A Novel Plating System for First Metatarsophalangeal Joint Arthrodesis: A Retrospective Comparison of Hybrid and Traditional Locking Plate Constructs

Background Dorsal plate fixation is commonly used for first metatarsophalangeal joint (1st MTPJ) arthrodesis and plate design continues to evolve. A new staple compression plate (SCP) design attempts to utilize the continuous compression of a nitinol staple across the fusion site while simultaneously providing the stability of a dorsal locked plate. Herein, we compare the radiographic, clinical, and patient-reported outcomes of 1st MTPJ joint arthrodesis using 2 dorsal locking plate constructs including a novel SCP construct. Methods Forty-four patients who underwent 1st MTPJ arthrodesis between 2016 and 2020 were retrospectively evaluated. There were 2 group cohorts. Group 1 cohort included 23 patients who received a CrossRoads Extremity SCP, and Group 2 cohort included 21 patients who received a Stryker dorsal locking precontoured titanium plate (LPP). All patients were evaluated with radiographs, Patient-Reported Outcomes Measures Information System (PROMIS) outcome scores, and Foot Function Index (FFI). Results The complication and union rates did not vary between groups with a fusion rate of 95.7% in the SCP group and 90.5 % in the LPP group. Similarly, we found no significant differences in PROMIS or FFI scores between the SCP and LPP plates. Conclusion Use of either dorsal locking plate construct for 1st MTPJ arthrodesis was associated with high union rates and comparable functional outcomes. As locked plate technology continues to evolve for 1st MTPJ arthrodesis, it is important that clinical outcomes are reported. Levels of Evidence: Level IV </jats:sec

Impact of Resilience on Patient Reported Outcome of First Metatarsophalangeal Arthrodesis

Resilience is a dynamic construct defined as the ability to recover from stress. There is no literature examining the impact of resilience on outcomes following foot and ankle surgery. Retrospective analysis of patients who underwent first MTP arthrodesis from September 2011 to May 2020 were reviewed for patient characteristics and union status. PROMIS Physical Function (PF), Pain Interference (PI), Depression (D), and Foot Function Index (FFI) were collected. Resilience was measured using the Brief Resilience Scale. A multivariable linear regression analysis examining the impact of resilience on patient reported was conducted. At an average of 3.4 years postoperatively, resilience was found to independently affect patient reported outcomes across all instruments, except the FFI pain subscale. In the first study examining the impact of resilience following foot and ankle surgery, we found that resilience has an independent positive effect on overall physical function, disability, pain, and mental health following MTP arthrodesis. Preoperative resilience scores could be used to predict postoperative functional outcomes following MTP arthrodesis and guide postoperative rehabilitation. These findings help establish the role of early positive psychosocial characteristics within orthopaedic foot and ankle population.</jats:p

Factors Affecting Emergency Department Visits, Readmissions, and Reoperations within 30 Days of Ankle Fracture Surgery: An Institutional Retrospective Study

Category: Ankle; Trauma Introduction/Purpose: With the U.S. healthcare system focused on value of care, providers and hospitals are increasingly measured by factors that increase patient care and decrease healthcare cost. Early postoperative adverse events not only increase healthcare cost, but also illuminate areas of potential improvement in patient care. This study aims to delineate factors that may influence emergency department visits, admissions, and reoperations within 30 days of ankle fracture surgery. Methods: This retrospective review of patients at a Level 1 trauma center evaluated 30-day outcomes after ankle fracture surgery over a 4-year period (2015-2018). The outcome measures assessed were emergency department visits within 30 days, unplanned readmissions within 30 days and unplanned return to the operating room (OR) within 30 days. Patient and injury characteristics were investigated as potential factors related to these 30-day outcomes. Multiple linear regression was used for outcomes. P-values less than 0.05 were considered significant. Results: A total of 619 patients were identified. After exclusion of concurrent pilon fractures, 596 patients were eligible for final analysis. Forty-three (7.2%) patients visited the emergency department within thirty days, 30 (5.0%) patients were readmitted within thirty days, and 10 (1.7%) patients requiring unplanned return to the OR within thirty days. Sex, insurance status, comorbidities such as pulmonary disease, diabetes mellitus, psychiatric disease, and chronic kidney disease, smoking status, and fracture type/location were not found to be significantly related to 30-day events. Age less than 45 was a significant risk factor for returning to the ED within 30 days (RR 2.1, p=0.02). Open fractures were more likely to require unplanned reoperation than closed fractures (RR 5.7, p&lt;0.01). Conclusion: Age less than 45 years old was a risk factor for early ED visits. Open fractures were found to be at increased risk of needing unplanned reoperation. While further investigation into these risk factors is necessary to fully delineate a causal relationship, these findings can help physicians identify ‘at-risk’ populations after ankle fracture surgery and provide the necessary care to minimize early postoperative events. [Table: see text] </jats:sec

