scholarly journals WBCT of Hallux Valgus Deformity

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0029
Author(s):  
Ji-Beom Kim ◽  
Woo-Chun Lee ◽  
Chihoon Ahn
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Plain Radiograph ◽  
Valgus Deformity ◽  
Dorsal Side ◽  
Metatarsal Bone ◽  
Lateral Side ◽  
Axial Image ◽  
Hallux Valgus Deformity ◽  
The Mean

Category: Bunion Introduction/Purpose: Distal metatarsal articular angle (DMAA) is important for the treatment of hallux valgus deformity, because high DMAA is a cause of recurrence and stiffness after surgery. However, the DMAA is not commonly measured on plain radiograph, because of its low reliability. The reliability would be increased, if we clearly understand anatomical structure of the DMAA in hallux valgus deformity. In the WBCT, we found that the DMAA was different between dorsal side and plantar side. The purposes of this study were to compare the degree of the DMAA between dorsal side and plantar side in hallux valgus deformity, to identify which side of the DMAA is more correlated with the hallux valgus deformity, and to define standards for the DMAA measurement on plain radiograph. Methods: We retrospectively evaluated patients who underwent surgery for hallux valgus deformity in our clinic from April, 2017 to July, 2017. All patients underwent WBCT and plain weight-bearing radiograph preoperatively. The WBCT was performed using a cone-beam CT scanner (Planmed, Verity). For measuring the DMAA on axial plane image of the WBCT, we set axial plain parallel to sagittal axis of the 1st metatarsal bone. We determined dorsal and plantar axial WBCT images that located immediately below dorsal cortex and immediately over plantar cortex in the 1st metatarsal bone respectively. (Fig.1-A) We measured the DMAA on these dorsal and plantar axial WBCT images. (Fig.1-B) On the plain weight-bearing foot anteroposterior radiograph, we measured hallux valgus angle (HVA) and the DMAA. For measuring the DMAA on the plain radiograph, we defined the distal articular surface from sagittal groove at medial side to sharp edge at lateral side. (Fig. 1-C) Results: Thirty feet from 30 patients were included in this study. The mean age of patients was 55.6 years (range: 21-77). The mean of HVA was 34.9° (range: 22-52). The mean of the DMAA on the dorsal and the plantar axial WBCT images were 12.5°(0.7- 24.1) and 39.0°(16.7 – 57.6), respectively. Paired t test resulted that the DMAA on the plantar axial image was significantly higher than the DMAA on the dorsal axial image (P=0.000). Correlation analysis resulted that only the DMAA on the plantar coronal image was significantly correlated with the HVA (Pearson correlation coefficient:0.380, P=0.038). The intraclass coefficient indicated that the DMAA on the plain radiograph which defined in this study was highly reliable with the DMAA on the plantar coronal WBCT image.(ICC = 0.811) Conclusion: The present study showed that the plantar side DMAA is 27° higher than the dorsal side DMAA. We believed that this difference made confusion to define the DMAA on plain radiograph and decreased reliability for the measurement of the DMAA on the plain radiograph. Because the plantar side DMAA is more correlated with the HVA than the dorsal side DMAA, it is important to measure the plantar side DMAA on the plain radiograph. The present study proved that our definition of the DMAA on plain radiograph was appropriate for measuring the plantar side DMAA.

scholarly journals Shortened First Metatarsal Bone and Newly Developed Second Metatarsalgia after Parallel-shaped Modified Scarf Osteotomy for Hallux Valgus Deformity

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0003 ◽  
Author(s):  
Jae Wan Suh ◽  
Ho-Seong Jang ◽  
Hyun-Woo Park ◽  
Sung Bae Park
Keyword(s):  
Propensity Score ◽  
Hallux Valgus ◽  
Valgus Deformity ◽  
Metatarsal Bone ◽  
First Metatarsal ◽  
Scarf Osteotomy ◽  
Hallux Valgus Deformity ◽  
Second Metatarsal ◽  
The Mean

