Reconstruction Of Foot Research Articles

What is the Total Ankle Arthroplasty Experience of Podiatric Foot and Ankle Surgery Fellows? A National Survey

In 2011, the Council of Podiatric Medical Education, the accrediting body of the American Podiatric Medical Association, approved the conversion of all Podiatric Residencies to 3-year surgical programs. In 2012, there were 12 podiatric fellowships recognized by the American College of Foot and Ankle Surgeons. To date, there are 53 programs listed under the college's website. As podiatric fellowships expand further research is needed to identify advantages and difficulties of fellowship training. One of the most salient topics is Total Ankle Replacement. Our primary aim was to obtain current fellow survey data to formulate improved outcomes of Total Ankle Arthroplasty and enhance our understanding of podiatric reconstructive foot and ankle surgery fellowship training programs. Invitation was administered by email and 73.6% of active reconstructive 2023-24 American College of Foot and Ankle Surgeons post-graduate fellows responded. Fellowship total ankle replacement case volume was significantly greater than residency (p = 0.037). Completion of 0-5 total ankle replacement(s) was 30.8%, and greater than 30 in 17.9% of fellows. Fifty nine percent reported feeling “comfortable” or “very comfortable” with total ankle arthroplasty. Patient specific instrumentation was used in a majority of cases by 66.7% of programs. Over three fourths (79.8%) of fellows stated they planned on performing TAR as an attending surgeon after their fellowship. Despite its limitations, we hope our survey data can aid graduating and previous fellows and add to the body of knowledge for future TAR educational programs and industry involvement. As podiatric fellowships continue to transform, so too must our research efforts to track progress.

Ortho-oncoplastic surgery in foot and ankle: A narrative overview on reconstruction of soft-tissue defects after oncologic resections.

Malignant tumors of the foot are rare, and treatment strategies are challenging considering the complex anatomy of this area. In recent years, dramatic advances in technology and collaborations between different specialties (such as orthopedic, oncology, radiology, plastic, and vascular surgery) significantly changed the approach to complex malignant tumors without resorting to limb removal. The combination of the strengths of both orthopedic surgery and plastic surgery constitutes the modern definition of "orthoplasty." The aim of this review article is to provide treatment strategies that are available for reconstruction of foot and ankle in limb-salvage surgery after tumor resection, with a specific focus on microsurgical techniques in plastic surgery. We conducted a comprehensive search for relevant papers across PubMed, Scopus, Embase, and Web of Science. We included patient-based studies reporting on procedures for soft-tissue reconstruction with small and large soft tissue defects. Indications, pros and cons, and technique tips are discussed for each type of reconstructive technique. The search was done using literature of the past 30 years (from 1990 to date), resulting in about 725 articles describing over 2000 cases. Cutaneous flaps included lateral supramalleolar flap, medial plantar flap, reverse sural neurocutaneous island flap, medial leg flap, and lateral leg flap. Free flaps included anterolateral thigh flap, radial forearm flap, latissimus dorsi flap, gracilis muscle flap, lateral arm flap, and rectus abdominis flap. The orthoplastic approach in musculoskeletal oncology is a collaborative model of orthopedic and plastic surgeons working together, resulting in a higher rate of successful limb salvage in patients at risk for amputation. Protocols, biologic substitutes, and surgical techniques are largely improved in the last decades increasing the possibility of functional reconstruction. Microsurgical strategies represent the new frontiers in these demanding reconstructions.

Alteration of the calf strength by heel cord lengthening, gastrocnemius recession through tenotomy or fasciotomy. A retrospective clinical force analysis before and after surgery

BackgroundIndications for surgical corrections about the Achilles tendon are increasing as additional measures in reconstructive interventions about the foot. These indications include shortened gastrocnemii, which cause a so-called ‘functional pes equinus’ and secondary forefoot imbalances, as well as corrections of pes planus and cavus. Surgery about the heel cord may also be indicated for achillodynia and diabetic pressure ulcers. However, there is a lack of evidence that quantifies the results of lengthening procedures about the heel cord. The aim of this study was to quantify the exact changes in calf strength one year after elongating the triceps surae, by measuring flexion forces in 90 degrees knee flexion and knee extension. MethodsThis study involves 69 patients who were examined for calf strength preoperatively and 1 year after gastrocnemius release. A new device, the Leonardo Mechanograph® (Novotec Medical) was used to measure calf strength. Measurements were performed with the knee flexed and extended. ResultsThe operated leg had an overall statistically significant reduction in strength after surgery. Changes were similar on the contralateral leg. The difference in force reduction between the operated and non-operated leg was not statistically significant ConclusionA correlation between measured plantar flexion forces of the foot after a reconstructive foot operation with or without a lengthening procedure about the calf musculature could not be established. Level of evidenceLevel III: retrospective cohort study.