Treatment of Complex Hindfoot Trauma with Hindfoot Nail

Category: Hindfoot; Trauma Introduction/Purpose: Pilon fractures are often associated with severe bone comminution and soft tissue compromise. As a result, surgical salvage procedures such as hindfoot nailing may be indicated for patients who are not candidates for standard fixation techniques such as open reduction and internal fixation (ORIF). The purpose of this review was to access outcomes associated with complex hindfoot trauma acutely treated with hindfoot nailing. Methods: A case series at a Level I trauma center was performed to identify trauma patients with complex hindfoot fractures who underwent hindfoot nailing as definitive treatment after initial external fixation between 2012 and 2020. Indications included a combination of patient comorbidities, fracture severity, and soft tissue injury. Exclusion criteria included follow-up less than 3 months. Post-operative radiographs were interpreted by a fellowship-trained foot and ankle surgeon. Primary outcome measures included unplanned reoperation/revision and deep infection. Deep infection was defined as any patient requiring surgical debridement after definitive fixation with positive cultures or the presence of positive cultures at the time of planned surgery. Fractures were classified using the AO/OTA classification and injury characteristics and postoperative complications were recorded via chart review. Results: Twenty-six of 29 of identified patients met inclusion criteria. The most common AO/OTA classification was 43C (62%). The average age was 55 years (range, 31-94) and the most common mechanism of injury was motor vehicle crash (38%). Thirteen fractures (50%) were open with Gustilo Anderson grade IIIA fractures being the most common (38%). The overall deep infection rate was 15% with fifty percent of cases positive for a history of diabetes mellitus or smoking. Unplanned reoperations occurred in seven (27%) cases. Among these, a total of four (57%) occurred due to the development of deep infection, two (29%) were nonunions, and one (14%) was indicated for hardware failure. Below the knee amputation occurred in one patient with nonunion (4%), which was a grade IIIA open pilon fracture with significant bone loss. Union was achieved in the majority of patients (92%). Conclusion: Treatment of complex hindfoot trauma with intramedullary nailing has a high union rate as a salvage procedure in a poor host. Surgeons should consider this treatment in patients that are not candidates for standard open reduction and internal fixation techniques. </jats:sec

Impact of Resilience on Patient Reported Outcomes of First Metatarsophalangeal Arthrodesis

Category: Other; Ankle; Midfoot/Forefoot Introduction/Purpose: Resilience is an interactive dynamic construct most simply defined as the ability to recover from stress. To date, there is no literature examining the impact of resilience on the outcomes following foot and ankle surgery. Methods: We retrospectively reviewed patients who underwent first MTP arthrodesis from September 2011 to May 2020, 98 met inclusion criteria. Medical records were reviewed for patient characteristics and union status. PROMIS Physical Function (PF), Pain Interference (PI), Depression (D), and the Foot Function Index (FFI) were collected. Resilience was measured using the Brief Resilience Scale. A multivariable linear regression analysis examining the impact of resilience on patient reported outcomes while adjusting for potential confounding covariates was conducted. Results: At an average of 3.4+-2.6 (SD) years postoperatively, resilience was found to have an independent effect on patient reported outcomes across all instruments, except the FFI pain subscale. Resilience's effect on the instruments was as follows: PROMIS physical function (Unstandardized β 5.0, 95% CI 2.6 to 7.4), PROMIS pain interference (Unstandardized β -4.8, 95% CI - 7.8 to -1.8), PROMIS Depression (Unstandardized β -9.4, (95% CI -12.8 to -6.1), FFI disability subscale (Unstandardized beta -13.3, 95% CI -20.3 to -6.3 ), FFI activity limitation subscale (Unstandardized beta -15.7, 95% CI -23.0 to -8.5), FFI total (Unstandardized beta -11.7, 95% CI -18.1 to -5.4), and FFI pain subscale (Unstandardized beta -6.5, 95% CI -13.1 to.01). Conclusion: In this first study examining the impact of resilience following foot and ankle surgery, we found that resilience has an independent positive effect on overall physical function, disability, pain, and mental health following MTP arthrodesis. Preoperative resilience scores could be used to predict postoperative functional outcomes following MTP arthrodesis and guide postoperative rehabilitation. These findings help establish the role of early positive psychosocial characteristics within orthopaedic foot and ankle population. </jats:sec

Risk Factors for Nonunion in Pediatric Lateral Column Lengthening (Mosca) Procedures

