Operative Treatment for Hallux Valgus With Moderate to Severe Metatarsus Adductus

2019 ◽  
Vol 40 (6) ◽  
pp. 641-647 ◽  
Author(s):  
Hiroaki Shima ◽  
Ryuzo Okuda ◽  
Toshito Yasuda ◽  
Katsunori Mori ◽  
Momoko Kizawa ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Scale Score ◽  
Operative Treatment ◽  
Weight Bearing ◽  
Case Series ◽  
Limited Information ◽  
Significant Correction ◽  
Metatarsus Adductus ◽  
The Mean

Background: Operative treatment is indicated for patients who have symptomatic hallux valgus (HV) with moderate to severe metatarsus adductus (MA). However, there is limited information available on the operative procedures and outcomes for the treatment of HV with MA. We aimed to investigate the average 10-year follow-up clinical and radiologic outcomes. Methods: Seventeen patients (21 feet, average age: 60.1 years) with symptomatic HV with moderate to severe MA were operatively treated. Mean postoperative follow-up duration was 114.4 (24-246) months. All feet had metatarsus adductus angle ≥20 degrees on dorsoplantar weight-bearing radiograph. The procedure included a proximal crescentic osteotomy of the first metatarsal and abduction osteotomy of the proximal third of the second and third metatarsals. Results: The mean American Orthopaedic Foot & Ankle Society scale score improved significantly postoperatively ( P < .001). The mean postoperative visual analog scale score (17 feet) was 2.0 (0-6). Preoperative metatarsalgia was severe in 2 feet, moderate in 17, and mild in 2. At the most recent follow-up evaluation, 11 feet had no pain, 9 had mild pain, and 1 had moderate pain. The mean hallux valgus angle, intermetatarsal angle, and metatarsus adductus angle significantly decreased postoperatively ( P < .001 for all). Recurrence of HV (HV angle ≥ 20 degrees) was observed in 4 feet. Conclusion: The clinical and radiologic results indicated that our novel operative treatment for HV with moderate to severe MA can achieve significant correction of HV with MA deformities and significant improvement in pain and function. Level of Evidence: Level IV, retrospective case series.

Functional and Radiographic Outcomes of Minimally Invasive Intramedullary Nail Device (MIIND) for Moderate to Severe Hallux Valgus

2020 ◽  
pp. 107110072096967
Author(s):  
Carlo Biz ◽  
Alberto Crimì ◽  
Ilaria Fantoni ◽  
Jacopo Tagliapietra ◽  
Pietro Ruggieri
Keyword(s):  
Hallux Valgus ◽  
Case Series ◽  
Radiographic Outcomes ◽  
Case Series Study ◽  
Significant Correction ◽  
The Mean ◽  
Series Study ◽  
Severe Hallux Valgus

Background: This study was aimed at assessing clinical and radiographic outcomes of the Minimally Invasive Intramedullary Nail Device (MIIND) to correct moderate to severe hallux valgus (HV) and the long-term persistence of its effects. Methods: This case series study involved 100 patients, 84 women and 16 men (mean age, 59 years), who underwent the MIIND procedure with a mean follow-up of 97 months. Assessment was performed preoperatively, postoperatively, at 6 and 12 months, and at last follow-up. Clinical outcomes were evaluated with American Orthopaedic Foot & Ankle Society (AOFAS) scores, visual analog scale (VAS), and patient satisfaction. Intermetatarsal angle (IMA), metatarsophalangeal hallux valgus angle (HVA), distal metatarsal articular angle (DMAA), and tibial sesamoid position were assessed. Statistical analysis was performed. Results: The mean AOFAS score improved from 57.9 to 90.5 points, VAS scale was 1.5 ± 2.0, and patients’ satisfaction was 8.7 ± 1.4. The mean correction of the HVA and IMA showed a significant correction; however, the effect of time was not statistically significant on DMAA. Sex ( P = .047), severity ( P = .050), associated procedures ( P = .000), and preoperative angle ( P = .000) showed significant association with HVA correction and its persistence over time. Age was not statistically significant. Complications were 9 cases of superficial wound infection and 6 recurrences. Conclusions: The MIIND technique proved a viable procedure to correct moderate to severe HV with a low rate of complications and recurrence, producing significant correction of most radiographic parameters assessed and their persistence, even at long term. Level of Evidence: Level IV, case series study.

scholarly journals Surgical treatment of hallux valgus using a modified Reverdin-Isham technique