Exploring morphological variations and clinical significance of interconnections between flexor hallucis longus and flexor digitorum longus tendons

BackgroundThe tendons of the flexor hallucis longus (FHL) and flexor digitorum longus (FDL) are commonly utilized in reconstructive foot surgery to address deformities. These tendons intersect on the plantar surface and exhibit varying interconnections that can significantly impact graft length and complicate the tendon harvesting process. The objective of this study was to comprehensively categorize these interconnections using a modified classification system and precisely determine their positional relationships with surgically significant bony landmarks. MethodsSixty embalmed feet of 30 cadavers were studied to analyze the interconnections between FHL and FDL in the planta pedis, classify them in a modified classification system and measure distances to surgically relevant anatomic landmark. ResultsThe study revealed three primary types of interconnections. Type I, representing a proximal-to-distal connection from the FHL to the FDL, was observed in 85% of the feet. Type II, signifying a proximal-to-distal connection from the FDL to the FHL, was found in 11.66% of the feet. Type III, characterized by a crossed connection, was identified in 3.33% of the feet. The average point of branching for the FHL and FDL tendons was situated 4.5 cm and 3.5 cm distal to the navicular tuberosity, respectively. ConclusionThe presence of atypical proximal-to-distal interconnections from the FHL to the FDL may play a role in preserving residual function in the lesser toes following FDL transfer procedures. Awareness of anatomical variations in the location of these interconnections is crucial for preserving them during surgical interventions, ultimately mitigating the risk of functional impairment in the lateral toes post-tendon grafting.

Reconstruction of foot and ankle defects using the vaccum sealing drainage versus the induced-membrane the elderly: A retrospective comparative study.

The purpose of this study was to compare the reconstructive outcomes of soft-tissue defects around foot and ankle with vaccum sealing drainage (VSD) or induction membrane (IM) of cement formation and attempt to provide an optimal strategy for elderly patients. A retrospective review of all continuous patients with foot and ankle reconstruction using different flaps from October of 2016 and October of 2020 was performed. Based on the different way, the patients were divided into two groups: VSD group (n = 26) and IM group (n = 27). Outcomes were assessed according to the size of the defect, frequency of debridement procedures, hospitalization time, duration of healing, the healing rate, major amputation rate, functional outcomes and complications. Immunohistochemistry (IHC) detection of vascular endothelial growth factor (VEGF) was also be completed. We found that there was no difference in demographic characteristics, size of the defect, debridement times and functional outcomes between the two groups (p > 0.05); however, a significant difference in the wound healing time, hospitalization time and complications were noted between them(p < 0.05). The fresh granulation tissue of both groups showed abundant positive expression of VEGF. Thus, the VSD and IM are both available for foot and ankle reconstruction in elderly patients. However, the IM group offers short hospitalization time, duration of healing and lower frequency of postoperative complications. Thus, we advocate the IM for reconstruction of defects of the foot and ankle region in the elderly patients.

Reconstruction of Foot and Ankle Defects: A Prospective Analysis of Functional and Aesthetic Outcomes.

Reconstruction of foot and ankle defects requires selecting an appropriate durable and aesthetically appealing option. From the different options, the procedure's choice depends on the defect's size, location, and donor area's availability. Patients' main goal is to have an acceptable biomechanical outcome. In this prospective study, we have included patients who had undergone reconstruction of the ankle and foot defects between January 2019 and June 2021. Patient demographics, location and size of the defect, different procedures, complications, sensory recovery, ankle hindfoot score, and satisfaction score were recorded. 50 patients with foot and ankle defects were enrolled in this study. All flaps survived except one free anterolateral thigh flap. Five locoregional flaps developed minor complications, and all skin grafts healed well. The Ankle Hindfoot Score outcome has no significant relation with the anatomical location of the defects and the reconstructive procedure. All patients reconstructed using random local flap and with free flap were satisfied with the aesthetic outcome. Because of limited soft tissue, local flap availability is restricted to small defects. Satisfaction rates are high in local and free flaps and are best suited for reconstructing the weight-bearing part of the foot. Bulky flaps should be avoided over the dorsum and ankle region.

