-
Cureus Apr 2024Hallux valgus (HV) is a relatively frequent disease caused by a complicated structural malformation of the primary ray. The bunion or middle projection generated by the... (Review)
Review
Hallux valgus (HV) is a relatively frequent disease caused by a complicated structural malformation of the primary ray. The bunion or middle projection generated by the hallux's lateral displacement and pronation is merely one element of the three-dimensional abnormality. HV may trigger severe discomfort and affect joint kinematics. The specific kinematic cause is still unknown. Female age, gender, restrictive footwear, and heritage are risk indicators. HV frequently coexists along metatarsal adducts, equines contracture, hammertoe imperfection, and pes planus. HV is a frequent foot ailment with multiple, complicated, unknown etiology and course. HV has a preference for females. It is an ongoing condition for which there is no known treatment to reduce or prevent improvement. Fibrodysplasia ossificans progressiva (FOP) is distinguished by hereditary symmetrical HV deformities or symptoms that begin heterotopic calcification that is either idiopathic or caused by trauma, such as subcutaneous immunizations. Localized heterotopic calcification may be preceded by aggravating, recurring soft-tissue enlargements (flare-ups). Heterotopic calcification may happen anywhere; however, it most commonly impacts locations near the axial bone structure during the early/mild phases until advancing to the appendicular skeleton. As an effect of calcification affecting the flexibility of the joints, it might cause limitations in motion. The initial line of therapy focuses on non-surgical methods including night splinting, orthotics, and larger shoes. The next suggested line of action is surgical intervention if conservative therapy fails. Patients have good postoperative tolerance, and bone union often happens six to seven weeks after surgery. Stretching exercises help to restore function by extending shortened soft tissue and restoring range of motion (ROM). The goal of joint mobilization, a form of manual treatment method, is to extend the ligament, the soft tissue surrounding the limited joint, and the restricting joint capsule by applying modest amplitude passive movement to the joint components.
PubMed: 38779237
DOI: 10.7759/cureus.58750 -
Journal of Foot and Ankle Research Oct 2023This prospective study aimed to test the reliability and validity of hallux valgus angle (HVA) measurement on smartphone digital photographs compared with the standard...
BACKGROUND
This prospective study aimed to test the reliability and validity of hallux valgus angle (HVA) measurement on smartphone digital photographs compared with the standard radiographic evaluation.
METHODS
Twenty Seven female patients (45 feet) with forefoot deformity were evaluated with weight-bearing anteroposterior foot radiographs and smartphone photographs. Radiographic hallux valgus angle (rHVA) was measured on digital radiographs. Two different photographic HVA measurement methods were used. In the first, the longitudinal axes of the first metatarsal and proximal phalanx were determined, and the angle between these axes was measured (pHVA), similar to the radiographic method. In the other method, the angle of the margo medialis pedis was measured on the photograph (pMMP). Two independent observers performed all measurements twice on two different occasions. Reliability analysis was performed using the interclass correlation coefficient. Agreement between the measurements was tested using Bland-Altman analysis.
RESULTS
The repeated rHVA, pHVA and pMMP measurements showed excellent intra and inter-observer reliability, with ICC values above 0.900. The mean rHVA, pHVA, and pMMP were statistically similar (p:0.929, 27.03°±8.7°, 27.11°±8.8° and 26.5°±9.0° respectively). The mean difference between the rHVA and pHVA was - 0.07°±5.1° (range, --9.67 to 9.56°), and the mean difference between the rHVA and pMMP was 0.53°±4.4° (range, -9.76° to 8.22°). There was a strong positive correlation between both photographic methods and radiographic measurements (rho = 0.809, p = 0.001 and rho = 0.872, p = 0.001). In the Bland Altman plot, the upper and lower LOAs (95%CI) ranged from - 10.11° to 9.93° for rHVA and pHVA, and from - 8.26° to 9.33° for rHVA and pMMP. Linear regression analysis showed a proportional bias for pHVA but not for the pMMP (p:0.010 versus p:0.633, respectively). The range of the mean difference (prediction interval) between the pMMP and rHVA was 17.59° and 20° for pHVA and rHVA. Simple linear regression showed that the rHVA was predicted by the following equation: rHVA = 4.73 + 0.84 × pMMP (r2 = 0.761, p < 0.001).
CONCLUSIONS
Although measuring HVA through smartphone photographs is reliable, it is not a valid prediction method.
LEVEL OF EVIDENCE
Level II, diagnostic assessment.
Topics: Humans; Female; Hallux Valgus; Smartphone; Reproducibility of Results; Prospective Studies; Foot; Metatarsal Bones
PubMed: 37840128
DOI: 10.1186/s13047-023-00670-8 -
Journal of Pain Research 2022To investigate the risk factors for hallux valgus complicated with pain under the second metatarsal and construct an effective model and method for predicting hallux...
