Minimally Invasive Retrocapital Osteotomy of the First Metatarsal in Hallux Valgus Deformity

OBJECTIVE: Percutaneous retrocapital distal osteotomy of the first metatarsal for surgical treatment of hallux valgus. INDICATIONS: Mild to moderate hallux valgus deformity in both juveniles and adults. Recurrent hallux valgus deformity after previous surgery. CONTRAINDICATIONS: Severe degenerative changes of the first metatarsophalangeal joint (hallux valgus et rigidus). Previous Keller's procedure. SURGICAL TECHNIQUE: A percutaneous distal linear osteotomy of the first metatarsal is performed and stabilized with a Kirschner wire. The surgical technique follows these steps: distal Kirschner wire insertion; skin incision; sparse periosteal detachment; distal retrocapital osteotomy of the first metatarsal; correction of the first intermetatarsal angle by lateral displacement of the capital fragment; stabilization with Kischner wire insertion into the proximal metatarsal; postoperative taping. RESULTS: The patients were satisfied following 107 (91%) of 118 consecutive percutaneous procedures with a follow-up of 35.9 months (range 24-78 months). According to the American Orthopaedic Foot and Ankle Society (AOFAS) hallux metatarsophalangeal-interphalangeal scale for the clinical assessment, a mean score of 88.2 +/- 12.9 was obtained at follow-up. The clinical results can be compared to those obtained with open techniques, with the advantages of a minimally invasive procedure.     

Early results of distal metatarsal osteotomy through minimally invasive approach for mild-to-moderate hallux valgus

A prospective study was performed on 24 patients to evaluate the early results of our experience with minimally invasive distal metatarsal osteotomy to treat mild-to-moderate hallux valgus deformities in adults. After failure of conservative treatment and persistence of footwear-related pain, a percutaneous distal first metatarsal osteotomy was performed, stabilized by a Kirschner wire, followed by immediate weight bearing. At final follow-up, clinical assessment showed that 31 of 36 patients were satisfied with their results. At a mean of 21 months, weight-bearing foot radiographs showed significant change compared with the preoperative status : the average corrections of hallux valgus angle and first intermetatarsal angle achieved were 13.10 and 5.40, respectively (p < 0.001). No cases showed nonunion, malunion, overcorrection, transfer metatarsalgia or osteonecrosis. The technique appeared in this study to be an effective, safe and simple option for correction of a painful mild-to-moderate hallux valgus deformity.     

Radiographic results after percutaneous distal metatarsal osteotomy for correction of hallux valgus deformity

BACKGROUND: The goal of the study was to evaluate the short-term radiographic results and complications of a percutaneous distal metatarsal osteotomy for hallux valgus. METHODS: From June, 2005, until October, 2005, a percutaneous distal first metatarsal osteotomy was performed in 13 consecutive patients. All patients had mild to moderate hallux valgus deformities preoperatively. The mean postoperative followup was 130 (range 50 to 207) days. The radiographs were reviewed for hallux valgus angle, 1-2 intermetatarsal angle, nonunion, malunion, and osteonecrosis. RESULTS: The mean 2 weeks postoperative hallux valgus angle demonstrated a statistically significant (p < 0.0001) improvement from 25 (16 to 33) degrees preoperatively to 5 (-1 to 12) degrees postoperatively. Nine patients (69%) demonstrated dorsally angulated alignment of the first metatarsal at the first postoperative examination averaging 10.8 (6 to 15) degrees that increased to 15.9 (10 to 22) degrees at final followup. One patient developed cystic changes within the metatarsal head consistent with osteonecrosis. One patient developed a nonunion with no evidence of radiographic healing at most recent followup of 180 days. Five patients (38%) had recurrent hallux valgus defined as a final angle of greater than 15 degrees. CONCLUSIONS: Percutaneous distal metatarsal osteotomy for hallux valgus is associated with an unacceptable rate of complications, specifically, osteonecrosis, nonunion, malunion, and recurrence. The intraoperative correction was routinely lost after removal of the intramedullary Kirschner wire, leading to a high rate of recurrence of hallux valgus deformity as well as dorsal elevation of the capital fragment.     