Enhancing Postoperative Pain Management and Decreasing Hospital Length of Stay on a Pediatric Orthopedic Unit: Implementation of an Ambulatory Continuous Peripheral Nerve Block Program

PurposePediatric Ambulatory Continuous Peripheral Nerve Block (ACPNB) programs are a safe and effective pain management modality that can reduce patient length of stay (LOS) while ensuring optimal, multimodal pain management at home after surgery. Our institution previously solely used electronic infusion pumps to deliver local anesthetic via peripheral nerve catheters, requiring postoperative inpatient admissions for pain management. We aimed to enhance postoperative pain management and decrease hospital LOS after orthopedic foot and ankle surgery through implementation of an ACPNB program. DesignAn ACPNB program was developed and implemented for pediatric patients undergoing foot and ankle reconstruction surgery. MethodsWe provide a detailed description of the multidepartment collaboration led by the acute pain service (APS) and orthopedics that resulted in the development and implementation of a pediatric ACPNB program using portable, elastomeric devices for patients undergoing reconstructive foot and ankle surgery. Implementation tools, including caregiver and nursing education resources, a data collection log, a process map, and staff surveys are shared. FindingsTwenty-eight patients received elastomeric devices during the 12 months of data collection. All 28 patients who required a continuous peripheral nerve block (CPNB) for pain management following foot and ankle reconstruction surgery received their block via an elastomeric device rather than an electronic hospital infusion pump. All patients and caregivers expressed positive satisfaction with pain management after hospital discharge. No patient with an elastomeric device required scheduled opioids for pain management by the end of their hospital admission. LOS on the orthopedic inpatient unit for foot and ankle surgery decreased by 58%, representing an estimated 29 days and $27,557.88 saved. A majority (96.4%) of staff survey respondents reported feeling satisfied with their overall experience working with an elastomeric device. ConclusionsThe successful implementation of a pediatric ACPNB program has led to positive patient outcomes, including a significant decrease in hospital LOS and health system cost savings for this patient population.

Effect of Vancomycin Applied to the Surgical Site on Fracture Healing in a Diabetic Rat Model.

Prophylactic vancomycin treatment decreases the prevalence of surgical site and deep infections by >70% in diabetic patients undergoing reconstructive foot and ankle surgery. Thus, determining whether clinically relevant local vancomycin doses affect diabetic fracture healing is of medical interest. We hypothesized that application of vancomycin powder to the fracture site during surgery would not affect healing outcomes, but continuous exposure of vancomycin would inhibit differentiation of osteoblast precursor cells and their osteogenic activity in vitro. The vancomycin dose used to treat the diabetic rats was a modest increase to routine surgical site vancomycin application of 1 to 2 g for a 70-kg adult (21 mg/kg). After femur fracture in BB-Wistar type 1 diabetic rats, powdered vancomycin (25 mg/kg) was administered to the fracture site. Bone marrow and periosteal cells isolated from diabetic bones were cultured and treated with increasing levels of vancomycin (0, 5, 50, 500, or 5000 µg/mL). Radiographic scoring, micro-computed tomography (µCT) analysis, and torsion mechanical testing failed to identify any statistical difference between the vancomycin-treated and the untreated fractured femurs 6 weeks postfracture. Low to moderate levels of vancomycin treatment (5 and 50 µg/mL) did not impair cell viability, osteoblast differentiation, or calcium deposition in either the periosteum or bone marrow-derived cell cultures. In contrast, high doses of vancomycin (5000 µg/mL) did impair viability, differentiation, and calcium deposition. In this diabetic rodent fracture model, vancomycin powder application at clinically relevant doses did not affect fracture healing or osteogenesis.

Recurrent diabetic foot ulcers: Results of a maximal multidisciplinary approach including reconstructive foot/ankle surgery.

The diabetic foot ulcer (DFU) and Charcot Neuroarthropathy (CN) are serious complications of diabetes mellitus in which wound closure is complex to achieve. Treating recurrent DFU in patients with a combination of infection, ischemia, and deformities is extremely challenging and this group of patients has a very poor outcome. This case series describes the outcomes of patients with a recurrent DFU and CN, with a mean SINBAD score of 4 and of which 40% had a TCS of D3, using a multidisciplinary protocol that includes reconstructive foot and ankle surgery. In 24/35 (69%) of patients, wound closure was achieved after a mean of 75 days postoperatively. The mean ulcer-free period was 358 days. The mean number of interventions was 6.7 (range 3-9). Post treatment 27/35 (77%) of patients was mobile, without additional amputation or ulcer recurrence. This study shows that wound closure and a long ulcer-free period can be achieved in patients with a DFU and CN and its multifactorial underlying diseases when treated in a multidisciplinary team, including reconstructive foot and ankle surgery.