OBJECTIVE
To investigate the risk factors for hallux valgus complicated with pain under the second metatarsal and construct an effective model and method for predicting hallux valgus complicated with pain under the second metatarsal based on risk factors.
METHODS
A total of 545 patients with hallux valgus who were admitted to our hospital were divided randomly into a training set and a validation set. The demographic characteristics, imaging indices and gait test indices of the patients were collected. The risk factors were identified by univariate and multivariate logistic regression analyses. A risk prediction model for hallux valgus with pain under the second metatarsal was established, and the area under the curve (AUC) of the receiver operating characteristic and a decision curve analysis were used for verification and identification. The value of the model was tested in the verification group.
RESULTS
Second metatarsal length, second metatarsal peak pressure, hallux valgus angle (HVA), intermetatarsal angle 1-2 (IMA1-2) and weight were the risk factors for hallux valgus complicated with pain under the second metatarsal. Based on the weighting of these seven risk factors, a prediction model was established. The AUC of the prediction model was 0.84 (95% confidence interval [CI]: 0.802~0.898, < 0.05), and the results of a Hosmer-Lemeshow test showed a good degree of calibration ( = 10.62, > 0.05). The internal validation of the AUC was 0.83 (95% CI: 0.737-0.885, < 0.05). The model had obvious net benefits when the threshold probability was 10%-70%.
CONCLUSION
Second metatarsal length, second metatarsal peak pressure, HVA, IMA1-2 and weight were the risk factors for hallux valgus combined with second metatarsal pain. The risk prediction model for hallux valgus complicated with pain under the second metatarsal based on these seven variables was proven effective.
LEVEL OF EVIDENCE
Level III, retrospective comparative study.
PubMed: 36394054
DOI: 10.2147/JPR.S386315 -
Foot & Ankle Orthopaedics Jan 2020Hallux valgus can alter load bearing in the foot leading to abnormal forces on the second toe. The purpose of this study was to determine demographic and radiographic...
BACKGROUND
Hallux valgus can alter load bearing in the foot leading to abnormal forces on the second toe. The purpose of this study was to determine demographic and radiographic factors associated with second ray hammertoes in hallux valgus using 3-dimensional weightbearing CT scans.
METHODS
Seventy-one patients who underwent a modified Lapidus procedure for hallux valgus with preoperative weightbearing CT scans were separated into 2 groups: (1) hallux valgus only (47 feet) and (2) hallux valgus with second ray hammertoe (29 feet). Preoperative age, body mass index (BMI), sex, hallux valgus angle (HVA), intermetatarsal angle (IMA), absolute and effective metatarsal (MT) lengths, ratios between metatarsal lengths, Meary angle, metatarsus adductus angle (MAA), and pronation were measured. Mean values of continuous variables were compared and both simple and multivariable logistic regression models were used to evaluate associations between variables and hammertoe occurrence.
RESULTS
Patients in the hammertoe group were found to be significantly older and have higher BMIs, HVAs, effective second MT lengths, IMAs, and more apex plantar Meary angles (all < .05). The multivariable analysis demonstrated that a higher IMA and a more apex plantar Meary angle were the only significant predictors of second ray hammertoe risk ( = .03 and = .01, respectively) once corrected for age and BMI.
CONCLUSION
Significant associations were found between older age, higher BMI, and more severe deformity and the occurrence of hammertoe in hallux valgus patients. These results may help clinicians counsel hallux valgus patients about the risk of developing an advanced hammertoe deformity.
LEVEL OF EVIDENCE
Level III, retrospective comparative series.
PubMed: 35097369
DOI: 10.1177/2473011420909088 -
Journal of Clinical Orthopaedics and... Jul 2022Hallux Valgus (HV) is a complex deformity involving the first ray of the forefoot and a common cause of forefoot pain. Several radiological measurements such as Hallux...
INTRODUCTION
Hallux Valgus (HV) is a complex deformity involving the first ray of the forefoot and a common cause of forefoot pain. Several radiological measurements such as Hallux Valgus Angle (HVA), First Metatarsophalangeal Angle (IMA) and Distal metatarsal articular angle (DMAA) exist to calculate the severity of HV and direct patient management. However, these are angular measurements are prone to error with variable intra- and inter-observer reliability.
PURPOSE
To describe a new radiological linear hallux valgus offset (LHVO) to measure HV deformity.
PATIENT AND METHODS
We performed a retrospective cohort study looking at Antero-posterior, weight-bearing foot radiographs of 100 consecutive patients with forefoot pain referred to our foot and ankle clinic. Demographic details, clinical indication, HVA (hallux valgus angle) and LHVO were measured for each patient and data were analyzed using the student t-test. Intraclass Correlation Coefficient (ICC) analysis was evaluated to assess the intra-class reliability between observers.
