsometatarsal joint instability in patients with hallux valgus deformity. Patients with greater HVA need to be carefully monitored for the presence of first tarsometatarsal instability, and the necessity of the Lapidus procedure should be considered.

scholarly journals Correction of Severe Flexible Pes Planovalgus Deformity Using Trabecular Metallic Wedges

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002
Author(s):  
Elizabeth McDonald ◽  
Justin Tsai ◽  
Steven Raikin ◽  
Ryan Sutton
Keyword(s):  
Weight Bearing ◽  
Attractive Alternative ◽  
Complication Rates ◽  
Pes Planovalgus ◽  
Lateral Column ◽  
Radiographic Parameters ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Picture Archiving And Communication

Category: Hindfoot, Midfoot/Forefoot Introduction/Purpose: Lateral column lengthening and a medial cuneiform plantarflexion (Cotton) osteotomy are procedures commonly used in the treatment of symptomatic flexible pes planovalgus. Traditionally, structural autograft or allograft have been used for both osteotomies. While union rates for both types of graft have been shown to be comparably high, the use of allograft or autograft each come with their own set of inherent risks and/or potential complications. A trabecular titanium wedge implant provides an attractive alternative that avoids the concerns associated with autograft and allograft use, and has previously been shown in the literature to demonstrate similar union rates. The purpose of this study was to retrospectively review the radiographic outcomes of corrective osteotomies utilizing trabecular metal wedges to address severe flexible pes planovalgus deformity. Methods: 115 feet in 109 patients who were treated with corrective osteotomies using a trabecular titanium wedges performed by one surgeon were retrospectively reviewed. All patients had symptomatic flexible pes planovalgus, mostly secondary to stage IIB posterior tibialis tendon dysfunction. Other diagnoses included pes planovalgus secondary to the adolescent idiopathic flexible subtype, traumatic posterior tibialis tendon rupture, coalition, or an accessory navicular. Preoperative radiographic parameters assessing severity of deformity were recorded and compared to the postoperative measurements taken at the time of most recent follow up visit to assess for correction. The radiographic measurements included the (1) AP talo-1st metatarsal angle (2) Lateral talo-1st metatarsal angle (3) Calcaneal pitch (4) Lateral talo-calcaneal angle and (5) Talonavicular uncoverage angle. All angles were measured off standard weight-bearing radiographs by one author using our institution’s picture archiving and communication system (PACS) software. All complications were also recorded. Results: At an average follow up time of 40 weeks, there were statistically significant corrective changes in the AP-talo-1st metatarsal angle (-12.56), lateral talo-1st metatarsal angle (+14.15), calcaneal pitch (+5.23), lateral talo-calcaneal angle (-3.87) and talonavicular uncoverage angle (-17.76). There were 3 nonunions (2.6%) confirmed by CT, 2 of which were eventually revised. There were a total of 9 complications (7.8%). Other than the nonunion revisions, none of these complications required a return to the operating room. There were no cases of collapse or loss of correction at the time of followup, as compared to the initial post-operative radiographs. Conclusion: In our study population corrective osteotomies using a trabecular titanium wedge was effective in improving radiographic parameters associated with flexible pes planovalgus deformity. The nonunion and overall complication rates using a trabecular titanium wedge were shown to be comparable or superior to what has previously been reported in the literature using allograft or autograft.

scholarly journals The Role of Cavovarus Deformity in the Pathogenesis of Peroneal Tendon Tears

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0009
Author(s):  
Shannon F. Alejandro ◽  
Akira Taniguchi ◽  
Justin M. Kane ◽  
Samuel E. Ford ◽  
Daniel J. Scott ◽  
...  
Keyword(s):  
Matched Control ◽  
Objective Measures ◽  
Control Group ◽  
Peroneal Tendon ◽  
Significance Level ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Radiographic Measurements ◽  
Cavus Foot ◽  
Tendon Tears