2021 ◽  
Vol 15 (1) ◽  
pp. 49-53
Author(s):  
Luiz Lara ◽  
Lúcio Torres Filho ◽  
Gabriel Cervone ◽  
Juan Grajales ◽  
Glaucia Bordignon ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Hallux Valgus ◽  
Case Series ◽  
Metatarsal Head ◽  
Level Of Evidence ◽  
Valgus Angle ◽  
Significant Correction ◽  
The Mean ◽  
American Orthopaedic

Objective: To evaluate the postoperative results of patients who underwent surgical treatment of hallux valgus with a modified Reverdin-Isham (RI) technique and to compare the achieved correction with that reported by studies using the original technique. Methods: This is a retrospective study with patients with mild to moderate hallux valgus who underwent surgery from June 2010 to July 2019. All patients were operated using the modified RI technique. Data were collected through the American Orthopaedic Foot and Ankle Society (AOFAS) questionnaire, in addition to pre and postoperative radiographic studies of the intermetatarsal angle (IMA), the hallux valgus angle (HVA), and the distal metatarsal articular angle (DMAA). Results: The mean postoperative follow-up was 30.1 months, and the mean age of patients was 56.4 years. The median AOFAS score in the postoperative period was increased by 56 points. The mean HVA was reduced in 16.5°, the mean IMA was reduced in 4.3°, and the mean DMAA was reduced in 10°. There were no cases of displacement or deviation of the first metatarsal head during the postoperative follow-up. Conclusion: The modified RI technique provided considerable stability to the osteotomy, in addition to a significant correction of the measured angles and an improvement in AOFAS scores, demonstrating itself as an effective technique for correcting mild to moderate hallux valgus. Level of Evidence IV, Therapeutic Studies, Case Series.

Loss of Correction After Chevron Osteotomy for Hallux Valgus as a Function of Preoperative Deformity

2018 ◽  
Vol 40 (3) ◽  
pp. 287-296 ◽  
Author(s):  
Gerhard Kaufmann ◽  
Stefanie Sinz ◽  
Johannes M. Giesinger ◽  
Matthias Braito ◽  
Rainer Biedermann ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Case Series ◽  
X Rays ◽  
Retrospective Case ◽  
Level Of Evidence ◽  
Loss Of Correction ◽  
Chevron Osteotomy ◽  
Significant Correction ◽  
Preoperative Deformity

Background: Recurrence is relatively common after surgical correction of hallux valgus. Multiple factors are discussed that could have an influence in the loss of correction. The aim of this study was to determine preoperative radiological factors with an influence on loss of correction after distal chevron osteotomy for hallux valgus. Methods: Five hundred twenty-four patients who underwent the correction of a hallux valgus by means of distal chevron osteotomy at our institution between 2002 and 2012 were included. We assessed weightbearing x-rays at 4 time points: preoperatively, postoperatively, and after 6 weeks and 3 months. We investigated the intermetatarsal angle (IMA), the hallux valgus angle (HVA), the distal metatarsal articular angle (DMAA), joint congruity, and the position of the sesamoids. Results: At all points of the survey, significant correction of the IMA and HVA was detected. The IMA improved from 12.9 (± 2.8) to 4.5 (± 2.4) degrees and the HVA from 27.5 (± 6.9) to 9.1 (± 5.3) degrees. Loss of correction was found in both HVA and IMA during follow-up with a mean of 4.5 and 1.9 degrees, respectively. Loss of correction showed a linear correlation with preoperative IMA and HVA, and a correlation between preoperative DMAA and sesamoid position. Conclusion: The chevron osteotomy showed significant correction for HVA, IMA, and DMAA. Preoperative deformity, in terms of IMA, HVA, DMAA, and sesamoid position, correlated with the loss of correction and could be assessed preoperatively for HVA and IMA. Loss of correction at 3 months persisted during the follow-up period. Level of Evidence: Level IV, retrospective case series.

scholarly journals Radiographic Outcomes after Fixation of Distal Metatarsal Osteotomy for Hallux Valgus Using a Tension Band Construct

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0042
Author(s):  
Alexander Volpi ◽  
Robert Zbeda ◽  
Christopher Katchis ◽  
Lon Weiner ◽  
Stuart Katchis
Keyword(s):  
Hallux Valgus ◽  
Postoperative Period ◽  
Weight Bearing ◽  
Line Tension ◽  
Tension Band ◽  
Metatarsal Osteotomy ◽  
First Metatarsal ◽  
Distal Metatarsal Osteotomy ◽  
The Mean

