bluuebunny/crossref_metadata_2025_split huggingface dataset:
What is Too Swollen? Correlation of Soft Tissue Swelling and Timing to Surgery with Acute Wound Complications for Operatively-Treated Lower Extremity Fractures
Authors: Riedel Matthew D. , Parker Amber , Zheng Mingxin , Briceno Jorge , Staffa Steven J. , Miller Christopher P. , Kaiser Philip B. , Wu Jim S. , Zurakowski David , Kwon John Y. 
Published: October 2019

Category: Trauma, Soft Tissue Introduction/Purpose: Considerable debate exists regarding how soft-tissue edema should influence timing of surgery for lower extremity fractures. Assessment of swelling is subjective and timing varies amongst surgeons. However, timing of surgery is one of the few modifiable factors in fracture care. Ultrasonography can objectively measure swelling and help determine optimal timing. The purposes of this study are: 1) determine whether objective measures of swelling, timing to surgery, and patient-specific risk factors correlate with wound complications and; 2) create a prediction model for post-operative wound complications based on identified modifiable and non-modifiable risk factors. Methods: Patients with closed lower extremity fractures requiring surgery with an uninjured, contralateral extremity were included. Demographic information and sonographic measurements on both lower extremities were obtained pre-operatively. Subjects were followed for 3 months and wound complications were documented. A predictive algorithm of independent risk factors was constructed, determining wound complication risk. Results: 93 subjects completed the study with 71/93 sustaining ankle fractures. Overall wound complication rate was 18.3%. Timing to surgery showed no correlation with wound complications. A heel-pad edema index >1.4 was independently associated with wound complications. Subgroup analysis of ankle fractures demonstrated a 3.4x increase in wound complications with a heel- pad edema index >1.4. Tobacco history and BMI >25 kg/m2 were independent predictors of wound complications. An algorithm was established based on heel-pad edema index, BMI >25, and tobacco history. Patients with none of the 3 factors had a 3% probability of a wound complication. Patients with 1/3, 2/3 and 3/3 factors had a 12-36%, 60-86% and 96% probability of a wound complication, respectively. Conclusion: Timing to surgery had no correlation with wound complications. Heel-pad edema index >1.4, BMI >25, and tobacco- use correlated with wound complications. Risk of wound complications significantly increased with each factor. In patients with increased BMI and/or tobacco-use, resolution of heel edema may significantly reduce wound complications in lower extremity trauma.
Biomechanical Comparison of Plantar-To-Dorsal and Dorsal-To-Plantar Screw Fixation Strength for Subtalar Arthrodesis
Authors: Rodriguez Ramon , Dun Schouchen , He Jun Kit , McKissack Haley , Fleisig Glenn S. , Jain Mohit , Brahmbhatt Ashish , Shah Ashish 
Published: October 2019

Category: Basic Sciences/Biologics, Hindfoot Introduction/Purpose: Arthrodesis of the subtalar joint is performed for various arthritic and instability problems to correct alignment and relieve pain. For talocalcaneal pathologies, isolated subtalar arthrodesis has been advocated with the advantages of lower risk of adjacent joint arthritis and nonunion of the transverse tarsal joint. Internal fixation techniques have varied over time and use of compression screws is common. The screws may be oriented from dorsal to plantar or plantar to dorsal. Arguments favoring one approach over another are based more on “expert opinion” than hard data. The goal of this study was to compare the biomechanical stability of these two constructs to evaluate which creates a more stable construct. Methods: Eight matched pairs of cadaver feet underwent subtalar joint arthrodesis with two 7.3-mm cannulated screws. Randomization was used to assign screw orientation, such that one foot in each pair was assigned dorsal to plantar screw orientation (DP group), and the other foot plantar to dorsal orientation (PD group). Standard surgical technique with fluoroscopy was used for each approach. Following fixation, each specimen was loaded to failure with a Bionix 858 MTS device, applying a downward axial force at a distance to create torque. Torque to failure was compared between DP and PD groups using Student’s T-test, with p = 0.05 used to determine statistical significance. Results: The force to failure was 585.9 ± 201.1 N for the plantar-to-dorsal fixation and 667.2 ± 449.4 N for the dorsal-to-plantar fixation. The moment arm was 55.1 ± 4.7 mm for the dorsal-to-plantar fixation and 54.8 ± 3.9 mm for the plantar-to-dorsal fixation. Statistical analysis demonstrated that the mean torque to failure slightly favored the DP group (37.3 N-m) to the PD group (32.2 N-m). However, the difference between the two groups was not statistically significant (p = 0.55). Conclusion: There is no significant difference in strength between subtalar arthrodesis performed with dorsal-to-plantar screw orientation and plantar-to-dorsal screw orientation. This suggests that selection of technique should depend on the situation and the required advantages of each. Placing the screw from the heel up has the benefit of being an easier approach, allows access to tenser talar bone once the screw is through, and has less risk of neurovascular injury. The dorsal-to-plantar technique allows simple supine positioning of the patient, needs only two fluoroscopic views to check pin position, and allows the surgeon to manipulate the foot more easily.
The Effect of Exchanging a Mobile-Bearing into a Fixed-Bearing Total Ankle Replacement System in Patients with Coronal Plane Instability
Authors: Ruiz Roxa , Schweizer Christine , Krähenbühl Nicola , Hintermann Beat 
Published: October 2019