Percutaneous double metatarsal osteotomy for correction of severe hallux valgus deformity

Double osteotomy of the first metatarsal is an option in treatment of severe hallux valgus deformity. Good short-term results have been reported with percutaneous surgery in hallux valgus with moderate deformity. We report short-term results with percutaneous double osteotomy of the first metatarsal in severe deformities. This is a prospective study of 6 patients with severe hallux valgus deformity who were treated with percutaneous double osteotomy of the first metatarsal (proximal closing wedge and distal chevron osteotomy) in 2008. They were assessed preoperatively and one year and two years after surgery, with clinical and radiological AOFAS MTP-IP score. All patients were satisfied. The AOFAS score improved from 34 to 84. The postoperative radiological assessment showed significant improvement, compared with preoperative values of the intermetatarsal and hallux valgus angles. No complications were encountered. Post-operative stiffness of the first MT joint was observed but resolved after physiotherapy. This preliminary study showed that correction of severe hallux valgus deformity by percutaneous double osteotomy can achieve good clinical and radiological results. A larger number of cases with a longer follow-up is needed to firmly demonstrate the advantages of this technique compared with classical open surgical techniques in the treatment of severe hallux valgus deformities.     

Minimally invasive surgery for young female patients with mild-to-moderate juvenile hallux valgus deformity

BackgroundWe aimed to compare the clinical and radiographic outcomes of minimally invasive surgery (MIS) and distal chevron metatarsal osteotomy (DCMO) for young female patients with mild-to-moderate juvenile hallux valgus deformity.MethodsWe retrospectively reviewed the radiographs and clinical findings of young female patients with mild-to-moderate juvenile hallux valgus who underwent MIS (25 feet) or DCMO (30 feet). In 12 of 25 MIS feet, 2.0-mm bio-absorbable pins were used as an additional fixation device crossing the osteotomy site, and 1.4-mm Kirschner wires were used in the remaining 13 feet.ResultsRadiographic and clinical parameters preoperatively and at the final follow-up were not significantly different between the 2 groups. There were no significant differences in the increments of hallux valgus angle (HVA), distal metatarsal articular angle, medial sesamoid position, first metatarsal length, metatarsal length index, or relative second metatarsal length. Two MIS subgroups according to the additional fixation device showed no significant differences in HVA, the first to second intermetatarsal angle lateral translation ratio, or plantar offset at the final follow-up.ConclusionsMIS for young female patients with mild-to-moderate juvenile hallux valgus deformity had similar radiographic and clinical outcomes compared to DCMO. Regarding additional fixation crossing the osteotomy site, both temporary Kirschner wires and absorbable pins showed no radiographic differences in terms of correction maintenance.Level of evidence: 3.     

Is Double Metatarsal Osteotomy Superior to Proximal Chevron Osteotomy in Treatment of Hallux Valgus With Increased Distal Metatarsal Articular Angle?

We compared the results of proximal chevron osteotomy and double metatarsal osteotomy for hallux valgus with an increased distal metatarsal articular angle (DMAA). From October 2008 to December 2012, first metatarsal osteotomies were performed in 64 patients (69 feet) with symptomatic hallux valgus associated with an increased DMAA. Proximal chevron with Akin osteotomy and lateral soft tissue release was performed in 46 feet (PCO group); double metatarsal osteotomy and Akin osteotomy without lateral soft tissue release was performed in 23 feet (DMO group). Clinical assessments were performed using the American Orthopaedic Foot and Ankle Society (AOFAS) scale and visual analog scale (VAS). The hallux valgus angles, intermetatarsal angles, sesamoid positions, metatarsus adductus angles, and DMAAs were compared at different postoperative times. Postoperative shortening of first the metatarsal and complications were compared. The mean AOFAS scale and VAS scores showed significant improvement in both groups after surgery; however, no significant difference was observed between the 2 groups. The immediate postoperative hallux valgus angle and sesamoid position were significantly larger in DMO group; however, no intergroup difference was observed at the last follow-up visit, with the hallux valgus angle gradually increasing in the PCO group. The postoperative DMAA was significantly smaller in the DMO group. The mean shortening of the first metatarsal after surgery was significantly larger in the DMO group than in the PCO group. Transfer metatarsalgia developed in 1 foot (2.2%) in the PCO group and 2 feet (8.7%) in the DMO group. Partial avascular necrosis of the metatarsal head with advanced arthritis of the first metatarsophalangeal joint developed in 1 foot (4.3%) in the DMO group. In conclusion, no differences in the clinical and radiographic results were observed between the 2 groups for hallux valgus deformity with an increased DMAA.     