RESULTS
There was a female predominance of approximately 2:1, with 51.3 years (range 13-86 years). There was a statistically significant difference of LHVO between normal and hallux valgus cohorts with a p-value of 0.0001. The LHVO gave moderate intra-observer and inter-observer reliability on ICC analysis of 0.7.
CONCLUSION
The LHVO can be an additional measure of assessing severity of hallux valgus. In contrary to the traditional angular measurements, this linear measure is easier to calculate and reproducible on plain, weight bearing radiographs. LHVO measurement has shown a moderate inter-observer reliability in the study to complement traditional radiological evaluation of hallux valgus alignment.
PubMed: 35619938
DOI: 10.1016/j.jcot.2022.101898 -
Revista Brasileira de Ortopedia Aug 2021To present the clinical and radiographic results of hallux valgus surgical correction using four percutaneous techniques, chosen according to a predefined...
To present the clinical and radiographic results of hallux valgus surgical correction using four percutaneous techniques, chosen according to a predefined radiographic classification. We prospectively evaluated 112 feet in 72 patients with hallux valgus operated over the course of 1 year. Percutaneous distal soft tissue release (DSTR) and the Akin procedure (DSTR-Akin) were performed in mild cases. In mild to moderate hallux valgus with distal metatarsal joint angle > 10°, we added the Reverdin-Isham (RI) osteotomy. In moderate cases with joint incongruity, we performed the percutaneous chevron (PCH). Finally, a Ludloff-like percutaneous proximal osteotomy fixed (PPOF) with a screw was proposed in severe cases with an intermetatarsal angle (IMA) > 17°. According to these criteria, 26 DSTRs-Akin, 36 PCHs, 35 RIs, and 15 PPOFs were performed. The mean follow-up was of 17.2 months (range: 12 to 36 months). The mean age at operation was 58.8 years (range: 17 to 83 years), and 89% of the patients were female. The mean preoperative hallux valgus angle (HVA) and the IMA decreased from 21° to 10.2° and from 11.2° to 10.3° respectively in the DSTR-Akin. In the RI, the mean HVA decreased from 26.6° to 13.7°, and the IMA, from 11.2° to 10.3°; in the PCH, the mean HVA decreased from 31° to 14.5°, and the IMA decreased 14.9° to 10.7°; as for the PPOF, the mean HVA decreased from 39.2° to 17.7°, and the IMA, from 11.8° to 6.8°. The average ankle and hindfoot score of the American Orthopaedic Foot and Ankle Society (AOFAS) increased from 49.2 to 88.6. The rate of complications was of 11%. Our treatment protocol does not differ much from the classic ones, with similar results as well. We have as advantages less aggression to soft tissues and better cosmetic results. Level of Evidence: level IV, prospective case series.
PubMed: 34483396
DOI: 10.1055/s-0040-1721367 -
International Journal of Environmental... Jul 2022Hallux valgus is a common foot and ankle disease, for which numerous surgical procedures were introduced. So, understanding the mechanism of deformity reduction is...
Hallux valgus is a common foot and ankle disease, for which numerous surgical procedures were introduced. So, understanding the mechanism of deformity reduction is important to select the proper method. Intermetatarsal angle (IMA) determines the severity of hallux valgus, which is influenced by the translated metatarsal head and the reduction of the first tarsometatarsal joint. We hypothesized that both of the mechanisms simultaneously contribute to the correction of IMA. Hallux valgus (70 feet) operated with a Scarf osteotomy with the Akin procedure were reviewed. Hallux valgus angle (HVA), IMA (mechanical and anatomical), hallux valgus interphalangeal angle (HVIP), distal metatarsal articular angle (DMAA), and sesamoid position were checked. The ratio of contributions to the IMA changes were calculated and compared. When the individual contributions by metatarsal head translation and first tarsometatarsal joint reduction were compared, metatarsal head translation contributed by 82%, whereas first tarsometatarsal joint reduction contributed by 18%. Both were responsible for mechanical IMA correction. However, IMA change by metatarsal head translation was a major correction mechanism compared to anatomical IMA change by first tarsometatarsal joint reduction.
Topics: Hallux Valgus; Humans; Hyperplasia; Metatarsal Bones; Metatarsophalangeal Joint; Osteotomy; Radiography; Retrospective Studies; Treatment Outcome
PubMed: 35886095
DOI: 10.3390/ijerph19148243 -
The Archives of Bone and Joint Surgery Mar 2021Several procedures and types of osteotomies have been described for hallux valgus (HV) correction. Percutaneous techniques may lead to an early regain of function...
BACKGROUND
Several procedures and types of osteotomies have been described for hallux valgus (HV) correction. Percutaneous techniques may lead to an early regain of function reducing morbidity and recovery time. In this study, we aimed to evaluate the clinical and radiographic outcomes of percutaneous hallux valgus (HV) correction.
