bluuebunny/crossref_metadata_2025_split huggingface dataset:
Is there an Association between Psychological Factors and Developing Complex Regional Pain Syndrome after an Ankle Fracture?
Authors: Alluri Ram , Bouz Gabriel , Foster Brock , Wang Christopher , Marecek Geoffrey , Tan Eric 
Published: September 2017

Category: Ankle, Trauma, Mental Health Introduction/Purpose: Recognizing psychological risk factors for developing Complex Regional Pain Syndrome (CRPS) may facilitate the diagnosis of CRPS and can be critical in its prevention and treatment. The purpose of this study was to evaluate the association between psychological dysfunction and developing CRPS after sustaining an ankle fracture. Methods: The PearlDiver patient record database was used to identify patients who sustained an ankle fracture between 2005 and 2015. These patients were screened for development of CRPS based on the presence or absence of psychological disorders including anxiety disorder, bipolar disorder, delirium, psychosis, depression, chronic pain syndrome, and fibromyalgia. A substratification analysis was performed assessing the additional risk of developing CRPS by undergoing operative versus nonoperative management. Results: 163,529 patients were identified who sustained an ankle fracture and CRPS was identified in 10,127 (6.2%) of these patients. The risk of developing CRPS after sustaining an ankle fracture was significantly elevated with an OR of 5.44 (P<0.001) in patients with a psychological disorder. The psychological disorders that were most predictive of developing CRPS included delirium (OR 5.60, P<0.001), bipolar disorder (OR 5.64, P<0.001), and anxiety disorder (OR 5.08, P<0.001) (Table I). The OR for developing CRPS in patients with a psychological disorder was 5.57 (P<0.001) for patients who received operative treatment and 5.30 (P<0.001) for patients who received closed treatment. There was no additional risk (OR 0.98, P= 0.31) for developing CRPS in patients with a psychological disorder who underwent operative management. Conclusion: Patients with a known psychological disorder were five times more likely to develop CRPS after sustaining an ankle fracture. There was no additional risk due to operative management. This information may be useful in the diagnosis and treatment of patients with mental health disorders who sustain an ankle fracture and subsequently develop CRPS.
Topographic Pain Mapping versus Radiological Inter-observer Variation in Ankle Arthritis
Authors: Ashton Fiona , Ramaskandhan Jayasree Ramas , Farrier Adam , Siddique Malik 
Published: September 2017

Category: Ankle, Ankle Arthritis Introduction/Purpose: Topographic pain mapping has gained popularity during 20th century, providing opportunities for patients to demonstrate spatial distribution of pain. Despite this, evidence of clinical application in orthopaedics remains largely limited to spinal pathologies. We investigate how clinician interpretation of routine radiological studies compares to patient pain mapping in ankle arthritis. Methods: Between 2014 and 2016 we identified 21 patients ultimately diagnosed with ankle arthritis, who underwent comprehensive gait analysis (including topographic pain mapping) on referral to our institution. Patients were requested to map up to three pain areas, assigning a visual analogue score (VAS) of 0-10, to signify severity of pain in each area. A consultant orthopaedic foot and ankle surgeon, and orthopaedic trainees undertook blinded evaluation of relevant radiological studies, estimating patients’ mapping and VAS scores on the basis of radiological pathology. For the purpose of analysis findings were applied to five distinct regions around the ankle: three anterior (antero-medial; central; and antero-lateral), lateral and medial. Results were correlated between the different assessors, as well as to the patients’ pain mapping, using Spearman’s Rho & Kendall Tau correlation statistics, significance taken as p=<0.05. Results: There is a strong radiological inter-observer correlation for anterior ankle pain in ankle arthritis [Antero-lateral 0.751(p=0.012); Central 0.912(p=<0.001)]. These findings also correlate well with patient pain mapping [Central consultant-patient 0.920(p=<0.001); trainee-patient 0.982(p=<0.001)]. Assessment of medial (tibialis posterior) and lateral (subtalar/peroneal) pathology demonstrates poorer inter-observer correlations (p>0.05). Correlation to patient pain mapping was even poorer, with radiological assessment consistently over- estimating symptom severity (p=>0.05). Conclusion: There is a statistically strong correlation between topographic pain mapping and radiological evaluation of ankle arthritis. We strongly recommend that additional pathology around the ankle is excluded by use of pre-operative MRI imaging prior to surgery for ankle arthritis. Pain from ankle arthritis appears to mask additional soft tissue pathology surrounding the ankle noted on MRI scan.
Outcomes Following Surgical Treatment of Hallux Valgus Deformity
Authors: Barg Alexej , Saltzman Charles 
Published: September 2017

