scholarly journals Percutaneous Chevron Akin (PECA) Correction of Hallux Valgus Deformity: Analysis of the Learning Curve

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0040
Author(s):  
Peter W. Robinson ◽  
Robbie Ray ◽  
Paul M. Dearden ◽  
Thomas A. Goff ◽  
Michael R. Whitehouse ◽  
...  
Keyword(s):  
Learning Curve ◽  
Hallux Valgus ◽  
Pearson Correlation ◽  
Weight Bearing ◽  
Learning Phase ◽  
Plateau Phase ◽  
Tourniquet Time ◽  
Hallux Valgus Deformity ◽  
Parametric Data ◽  
Significant Difference

Category: Bunion Introduction/Purpose: Percutaneous hallux valgus correction is increasing in popularity, with good correction of deformity and improvement in outcomes. The learning curve is reported as steep, based on arbitrary analysis. Methods: We performed a prospective study of a single surgeon series on the 1st 58 feet in 53 patients undergoing PECA hallux valgus correction, following cadaveric training and surgical observation. Pre- & post-operative (6 month) hallux valgus angles (HVA) & 1-2 intermetatarsal angles (IMA) were measured on weight bearing radiographs. Tourniquet time & number of fluoroscopy images were recorded. Complications were analysed. Parametric data was described with mean+-SD & non- parametric data with median+-interquartile range. Unpaired 2-tailed t tests were used to compare continuous data. The learning curve was calculated by plotting the tourniquet time against case number using a smoothed cubic spline with straight lines fitted to the slope. This was used to define a learning phase & a plateau phase. Results: Median age was 62 (IQR 56-66). The mean HVA improved from 32°+-4.7 to 9°--+-5.9 (p<0.0001). Mean IMA improved from 16°+-3.1 to 8°+-2.3 (p<0.0001). There were 6 re-operations (ostectomy & screw removal). The learning curve inflection point was between case 38 & 39. 38 were analysed in the learning phase & the remaining 20 in the plateau phase. No significant difference between the learning and plateau phases were seen for age, pre- & post-operative HMA or IMA, difference from normal angles or return to theatre. Pearson correlation revealed that only tourniquet time (p=0.001) & number of fluoroscopy shots (p=0.019) were significantly correlated with the learning or plateau phase. Conclusion: The learning curve for the PECA hallux valgus technique is around 40 cases, reflected by tourniquet time and number of fluoroscopy shots. It does not affect radiological correction or complications, showing that if taught properly this technique is reproducible and reliable.

The Surgical Learning Curve for Modified Lapidus Procedure for Hallux Valgus Deformity

2021 ◽  
pp. 193864002110291
Author(s):  
J. Benjamin Jackson ◽  
Benjamin Kennedy ◽  
Patrick Deal ◽  
Tyler Gonzalez
Keyword(s):  
Learning Curve ◽  
Hallux Valgus ◽  
Time Frame ◽  
Valgus Deformity ◽  
New Techniques ◽  
Average Decrease ◽  
Hallux Valgus Deformity ◽  
Significant Difference ◽  
High Prevalence ◽  
Flexor Digitorum

Background Hallux valgus is one of the most common orthopaedic deformities of the foot, affecting as much as 23% of the population age 18 to 65. In addition to its high prevalence, it has a complex multifactorial pathogenesis. Surgical correction options have variable rates of success and new techniques are being developed. The modified Lapidus procedure attempts to correct in 3 planes of deformity, which may create a steeper learning curve for those newly adopting the technique. Methods A retrospective review was performed on patients who underwent hallux valgus reconstruction with a modified Lapidus procedure between March 2018 and July 2020. Exclusion criteria included revision surgery, 6 or more concurrent procedures, or a flexor digitorum longus tendon transfer for adult acquired flatfoot correction. Results There were a total of 81 modified Lapidus procedures for hallux valgus within the study time frame and 68 were included in the study. Over a period of 2 years there was a significant decrease in overall surgery duration from 78.93 minutes at month 0 to 61.80 minutes at 24 months ( P = .036). The average preoperative/postoperative intermetatarsal angles were 15.08° and 4.91°, respectively. There was an average decrease of 10.17°. The rate of nonunion was 4.41% (3/68), and the rate of recurrence at 6 months was 5.88% (4/68). There was not a significant difference in the rate of recurrence ( P = .394) or the rate of nonunion ( P = .817) as the surgeon increased in experience. Conclusion Although there is a significant learning curve for the modified Lapidus procedure, it is largely overcome by the 23rd case. Additionally, experience with the technique does not appear to affect the patient outcomes of nonunion or recurrence. Levels of Evidence Level IV: Retrospective

scholarly journals Radiographic Recurrence of Hallux Valgus Based on Osteotomy Location

