Inaccuracy of Forefoot Axial Radiographs in Determining the Coronal Plane Angle of Sesamoid Rotation in Adult Hallux Valgus Deformity. A Study using Weight-Bearing CT Scanning

2020 ◽  
Author(s):  
Jill S Kawalec ◽  
Duane J Ehredt Jr ◽  
Kiarash Bakhaj ◽  
Joseph Fleck ◽  
Kelsi Nutter ◽  
...  
Keyword(s):  
High Reliability ◽  
Weight Bearing ◽  
Ct Scanning ◽  
Valgus Deformity ◽  
Assessment Method ◽  
Coronal Plane ◽  
Hallux Valgus Deformity ◽  
Plane Component ◽  
Axial Radiograph ◽  
The Mean

BACKGROUND:Hallux abducto valgus (HAV) is a triplane deformity with recent attention given to the significance of correcting the coronal plane component. This study explored the accuracy of the forefoot axial study as a standard radiographic assessment method compared to weight-bearing CT scanning.METHODS:Twelve feet with HAV from 12 subjects were included in this study. Three images of the affected foot were taken: 1) forefoot axial radiograph (FFA), 2) weight-bearing CT scan with the foot in a position of a) maximum pronation (Pronated CT) and b) maximum supination (Supinated CT). Five investigators (three faculty members and two podiatric16 medical students) determined the sesamoid rotation angle (SRA) from each of the images. The measurements from a single investigator were used to compare the SRA means from each of the image types, while those from all five investigators were used to determine reliability.RESULTS:The mean SRA for the pronated CT position was 22.1 {plus minus} 7.6 degrees, while that for the supinated CT image was 10.5 {plus minus} 5.0 degrees. In comparison, the mean SRA determined from the FFA image was 12.2 {plus minus} 9.4 degrees. The mean SRA from the Pronated CT was significantly greater than both the Supinated CT (p<0.001) and the FFA SRA (p<0.005). There were no significant differences in mean SRA between the FFA and Supinated CT images (p=1.000). Results indicated a high reliability in measurements between investigators.CONCLUSIONS:Using weight-bearing CT, the findings of this study indicate that the sesamoids significantly alter their position in the coronal plane, as determined by the SRA, with changes in weight-bearing subtalar joint position. Moreover, the affected foot positioning required for determining the SRA from the forefoot axial radiograph appears to significantly underestimate the true SRA value. Thus, the use of this image in surgical HAV planning is called into question.

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 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 2019 IFFAS Award for Excellence Winner: Peri-Prosthetic Cysts and Alignment in Total Ankle Replacement: A 3-D, Weight Bearing Topographical Study

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0004
Author(s):  
Francois Lintz ◽  
Jef Mast ◽  
Nazim Mehdi ◽  
Alessio Bernasconi ◽  
Cesar de Cesar Netto ◽  
...  
Keyword(s):  
Weight Bearing ◽  
Total Ankle Replacement ◽  
Coronal Plane ◽  
Unequal Distribution ◽  
Hindfoot Alignment ◽  
Cyst Volume ◽  
Ankle Replacement ◽  
The Mean ◽  
The Difference

Category: Ankle, Ankle Arthritis Introduction/Purpose: Peri-prosthetic cysts (PPC) in Total Ankle Replacement (TAR) are a common failure cause but the mechanisms of their development remains unclear. One possible explanation could be hindfoot malalignment and subsequent unequal distribution of load inside the joint. However, how residual malalignment influences the evolution of PPC remains unclear. Computed tomography (CT) has demonstrated superiority on conventional radiography in the follow up of PPC. Weight Bearing CT (WBCT), by combining 3D imaging and weight bearing measurements seems a valid tool to investigate this further. The objective for this work was to study the effects of residual hindfoot deformity on the distribution of PPC in the coronal plane. We hypothesized that cysts would be found predominantly medially in varus configuration, and laterally in valgus configuration. Methods: Retrospective comparative study, ethics committee approved. Forty-eight cases of TAR were included, with relevant demographics. Inclusion criteria were cases of primary TAR with available WBCT imaging of their ankle as part of normal follow up. Exclusion criteria were subsequent implant revision or cyst grafting. In each case, the localization and size of PPC’s were documented and their volume calculated by approximation of the closest ellipsoid. Hindfoot alignment was evaluated by the percentage Foot Ankle Offset (FAO) (foot-length normalized 3D ratio between the midline of the foot and the center of the ankle) using a WBCT dedicated semi-automatic software. The mean FAO value with 95%CI for the population was calculated. The difference in medial and lateral cyst volume defined by their position relative to the median axis in the coronal plane was compared in varus and valgus cases by a Mann-Whitney non-parametric test for unpaired samples. Results: Demographic distributions of the series were 32% female, mean age 65 (45-85) years. Mean FAO value was 0.12% (95%CI -1.09 to 1.33). Mean follow up was 43 months (6 to 239). The mean total cyst volume per case was 1190,7 mm3. In varus cases (defined by FAO<-1.09%), the volume of medial cysts was greater than laterally by a mean 197 mm3, whereas in valgus cases (defined by FAO>1.33%), the volume of lateral cysts was greater than medially by a mean 332 mm3. The difference was statistically significant (p<0.05). There was a weak, significant positive correlation (r=0.25, p<0,001) between FAO and total cyst volume and a moderate, significant correlation (r=0,56, p<0,001) between time to follow up and total cyst volume. Conclusion: Our hypothesis was confirmed. Periprosthetic cysts volume in this series of primary TAR was found to be relatively greater medially in postoperative varus configurations and vice-versa laterally in valgus. This confirms a possible correlation between the direction of residual hindfoot malalignment and the coronal localization of PPC in TAR, although this is certainly not the only pathophysiologic factor involved in PPC onset. Weightbearing CT may be helpful in Total Ankle Replacement follow up, in order to early detect PPC development and possibly to identify situations at risk of a more rapid evolution.