Category: Bunion Introduction/Purpose: Hallux valgus (HV) deformity is one of the most common chronic disorders. Surgical correction plays a central role in the treatment of painful HV deformity with over 100 different surgical techniques described in the current literature. In this report we performed a systematic literature review on studies that addressed clinical outcomes following surgical treatment of hallux valgus. The objectives of our study were to (1) describe available study characteristics on surgical HV deformity treatment; (2) determine patients’ postoperative satisfaction including postoperative pain and recurrence of HV deformity; (3) determine rate of postoperative complications by surgery type; and (4) analyze the relationship between radiographic HV deformity parameters and postoperative complication rate. Methods: We reviewed the literature using common data bases. All searches were unlimited. Study demographics were collected and analyzed. Gender distribution was estimated using an inverse-variance weighting method and patient age and follow-up time were summarized using a simple weighted average due to an absence of reporting variance in the majority of studies. A chi- squared Q test, or heterogeneity test, was used to test for differences across surgery types for patient dissatisfaction, deformity recurrence, removal of hardware, reoperation, nonunion, hallux varus, nerve injury, infection, metatarsalgia, and VAS>5. Outcome estimates and 95% confidence intervals (CIs) for each surgery type were pooled across studies using the inverse-variance weighting method. A random effects model was used when study variance was estimated using the DerSimonian-Laird method. Results: In total, 269 studies with 13,112 patients and 16,594 feet were included. Patients treated by simple buniectomy had the highest dissatisfaction rate with 25.5% (95%CI 17.5-35.6). Deformity recurrence was highest in patients treated by proximal osteotomy with 10.5% (95%CI 5.6-18.7). The highest rate of secondary surgery was in patients treated by simple buniectomy with 6.1% (95%CI 2.4-14.7). In the same patient group the highest rate of hallux varus deformity was observed with 9.1% (95%CI 2.9- 24.9). Patients treated by hemi-joint resection had the highest rate of postoperative metatarsalgia with 16.2% (95%CI 11.3-22.8) and persisting pain VAS>5 with 6.5% (95%CI 3.3-12.3). Conclusion: Patients with buniectomy and hemi-joint resection demonstrated the highest rates of postoperative complications including dissatisfaction, need for secondary surgery, postoperative metatarsalgia, and persisting pain.
What Factors Are Predictive of Outcome in the Treatment of Soft Tissue Sarcomas of the Foot and Ankle?
Authors: Beahrs Taylor , Turner Norman , Wyles Cody 
Published: September 2017

Category: Tumor Introduction/Purpose: Soft tissue sarcomas (STS) of the foot and ankle are common, accounting for 10% of sarcomas; however, there exists little published data on the outcome of treatment. Because of the unique anatomy of the foot and ankle, and the fact that benign lesions in this area are 200-fold more common than malignant lesions, these tumors can be frequently misdiagnosed, leading to unplanned excision and poor outcomes. The purpose of this study was to describe outcomes of the surgical treatment of STS of the foot and ankle at our institution, with an analysis on risk factors for local and distant recurrence, as well as overall survival. Methods: We reviewed the records of 62 foot and ankle soft tissue sarcomas treated with definitive surgery at our institution between 1992 and 2013. The cohort consisted of 35 males and 27 females with a mean age at diagnosis of 45 years and a mean follow-up of 7 years. Age, gender, anatomic location, tumor size, subtype, stage, neoadjuvant and adjuvant treatments, previous surgery, surgical procedure, and disease status at latest follow-up was recorded. Results: The most common tumor subtype was synovial sarcoma (n = 16). The overall limb salvage rate was 53%. Local recurrence was observed in 9 patients and distant metastases in 15 patients. Tumor size >=3 cm in maximal dimension was the greatest risk factor in mortality. Post treatment complications occurred in 15 patients. Local recurrence and development of distant disease was relatively common following wide excision of a soft tissue sarcoma of the foot and ankle. Tumors that were >=3 cm in maximal dimension were associated with a worse overall survival and patients with neoadjuvant radiation were at increased risk of complications. Conclusion: The results of our study highlight the aggressive nature of soft tissue sarcomas of the foot and ankle, with smaller tumors than previously reported (<5 cm) behaving like high-grade advanced disease.
Total Ankle Arthroplasty
Authors: Beck David , Raikin Steven , Pedowitz David , Padegimas Eric 
Published: September 2017