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0021
Author(s):  
Andrew Federer ◽  
Travis Dekker ◽  
David Tainter ◽  
Jordan Liles ◽  
Mark Easley ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Surgical Correction ◽  
P Value ◽  
Single Individual ◽  
Hallux Valgus Angle ◽  
Intermetatarsal Angle ◽  
Valgus Angle ◽  
Significant Difference

Category: Bunion Introduction/Purpose: Hallux valgus (HV) is one of the most common deformities of the foot resulting in pain and lifestyle modification of the patient. Recurrence rates of 10-47% have been documented in single individual osteotomy series. Unfortunately, surgical correction and recurrence are often defined as changes related to normal radiographs and not actually as the magnitude of correction lost with follow-up. Currently there have not been studies evaluating the percentage of recurrence of intermetatarsal angle (IMA) and hallux valgus angle (HVA). As there is substantial difference in starting IMA and HVA, as well as amount of surgical correction, our goal was to evaluate the percentage loss of correction over time comparing preoperative, initial postoperative and minimum of 2-year follow up radiographs among three different surgical correction techniques. Methods: This is a retrospective chart review study that examines the weight-bearing radiographic measurements of patients undergoing hallux valgus corrective surgery at a single institution over 5 years. Fifty-three patients were divided into first tarsometatarsal arthrodesis (i.e. Lapidus), mid-diaphyseal osteotomies (i.e. scarf), and distal metatarsal osteotomies (i.e. chevron). The preoperative, initial postoperative, and final follow up weight-bearing radiographs were measured for intermetatarsal angle (IMA) and hallux valgus angle (HVA). Primary outcome was percentage of recurrence of IMA and HVA, with the difference in angles between preoperative and initial postoperative weight-bearing films being considered 100% correction. The percentage of recurrence between initial postoperative and most recent follow up was then calculated (Figure 1A). A one-way analysis of variance (ANOVA) test and post-hoc Tukey-Kramer tests were used to compare preoperative IMA and HVA and percentage recurrence of IMA and HVA at most recent follow up. Results: There was no significant difference between Lapidus (14.3deg) and mid-diaphyseal osteotomies (12.7deg) in preoperative IMA (p-value=0.26). There was a significant difference between Lapidus (-0.3deg) and mid-diaphyseal (2.8deg) osteotomies for degree of hallux valgus recurrence as measured by IMA between initial postoperative films and final 2-year follow up (p-value=0.009). Lapidus procedure showed a greater magnitude decrease in IMA degrees from preoperation to final follow up compared to distal osteotomy (p-value=0.037) and trended toward significance compared to mid-diaphyseal (p-value=0.056). Mid-diaphyseal osteotomies (30%) showed a statistically significant higher percentage of IMA recurrence compared to Lapidus (-11%) (p-value=0.0014) (Figure 1B). When comparing percentage recurrence of HVA, distal osteotomies had a significantly smaller rate of recurrence when compared to the diaphyseal osteotomies (p-value=0.030). Conclusion: Though Lapidus and mid-diaphyseal osteotomies were performed for patients with a similar preoperative IMA, mid-diaphyseal osteotomies had a significantly higher percentage of recurrence at 2-year follow up compared to Lapidus procedures. Moreover, Lapidus procedures trended toward greater overall of IMA correction compared to mid-diaphyseal osteotomies. When either a Lapidus or mid-diaphyseal osteotomy is indicated, a Lapidus procedure may result in decreased rate of radiographic recurrence of hallux valgus at 2 years.

scholarly journals The Effect of “High-ankle Sprain” Taping on Ankle Syndesmosis Congruity: A Cadaveric Study

2020 ◽  
Vol 13 (1) ◽  
pp. 123-128
Author(s):  
Stéphanie Lamer ◽  
Jonah Hébert-Davies ◽  
Vincent Dubé ◽  
Stéphane Leduc ◽  
Émilie Sandman ◽  
...  
Keyword(s):  
Ankle Sprain ◽  
Weight Bearing ◽  
Axial Loading ◽  
Cadaveric Study ◽  
P Value ◽  
Level Of Evidence ◽  
Parametric Data ◽  
Custom Made ◽  
Significant Difference ◽  
High Ankle Sprain