Surgical Site Infection after Foot and Ankle Surgery: A Retrospective Analysis of Incidence using a Low Concentration Chlorhexidine Gluconate (CHG) 0.05% in Sterile Water

Category: Other; Ankle; Bunion; Diabetes; Sports; Trauma Introduction/Purpose: Surgical site infection (SSI) after foot and ankle procedures adversely impacts both the quality and cost of health care delivery; increasing hospital length of stay, the number of re-operations, and readmission rate(s). The purpose of the present study was to assess the incidence of SSI in patients who underwent foot and ankle surgery with concurrent intraoperative lavage containing low concentration Chlorhexidine Gluconate (CHG) 0.05% in sterile water. Methods: Seventy-three patients underwent reconstructive foot and ankle procedures which utilized low concentration CHG 0.05% for intraoperative lavage between September 2020 and October 2021, at a single institution. Minimum follow-up for inclusion was at least 90 days; procedures with concurrent use of topical vancomycin powder, or prophylactic antibiotics postoperatively were excluded. Demographic data, and the incidence of complications including postoperative erythema, delayed wound healing, dehiscence, SSI, as well as reoperations were recorded. Univariate and multivariate analyses were performed. Results: Twelve complications occurred in 73 patients (16%): 1 erythema (1.4%), 4 delayed wound healing (5.5%), 1 dehiscence (1.4%), and 6 SSI's (8.2%). Of the 6 SSIs, 2 were superficial and 4 deep; representing an incidence rate of 2.7 and 5.5%, respectfully. Six reoperations were performed in 4 patients for deep SSI; 3 (75%) had a previously documented history of SSI after orthopedic surgery. A history of previous SSI infection after orthopedic surgery was identified as an independent predictor of future SSI following foot and ankle surgery (p &lt;.05). No associations were identified for purported risk factors. Conclusion: The present study is the first to assess the utility of a low concentration CHG 0.05% as an intraoperative irrigation agent for the purpose of mitigating postoperative SSI after foot and ankle surgery. The data suggests a low incidence of deep SSI in patients without a documented history of previous SSI after orthopedic surgery; without the concurrent use of topical vancomycin or prophyaltic antibitiocs, postoperatively. Additional studies are warranted to better understand the potential association identified.

Application of the distally based sural neurocutaneous flaps in the management of foot and ankle defects in patients with diabetic foot.

BackgroundWe report our experience on the use of a distally based sural flap for soft tissue reconstruction of foot and ankle defects in patients with diabetic foot.MethodsThe actual study is a retrospective, open, non-controlled, and clinical study of 25 patients treated with diabetic foot on whom reconstruction with distally based sural neurocutaneous flaps was performed from May 2019 to December 2021.ResultsThe mean age was 64.9 years, and there were 15 male and 10 female patients. The mean follow-up was 9.8 months, which ranged from 6 to 12 months. The size of the flaps ranged from 6 × 5 to 15 × 9 cm2. Twenty-two of the 25 flaps survived intact with sufficient blood supply. Two cases had a small superficial necrosis, which was resolved after a change of daily dressing and was heeled eventually. In one case, partial necrosis was observed that was managed with minor revision and the use of split-thickness skin graft.ConclusionsThe distally based sural flap is considered to be useful for reconstruction of foot and ankle defects in patients with diabetic foot.

Soft tissue reconstruction of foot and ankle defect using various flap cover: single centre experience

Introduction: Soft tissue defect at ankle and foot region are very common following road traffic accident. Reconstruction in this region is challenging to surgeon because of poor vascularity and paucity of available surrounding tissue. Purpose of study is to evaluate various ankle and foot defect, advantage and disadvantages of different methods of management, future prospective of suitable method according to defect.Materials and Methods: Retrospective study of 65 patients with soft tissue defects around foot and ankle region underwent various reconstructive procedures at SMS hospital Jaipur from January 2020 to December 2020. Study enumerates various etiological factors and describes different reconstructive surgical procedures.Results: Age at presentation range from 8 to 63 years and males were more common. Road traffic accident is most common cause for defect at foot and ankle region followed by diabetic foot and orthopedic implant exposure. Most common site of defect in foot and ankle defect were dorsum of foot followed by lateral malleolus region. Free ALT flap cover performed most frequently followed by cross leg flap.Conclusion: Reverse sural flap is reliable option for small ankle and foot defect near ankle. Cross leg flap is also most reliable option for large defect in opposite healthy limb. Reverse saphanous flap also used for small defects on medial side ankle. Larger defect of ankle and foot can be covered by free fasciocutaneous or myocutaneous flaps where microsurgical expertise available.