Category: Bunion Introduction/Purpose: Hallux valgus is a common deformity of the forefoot. There are over 130 procedures described to correct hallux valgus. Classically, the treatment of mild to moderate hallux valgus is with a distal metatarsal osteotomy. A variety of fixation techniques have been described for use with this osteotomy most of which require partial or non-weight bearing until the osteotomy is healed. Tension Band fixation is a well-known principle in orthopedic surgery. The goal of the present study is to radiographically assess the maintenance of distal first metatarsal osteotomy fixation using a novel tension band device (Re+Line tension band bunion plate system, Nextremity Solutions) with immediate post-operative weight-bearing. Methods: The patient database for one surgeon was retrospectively reviewed for patients that underwent hallux valgus correction with the Re+Line tension band device between 2014 and 2017. Postoperative protocol included a soft dressing, firm surgical shoe, and weight-bearing as tolerated with a cane. Patients were excluded if fixation was achieved with something other than a tension band construct. Radiographs were obtained and reviewed retrospectively by 3 authors. Pre and postoperative hallux valgus (HVA) and intermetatarsal angles (IMA) were measured as described previously in the literature, and the changes in correction compared. Maintenance of correction and hardware integrity were assessed at final follow-up after weight bearing as tolerated in a surgical shoe in the postoperative period. Statistical analysis was performed using a Wilcoxon signed-rank test for the changes in HVA and IMA. Results: There was a total of 72 patients and 76 toes that underwent hallux valgus correction with a tension band construct, at a mean follow-up of 4.36 months. 68 of 72 patients were female. The average age was 60.8 years old. The mean preoperative HVA was 27.1 degrees. The mean postoperative HVA was 6.14 degrees, with a mean correction of 20.22 degrees (p<0.001). The mean preoperative IMA was 14.14 degrees. The mean postoperative IMA was 6.10 degrees, with a mean correction of 7.98 degrees (p<0.001). There was loss of reduction found in 6 of 76 toes (7.89%).There were zero cases of hardware failure. All osteotomies healed at final follow-up. Conclusion: This study shows successful radiographic outcome after hallux valgus correction using a tension band construct and allowing immediate full weight-bearing in a surgical shoe in the postoperative period. Significant deformity correction was achieved and maintained and all osteotomies healed. The Re+Line tension band bunion correction system can be safely used as a successful option to fix distal first metatarsal osteotomies, while allowing patients to fully weight bear in a surgical shoe postoperatively and potentially return to activities faster than when using traditional fixation methods. Future studies are needed to assess functional outcomes and patient satisfaction with this novel technique.

scholarly journals Radiological Outcomes of Third Generation Minimally Invasive Chevron Akin Osteotomies (MICA) for Hallux Valgus

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0032
Author(s):  
Thomas L. Lewis ◽  
Robbie Ray; David Gordon
Keyword(s):  
Minimally Invasive ◽  
Hallux Valgus ◽  
Weight Bearing ◽  
Case Series ◽  
Deformity Correction ◽  
Third Generation ◽  
Radiographic Measurements ◽  
Significant Difference ◽  
Patient Reported ◽  
The Mean

Category: Bunion Introduction/Purpose: Minimally invasive surgery for hallux valgus has significantly increased in popularity recently due to smaller incisions, reduced soft tissue trauma, and the ability to achieve large deformity corrections compared to traditional treatments. This study aimed to investigate the radiological outcomes and degree of deformity correction of the intermetatarsal angle (IMA) and the hallux valgus angle (HVA) following third generation (using screw fixation) Minimally Invasive Chevron and Akin Osteotomies (MICA) for hallux valgus. Methods: A single surgeon case series of patients with hallux valgus underwent primary, third generation MICA for hallux valgus. Pre- and post-operative (6 weeks after surgery) radiological assessments of the IMA and HVA were based on weight-bearing dorso-plantar radiographs. Radiographic measurements were conducted by two foot & ankle fellowship trained consultant surgeons (RR, DG). Paired t-tests were used to determine the statistically significant difference between pre- and post-operative measurements. Results: Between January 2017 and December 2019, 401 MICAs were performed in 274 patients. Pre- and post-operative radiograph measurements were collected for 348 feet in 232 patients (219 female; 13 male). The mean age was 54.4 years (range 16.3-84.9, standard deviation (s.d.) 13.2). Mean pre-operative IMA was 15.3° (range 6.5°-27.0°, s.d. 3.4°) and HVA was 33.8° (range 9.3°-63.9°, s.d. 9.7°). Post-operatively, there was a statistically significant improvement in radiological deformity correction; mean IMA was 5.3° (range -1.2°-16.5°, s.d. 2.7°, p<0.001) and mean HVA was 8.8° (range -5.2°-24.0°, s.d. 4.5°, p<0.001). The mean post-operative reduction in IMA and HVA was 10.0° and 25.0° respectively. Conclusion: This is the largest case series demonstrating radiological outcomes following third generation Minimally Invasive Chevron and Akin Osteotomies (MICA) for hallux valgus to date. These data show that this is an effective approach at correcting both mild and severe hallux valgus deformities. Longer term radiological outcome studies are needed to investigate whether there is any change in radiological outcomes. Correlation with patient reported outcomes is planned.