Correction of metatarsus primus varus associated with hallux valgus deformity using the arthrex mini tightrope: a report of 44 cases

Metatarsus primus varus must be addressed during correction of moderate to severe hallux valgus deformity. As an alternative to proximal osteotomy or first tarsometatarsal fusion for hallux valgus correction, this study presents a series of patients treated using the Arthrex Mini TightRope. A total of 36 patients (44 operations) with hallux valgus and metatarsus primus varus underwent correction using the Arthrex Mini TightRope. Assessment included measurement of radiographic parameters, the American Orthopaedic Foot and Ankle Society (AOFAS) midfoot outcomes score, and the SF-12. The average hallux valgus angle improved from 32.2° to 15.2° (P < .0001). The average first intermetatarsal angle improved from 14.6° to 8.2° (P < .0001). The average distal metatarsal articular angle improved from 17.0° to 9.6° (P < .0001). The average AOFAS midfoot outcomes scores improved from 45.44 to 84.72 (P < .0001). Postoperative SF-12 physical and mental scores averaged 52.99 and 56.63. Only one patient had recurrence of deformity. Correcting metatarsus primus varus in association with hallux valgus deformity using the Arthrex Mini TightRope should be considered a treatment option. This technique is less invasive and seems capable of maintaining correction while allowing for early weight bearing and avoiding the need for a proximal first metatarsal osteotomy or Lapidus procedure.     

Basal medial opening wedge first metatarsal osteotomy stabilized with a low profile wedge plate

Twenty patients underwent 25 basal medial opening wedge osteotomies of the first metatarsal stabilized using a low-profile wedge plate in combination with a distal soft tissue release, distal metatarsal osteotomy and Akin osteotomy as required for correction of a hallux valgus deformity. The mean clinical and radiographic follow-up was 12.2 months. Pre- and post operative radiographs available in 15 cases showed that the median hallux valgus angle (HVA), intermetatarsal angle (IMA) and distal metatarsal articular angle (DMAA) were corrected from 45.5 to 13.1, 17.7 to 9.2 and 243 to 10.0 degrees respectively (p < 0.001). Final radiographic assessment for the whole series showed a median final HVA and IMA of 14.1 and 9.1 respectively. Radiographic union was noted in all but one case which was asymptomatic. One wound infection was treated with oral antibiotics, one hallux varus deformity required soft tissue reconstruction and there was one recurrence. The outcome was reported as good or satisfactory by the patients for 20 of 25 feet. Three patients reported stiffness in the first MTP joint, which improved with joint injection and manipulation. Two plates were removed for prominence. The basal medial opening wedge osteotomy stabilized with a low profile wedge plate was an effective addition for correcting a moderate to severe hallux valgus deformity as part of a double or triple first ray osteotomy.     