Category: Ankle, Ankle Arthritis Introduction/Purpose: The interface between the polyethylene (PE) inlay and the tibial component in mobile-bearing total ankle replacement (TAR) systems may allow the talus to seek its position according to the individual anatomy. However, chronic overload and/or incompetence of soft tissue may allow medial and/ or lateral translation of the talar component over time. This typically results in medial and/ or lateral gutter pain as well as pain along the syndesmosis. The purpose of this study was to assess the effect of tibial component exchange and conversion from a mobile-bearing into a fixed-bearing TAR system in patients with coronal plane instabilities TAR. Methods: A consecutive series of 30 ankles (29 patients; age 65.6 [48.9 – 86.1]; male, 23; female, 7) with coronal plane instabilities underwent revision TAR with exchange of a mobile-bearing (Hintermann Series, H3) into a fixed-bearing (Hintermann Series, H2) TAR system. Patients presented with a medial (n = 12) or lateral (n = 9) translation of the talar component, or a varus (n = 4) or valgus (n = 5) instability with subsequent tilt of the talar component. After removing the tibial component and PE inlay, a tibial osteotomy was performed and 1 to 2 mm of the distal tibia removed. A tibial component of the H2 total ankle system was inserted. While holding the foot in neutral position, the PE inlay was locked to the tibial component in the appropriate position. Functional outcome and pain were recorded to evaluate clinical outcome, and standard radiographs under fluoroscopy were taken for radiographic assessment. Results: All but one of the remaining 28 patient showed significant improvement of pain (P<0.05). Preoperative gutter pain disappeared completely in 20 ankles (71.4%), and partially in 8 ankles (18.6%). The AOFAS Hindfoot Score improved from 54.3 (range, 21 to 90) preoperatively to 74.0 (range, 48 to 92) at latest follow-up (P<0.05). Radiographic assessment showed firm osteointegration in all patients with the talar component centralized in the ankle mortise, and a free medial and lateral gutter without tilt of talar component (Figure 1). One patient with bilateral revision TAR was affected by a bilateral deep infection of both ankles 9 months after surgery subsequent to a severe pneumonia. Both ankles were removed and replaced by a cement spacer. Conclusion: Converting a mobile-bearing into a fixed-bearing TAR system has shown to be effective in the treatment of patients with coronal plane instabilities following TAR. Allowing the PE inlay to adapt its position according to the talar component before definitive fixation to the tibial component of the H2 series, saved having to replace the talar component. Future long-term studies however are needed to identify significant benefits of this novel total ankle concept in primary and revision TAR.
Early Outcomes Following Dorsal Denervation of the Midfoot for Management of Arthritic Pain
Authors: Shi Glenn G. , Kumar Arun , Williams Meredith A. , Wilke Benjamin K. , Whalen Joseph L. , Kraus Jonathan 
Published: October 2019