Category: Bunion Introduction/Purpose: The scarf osteotomy has gained in popularity for the treatment of a symptomatic hallux valgus deformity due to its inherent stability, versatility of correction and early mobilization. We have reported parallel-shaped modified scarf osteotomy(PSMSO) with good functional outcomes and no complication as stress fracture or troughing. However, we encountered second transfer metatarsalgia after the osteotomy. The scarf osteotomy can be shortened, but there was no specific amount of shortening that will produce transfer metatarsalgia in limitation of our literature review. In this study, we measured the shortening of first metatarsal length and investigated the relation of first metatarsal length and second transfer metatarsalgia after PSMSO for hallux valgus deformity. Methods: We retrospectively reviewed 168 consecutive PSMSOs performed in 124 patients with hallux valgus deformity between March 2009 and August 2015. Concomitant other pathologies of foot or previous second metatarsalgia were excluded. After excluding 45 cases, 123 cases in 88 patients were included. For clinical assessment, VAS, the AOFAS Hallux Metatarsophalangeal-Interphalangeal (AOFAS Hallux MTP-IP) Scale were obtained. The hallux valgus angle (HVA), the intermetatarsal angle (IMA), the distal metatarsal articular angle (DMAA), the first metatarsal length measured by a modified Davies and Saxby’s method and the protrusion of second metatarsal relative to first metatarsal using the Maestro’s method were assessed on standard weight bearing radiographs of the foot. For evaluation of the development of second transfer metatarsalgia, callosity or tenderness beneath the second metatarsal head was investigated. After identifying the lesion, we divided two groups with and without second transfer metatarsalgia and compared the variables after propensity score matching. Results: Mean follow-up period was 20.6±7.8 (12-66) months. The mean VAS and AOFAS Hallux MTP-IP score improved significantly (p<0.001). Significant corrections in the HVA, IMA and DMAA were obtained and the mean shortening of the first metatarsal length and the mean relative lengthening of second metatarsal protrusion were -3.1±2.5 mm and +2.5±2.8 mm at last follow-up (p<0.001, p<0.001). Eleven (8.9%, 11/123) cases developed second transfer metatarsalgia after PSMSO. After propensity score matching considered baseline characteristics, 9 cases with second transfer metatarsalgia were compared to 31 cases without it. The group with transfer metatarsalgia showed significant shortening in first metatarsal length and lengthening of second metatarsal protrusion relative to first metatarsal compared to those without the transfer lesion (-4.8±3.8 vs -2.0±2.1, p=0.013, +4.2±1.6 vs +1.9±2.1, p=0.005). Conclusion: Transfer metatarsalgia is one of numerous possible complications after scarf osteotomy. To avoid complications, we suggest that shortening of first metatarsal bone length should be minimized within -2 mm and second metatarsal protrusion relative to first metatarsal kept within +1.9 mm with considering the metatarsal parabola. If the shortening of first metatarsal was done over -4.8 mm, the additional procedure for second metatarsal may be considered.

scholarly journals A Novel Technique for Moderate Hallux Valgus Correction: The BC Osteotomy

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0039
Author(s):  
Gaston Slullitel ◽  
Juan Pablo Calvi ◽  
Victoria Alvarez ◽  
Laura Gaitan ◽  
Valeria Lopez
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Metatarsophalangeal Joint ◽  
Valgus Deformity ◽  
Invasive Technique ◽  
First Metatarsophalangeal Joint ◽  
Hallux Valgus Deformity ◽  
Surgical Methods ◽  
The Mean

Category: Bunion Introduction/Purpose: Surgical correction of hallux valgus rebalances the first ray, correcting the various features of the deformity. While several surgical methods are available, consensus regarding the best management has yet to be established. In the last decades, there was an increasing interest in mini-invasive procedures. In this scenario the Bosch technique appears to be a reproducible DMO to achieve proper correction. Theoretically, it allows for fast and safe correction of the deformity, however it was criticized for its unstable nature. We describe a new distal metatarsal osteotomy (DMO) that it is a combination of the (traditional) chevron and the (mini-invasive) Bosch-SERI techniques. The purpose of this investigation is to describe the surgical technique and report the results of this modified procedure at a minimum 2-year follow-up. Methods: Between January 2016 and June 2018, 63 consecutive patients, with mild to moderate hallux valgus deformity underwent corrective surgery using the BC technique. Preoperatively, each patient’s data was recorded and all patients underwent an assessment of functional limitation and pain level as well as a physical examination that included measurement of the passive range of motion of the first metatarsophalangeal joint. At final follow up, the patients were assessed using the American Orthopaedic Foot & Ankle Society’s (AOFAS) hallux- metatarsophalangeal and interphalangeal scale. Additionally, patients were asked to rate their satisfaction with regard to the overall result of the operation according to the Coughlin overall satisfaction scale. Anteroposterior and lateral weight-bearing radiographs were made preoperatively as well as at the short-term and intermediate-term follow-up evaluations. The HVA, the first IMA, and the congruency of the first metatarsophalangeal joint were measured with the technique recommended by the AOFAS. Results: BC osteotomy was performed in 62 patients, including 33 right feet and 29 left feet, with no bilateral procedures. The patient population consisted of 50 females (79%), with an average age of 50.4 years (range 19 to 75) years. The mean follow-up time was 36.5 months (range 23 to 59). The mean AOFAS score improved from 69.3 preoperatively to 88 postoperatively (p<0.001). IMA and HVA pre and postoperative improved from a median of 30.7 degrees to 11.1 degrees for HVA and 13.9 degrees to 6.5 degrees for the IMA (p<0.001). 82.5% of patients were very satisfied / satisfied with the procedure. There were no cases of infection, however we observed two cases of complex regional pain syndrome and two screws that required removal. Conclusion: We believe this osteotomy has a number of advantages: (1) one mini-invasive approach is used; (2) a large correction can be obtained in all directions including the frontal and sagittal planes; (3) blood supply to the metatarsal head is preserved; and (4) intrinsically stable OT, allowing immediate full weight bearing. The merge, of percutaneous techniques and classic stable fixed approach may seems to offer a stable, effective and reproducible correction of hallux valgus deformity with the advantages of a minimally-invasive technique