Relationship between Foot Width Reduction and Clinical Outcomes after Chevron Osteotomy for Hallux Valgus Deformity

BackgroundRadiological correction of hallux valgus deformity is the objective of operation and related to successful outcomes. Nonetheless, footwear problems related to foot width can also affect the clinical outcome. Few studies have analyzed changes in foot width, and data on clinical outcomes after correction of hallux valgus deformity are scarce.MethodsThe study included 159 cases with symptomatic hallux valgus deformity who underwent proximal or distal chevron metatarsal osteotomy and were followed up for a mean of 32.8 months. Radiologically, the hallux valgus angle, intermetatarsal angle, first metatarsal head width, bony foot width, and soft-tissue foot width were analyzed. Clinically, the visual analog scale for pain and American Orthopaedic Foot and Ankle Society (AOFAS) hallux metatarsophalangeal-interphalangeal score were evaluated.ResultsThe preoperative hallux valgus was corrected radiologically at the last follow-up. The bony foot width was reduced by 9.4%, and the soft-tissue foot width was reduced by 7.1% (p < 0.001 for all). The mean AOFAS score improved from 51.2 preoperatively to 89.4 at the final follow-up (p < 0.001). In multiple regression, the perioperative changes of bony foot width were associated with final AOFAS score (p = 0.029).ConclusionsChevron osteotomy performed for hallux valgus deformity resulted in satisfactory radiological and clinical outcomes. Perioperative changes in bony foot width showed a significant correlation with AOFAS score. Therefore, to correct hallux valgus deformity, it is necessary to correct known radiological indicators sufficiently and make efforts simultaneously to reduce the foot width optimally.     

Minimal invasive Hallux valgus Korrektur über intraartikuläre perkutane Chevron Akin-Osteotomie (PECA)

BackgroundThe minimally invasive correction of hallux valgus is also becoming increasingly popular in German-speaking countries. Numerous percutaneous techniques for correcting the first ray have been published in recent years. To this day, there is still no clarity about the benefits of each technique.Material and MethodsFrom 2019 to 2021, a percutaneous intra-articular Chevron-Akin osteotomy (PECA) with fixation of the metatarsal osteotomy via a double-threaded screw was performed on 70 feet. The radiological parameters (intermetatarsal angle, hallux valgus angle) and the American Orthopedic Foot and Ankle score (AOFAS) were evaluated pre- and postoperatively.ResultsAfter a mean follow-up of 6 months, the radiological parameters were significantly improved. The intermetatarsal angle improved from 13.1° to 5.9°, the hallux valgus angle from 27.4° to 9.3°. The AOFAS improved from 51.4 points preoperatively to 91.2 points postoperatively. There were 2 relevant complications in the group studied, a screw irritation necessitating early metal removal and a secondary dislocation of the 1st metatarsal head necessitating open revision.ConclusionsThe results show the good correction potential of the PECA technique used to treat a mild to moderate hallux valgus deformity. However, further investigations with long-term results and studies comparing the various established percutaneous distal osteotomy procedures are urgently needed in order to increase the comparability of the different procedures.     

Percutaneous distal metatarsal osteotomy versus distal chevron osteotomy for correction of mild-to-moderate hallux valgus deformity

Purpose

A lot of procedures were described for managing hallux valgus deformity. Percutaneous metatarsal osteotomies have received increasing recognition in the previous decade. The proposed benefits revolve primarily around the shorter surgical time, lower incidence of complications, and higher patient satisfaction. However, there is insufficient evidence to determine whether this technique is comparable to traditional open approaches.

Materials and methods

A total of 64 consecutive feet (53 patients) with mild-to-moderate symptomatic hallux valgus were randomly assigned into two groups to compare the results of percutaneous distal metatarsal osteotomy (group I, 31 feet) and distal chevron osteotomy (group II, 33 feet). All patients were clinically assessed using the American Orthopedic Foot and Ankle Society (AOFAS) scoring system. Radiographical assessment was done using the hallux valgus angle (HVA) and intermetatarsal angle (IMA).

Results

The mean correction of HVA and IMA achieved in group I was 14.4° and 4.8°, respectively, while in group II, it was 13.1° and 3.9°, respectively. The mean AOFAS score improved from a pre-operative of 44.6 points to 90.2 points in group I, and from 47.5 points to 87.7 points in group II. In group I, 26/29 patients (89.6?%) were happy with the cosmetic results of the surgery, compared to 20/31 patients (64.5?%) in group II.