Category: Midfoot/Forefoot Introduction/Purpose: Debilitating midfoot arthritic pain is reported to affect up to 12% of adults over 50 years. After failure of nonoperative management, midfoot arthrodesis has been favored as the primary operative treatment producing acceptable outcomes with associated potentially long postoperative immobilization and 17% major complications rate. The aim of this study was to evaluate the pain and functional outcomes of dorsal midfoot surgical denervation by deep peroneal neurectomy as a safe alternative for management of dorsal midfoot pain. Methods: In this retrospective study, 18 patients (21 feet) who underwent dorsal denervation of the midfoot by deep peroneal neurectomy by a single surgeon were evaluated. There were 13 women and 5 men with mean age 70.4 (range, 47 to 88) at the time of surgery. Indications for the procedure include painful midfoot arthritis, lack of radiographic collapse, intact plantar protective sensation, failed nonoperative management for 6 months, and greater than 75% transient pain relief from preoperative diagnostic block of deep peroneal nerve. Preoperative and postoperative (3 months, 6 months) Visual Analog Scale (VAS), Short- Form 36 (SF-36), and Foot and Ankle Outcome Score (FAOS) were reviewed. Complications were recorded. Results: The mean VAS score improved from 7.4 +/-1.9 to 1.9 +/-1.9 at 3 months and 1.4 +/-1.9 at 6 months (p<0.001). Six patients reported being pain free (VAS=0) at 3 months. All subscales of FAOS showed significant improvement at both 3 and 6 months (Table 1). The mean SF-36 total score improved from 51.4 +/-17.9 to 72.5 +/-7.6 and 74.5 +/-7.5 at 3 and 6 months respectively (p<0.001). Available radiographs at 6 months showed no further collapse. Complications include one patient with delayed wound healing and another patient with inadequate pain relief. No patients reported symptomatic paresthesia. Conclusion: Deep peroneal neurectomy for dorsal midfoot denervation is a safe and effective alternative to arthrodesis for management of dorsal arthritic midfoot pain showing significant improvements in both pain and functional outcomes at early follow up. Our study demonstrated clinical and function outcomes similar to those previously reported for arthrodesis yet with the advantages of earlier postoperative weightbearing and lower complication rate.
Patients with History of Intravenous Drug Use (IDU) with Septic Arthritis of the Foot and Ankle Have Suboptimal Hospitalization Outcomes Compared to Patients Without IDU
Authors: Shields Margaret , Toppo Alex , Furrer Mariano Menendez , Dewire Peter , Salzler Matthew 
Published: October 2019

Category: Infection Introduction/Purpose: Although intravenous drug use (IDU) is a known risk factor for septic arthritis of the foot and ankle (F&A), little is known about its influence on hospitalization outcomes. This study evaluated differences in demographic characteristics and hospitalization outcomes of septic arthritis of the F&A according to IDU status. Methods: Using the Nationwide Inpatient Sample for the years 2000 to 2013, we identified all patients aged 15-64 with a principal discharge diagnosis of septic arthritis of the F&A. Applying previously published algorithms, septic arthritis of the F&A was classified as related or unrelated to IDU. We assessed differences in demographic characteristics and in-hospital outcomes including length of hospital stay (LOS), leaving against medical advice (AMA), hospital charges, and presence or absence of surgical intervention. Results: Of the 14,198 hospitalizations, 11% were associated with IDU. Patients with IDU were more likely to be younger, black, and have Medicaid or no insurance coverage. Patients with IDU were more likely to leave AMA (9.7% vs 1.4%, p<0.001), have longer LOS (9.2 vs 6.8 days, p<0.001), and incur increased hospital charges ($58,628 vs $38,876, p=0.005). In addition, patients with IDU were significantly less likely to receive an arthroscopy (1.5% vs 6.5%, p<0.001) or arthrotomy (2.2% vs 11.0%, p<0.001) of the foot. Conclusion: IDU-related septic arthritis of the foot and ankle is associated with suboptimal hospitalization outcomes and greater resource use. Given the disparity in outcomes, there is potential to improve outcomes of septic arthritis of the foot and ankle in patients with IDU via enhanced physician communication skills among disenfranchised patient populations and proactively addressing substance abuse issues early during hospital admission.
Comparison of Functional and MRI Outcomes of Microfracture with and without BioCartilage for Osteochondral Lesions of the Talus
Authors: Shimozono Yoshiharu , Huang Hao , Deyer Timothy , Kennedy John G 
Published: October 2019