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 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 Correction of Valgus Lesser Toes by Percutaneous Closing Wedge Osteotomy of the Proximal Phalanx

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0039
Author(s):  
Robbie Ray ◽  
Peter W. Robinson ◽  
Paul M. Dearden ◽  
Thomas A. Goff ◽  
Peter Lam ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Weight Bearing ◽  
Proximal Phalanx ◽  
Valgus Deformity ◽  
Coronal Plane ◽  
Wound Complications ◽  
Wedge Osteotomy ◽  
Continuous Variables ◽  
Closing Wedge Osteotomy ◽  
Closing Wedge

Category: Lesser Toes; Bunion Introduction/Purpose: Deformities of the lesser toes are usually described in the sagittal plane. Coronal plane deviation is also common, yet there is a paucity of literature on the management of these challenging deformities. Traditional soft tissue procedures and translational Weil osteotomies are unpredictable and can lead to post-operative stiffness. We present the results of a novel percutaneous osteotomy of the proximal phalanx to treat valgus deformity of the 2nd toe. Methods: 29 patients underwent 38 osteotomies at a mean age of 59+/-9 years. Through a 2mm dorsomedial incision, a percutaneous proximal metaphyseal medial closing wedge osteotomy is performed using a low speed, high torque 2x8mm burr. The toe is then taped for 2 weeks. Mean follow up was 29+/-18 months. Post-operative weight bearing radiographs were performed at a mean of 27+/-18 months. Dichotomous variables were assessed using a Chi square test. After confirming normality using a Kolomgrov-Smirnov test, continuous variables were measured using paired and independent t-tests. Results: 90% (n=26) patients responded. 88% (n=23) patients were satisfied or extremely satisfied with the procedure. 24% reported a partial (n=4) or complete recurrence (n=2) of deformity. Patients who perceived recurrence were significantly more likely to be dissatisfied (p=0.001). Radiographs were available for 27/38 osteotomies. Mean valgus angle decreased from 21+/-10° to 9+/-8° (p=0.001). All osteotomies united with no delayed union. There were no wound complications or infections. 2 patients reported long term numbness in the toe and 1 patient complained of a floating toe. Conclusion: Percutaneous closing wedge osteotomies to correct (valgus)coronal plane deformity is technically straight forward with a low complication rate and high patient satisfaction. Future studies should assess the role of this technique to correct medial crossover deformities and compare outcomes with other techniques.

A Cadaveric Anatomical Study of the Relationship between Proximal Tibial Slope and Coronal Plane Deformity

2021 ◽  
Author(s):  
Julia Foos ◽  
Kouami Amakoutou ◽  
Daniel R. Cooperman ◽  
Raymond W. Liu
Keyword(s):  
Regression Analysis ◽  
Sagittal Plane ◽  
Anatomical Study ◽  
Tibial Slope ◽  
Valgus Deformity ◽  
Coronal Plane ◽  
Bottom Surface ◽  
Plane Deformity ◽  
The Mean ◽  
Lateral Plateau

AbstractMedial proximal tibial angle (MPTA) and posterior proximal tibial angle (PPTA) are commonly used to characterize the geometry of proximal tibia and are important considerations in lower extremity realignment procedures and total knee arthroplasty. This study utilized a large cadaveric collection to explore relationships between tibial slope and coronal plane deformity of the tibia. We utilized 462 well-preserved skeletons (924 tibiae), excluding any with fracture or obvious rheumatologic or infectious findings. Custom cards were made with different sized arcs on the bottom surface, so that they could rest on the anterior and posterior aspects of the medial and lateral tibial plateaus of each bone to measure PPTA. Previously measured MPTA values for the same bones were also utilized. Multiple regression analysis was used to determine relationship between MPTA and medial and lateral PPTAs. The mean age was 56 ± 10 years, with 13% female and 31% African American (remainder Caucasian). The mean MPTA was 87.2 ± 2.4 degrees. The mean medial plateau PPTA was 81.5 ± 3.8 degrees and mean lateral plateau PPTA was 81.3 ± 3.7 degrees. Regression analysis found that MPTA was significantly associated with both medial and lateral PPTAs (standardized betas 0.197 and 0.146, respectively, p < 0.0005 for both). There was a significant correlation between lateral and medial PPTAs (r = 0.435, p = 0.03). The clinical significance of these findings warrants further investigation and emphasizes the importance of carefully assessing the sagittal plane when planning reconstruction of a tibia with varus or valgus deformity, particularly high tibial osteotomies.

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