Conclusion

The results of this study support the idea that percutaneous distal metatarsal osteotomy yields good functional and radiological result and is associated with a high degree of postoperative patient satisfaction.     

Biplanar chevron osteotomy

Results of biplanar chevron osteotomy performed on patients with mild-to-moderate hallux valgus deformity with an increased distal metatarsal articular angle (DMAA) are shown. The study included clinical data of 32 patients (54 feet) who had completed a 2-year follow-up, and radiological data of these 32 and other 29 patients (50 feet) for a total of 61 patients (104 feet, 53 right and 51 left). There were 59 females and two males with ages varying from 11 to 66 years. According to the AOFAS Hallux Rating, the preoperative average score (50) improved to 90 (average score after the surgery). The hallux valgus angle was improved from an average of 25 degrees to 14 degrees, the first intermetatarsal angle from 12 degrees to 8 degrees and the DMAA from 15 degrees to 5 degrees. At the end of treatment, 94% of patients were classified as having grade 0 or 1 sesamoid lateral sub-luxation. Given improvement in angles and 90% of patients satisfied with an average AOFAS postoperative score of 90, the technique seems indicated for treatment of symptomatic hallux valgus deformity with increased DMAA.     

Scarf osteotomy for hallux valgus deformity: an intermediate followup of clinical and radiographic outcomes

BACKGROUND: The scarf osteotomy is a versatile and reproducible procedure for the correction of moderate to severe hallux valgus deformity (intermetatarsal angle 12 to 20 degrees hallux valgus angle 20 to 46 degrees). METHODS: We evaluated the results of 27 consecutive scarf osteotomies at an average followup of 16.1 months. Radiographic parameters, foot pressure analysis, and AOFAS scores were analyzed before and after surgery. RESULTS: Hallux valgus angles improved from 34.5 to 16.9 degrees, intermetatarsal angles improved from 15.4 to 10.1 degrees, AOFAS scores improved from 54.5 to 86.5. There was no change between the preoperative and postoperative relative lengths of the first and second metatarsals, defined as the difference between the first and second metatarsal lengths. The measurement was based on the anteroposterior standing radiographs and measured by a line intersecting the midway point at the diaphyseal-metaphyseal junction of the metatarsal and extending from the most proximal to distal aspects of the bone. The angle of Meary (talo-first metatarsal angle) did not change, except in one patient. Foot pressure analysis showed no evidence of transfer metatarsal lesions. The complication rate was 1.1% including superficial infection and recurrence. CONCLUSIONS: The scarf osteotomy provides a predictable and effective correction of moderate to severe hallux valgus deformities.     

经皮微创截骨术联合8字绷带和分趾垫外固定治疗中度拇外翻

目的:探讨经皮微创截骨术联合“8”字绷带和分趾垫外固定治疗中度拇外翻的临床疗效。方法:自2019年8月至2021年1月采用经皮微创截骨术联合“8”字绷带和分趾垫外固定治疗中度拇外翻患者23例,失访1例,最终纳入22例(30足),男4例6足,女18例24足,年龄27～66 (50.59±11.95)岁。比较术前和术后6个月患足拇外翻角(hallux valgus angle,HVA),第1、2跖骨间角(intermetatarsal angle,IMA),跖骨跨度(第1、5跖骨头之间的距离)和软组织宽度变化情况,并采用美国足踝外科协会踝-后足评分标准(American Orthopaedic Foot and Ankle Society,AOFAS)进行临床疗效评价,采用视觉模拟评分(visual analogue scale,VAS)评价足部自觉疼痛情况。结果:22例患者获得随访,时间5.7～6.4(6.13±0.85)个月。患者第1跖骨截骨处均获得骨性愈合,足趾外观畸形得到纠正,术后患足未出现跖骨头缺血性坏死、转移性跖骨痛等并发症。术后6个月患足HVA、IMA、跖骨跨度、软组织宽度、...     