scholarly journals Proximal Rotational Metatarsal Osteotomy for Hallux Valgus (PROMO)

2018 ◽  
Vol 3 (3) ◽  
pp. 247301141879007 ◽  
Author(s):  
Pablo Wagner ◽  
Emilio Wagner
Keyword(s):  
Hallux Valgus ◽  
Case Series ◽  
Valgus Deformity ◽  
Metatarsal Osteotomy ◽  
Level Of Evidence ◽  
Reliable Technique ◽  
Intermetatarsal Angle ◽  
Hallux Valgus Deformity ◽  
The Mean ◽  
Prospective Case Series

Background: Hallux valgus deformity consists of a lateral deviation of the great toe, metatarsus varus, and pronation of the first metatarsal. Most osteotomies only correct varus, but not the pronation of the metatarsal. Persistent postoperative pronation has been shown to increase deformity recurrence and have worse functional outcomes. The proximal rotational metatarsal osteotomy (PROMO) technique reliably corrects pronation and varus through a stable osteotomy, avoiding fusing any healthy joints. The objective of this research is to show a prospective series of the PROMO technique. Methods: Twenty-five patients (30 feet) were operated with the PROMO technique. The sample included 22 women and 3 men, average age 46 years (range 22-59), for a mean prospective follow-up of 1 year (range 9-14 months). Inclusion criteria included symptomatic hallux valgus deformities, absence of severe joint arthritis, or inflammatory arthropathies, with a metatarsal malrotation of 10 degrees or more, with no tarsometatarsal subluxation or arthritis on the anteroposterior or lateral foot radiograph views. The mean preoperative and postoperative Lower Extremity Functional Scale (LEFS) score, metatarsophalangeal angle, intermetatarsal angle, metatarsal malrotation, complications, satisfaction, and recurrence were recorded. Results: The mean preoperative and postoperative LEFS scores were 56 and 73. The median pre-/postoperative metatarsophalangeal angle was 32.5/4 degrees and the intermetatarsal angle 15.5/5 degrees. The metatarsal rotation was satisfactorily corrected in 24 of 25 patients. An Akin osteotomy was needed in 27 of 30 feet. All patients were satisfied with the surgery, and no recurrence or complications were found. Conclusions: PROMO is a reliable technique, with good short-term results in terms of angular correction, satisfaction, and recurrence. Long-term studies are needed to determine if a lower hallux recurrence rate occurs with the correction of metatarsal rotation in comparison with conventional osteotomies. Level of evidence: IV, prospective case series.