Category: Hindfoot Introduction/Purpose: The Evans/Mosca procedure remains the most utilized extra-articular osteotomies for correction of pes planus. This desired lengthening is created by inserting a graft in the anterior aspect of the calcaneus through a complete transverse osteotomy. Failure of conservative methods, particularly for rigid pes planus, is a primary consideration for surgical management. Complications of the Evans procedure include delayed union, nonunion, malunion, subluxation of the calcaneocuboid joint, and persistent lateral column pain. Our study analyzes risk factors for development of non-union. Methods: After IRB approval 120 patients charts and 157 feet were analyzed for incidence of non-union which was defined by clinical and radiographic evidence of absence of union &gt;6 months. Delayed union was diagnosed if there was clinical evidence of healing without complete union at &gt;6 months. Exclusion criteria included age &gt;18 and revision lateral column lengthening. Patients' medical records were reviewed for basic demographics, complications, and surgical technique. Results: The cohort consisted of 75 females (47.8%) and 82 males (52.2%). The median age was 12 with an interquartile range (IQR) of 3. A total of 6 patients (3.7%) had wound complications or nerve injury. Nonunion occurred in 7 of 157 feet (4.5%) with 2 of 157 feet (1.3%) experiencing delayed union. The median age for patients with nonunion was significantly higher than those who achieved union (13.2 (IQR 2.75) vs. 11.2 (IQR 3) respectively). The fixation construct used was associated with increased risk of nonunion. Patients with screw fixation had the highest rate of nonunion at 50% (2/2) compared to pin and/or staple fixation at 6.8% (5/73), no fixation at 4% (3/75), and plate fixation at 0% (0/2). Both delayed union patients were treated with ultrasound bone stimulation, both patients were able to achieve complete union. Revision was attempted in 5/7 nonunions with all operative patients achieving union. Conclusion: Our study analyzed risk factors for developing non-union in patients undergoing calcaneal lengthening osteotomy for pediatric pes planus. We found age at time of surgery and graft fixation method to be significant risk factors for development of non-union. Our study highlighted that those patients who had non-union was on average &gt;2yrs older at time of surgery. Overall, lateral column lengthening is a well-tolerated procedure with a complication rate, including non-and delayed union, of 10.8%. Surgeons should be aware, in the largest cohort of pediatric Evans/Mosca procedures to date, patient age and type of fixation were associated with nonunion. </jats:sec

Outcomes of Tibiocalcaneal Arthrodesis in High Risk Patients: An Institutional Cohort of 18 Patients

Category: Hindfoot Introduction/Purpose: Tibiocalcaneal (TC) arthrodesis is commonly performed in patients with severe hindfoot disease. These include severe Charcot deformities, ankle malformations, chronic osteomyelitis (COM), and avascular necrosis (AVN). The talar vasculature becomes disrupted to the point that the bone can no longer be salvaged. The procedure involves performing a talectomy and fusing the tibia to the calcaneus. This helps in preserving the remaining hindfoot anatomy while allowing the patient to regain function and mobility. Our study highlights certain risk factors that influence the rate of postoperative complication after tibiocalcaneal surgery. Methods: We retrospectively reviewed the charts of 18 patients from a single institution who underwent tibiocalcaneal arthrodesis between the years of 2011 and 2019. Preoperative diagnoses, comorbidities, post-operative outcomes were noted among all patients. Then, the rates of non-union, below-knee amputations, revision surgeries, postoperative infections, and hardware failure were recorded. This data was then analyzed to determine which preoperative and perioperative factors affected postoperative outcomes for patients after tibiocalcaneal arthrodesis surgery. Results: Nonunion was the most commonly reported complication in this series. Eight of the eighteen patients were documented to have nonunion including three patients with stable pseudarthrosis. Diabetic patients had a slightly higher incidence of nonunion (4 of 7 patients) compared to those without diabetes (4 of 11 patients). Of the 9 patients diagnosed with Charcot arthropathy, 5 had nonunion. Three of five individuals with a BMI ranging from 25-30, and four of six individuals with a BMI of greater than 30 had a nonunion. Infection was a post-operative complication for four of the eighteen patients. Two of the four patients had multiple comorbidities in addition to chronic infections in the joint which were recurrent after surgery. Conclusion: In conclusion, TC arthrodesis provides a viable option for high risk patients with complicated ankle pathology who have not had successful outcomes from previous treatment. It is not without complications considering the comorbidities the patients present with before requiring this procedure. Further studies are necessary in order to validate the trends of outcomes and comorbidities of patients with TC arthrodesis. [Table: see text] </jats:sec