Category: Ankle, Arthroscopy, Sports Introduction/Purpose: Microfracture (MF) remains a dominant treatment strategy for symptomatic osteochondral lesions of the talus (OLT). Micronized cartilage allograft (BioCartilage) is a biologic scaffold and is utilized for MF augmentation to improve the quality for cartilage regeneration. However, there is still lack of evidence on efficacy of BioCartilage as an adjunct to MF, as no comparative studies have been reported to date. The purpose of this study is to clarify the effectiveness of BioCartilage as an adjuvant to MF compared to MF alone in the treatment of OLT. Methods: A retrospective cohort study comparing patients treated with MF with BioCartilage and MF alone between 2014 and 2017 was undertaken. Patients with a minimum follow-up time of 12 months were included. All patients received concentrated bone marrow aspirate injection at the time of surgery. Clinical outcome was evaluated with the Foot and Ankle Outcome Score (FAOS) pre- and postoperatively. Postoperative MRIs were evaluated using a modified Magnetic Resonance Observation of Cartilage Tissue (MOCART) score. Comparisons between groups were made with the Man-Whitney U test for continuous variables and the Chi-squared test or Fisher exact test for categorical variables. Results: Twenty-four patients underwent MF with BioCartilage (MF-BC group) and 24 patients underwent MF alone (MF group). The mean age was 40.8 years in MF-BC group and 47.8 years in MF group (p=0.068). The mean follow-up time was 19.2 months in MF-BC group and 24.5 months in MF group (p=0.042). Both groups showed significant improvements in all FAOS subscales. No significant differences between groups were found in postoperative FAOS subscales including symptoms, pain, daily activities, sports activities and quality of life (MF-BC; 72.8, 77.8, 87.4, 60.8, 56.6, MF; 73.3, 79.3, 86.0, 60.9, 60.6, respectively, p>0.05). The mean MOCART score in MF-BC group was higher (73.2vs64.1), but not statistically significant (p=0.315). When assessing each MOCART parameter individually, MF-BC group had significant better infill in the defect (p=0.028). Conclusion: MF with BioCartilage is an effective treatment strategy for the treatment of OLT and results in similar functional outcomes compared with MF alone in the short-term. However, MF with BioCartilage provides better cartilage infill in the defect on MRI. This finding suggests that the repair seen in a cartilage defect treated with BioCartilage augmentation may be superior to treatment with MF alone. Further long-term follow-up studies are warranted.
Tendoscopic Groove Deepening for Subluxation or Stenosis of the Peroneal Tendons
Authors: Shimozono Yoshiharu , Kennedy John G 
Published: October 2019

Category: Ankle, Arthroscopy, Sports Introduction/Purpose: Peroneal tendon disorders frequently result in refractory posterolateral ankle and hindfoot pain which disables patients from daily activity and sports. Diagnosis can be challenging in certain cases of peroneal tendon pathology, such as subluxation and stenosis. Additionally, traditional open surgery is associated with complications including surgical scarring and injury to the sural nerve. Therefore peroneal tendoscopy has gained popularity as an effective diagnostic and treatment procedure. Recently tendoscopic groove deepening technique has been reported for the treatment of chronic subluxation or stenosing tenosynovitis of peroneal tendons. In this case series, we present the effectiveness of tendoscopic groove deepening procedure for subluxation or stenosis of the peroneal tendons. Methods: A retrospective cohort study investigating patients treated with tendoscopic groove deepening the fibular groove and concentrated bone marrow (CBMA) injection for the treatment of peroneal subluxation or stenosing peroneal tenosynovitis. Retrospective chart review was performed, and clinical outcomes were evaluated using the Foot and Ankle Outcome Scores (FAOS) and Short-Form 12 (SF-12) preoperatively and at final follow-up. Results: Twenty patients diagnosed with subluxation and/or stenosis were included. The mean age was 35.1±9.2 years and the mean follow-up time was 32.5±12.4 months. Mean symptoms, pain, daily activities, sports activities and quality of life scores in FAOS significantly improved from 56.8, 74.1, 72.3, 36.2 and 22.7 preoperatively to 86.5, 83.2, 92.3, 70.2 and 63.8 postoperatively, respectively at final follow-up (p<0.001). The mean SF-12 significantly improved from 48.7 to 75.8 postoperatively (p<0.001). No superior peroneal retinaculaum repair was perfumed in all subluxation cases. No complications were reported. Conclusion: The current study demonstrates that endoscopic groove deepening of the fibular groove was a reproducible and minimally invasive technique that provided a good clinical outcome for subluxation of the peroneal tendons and stenosing peroneal tenosynovitis.
Efficacy of a Knee Walker for Foot and Ankle Patients: Comparative Study with an Axillary Crutch
Authors: Song Jae Hwang , Kang Chan , Lee Gi Soo , Won You Gun , Kim Tae Gyun 
Published: October 2019