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 Rotated Insertion Metatarsal Osteotomy with Distal Soft Tissue Procedure for Severe Hallux Valgus Deformity ―Novel Procedure of the 1st metatarsal osteotomy―

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0003
Author(s):  
Norihiro Samoto ◽  
Yasuhito Tanaka ◽  
Ryuhei Katsui ◽  
Kazuya Sugimoto
Keyword(s):  
Soft Tissue ◽  
Hallux Valgus ◽  
Locking Plate ◽  
Valgus Deformity ◽  
Metatarsal Osteotomy ◽  
Rigid Fixation ◽  
Soft Tissue Procedure ◽  
Hallux Valgus Deformity ◽  
The Mean ◽  
Severe Hallux Valgus

Category: Bunion Introduction/Purpose: Hallux valgus deformity is recently a common disease involved in the foot and ankle and many procedures are recommended globally. However it is controversial about the operative treatment for severe hallux valgus. Many authors have reported the technical difficulties and various complications. We performed rotated insertion metatarsal osteotomy with the distal soft tissue procedure for severe hallux valgus deformity since January 2008. The purpose of this study is to evaluate the medium-term outcome of this procedure. Methods: Two hundred thirty-two feet in 173 patients were enrolled in this study and followed them up for a mean of 44.5 months. The mean age at the operation was 64.5 years. Hallux valgus angle(HVA) and intermetatarsal angle(IMA) were measured. This procedure consists of the rotated insertion metatarsal osteotomy and the distal soft tissue procedure. This diaphysial longitudinal metatarsal oblique osteotomy was performed from proximally- medial site of the first metatarsal directed to distally- lateral site through the dorsal exposure. The tip of osteotomized proximal metatarsal was formed at the dorso-distal site to insert in the central intramedullary aspect of osteotomized distal metatarsal. The second triangular cut of one third of dorso-plantar thick was made about 10 to 15 mm length from the lateral tip of osteomized proximal metatarsal. The internal fixation was performed with locking plate with screws. As a result, osteotomized sites were locked each other such as a puzzle. Results: The mean preoperative HVA and IMA were 43.8 degrees and 20.1 degrees. The mean postoperative HVA and IMA were decreased to 9.0 degrees and 6.1 degrees. AOFAS scores improved from 49.3 to 89.7. All cases were obtained complete union. Postoperative displacement was in 12 feet (5.2%) and followed under-correction (or recurrence). Overcorrection (hallux varus) occurred in 10 feet (4.7%). Wound healing was delayed in 21 feet (9.1%). In general, we found no severe complication and unsatisfactory result. Conclusion: This procedure provided satisfactory result for severe hallux valgus deformity. Especially the rigid fixation at the site of metatarsal osteotomy was much stronger because of the insertion and locking plate. However the further more outcomes in detail are essential for longer term follow-up.

scholarly journals PO 18074 - Rotational biplanar Chevron osteotomy

2019 ◽  
Vol 13 (Supl 1) ◽  
pp. 9S
Author(s):  
Tiago Soares Baumfeld ◽  
Marcelo Pires Prado ◽  
Alberto Mendes ◽  
Caio Augusto De Souza Nery ◽  
Daniel Soares Baumfeld
Keyword(s):  
Internal Rotation ◽  
Hallux Valgus ◽  
Valgus Deformity ◽  
Metatarsal Bone ◽  
Distal Fragment ◽  
Rotational Deformity ◽  
First Metatarsal ◽  
Chevron Osteotomy ◽  
Hallux Valgus Deformity ◽  
Rotation Component

Introduction: The Chevron osteotomy is a reliable and popular osteotomy for treating hallux valgus worldwide. Many modifications have been described, but none of them address the rotational deformity of the first metatarsal. The objective of this study is to describe a variation of biplanar Chevron osteotomy that can address first metatarsal rotation when necessary. Methods: The indications for the Rotational Biplanar Chevron Osteotomy (RBCO) are mild to moderate hallux valgus deformity associated with hallux pronation related to internal rotation of the first metatarsal bone. We describe a technique that uses a medial-based wedge parallel to the plantar limb of the osteotomy to free the distal fragment for correct rotation. Results: The more recent concern about hallux valgus surgery represents a very interesting concept that this deformity truly occurs in three different planes, and we may have mistreated the rotation component using current techniques. Many authors have revisited numerous common techniques to adapt them to correct metatarsal pronation. To the best of our knowledge, this is the first paper to describe a modification of the Chevron osteotomy to address rotation of the first metatarsal.  Conclusion: We can conclude that rotational biplanar Chevron osteotomy is an useful tool in the treatment of mild hallux valgus associated with metatarsal pronation.

scholarly journals Does the Presence of Pes Planus Deformity Increase Recurrence of Hallux Valgus Deformity Following Surgery?