Dual-Perforator Flap With Wide Pedicle Versus Sural Neurocutaneous Flap With Peroneal Artery Perforator in the Treatment of Soft Tissue Defects of Foot and Ankle

How to deal with large soft tissue defects around the foot and ankle is still controversial. The aim of this study was: (1) to display a new pedicled flap, also named the dual-perforator flap with wide pedicle (DPFWP), and (2) to compare it with the sural neurovascular flap with peroneal artery perforator (SNFPAP) in foot and ankle reconstruction. According to different surgical methods, 82 patients were divided into 2 groups: the DPFWP group (42 cases) and the SNFPAP group (40 cases). All cases underwent a flap surgery after radical debridement. The 2 groups were homogeneous in terms of age, sex, body mass index (BMI), etiology, location, and follow-up duration. Operation indexes were compared, including flap length, flap width, operation time and blood loss. Complications, cosmetic appearance, and functional outcome were analyzed, and statistical analysis was performed. The DPFWP group had larger flap length (24.5 ± 4.6 cm vs 16.3 ± 3.8 cm), and flap width (10.5 ± 2.7 cm vs 7.8 ± 1.7 cm) than the SNFPAP group. In postoperative follow-up, DPFWP group showed a lower complication rate and better cosmetic, functional outcomes than SNFPAP group. In conclusion, this study showed that a DPFWP flap brought better results than a SNFPAP flap in terms of complications, cosmetic appearance, and functional outcomes for patients undergoing reconstruction of foot and ankle defects.

Union Rates With the Use of Structural Allograft in Lapidus Arthrodesis: A Comparison Between Two Fixation Constructs

Although structural allograft has been previously described as acceptable practice for reconstructive foot and ankle surgery, results for an allograft bone wedge in Lapidus arthrodesis are unknown. Additionally, there is no consensus on the superiority of a single fixation construct in Lapidus cases. Our objective was (1) to report union rates for Lapidus arthrodesis with and without the use of an allograft bone wedge and (2) to determine if fixation construct impacts rates of union when using structural allograft. A review was performed for Lapidus cases with fixation constructs of 2 crossed compression screws (CS) and a medial locking plate with single transarticular screw (MPS), both with and without use of an allograft bone wedge. Inclusion required a CT scan to evaluate bony union. There was no significant difference in union rates (p = .41) between the use (90%) and the nonuse (97%) of an allograft bone wedge. Union rates were significantly different (p = .04) when comparing CS fixation (85%) and MPS fixation (98%). The comparative results between the fixation constructs highlight the importance of compression across the arthrodesis site as part of a robust fixation construct. Our findings demonstrate that the use of an allograft bone wedge in Lapidus arthrodesis may mitigate complications due to metatarsal shortening while providing satisfactory rates of union.

2021 J. Leonard Goldner Award Winner: Vancomycin Topically Applied at the Surgical Site Does Not Impair Diabetic Fracture Healing and Dose-Dependently Inhibits Calcified Tissue Formation by Osteoblast Precursors Cells