Clinical results with the Ludloff osteotomy for correction of adult hallux valgus

BACKGROUND: Biomechanically, the Ludloff osteotomy fixed with lag screw compression has been shown to be more rigid than proximal crescentic and other proximal first metatarsal osteotomies for correction of symptomatic hallux valgus with a moderate to severe increase in the first intermetatarsal angle. The Ludloff osteotomy may, therefore, have a lower incidence of dorsal malunion and transfer metatarsalgia than other proximal first metatarsal osteotomies, such as the crescentic or chevron. METHODS: We reviewed the results of 82 consecutive cases of moderate to severe hallux valgus deformities corrected with the Ludloff oblique metaphyseal-diaphyseal osteotomy of the first metatarsal combined with a distal soft-tissue procedure and medial eminence resection. RESULTS: Follow-up was possible in 70 cases (85%) at an average of 30 months (range, 18 to 42 months). Preoperatively, the mean hallux valgus and first intermetatarsal angles were 31 degrees and 16 degrees, respectively. Postoperatively, these values improved to an average of 11 degrees and 7 degrees. In the sagittal plane, the first metatarsal was plantarflexed by an average of 1 mm, and there were no symptomatic transfer lesions of the second metatarsal. The mean AOFAS hindfoot score improved from 54 to 91 points. Complications included prominent hardware requiring removal (5), hallux varus (4), delayed union (3), superficial infection (3), and neuralgia (3). CONCLUSIONS: The use of the Ludloff oblique first metatarsal osteotomy resulted in excellent correction of the first intermetatarsal angle in patients with moderate to severe hallux valgus. With the plane of the osteotomy and rigidity of fixation, immediate ambulation was possible with minimal risk of dorsiflexion malunion of the first metatarsal.     

足横弓重建法治疗外翻

目的 :介绍一种伴有足横弓塌陷的严重外翻的手术方法。方法 :12例伴有足横弓塌陷的严重的外翻足首先经X线、CT检测其三维畸形程度 ,而后手术中采用第一跖骨基底截骨 ,远端外推、下压、外旋以纠正第一跖骨的三维畸形 ,恢复足横弓正常形态 ,矫形位置以克氏针固定 :对外翻角 (HVA)的纠正采用常规第一跖趾关节软组织手术。结果 :术后 3～ 12月随访 ,优 6例、良 4例、中 2例 ,优良率 83 % ,其中 ,前足底中部痛性胼胝均有明显减轻。结论 :足横弓重建手术是严重外翻较好的选择术式。     

Transosseous capsuloplasty improves the outcomes of Lindgren–Turan distal metatarsal osteotomy in moderate to severe hallux valgus deformity

Introduction

Lindgren–Turan osteotomy used in hallux valgus deformity is a subcapital, transverse displacement osteotomy of the first metatarsal without any additional capsular repair. The aims of this study are to describe a transosseous capsuloplasty technique in this procedure and evaluate whether capsuloplasty would improve the clinical and radiological outcomes in patients with moderate to severe hallux valgus deformity.

Methods

Twenty-three feet operated by Lindgren–Turan osteotomy (Group B) and 25 feet operated by the same osteotomy combined with transosseous capsuloplasty (Group A) were evaluated retrospectively for the correction of the hallux valgus, intermetatarsal and distal metatarsal articular angles, sesamoid reduction, American Orthopaedic Foot and Ankle Society (AOFAS) Clinical Rating Scale as well as patient satisfaction. The mean postoperative follow-up was 14 (range 12–28) months.

Results

All radiological parameters improved considerably as a result of both groups. However, postoperative improvements in intermetatarsal and distal metatarsal articular angles were greater in Group A. Complete reduction of medial sesamoid was achieved in 52% of patients in Group A, whereas 17.4% of patients in Group B had complete reduction. AOFAS scores and number of patients with complete satisfaction in Group A were significantly greater than that in Group B.