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0021
Author(s):  
Gavin Heyes ◽  
Eric Swanton ◽  
Lyndon Mason ◽  
Andrew P. Molloy
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Valgus Deformity ◽  
P Value ◽  
X Rays ◽  
Recurrence Rates ◽  
Pes Planus ◽  
Hallux Valgus Deformity ◽  
Increased Risk

Category: Bunion Introduction/Purpose: Factors linked with increased risk of developing Hallux Valgus include; shod footwear, genetic factors, metatarsal morphology, ligamentous laxity and Pes Planus. With regards to Pes planus, it has been suggested that the loss of the medial longitudinal arch in Pes Planus increases Hallux plantar medial pressures and drives deformity during heel rise. There is little in the literature regarding whether Pes Planus is associated with increased recurrence rates. Given this is a potentially modifiable risk factor we believe the risk of recurrence should be studied. This paper reports the results of a retrospective study following up 183 consecutive Hallux valgus cases. The primary objective is to evaluate whether pes planus is associated with increased recurrence following treatment. Methods: Retrospective review of consecutively treated patients from 07/03/2008 to 05/12/2017. Patients were typically followed up for six to twelve months depending on any additional factors that require follow up. X-rays were performed routinely at six weeks, three months and many had x-rays at six and/or 12 months for additional pathology. We examined radiological markers including Sesamoid location (using the Hardy and Clapham Classification), Hallux Valgus Angle (HVA), Intermetatarsal Angle, Meary’s angle and Talonavicular uncovering. 183 cases were reviewed, 12 were excluded due to previously amputated second toes, Hallux Varus, revision surgery and only 6 weeks follow up. This left 171 cases of which 75 had Pes Planus (Meary’s angle < -4°). Results: Table 1 describes the preoperative HVAs we encountered and the correction achieved along with frequencies. Postoperative measurements were taken off weight bearing x-rays. The incidence of recurrent HVA > 15° was significantly higher in those with Meary’s angle < - 4° (Chi-Sq 22.6 P-value 0.000002). Those with a Meary’s angle -20° to -10° had a significantly higher rate of recurrence than ones measuring -10° to -4° (Chi-Sq 9.7 P-value 0.0018 There was no difference in progression of recurrent deformity between those initially corrected to HVA < 15° (Chi-Sq 0.26 P- value 0.61) and those not. Multiple regression analysis revealed there was no meaningful association with sesamoid location or pes planus with recurrence of Hallux Valgus deformity. Conclusion: Our results demonstrate a link between Preoperative Pes Planus deformity and increased recurrence rates of Hallux Valgus deformity following surgery. Consideration of correction of pes planus and appropriate consent of recurrence rates should therefore be undertaken in treatment of hallux valgus in the presence of pes planus

scholarly journals Hallux MTP Arthrodesis for Treatment of Severe Hallux Valgus Using a Dorsal Locking Plate

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0031
Author(s):  
Wonyong Lee ◽  
Cooper M. Truitt ◽  
Venkat Perumal ◽  
Joseph Park
Keyword(s):  
Hallux Valgus ◽  
Failure Rate ◽  
Locking Plate ◽  
Weight Bearing ◽  
Valgus Deformity ◽  
X Rays ◽  
Lag Screw ◽  
Screw Augmentation ◽  
Hallux Valgus Deformity ◽  
Severe Hallux Valgus

Category: Bunion Introduction/Purpose: First metatarsophalangeal (MTP) joint arthrodesis is widely accepted as a treatment option for severe hallux valgus deformities. Although successful results of first MTP joint arthrodesis for hallux valgus have been reported in previous studies, the reported rates of fusion have been lower than for the general hallux rigidus population. The purpose of this study was to demonstrate the failure rate of first MTP joint arthrodesis for severe hallux valgus deformities and to evaluate radiographic correction of hallux valgus parameters after the surgery. Methods: From January 2014 to June 2017, 34 patients underwent first MTP joint arthrodesis surgery for severe hallux valgus deformity and were included in this retrospective study. Severe hallux valgus was defined as having a hallux valgus angle (HVA) of greater than 40 degrees and an intermetatarsal angle (IMA) greater than 15 degrees. For radiographic evaluation, the patients were evaluated by measuring the IMA and HVA in preoperative and postoperative weight-bearing AP foot x-rays. We defined failure after first MTP joint arthrodesis as non-union, incomplete union, or implant breakage or migration leading to a symptomatic recurrence of hallux valgus deformity. Results: The mean preoperative IMA and HVA were 16.7 ± 4.2 degrees (range 8.4 to 26.5) and 45.2 ± 8.6 degrees (range 28.7 to 71.1) respectively, and the postoperative IMA and HVA were 11.3 ± 3.8 degrees (range 4.1 to 20.4) and 20.9 ± 11.8 degrees (range 0.4 to 51.1) respectively. The postoperative IMA and HVA were significantly improved after surgery (< 0.001). Among the 34 patients in this study, a 14.7% failure rate was reported (n=5). For fusion procedures performed without lag screw fixation, there was a 12.6-fold increase in failure risk when we used the small dorsal locking plate compared with the medium dorsal locking plate (Odds ratio = 12.571). Conclusion: First MTP joint arthrodesis is an effective and reliable option for severe hallux valgus correction. However, for this challenging cohort, the 14.7% failure rate in this study is consistent with other studies in the literature. For severe hallux valgus deformities, selection of implant may play a more significant role. The use of longer plates to gain additional purchase in the diaphyseal bone, lag screw augmentation, and utilizing flat cuts instead of cup and cone reaming to realign the joint may help mitigate the increased stresses placed on the fixation constructs for MTP arthrodesis.