Background: Different treatment options exist for dynamically unstable purely ligamentous syndesmotic injury, including surgery, walking boot, brace and taping. Objective: The main purpose of this study was to evaluate the effect of high-ankle sprain taping (ring taping) on syndesmotic stability in various ligament conditions when axial loading is applied. Methods: This controlled cadaveric laboratory study included ten cadaveric specimens installed in a custom-made device applying 750N of axial loading in order to simulate weight-bearing. Sectioning of syndesmotic ligaments, AiTFL and IOL, was done sequentially and CT scan images were taken with and without high-ankle sprain taping. A validated measurement system consisting of 3 lengths and 1 angle was used. Results were compared with Wilcoxon tests for paired samples and non-parametric data. Results: In every ligament condition (intact vs. cut), no statistically significant difference was observed between specimens, with or without high-ankle sprain taping and with or without axial loading. When the data from ankles with AiTFL and IOL ruptures were compared, the mean for length “b” without axial loading was 7.19 (±2.17), compared to 7.20 (±1.98) with axial loading (p-value = 0.905). With taping and the leg still in axial loading, the value was 7.17 (±2.09) (p-value = 0.721), which is not statistically significant. Conclusion: It is impossible to conclude regarding high-ankle sprain taping’s capacity to maintain syndesmosis congruity because no significant difference was observed, regardless of condition. The most important finding is that high-ankle sprain taping did not cause malreduction of the injured syndesmosis. Level of Evidence: Level V cadaveric study

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 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 Foot and ankle deformities in children with Down syndrome

2018 ◽  
Vol 12 (3) ◽  
pp. 218-226 ◽  
Author(s):  
L. R. Perotti ◽  
O. Abousamra ◽  
M. del Pilar Duque Orozco ◽  
K. J. Rogers ◽  
J. P. Sees ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Down Syndrome ◽  
Hallux Valgus ◽  
Body Mass ◽  
Weight Bearing ◽  
Foot And Ankle ◽  
Children With Down Syndrome ◽  
Radiographic Measurements ◽  
Group I ◽  
Significant Difference

Purpose Foot and ankle deformities are common orthopaedic disorders in children with Down syndrome. However, radiographic measurements of the foot and ankle have not been previously reported. The aim of this study is to describe the foot and ankle deformity in children with Down syndrome. Methods Children who had foot and ankle radiographs in the standing weight-bearing position were selected. Three groups of patients were identified. The relationship of radiographic measurements with age, body mass index and pain is discussed. In all, 41 children (79 feet) had foot radiographs and 60 children (117 ankles) had ankle radiographs, with 15 children overlapping between Groups I and II. Results In Group I, hallux valgus deformity was seen before ten years of age and hallux valgus angle increased afterwards. Metatarsus adductus angle showed a significant increase (p = 0.006) with obesity and was higher in patients who had foot pain (p = 0.05). In Group II, none of the ankle measurements showed a significant difference with age or body mass index percentiles. Tibiotalar angle (TTA) and medial distal tibial angle (MDTA) were higher in patients who had ankle pain. In Group III, correlation analysis was performed between the different measurements with the strongest correlations found between TTA and MDTA. Conclusion In children with Down syndrome, radiographic evaluation of the foot and ankle reveals higher prevalence of deformities than clinical examination. However, foot and ankle radiographs are needed only for symptomatic children with pain and gait changes. Level of Evidence Level IV - Prognostic Study

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 Percutaneous Chevron Akin (Peca) Osteotomy for Treatment of Hallux Valgus Deformity: The Long- Term Results

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0007
Author(s):  
Peter W. Robinson ◽  
Robbie Ray ◽  
Thomas A. Goff ◽  
Paul M. Dearden ◽  
Clare Watt ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Patient Reported Outcome Measures ◽  
Long Term Results ◽  
Consecutive Series ◽  
Satisfaction Scale ◽  
Hallux Valgus Deformity ◽  
Patient Reported