Category: Ankle, Ankle Arthritis Introduction/Purpose: The number of total ankle arthroplasties (TAA) performed in the United States has risen significantly in recent years. Additionally, utilization of an orthopaedic specialty hospital (OSH) to treat healthy patients undergoing elective surgery is becoming more common. The effect of OSH utilization on post-operative outcomes following TAA has yet to be investigated. The purpose of this study is to compare post-operative outcomes following TAA at an OSH when compared to a matching population of patients undergoing TAA at an academic teaching hospital (ATH). Methods: We identified all primary, atraumatic TAA from January 2014 to December 2014 at the OSH and January 2010 to January 2016 at the ATH. Each OSH patient was manually matched to a corresponding ATH patient by clinical variables (age adjusted Charlson comorbidity index [AACCI], 17 individual comorbidity categories, and body mass index [BMI] and demographic variable (age, gender, and insurance type). Matching was performed in a blinded fashion to outcomes. Outcomes analyzed were LOS, 30-day readmissions, mortality, reoperation, and inpatient rehabilitation utilization. Results: There were 40 TAA patients in each group. OSH and ATH patients were similar in age (66.7 versus 66.8 yo, p=0.95), BMI (both 28.4, p=1.00), age-adjusted Charlson Comorbidity Index (both 3.3, p=1.00), and gender (both 45.0% male, p=1.00). Average LOS for TAA at the OSH was 1.28+/-0.51 compared to 2.03+/-0.89 (p<0.001) at the ATH. No OSH patients were readmitted within 30 days, compared to 2 ATH (5.0%; p=0.15). Two OSH patients (5.0%) and two ATH patients (5.0%; p=1.00) required reoperation. There were no mortalities in either group. No OSH patients utilized inpatient rehabilitation compared to 3 ATH patients (7.5%; p=0.078). When excluding patients utilizing inpatient rehabilitation, patients at the OSH still demonstrated significantly lower LOS (1.28+/-0.51 vs 1.81+/-0.69 days; p<0.001). No OSH patients required transfer. Conclusion: Primary TAA performed at an OSH had significantly shorter LOS when compared to a matched patient treated at an ATH with no significant difference in readmission or reoperation rates. Additionally, patients who had their procedure performed at an OSH utilized inpatient rehabilitation less frequently than those at an ATH. This study suggests that performing TAA at an OSH offers a potential source of significant healthcare savings.
Invisible Injuries in Ankle Fractures
Authors: Blom Robin , Knupp Markus , Hintermann Beat , Stufkens Sjoerd 
Published: September 2017

Category: Ankle, Trauma, Biomechanical Introduction/Purpose: Ankle fractures are often associated with ligamentous injuries of the distal tibiofibular syndesmosis, the deltoid ligament and are predictive of ankle instability, early joint degeneration and long-term ankle dysfunction. Detection of ligamentous injuries and the need for treatment remain subject of ongoing debate. In the classic article of Boden it was made clear that injuries of the syndesmotic ligaments were of no importance in the absence of a deltoid ligament rupture. Even in the presence of a deltoid ligament rupture, the interosseous membrane withstood lateralization of the fibula in fractures up to 4.5 mm above the ankle joint. Generally, syndesmotic ligamentous injuries are treated operatively by temporary fixation performed with positioning screws. But do syndesmotic injuries need to be treated operatively at all? Methods: The purpose of this biomechanical cadaveric study was to investigate the relative movements of the tibia and fibula, under normal physiological conditions and after sequential sectioning of the syndesmotic ligaments. Ten fresh-frozen below-knee human cadaveric specimens were tested under normal physiological loading conditions. Axial loads of 50 Newton (N) and 700 N were provided in an intact state and after sequential sectioning of the following ligaments: anterior-inferior tibiofibular (AITFL), posterior-inferior tibiofibular (PITFL), interosseous (IOL), and whole deltoid (DL). In each condition the specimens were tested in neutral position, 10 degrees of dorsiflexion, 30 degrees of plantar flexion, 10 degrees of inversion, 5 degrees of eversion, and externally rotated up to 10 Nm torque. Finally, after sectioning of the deltoid ligament, we triangulated Boden’s classic findings with modern instruments. We hypothesized that only after sectioning of the deltoid ligament; the lateralization of the talus will push the fibula away from the tibia. Results: During dorsiflexion and external rotation the ankle syndesmosis widened, and the fibula externally rotated after sequential sectioning of the syndesmotic ligaments. After the AITFL was sectioned the fibula starts rotating externally. However, the external rotation of the fibula significantly reduced when the external rotation torque was combined with axial loading up to 700 N as compared to the external rotation torque alone. The most relative moments between the tibia and fibula were observed after the deltoid ligament was sectioned. Conclusion: Significant increases in movements of the fibula relative to the tibia occur when an external rotation torque is provided. However, axial pressure seemed to limit external rotation because of the bony congruence of the tibiotalar surface. The AITFL is necessary to prevent the fibula to rotate externally when the foot is rotating externally. The deltoid ligament is the main stabilizer of the ankle mortise.
Phalangeal Osteotomy…To Perform or Not to Perform
Authors: Chambers Monique , Hogan MaCalus , LaBaze Dukens 
Published: September 2017