scholarly journals Management of Juvenile Hallux Valgus Deformity: the role of combined Hemiepiphysiodesis

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Ming-Hung Chiang ◽  
Ting-Ming Wang ◽  
Ken N. Kuo ◽  
Shier-Chieg Huang ◽  
Kuan-Wen Wu
Keyword(s):  
Hallux Valgus ◽  
Skeletal Maturity ◽  
Proximal Phalanx ◽  
Case Series ◽  
Large Degree ◽  
Retrospective Case ◽  
Level Of Evidence ◽  
Hallux Valgus Deformity ◽  
The Mean

Abstract Background This study aimed to investigate the efficacy of percutaneous hemiepiphysiodesis for gradual correction of symptomatic juvenile hallux valgus (HV) deformity. Methods Between 2012 to 2014, 24 patients with symptomatic juvenile HV were treated by combined percutaneous medial drilling hemiepiphysiodesis of the first proximal phalanx and lateral transphyseal screw hemiepiphysiodesis of the first metatarsal at our institution. Twenty-one of 24 patients fulfilled inclusion criteria had a complete radiological and clinical follow-up of at least 2 years. Preoperative and postoperative radiographs of the feet were reviewed for measurements of hallux valgus angle (HVA), intermetatarsal angle (IMA), proximal metatarsal articular angle (PMAA), proximal phalangeal articular angle (PPAA), and metatarsal length ratio (MTLR). Clinical outcomes were assessed using the AOFAS hallux metatarsophalangeal-interphalangeal score. Results The study included 21 consecutive patients (37 ft) for analysis. The mean age at surgery was 12.0 years (SD = 1.3) and mean follow-up after surgery was 35.1 months (SD = 6.0). With the data available, the HV deformity improved in terms of the reduction of HVA by a mean of 4.7 degrees (P < .001) and the reduction of IMA by 2.2 degrees (P < .001). The PMAA and PPAA also improved significantly in the anteroposterior plane; however, the PMAA difference was insignificant in lateral plane as expected. The mean difference in the MTLR was 0.00 (P = .216) which was indicative of no length discrepancy between first and second metatarsals. The AOFAS score increased from 68.7 to 85.2 (P < .001). In correlation analysis, time to physeal closure was significantly correlated with the final HVA change (r = −.611, P = .003). Conclusion Although combined hemiepiphysiodesis does not create a large degree of correction as osteotomy, yet it did improve HV deformity with adequate growth remaining in our series. It is a procedure that can be of benefit to patients with symptomatic juvenile HV from this minimal operative approach before skeletal maturity. Level of evidence Level IV, retrospective case series.

scholarly journals One-step bone marrow-derived cell transplantation in talarosteochondral lesions: mid-term results

Joints ◽  
2013 ◽  
Vol 01 (03) ◽  
pp. 102-107 ◽  
Author(s):  
Roberto Buda ◽  
Francesca Vannini ◽  
Marco Cavallo ◽  
Matteo Baldassarri ◽  
Simone Natali ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Scale Score ◽  
Case Series ◽  
Clinical Results ◽  
Osteochondral Lesions ◽  
Prospective Clinical Study ◽  
One Step ◽  
Bone Marrow Derived Cells ◽  
The Mean