METHODS
One hundred and twenty-four feet treated with the percutaneous technique between May 2011 and December 2015 were included in our study. All patients underwent resection of the medial metatarsal exostosis, complete first metatarsal distal osteotomy, adductor hallucis tendon release and Akin osteotomy of the proximal phalanx. Pre- and postoperative X-rays were clinically assessed.
RESULTS
The mean hallux valgus angle (HVA) and the intermetatarsal angle (IMA) decreased significantly from the preoperative assessment to the final follow-up. The AOFAS score improved from a mean preoperative value of 70.2 to 93.8 at the final follow-up.
CONCLUSION
Percutaneous complete distal osteotomy in hallux valgus correction is a safe, reliable and effective procedure for the correction of symptomatic mild hallux valgus. Nevertheless, it requires appropriate surgical experience and patient aftercare in order to achieve the best result.
PubMed: 34026939
DOI: 10.22038/abjs.2020.47336.2319 -
Orthopaedic Surgery Nov 2023To design appropriate orthosis for hallux valgus, a difficult foot condition that affects a quarter of the body's bones, we need to clarify the numerical biomechanical...
OBJECTIVE
To design appropriate orthosis for hallux valgus, a difficult foot condition that affects a quarter of the body's bones, we need to clarify the numerical biomechanical features, which have not been established in previous biomechanical studies. Therefore, we constructed a finite element model of the bunion foot to investigate the orthopaedic force compensation mechanism.
METHODS
A patient with moderate hallux valgus was recruited. CT imaging data in DICOM format were extracted for three-dimensional foot model reconstruction. In conjunction with the need for rapid design of bunion orthosis, a metatarsal force application sizing method based on an orthogonal test design was investigated. The orthogonal test design was used to obtain the hallux valgus angle (HVA) and the inter metatarsal angle (IMA) data for different force combinations. Based on the extreme difference analysis and analysis of variance of the test results, the influence of different force combinations on the bunion angle was quickly determined.
RESULTS
The results showed that the stress concentration occurred mainly in the first metatarsal bone. The distribution trend was in the medial and lateral middle of the bone and gradually decreased to the dorsal base of the bone body. The greatest stress occurs in the cartilage between the phalanges and metatarsals. In 25 groups of simulation experiments, HVA was reduced from 27.7° to 13°, and IMA was reduced from 12.5° to 7.3°.
CONCLUSION
Applying detailed orthopaedic force collocation to the first metatarsal column can effectively restore the mechanics and kinematics of hallux valgus, and provide a reference for the treatment of bunion valgus and the design of orthopaedic devices.
Topics: Humans; Hallux Valgus; Finite Element Analysis; Osteotomy; Bunion; Orthotic Devices; Treatment Outcome
PubMed: 37667965
DOI: 10.1111/os.13862 -
Indian Journal of Orthopaedics Jul 2021Few previous studies focused on plantar loading patterns in HV patients with metatarsalgia. Are there any differences in plantar pressure measurements in women with HV...
BACKGROUND
Few previous studies focused on plantar loading patterns in HV patients with metatarsalgia. Are there any differences in plantar pressure measurements in women with HV with and without metatarsalgia?
METHODS
A prospective matched-cohort study was designed to analyze plantar pressure measurements in women with HV with and without metatarsalgia from January 2017 to December 2019. The inclusion criteria were age over 18 years old, women, diagnosis of HV with metatarsalgia. Control group had the same inclusion criteria, except metatarsalgia. Patient-reported outcomes scores included American Orthopedic Foot and Ankle Society Score (AOFAS), and Visual Analog Scale (VAS). Radiographic data were obtained according to the guidelines of the AOFAS Committee on Angular Measurements. Plantar pressure measurements were performed using a platform.
RESULTS
Forty-seven patients met the inclusion criteria. An age-, BMI-, and hallux valgus angle-matched cohort of 47 patients were also selected. There were no statistically significant differences in demographic data and radiographic assessment. HV with metatarsalgia group showed greater values in peak and mean force, peak and mean pressure, and pressure-time integral under toes and metatarsal heads. These differences reached statistically significant in mean force ( = 0.009) and peak force ( = 0.003) under T1; mean pressure ( = 0.01) and peak pressure ( = 0.04) under T1; and mean force ( = 0.003) under MH1. The binary logistic regression analysis showed mean force under T1 as the most associated plantar pressure measurement with the presence of metatarsalgia. C-statistic was 0.66. Mean force > 35 N had a 70% of sensitivity and a 57% of specificity as a cut-off value for the presence of metatarsalgia.
CONCLUSION
HV patients with metatarsalgia had greater values in plantar pressure measurements. Mean force under T1 could be used as a plantar pressure measurement to predict metatarsalgia.
PubMed: 34306558
DOI: 10.1007/s43465-021-00416-3