Category: Bunion Introduction/Purpose: As the hallux valgus deformity progresses, patients can get mild to moderate arthritis of the metatarsophalangeal (MTP) joint. The degenerative process of MTP arthritis results in reactive tissue formation and proliferation of osseous and cartilaginous structures. For some patients, the results in dorsal bone spurs and pain with great toe dorsiflexion of irritation from shoes. Reconstructive procedures provide a surgical option for patients to address pain and functional limitations, prior to subchondral bone cyst formation and loss of joint space. Patients who underwent cheilectomy alone have been shown to have a high failure rate and progress to advanced disease. A phalangeal dorsiflexion osteotomy has become increasingly more popular amongst foot and ankle surgeons with the hopes of decreasing failure rate and improving early outcomes. Methods: This study was a retrospective review of prospectively collected data from 385 patients treated for hallux rigidus at a large academic medical center between July 2015 and November 2016. All patients underwent either a cheilectomy or cheilectomy with phalangeal osteotomy of the MTP joint. Collected patient reported outcomes (PROs) included in this study were SF12 M, SF12P, FAAM, VAS and PASS scores. Mann-Whitney t-test was performed using GraphPad Prism version 7.0b for Mac to compare procedure groups. Exclusion criteria included poly-trauma, revision of same procedure, and lack of pre or post- operative. Results: Eighteen patients met criteria, 8 underwent cheilectomy and 10 had a cheilectomy with osteotomy procedure. The average age was 51.9 amongst the cohort, with a total of 13 female and 5 males. Patients who underwent cheilectomy with osteotomy procedure had better outcomes across all outcome measure scores. When comparing postoperative scores, cheilectomy with osteotomy patients showed significantly higher scores compared to cheilectomy alone patients: SF12-M (56 vs 36, respectively; p=0.0333), and SF12P (52 vs 30, respectively p=0.0095). VAS scores and FAAM scores showed no statistical difference between the two cohorts. Despite surgical intervention, 50% of patients who received cheilectomy alone reported more pain post-operatively compared to no reports of worsening pain in patients who received cheilectomy with osteotomy. Conclusion: Patients with moderate to severe hallux rigidus demonstrate improved functional outcomes with phalangeal osteotomy in conjunction with cheilectomy compared to cheilectomy alone. Further research with larger cohorts would be beneficial to confirm the reports of this study and expand upon aspects of care that contribute to patient satisfaction and performance.
Intermediated-term Results of Salvage Procedure using Tibiocalcaneal Fusion and Strut-fibular Graft for Ankle Arthropathy with Severe Bone Defect
Authors: Cho Byung-Ki , Choi Seung-Myung 
Published: September 2017