Purpose: to verify the capability of scaffold-supported bone marrow-derived cells to be used in the repair of osteochondral lesions of the talus. Methods: using a device to concentrate bone marrow-derived cells, a scaffold (collagen powder or hyaluronic acid membrane) for cell support and platelet gel, a one-step arthroscopic technique was developed for cartilage repair. In a prospective clinical study, we investigated the ability of this technique to repair talar osteochondral lesions in 64 patients. The mean follow-up was 53 months. Clinical results were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) scale score. We also considered the influence of scaffold type, lesion area, previous surgery, and lesion depth. Results: the mean preoperative AOFAS scale score was 65.2 ± 13.9. The clinical results peaked at 24 months, before declining gradually to settle at a score of around 80 at the maximum follow-up of 72 months. Conclusions: the use of bone marrow-derived cells supported by scaffolds to repair osteochondral lesions of the talus resulted in significant clinical improvement, which was maintained over time. Level of Evidence: level IV, therapeutic case series.

scholarly journals Preliminary results of the correction of metatarsus adductus associated with severe hallux valgus

2019 ◽  
Vol 13 (1) ◽  
pp. 63-69
Author(s):  
Leonardo Fernandez Maringolo ◽  
Vinicius Felipe Pereira ◽  
Eduardo Souza Maciel ◽  
Danilo Oliveira ◽  
Nacime Salomão Barbachan Mansur ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Hallux Valgus ◽  
Case Series ◽  
Level Of Evidence ◽  
Correction Angle ◽  
Metatarsal Bones ◽  
Common Diagnosis ◽  
Metatarsus Adductus ◽  
The Mean ◽  
Severe Hallux Valgus

Objective: Although hallux valgus is a common diagnosis and there are different well-described techniques for its correction, the presence of this deformity associated with a diagnosis of metatarsus adductus is relatively uncommon, and there is no consensus regarding surgical treatment. The objective of this study was to evaluate the preliminary radiographic results of angular corrections obtained in a series of cases of the surgical treatment of severe hallux valgus associated with adduction of the metatarsal bones, following the technique proposed herein. Methods: Retrospective data were collected from the medical records and pre- and postoperative radiographs of patients subjected to Lapidus arthrodesis combined with lateral rotation osteotomy at the bases of the second and third metatarsals. The following angular measurements were performed before and after surgery: hallux valgus angle, intermetatarsal angle, and the degree of adduction of metatarsal bones (measured by Sgarlato’s and Engel’s angles). The mean follow-up period was 18 months (16-24 months). Results: The mean hallux valgus correction angle was 31° (19-53°), and the mean intermetatarsal correction angle was 5.771° (2-9°). Regarding the forefoot adduction, the mean correction angle measured by the Sgarlato technique was 15.57° (12-21°) and by the Engel technique was 15.71° (10-22°). All of the measured angles decreased significantly in the postoperative assessment. Conclusion: Lapidus arthrodesis combined with rotational osteotomy at the bases of the second and third metatarsals proved to be effective for correcting the adduction of the metatarsals, allowing for the alignment of the first metatarsal and consequent correction of the deformity. Level of Evidence IV; Therapeutic Studies; Case Series.

scholarly journals One Year Follow-Up of Patient Reported Outcomes Following Third Generation Minimally Invasive Chevron Akin Osteotomies (MICA) in Hallux Valgus Surgery

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0032
Author(s):  
Thomas L. Lewis ◽  
Robbie Ray ◽  
David Gordon
Keyword(s):  
Minimally Invasive ◽  
Hallux Valgus ◽  
Patient Reported Outcomes ◽  
Case Series ◽  
Third Generation ◽  
Short Term ◽  
Patient Reported ◽  
The Mean ◽  
One Year