Category: Bunion Introduction/Purpose: Little is known about the long-term results of percutaneous hallux valgus correction, particularly the recurrence rate and factors leading to recurrence. Methods: We retrospectively reviewed a single surgeon consecutive series of percutaneous chevron and akin osteotomies (PECA) performed between 2012-14 on 127 feet in 86 patients. Mean age was 52+-13 years at surgery and mean follow up (FU) was 69+-7 months. Patient reported outcome measures (PROMs) were completed by 65 patients (MOXFQ, VAS pain (0-100)) and Likert satisfaction scale by 86 patients. Pre-operative, 6 month and final follow up weight bearing radiographs were available for 68 feet. Radiological parameters measured were the hallux valgus angle (HVA) and 1-2 intermetatarsal angle (IMA). The data was normally distributed and presented as mean+-SD. Paired t-test was used to compare pre- and post-operative angles. Ordinal logistic regression was used to test for significant dependent variables on PROMs. Results: Mean MOXFQ was 10+-16 and mean VAS pain was 6+-13 out of 100 at a mean FU of 69+-7 months. 99% (85/86) patients were highly satisfied or satisfied. Mean HVA improved from 28.3+-8.1º to 8.4+-5.6º at final FU (p<0.001). No clinically relevant difference in HVA was seen between 6 months and final FU. Mean IMA improved from 12.7+-2.9º to 6.2+-2.7º at final FU (p<0.001). 2.9% (2/68) had an HVA >20º at final FU, these both started with a pre-operative HVA >40°. Pre-operative HVA >40º was significantly more likely to have an HVA >20º at final FU than those with pre-operative HVA <40º (22% vs 0%, p<0.001). There were 5 re-operations for removal of screws. 1 foot had hallux varus, but was still satisfied. Conclusion: The 5 year results for PECA hallux valgus correction show high levels of patient satisfaction, function and pain relief, with low complication and re-operation rates. Radiological correction is maintained at long term FU.

scholarly journals Effect of CAM boot immobilization on weightbearing stability in syndesmotic injuries

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0030
Author(s):  
Stéphanie Lamer ◽  
Vincent Dube ◽  
Jonah Hebert-Davies ◽  
Leduc Stephane ◽  
Jeremie Menard ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Weight Bearing ◽  
Axial Loading ◽  
Nonoperative Treatment ◽  
Ankle Injuries ◽  
Ligament Injury ◽  
Ankle Motion ◽  
Parametric Data ◽  
Custom Made ◽  
Significant Difference

Category: Trauma Introduction/Purpose: Ankle injuries are one of the most frequent traumas of the lower limb. They typically involve the lower lateral ligaments of the ankle, but the syndesmosis is also affected in up to 18% of cases. The degree of instability of syndesmotic joint depends on which ligaments are affected. Adequate management of syndesmotic injuries is crucial to avoid long term complications. The primary goal of our study was to evaluate the effect of simulated weightbearing on syndesmotic instability resulting from isolated AiTFL injury and from combined AiTFL/IOL injuries. The secondary goal was to evaluate the effect of a controlled ankle motion walking boot on syndesmosis stability following injury. We hypothesized that the CAM boot would prevent significant instability even in two ligaments injuries. Methods: Ten cadaveric specimens were dissected to expose the syndesmosis to create progressive iatrogenic syndesmosis ruptures. Uninjured syndesmoses were compared to isolated AiTFL and combined AiTFL/IOL ruptures. The specimens were fitted in a custom-made device to allow stabilization of the leg and apply a reproducible axial load (AL) of 750 N, equivalent to the weight of a 168-pound person. For each specimen and injury pattern, CT-scan images were obtained with and without AL, and with a CAM boot under AL. Distal tibio-fibular relationship was evaluated in three planes using a previously validated measurement system developed on CT. Wilcoxon tests for paired samples and non-parametric data were done to compare the different conditions. Results: For our first objective, when comparing ankles with isolated AiTFL to combined AiTFL/IOL rupture with and without AL, the only significant difference was an increase in internal rotation between the incisura and a line drawn in the axis of the fibula. Even with minimal statistical differences, it appears that axial loading does not impact syndesmotic stability apart from a slight increase in internal rotation with a single or two-ligament injury. As for our second end point, with the CAM orthopedic boot, no significant widening of the syndesmosis happened when either one or both ligaments were sectioned, in an axial loading state. We therefore confirmed our hypothesis that even with two syndesmotic ligament injuries, axial loading in a CAM boot does not affect distal tibio-fibular anatomy. Conclusion: This study reveals that weight bearing without rotational force does not affect the stability of the syndesmosis. Incomplete syndesmotic injuries can likely be treated with nonoperative treatment in a CAM boot and weight bearing as tolerated. Further clinical studies are needed to confirm these findings.

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