Category: Ankle Arthritis, Diabetes Introduction/Purpose: Severe bone defect around the ankle joint is a challenging problem in salvage operation. It has been considered as one of major factors leading to the failed fusion, because it can be difficult to make the rigid internal fixation and the compact bone filling. This retrospective study was performed to evaluate the clinical outcomes of the tibiocalcaneal fusion combined with strut-fibular graft as a salvage procedure for end-stage ankle arthropathy with severe bone defect. Methods: Twenty-eight patients were followed for more than 3 years after tibiocalcaneal fusion using the locking compression intramedullary(IM) nail and strut-fibular graft. The mean age was 57.6 years, and the mean follow-up period was 4.2 years. The clinical evaluation consisted of the American Orthopaedic Foot and Ankle Society(AOFAS) scores, Foot and Ankle Ability Measure(FAAM) score. The subjective satisfaction score, postoperative complications, and the reoperation rate were evaluated. As the radiographic evaluation, the period to fusion, the degree of shortening compared with contralateral limb, and the degenerative change on adjacent joints were analysed. Results: AOFAS score significantly improved from preoperative average 28.8 points to 80.4 points at final follow-up (p<0.001). FAAM score had significantly improved from preoperative average 33.5 points (daily activity), 15.4 points (sports activity) to 79.8 points, 68.4 points at final follow-up (p<0.001). The period to fusion were average 18.2 weeks (tibia-fibular graft) and 19.5 weeks (calcaneus-fibular graft), respectively. 26 patients (92.8%) except for 2 patients achieved complete fusion. The degree of limb shortening was maintained from preoperative average 12.8 mm to 14.5 mm at final follow-up (p=0.236). There were 3 cases of postoperative wound infection, 3 cases of superficial peroneal nerve injury, 4 cases of metal irritation, 3 cases of degenerative changes on adjacent joint, and 2 cases of reoperation following the failed fusion. Conclusion: Tibiocalcaneal fusion using the locking compression IM nail and strut-fibular graft appear to be an effective salvage procedure for end-stage ankle arthropathy with severe bone defect. Although longer operation time and more postoperative complications have happened as compared to the cancellous bone graft alone, this surgical technique can contribute to the pain relief and improvement of gait ability through a satisfactory fusion rate and minimization of limb shortening.
Effectiveness of the Plantar Aponeurosis Release for Limitation of the First Metatarsophalangeal Joint Extension after Hallux Valgus Surgery
Authors: Choi Hongjoon , Kim Daewook , Kang Yeong Hun , Park Jong Ho 
Published: September 2017

Category: Midfoot/Forefoot Introduction/Purpose: Even though stiffness of the first metatarsophalangeal joint (1MTP) is not a common complication, reduced dorsiflexion range of motion at the 1MTP after surgery for hallux valgus was reported as a complication. However, few clinical studies have investigated this issue and no clinical resolution has been reached thus far. We hypothesized that tightness of the gastrocnemius-plantar aponeurosis complex is one of the factors that limits the extension of 1MTP after hallux valgus surgery. Thus, an additional procedure of the plantar aponeurosis release during hallux valgus surgery may improve the range of extension at 1MTP. The purpose of this study was to test the efficacy of plantar aponeurosis release in improving the range of extension when a limitation is detected after hallux valgus surgery. Methods: Thirteen patients (17 feet) with limited 1MTP extension after hallux valgus surgery, underwent an additional procedure of plantar aponeurosis release. The inclusion criterion was limitation of 1MTP extension showed more than 15 degrees difference between knee extension and flexion position, measured after completing all procedures of the hallux valgus surgery. The passive range of 1MTP extension was evaluated by a goniometer while the first metatarsal head was supported with a palm, assuming a weightbearing position with knee extension and flexion, after completing all procedures of the hallux valgus surgery (Barouk test). A silfverskiold test was performed in all cases preoperatively. The weightbearing dorsoplantar and lateral radiographs of the foot were performed to measure the hallux valgus angle, intermetatarsal angle, distal metatarsal articular angle, and the talo-first metatarsal angle. Results: The mean range of 1MTP extension significantly improved from 2.53 degrees to 40.88 degrees in the knee extension position (p<0.0000). The mean range of the 1MTP extension also improved from 18.24 degrees to 43.24 degrees in the knee flexion position. The silfverskiold test was positive in 12 cases. In all patients, congruence of 1MTP was corrected. There were no surgery-related complications such as plantar aponeurosis rupture or nerve injury. Conclusion: Our study supports tightness of the gastrocnemius-plantar aponeurosis complex is one of the factors that limit the extension of 1MTP after hallux valgus surgery. Hence, plantar aponeurosis release can be considered as an effective additional procedure to improve the range of 1MTP extension when a limitation is presented after hallux valgus surgery.