scholarly journals The corrective ability of the double chevron and Akin osteotomies on medial sesamoid position in Hallux Valgus deformity

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0001
Author(s):  
Jie Chen ◽  
Eugene Stautberg ◽  
David Spak ◽  
Gregory Schneider ◽  
Vinod Panchbhavi
Keyword(s):  
Hallux Valgus ◽  
Recurrence Rate ◽  
Lateral Displacement ◽  
Weight Bearing ◽  
Valgus Deformity ◽  
Observer Agreement ◽  
P Value ◽  
Great Toe ◽  
Hallux Valgus Deformity ◽  
Akin Osteotomy

Category: Bunion Introduction/Purpose: Recurrence of hallux valgus deformity is a common post-operative complication with rates in the literature ranging from 2.7 – 30%. Lateral displacement of the great toe medial sesamoid is correlated with a high recurrence rate, and failure to reduce sesamoid position has been implicated as a risk factor for recurrence due to an uncorrected deforming force. Sesamoid position has been studied in relation with Scarf osteotomy, but not other corrective osteotomies. The goal of this study is to determine the efficacy of the double chevron and Akin osteotomy in reducing the great toe medial sesamoid. Methods: We retrospectively reviewed all patients in the last five years undergoing hallux valgus correction via the double chevron and Akin osteotomy method with pre-operative and post-operative weight bearing radiographs. We measured sesamoid position pre and post-operatively using the Hardy-Clapham (HC) scale of I-VII with V or greater representing a laterally displaced medial sesamoid. We also measured hallux valgus and inter-metatarsal angles. Measurements were made by three authors in orthopedics and one in radiology. We used intra-class correlation coefficient (ICC) to determine inter-observer agreement and establish reliability. With adequate ICC, we could consider the lead author’s measurements as representative of the group. We examined the percent of hallux valgus cases with displaced sesamoids pre-operatively. Next, we determined how many of those cases did we reduce the sesamoids to grade IV or less. Finally, we performed subgroup analysis for pre-operative HC grades V, VI, and VII to determine correction percentage by severity. Results: There were 49 patients with 53 feet treated with the double chevron and Akin osteotomies for hallux valgus correction. Of these, 39 (73.6%) had significant preoperative lateral displacement of the medial sesamoid characterized by HC grade of V or greater. We corrected 30/39 (77.0%) to a reduced position of HC grade IV or less (p-value 0.048). In sub-analysis, we achieved reduction of the medial sesamoid position in 14/14 feet (100%) with HC grade V, 6/9 feet (66.7%) with HC grade VI, and 10/16 feet (62.5%) with HC grade VII (p-value 0.037). The ICC was 0.91 for pre-operative HC scores and 0.79 for post-operative HC scores. Average pre and post-operative HVA was 29.4° and 8.7°, respectively. Average pre and post-operative IMA was 13° and 5.2° respectively. Conclusion: Our study validates the double chevron and Akin osteotomies as effective in correcting sesamoid position. We achieved correction in 30/39 (77%) cases with initial sesamoid displacement. For mild cases of displacement with HC grade V, sesamoid correction was always achieved, and we were likely to achieve correction in the more severe cases of sesamoid displacement with HC grade VI or VII as well. The technique is also effective at reducing HVA and IMA. We had acceptable inter- observer agreement which supports the reliability of our methods. Future studies should examine recurrence rate following the double chevron and Akin osteotomies prospectively.

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