Conclusion

Better clinical and radiological outcomes can be achieved in patients with moderate to severe hallux valgus deformity operated by Lindgren–Turan distal metatarsal osteotomy, when it combines with transosseous capsuloplasty.     

The results of treatment of hallux valgus with subcapital osteotomy of the first metatarsal bone]

This paper presents results of wedge subcapital osteotomy of the first metatarsal bone with lateral and plantar translation of the distal fragment in 47 feet (44 women age 37-72) operated for hallux valgus deformity. Bone fragments were stabilized with Kirschner wire introduced obliquely from lateral side of the head to the shaft. Protruding out of the skin part of the wire between I and II toe was shaped parallel to the lateral side of hallux preventing from valgisation. The mean AOFAS score improved from the preoperative value of 49 points to 86 points postoperatively. Hallux valgus angle improved from the mean preoperative value of 38 degrees to 17 degrees after operation. The mean postoperative AOFAS score in the group with major deformity (over 40 degrees valgity and 14 degrees intermetatarsal angle) was 76 points. Proposed method of stabilization allows limited activity without fear of correction loss during bone healing. Clinical and radiological results are similar to other authors' results, indicating that subcapital osteotomy gives satisfactory results in correction of medium grade deformity and disappointing results in severe deformities.     

Treatment of hallux valgus with an increased distal metatarsal articular angle: evaluation of double and triple first ray osteotomies

During a 12-year period in which 878 hallux valgus corrections were performed, 18 patients (21 feet) with symptomatic hallux valgus deformity and an increased distal metatarsal articular angle (DMAA) underwent periarticular osteotomies (double or triple first ray osteotomies). They were studied retrospectively at an average follow-up of 33 months. The surgical technique comprised a closing wedge distal first metatarsal osteotomy combined with either a proximal first metatarsal osteotomy or an opening wedge cuneiform osteotomy (double osteotomy). When a phalangeal osteotomy was added, the procedure was termed a "triple osteotomy." The average age of the patients at the time of surgery was 26 years. At final follow-up, the average hallux valgus correction measured 23 degrees and the average 1-2 intermetatarsal angle correction was 9 degrees. The DMAA averaged 23 degrees preoperatively and was corrected to an average of 9 degrees postoperatively. One patient developed a postoperative hallux varus deformity, and one patient developed a malunion, both of which required a second surgery. A hallux valgus deformity with an increased DMAA can be successfully treated with multiple first ray osteotomies that maintain articular congruity of the first metatarsophalangeal joint.     

The minimally invasive hallux valgus correction (S.E.R.I.)

Introduction Distal metatarsal osteotomies have been described for surgical treatment of hallux valgus with good results. The aim of this study is to review the results of 299 consecutive hallux valgus cases treated by minimally invasive distal metatarsal osteotomy, S.E.R.I. (Simple, Effective, Rapid, Inexpensive). Materials and methods 299 feet in 190 patients (109 bilateral), aged between 35 and 70 years (mean age: 53 years) affected by hallux valgus were studied. A 1 cm medial incision at the metatarsal neck, and a complete osteotomy, using an oscillating saw were performed. With the naked eye all characteristics of the deformity were corrected by displacement of the metatarsal head (HVA, IMA, DMAA, dorsal or plantar displacement). The osteotomy was stabilized by a 2 mm Kirschner wire. Immediate weight bearing was allowed with gauze bandage and Talus shoes for 4 weeks. All patients were checked at an average follow-up of 4 years. Results All osteotomies healed no avascular necrosis of the metatarsal head or pseudoarthrosis of the osteotomy was observed. Mean preoperative AOFAS score was 43 and 88 at follow-up. The mean preoperative HVA was 33, while at follow-up it was 16 (P < 0.05), mean preoperative IMA was 13, while at follow-up it was 7 (P < 0.05), mean preoperative DMAA was 20, while at follow-up it was 8 (P < 0.05). Conclusion S.E.R.I. osteotomy has been simple, effective, rapid and inexpensive in correcting hallux valgus deformity. Clinical and radiographic findings showed an adequate correction of the deformity.