Category: Bunion Introduction/Purpose: The aim of this study was to explore the short-term results of third generation (using screw fixation) Minimally Invasive Chevron and Akin osteotomies (MICA) for hallux valgus correction. There is a paucity of published data regarding the outcomes of this relatively new technique. We present the largest series in the literature, using three separate validated patient-reported outcome measures (EQ-5DL, VAS Pain and Manchester Oxford Foot Questionnaire (MOXFQ), for this time point. Methods: A single surgeon case series of patients with hallux valgus underwent primary third generation minimally invasive chevron and akin osteotomies (MICA) for hallux valgus correction. Between August 2015 and January 2019, 430 MICAs were performed in 295 patients that were eligible for 1 year follow up. Baseline and 1 year post-operative patient reported outcomes were collected for 242 feet in 194 patients (182 females; 12 males). Paired t-tests were used to determine the statistical significance of the difference between pre- and post-operative scores. Results: The mean age was 55.9 (range 16.3-84.9, standard deviation (s.d.) 12.5). At one year follow up, the mean MOXFQ scores had improved for each domain: Pain; baseline 41.9 (range 0-100, s.d. 21.8), reduced to 13.8 (range 0-90, s.d. 17.7, p<0.001); Walking; baseline 34.6 (range 0-100, s.d. 24.3) reduced to 9.8 (range 0-89.0, s.d. 18.0, p<0.001); Social interaction; baseline 45.4 (range 0-100, s.d. 22.8), reduced to 8.2 (range 0-75.0, s.d. 14.7, p<0.001). Mean VAS Pain score improved from 29.8 (range 0.0-90.0, s.d. 22.1) to 8.2 (range 0.00-64.0, s.d. 12.8, p<0.001). Mean EQ-5D index score improved from 0.755 (range 0.066-1.000, s.d. 0.136) to 0.891 (range 0.350-1.000, s.d. 0.124, p<0.001). Mean EQ-5D VAS score improved from 83.4 (range 28- 100, s.d. 12.4) to 85.6 (range 0-100, s.d. 14.2, p=0.047). Conclusion: This is the largest prospective case series of short-term patient reported outcomes using a validated assessment method for hallux valgus, following third generation MICA to date. These data show that this technique is effective at improving foot and ankle specific patient reported outcomes at 1 year. This cohort is being followed over the longer term.

scholarly journals Six Month Follow-Up of Patient Reported Outcomes Following Third Generation Minimally Invasive Chevron Akin Osteotomies (MICA) in Hallux Valgus Surgery

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0033
Author(s):  
Thomas L. Lewis ◽  
Robbie Ray ◽  
David Gordon
Keyword(s):  
Minimally Invasive ◽  
Hallux Valgus ◽  
Patient Reported Outcomes ◽  
Case Series ◽  
Third Generation ◽  
Short Term ◽  
Specific Patient ◽  
Patient Reported ◽  
The Mean

Category: Bunion Introduction/Purpose: The aim of this study was to explore the short-term results of third generation (using screw fixation) Minimally Invasive Chevron and Akin osteotomies (MICA) for hallux valgus correction. There is a paucity of published data regarding the outcomes of this relatively new technique. We present the largest series in the literature, using three separate validated patient-reported outcome measures (EQ-5DL, VAS Pain and Manchester Oxford Foot Questionnaire (MOXFQ), for this time point. Methods: A single surgeon case series of patients with hallux valgus underwent primary third generation minimally invasive chevron and akin osteotomies for hallux valgus correction. Between August 2015 and July 2019, 478 MICAs were performed in 328 patients that were eligible for 6 month follow up. Baseline and 6 month post-operative patient reported outcomes were collected for 340 feet in 267 patients (247 females; 20 males). Paired t-tests were used to determine the statistical significance of the difference between pre- and post-operative scores. Results: The mean age was 54.9 (range 16.3-84.9, standard deviation (s.d.) 12.8). At 6 month follow up, the mean MOXFQ scores had improved for each domain: Pain; baseline 42.5 (range 0-100, s.d. 22.6), reduced to 16.3 (range 0-100, s.d. 18.4, p<0.001); Walking; baseline 35.5 (range 0-100, s.d. 24.8), reduced to 12.2 (range s.d. 19.1, p<0.001); Social interaction; baseline 45.4 (range 0- 100, s.d. 22.6), reduced to 10.9 (range 0-100.0, s.d. 16.9, p<0.001). Mean VAS Pain score improved from 30.5 (range 0.0-90.0, s.d. 22.1) to 10.5 (range 0.00-78.0, s.d. 14.8, p<0.001). Mean EQ-5D index score improved from 0.752 (range 0.066-1.000, s.d. 0.133) to 0.872 (range 0.122-1.000, s.d. 0.133, p<0.001). Mean EQ-5D VAS score remained static from 82.7 (range 0-100, s.d. 13.3) to 83.7 (range 0-100, s.d. 17.8, p=0.386). Conclusion: This is the largest prospective case series of short-term patient reported outcomes using a validated assessment method for hallux valgus, following third generation MICA to date. These data show that this technique is effective at improving foot and ankle specific patient reported outcomes at 6 months. This cohort is being followed over the longer term.

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