Category: Other; Sports Introduction/Purpose: While it is a commonly accepted principle peroneal tendon (PT) tears are associated with cavovarus deformity, this is the first study that both quantifies deformity in patients with surgically proven tears using sophisticated and reproducible methods to compare radiographic measurements to a matched control group. Understanding of the anatomy and mechanism of injury affecting the PTs has led to greater recognition of PT tears as an important cause of lateral sided foot and ankle pain. The literature reports a presumed correlation between the cavus foot and PT tears. Little data exist quantifying the correlation between PT tears and the alignment of the foot. We hypothesize the cavovarus foot applies stress over the lateral border of the foot leading to degenerative changes in PTs. Methods: A cohort of 252 consecutive patients operatively treated for peroneal tendon tears (PT) were compared to an age- and sex- matched control (C) group of 104 outpatients treated for isolated forefoot problems. Calcaneal pitch, calcaneal - first metatarsal, talometatarsal, and talocalcaneal angles were compared on standing lateral radiographs. Talometatarsal and talocalcaneal angles, and talonavicular coverage, were compared on standing anteroposterior radiographs. Published radiographic criteria were used to determine cavovarus. ANOVA analysis detected statistically significant differences between patients and controls and a subsequent Tukey-Kramer test compared the control group with each type of PT tear. An a prioripower analysis was performed to calculate the minimum sample size in each cohort to detect a 90% effect size for a significance level of p<0.05. Results: Radiographic cavovarus was found in 9.4% (74/252) of PT group, and 6.7% (7/104) in controls. On lateral radiographs a significant greater calcaneal pitch (p=0.0001), and significant smaller calcaneal-first metatarsal angle (p=0.0084) was noted with PT tears (p=0.0001). On anteroposterior radiographs a significant smaller talometatarsal angle (p=0.0001) and talonavicular coverage (p=0.0001) were noted in PT tears. AP talocalcaneal and lateral talometatarsal and talocalcaneal angles were not correlated with PT tears. Patients treated for PT tears, isolated peroneus brevis tears (PB) accounted for 67.9% (171/252), isolated peroneus longus (PL) tendon tears were 7.5% (19/252), PB and PL tears accounted for 17.5% (44/252). A smaller talometatarsal angle on the AP was associated with PL (0.0098) and combined PB and PL tears (<0.0001) but not PB tears alone (0.1162). Conclusion: The correlation between cavovarus and peroneal pathology in the literature is highly anecdotal. Few studies report objective measures. This is the first study to our knowledge comparing nature and severity of cavovarus according to location of peroneal tear. This study proves and quantifies objective measures of cavovarus that correlate with peroneal tendon tears, when compared to a cohort of matched controls.

Effect of Unilateral Accessory Navicular Bone on Radiologic Parameters of Foot

2020 ◽  
pp. 107110072096482
Author(s):  
Mustafa Kara ◽  
Serkan Bayram
Keyword(s):  
Navicular Bone ◽  
Level Of Evidence ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Asymptomatic Patients ◽  
Accessory Navicular ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Background: This study aimed to compare the radiologic parameters of both feet in patients with unilateral accessory navicular bone (ANB) and evaluate the differences from one another. Methods: Forty-one patients with unilateral ANB volunteered to participate in this study from August 2019 to January 2020. Patient data, including age, sex, body mass index (BMI), type of ANB, and presence of symptoms were obtained. Group 1 comprised 23 patients with asymptomatic unilateral ANB, and group 2 comprised 18 patients with symptomatic unilateral ANB. Seven radiologic parameters were evaluated assessing hindfoot, midfoot, and forefoot alignment—calcaneal pitch angle, talocalcaneal angle, tibiocalcaneal angle, naviculocuboid overlap (NCO), talonavicular coverage angle (TNCA), anteroposterior talo–first metatarsal angle, and lateral talo–first metatarsal angle. Results: The mean age of patients was 40.1 years in group 1 and 42.6 years in group 2. Mean BMI was 25.2 in group 1 and 26.6 in group 2. No significant differences were noted in the radiologic parameters between the ANB and contralateral sides in all patients. The radiologic parameters of both feet in symptomatic and asymptomatic patients were not significantly different. No significant differences were noted between the affected sides of type 1 and 2 ANB and contralateral sides in terms of the radiologic parameters. BMI was significantly correlated with NCO and TNCA. Conclusion: This study demonstrated that the presence of an accessory navicular bone did not affect radiologic parameters of the foot. Radiologic parameters of both feet in symptomatic patients were not significantly different. Level of Evidence: Level III, diagnostic, comparative study.

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