Category: Ankle, Orthosis, rehabilitation Introduction/Purpose: An axillary crutch is the most commonly used assistive device in foot and ankle patients who require nonweightbearing. On the other hand, its use frequently induces axillary or wrist pain and critical neurovascular injuries have been reported in several studies. Recently, knee walker was introduced, which minimized these weaknesses and yielded favorable results in some clinics. To the best of our knowledge, there have been no previous original article comparing the clinical results of the knee walker and axillary crutch in foot and ankle patients who require nonweightbearing. This study compared the clinical outcomes of patients using the knee walker and axillary crutch. Methods: A retrospective analysis was performed comparing the utility of a knee walker and axillary crutch as a nonweightbearing ambulatory aid for 62 foot and ankle patients treated between November 2016 and March 2018. A comparative study of the two orthosis could be performed because all the patients temporarily used an axillary crutch before or after the use of a knee walker. Jin Bae He Wheel Chair X 01 (JBH Medical Apparatus, Nanjing, China) was used for the knee walker and standard axillary crutch was used. A demographic study and comparative analysis based on the visual analogue scale (VAS) satisfaction score (0˜100), complications, and fall down history were evaluated. Furthermore, under the assumption of having retreatment, their preference of orthosis between the knee walker and axillary crutch was investigated. Results: The mean age of the patients was 36.5 and the mean duration of ambulation with a knee walker and axillary crutch were 5.2 and 2.4 weeks. The VAS satisfaction score of the knee walker and crutch was 88.8 and 27.5, respectively (p<0.05). The most frequent complications of the knee walker and crutch were ipsilateral knee pain (6 cases) and axillary or wrist pain (56 cases), respectively. No case of falling down occurred during knee walker ambulation, but there were two cases of crutch ambulation. Fifty-eight patients (93.5%) preferred the knee walker and four patients (6.5%) preferred a crutch. Conclusion: Compared to the axillary crutch, the knee walker afforded lower complication and higher satisfaction. Most patients preferred the knee walker to a crutch. Therefore, the knee walker is an efficient and safe orthosis for foot and ankle patients who require nonweightbearing.
The Ponseti Method in Children with Clubfoot after Walking Age: Systematic Review and Metanalysis
Authors: Stéfani Kelly Cristina , Haje Davi de Podestá , Nogueira Monica Paschoal 
Published: October 2019

Category: Clubfoot Introduction/Purpose: The prevalence of untreated congenital clubfoot among children older than walking age is higher in developing countries due to limited resources for early care after birth. The Ponseti method represents an intervention option for older, untreated children. Methods: A metanalysis was conducted of observational studies selected through a systematic review of articles included in electronic databases (Medline, Scopus, Embase, Lilacs, and the Cochrane Library) until June 2017. A pooling analysis of proportions with 95% confidence intervals (CIs) and a publication bias assessment were performed as routine. Estimates of success, recurrence, and complication rates were weighted and pooled using the random effects model. Results: Twelve studies, including 654 feet diagnosed with congenital clubfoot in children older than walking age (older than 1 year old), were included for analysis. The rate of satisfactory outcomes found via a cluster metanalysis of proportions using the random effects model was 89% (95% CI = 0.82–0.94, p < 0.01), relative to the total analysed. The recurrence rate was 18% (95% CI = 0.14–0.24, p = 0.015), and the rate of casting complications was 7% (95% CI = 0.03–0.15, p = 0.19). Conclusion: Application of the Ponseti method in children with untreated idiopathic clubfoot older than walking age leads to satisfactory outcomes, has a low cost, and avoids surgical procedures likely to cause complications. The results obtained exhibited considerable heterogeneity.