Category:Diabetes; Basic Sciences/Biologics; TraumaIntroduction/Purpose:Prophylactic vancomycin treatment decreases the rates of surgical site and deep infections by >70% for diabetic patients undergoing reconstructive foot and ankle surgery. We aimed to identify whether local vancomycin at a clinically relevant dose impaired fracture healing in diabetic rats. Our hypothesis was that local vancomycin powder to the fracture site would not affect long term healing outcomes, but continuous exposure of vancomycin would inhibit differentiation of osteoblast precursor cells and their osteogenic activity in vitro. The 25 mg/kg vancomycin was a modest increase to routine surgical site vancomycin application of 1-2 grams for a 70 kg. adult (21.42 mg/kg). Determining how vancomycin affects diabetic fracture healing is of clinical interest, particularly considering its prophylactic use in foot and ankle patients.Methods:Following induction of a femur fracture in male BB Wistar type 1 diabetic rats, a longitudinal incision was made in the lateral aspect of the femur. Powdered vancomycin (25mg/kg) was administered to fracture site of treated (n=5), and Sham surgery (n=6) control rats. Femurs harvested at 6 weeks after fracture, were X-ray scored, µCT scanned and tested to failure in torsion. Bone marrow and periosteal cells isolated from diabetic bones and MC3T3 cells were plated for MTT survival and osteogenic assays. After 4 days, beta glycerol phosphate, ascorbic acid and either 0, 50, 500, or 5,000 µg/mL vancomycin were added to the media (n=3 per group). Cells were fixed at 7 and 14 days for alkaline phosphatase (ALP) staining and at 28 days for Alizarin Red S staining. Parametric data were analyzed using student t-tests. Non-parametric data were analyzed using a Kruskal-Wallis ANOVA on RANKs and Tukey post-hoc tests.Results:Radiographic scoring did not show differences between the control (2.28+-1.57) and treatment (3.67+-0.75) groups (p=0.093). BV/TV was similar between the control (61.2+-8.4 %) and treatment (56.5+-5.2 %) groups (p=0.081). Mechanical testing found similar values in normalized torque to failure (69.56+-36.80 vs 50.05+-28.82 %N*mm, p=0.356), and torsional rigidity (105.97+-103.62 vs 48.68+-32.95 %Nmm2, p=0.291), for control and treatment groups, respectively. ALP staining was comparable between groups at either 7 (p=0.809) or 14 days (p=0.343) in bone marrow or MC3T3 cells. Alizarin Red S staining found dose- dependent decreases in mineralized nodule formation between the untreated (10.16+-5.01 nodules per 3.8cm2), and 500µg/mL vancomycin (3.16+-2.26 nodules per 3.8cm2) bone marrow groups at 28 days (p=0.026). Periosteal and MC3T3 cell viability were only impaired at the 5000µg/mL vancomycin dose (p=0.001).Conclusion:Our study argues that local application of vancomycin does not affect diabetic fracture healing at clinically relevant doses. We studied a nearly 2-fold higher vancomycin dose than the 'standard' dose of 14.3mg/kg and less than the 143.5mg/kg dose that did not impair rat spine fusion. Although in vitro vancomycin did not affect cell viability and osteogenic staining in periosteal and MC3T3 cells, mineralized nodule formation was dose-dependently inhibited at day 28 in bone marrow cells. Our results bring novel insight into the effects of vancomycin in diabetic fracture healing and the how long-term dosing impacts cell viability and osteoblastogenesis.

Clinically Significant Improvement in Pre vs Post-Operative PROMIS Scores after Cavovarus Reconstruction in Patients with Charcot-Marie-Tooth Disease

Category:Ankle; Hindfoot; Midfoot/Forefoot; OtherIntroduction/Purpose:Charcot-Marie-Tooth (CMT) disease is an inherited progressive neurologic disorder characterized by extremity deformities and functional deficits. Surgery is indicated for substantial functional deficits and severe deformity.Reconstructive surgery is individualized and multifaceted to correct the cavovarus deformity, and maximize function with tendon transfers and joint stabilization procedures. No previous study has reported improvement from pre-operative baseline patient reported outcome measures to post-operative outcome measures. We studied PROMIS scores and patient satisfaction surveys to report improvements in physical function, pain interference, and depression. Our hypothesis was that CMT patients' preoperative baseline would be significantly worse than the control population in all domains, and that they would experience demonstrable improvement greater than the minimally clinically important difference (MCID) for the 3 PROMIS score domains tested post- operatively.Methods:Prospective PROMIS scores were collected on 147 feet in 89 patients who had reconstructive foot surgery for CMT during a 40-month period (June 2016-December 2020) by a single surgeon. Radiographic and clinical data were recorded prospectively to identify complications. Each patient completed a battery of physical function (PROMIS-PF), pain interference (PROMIS-PI), and mood/depression (PROMIS-M) instruments pre-operatively, every 3 months for the first post-operative year, and annually thereafter. Pre-operative PROMIS scores are reported for patients prior to any surgery on either foot to establish a functional baseline. Post-operative PROMIS values are reported only after the last planned surgery was completed in the common setting of staged bilateral surgeries. Patient satisfaction surveys were administered at last follow-up. Post-operative complications were recorded. Statistical analysis was performed with students t-test for continuous variables and chi-squared analysis for categorical variables. PROMIS scores are reported as mean (+/- standard deviation).Results:41 patients met inclusion criteria for reporting pre-operative baseline PROMIS scores, and 57 patient's post-operative PROMIS data were included after the final reconstructive surgery within the study window. Mean follow-up was 26 months. Pre- operative baseline PROMIS demonstrate CMT patients have worse PROMIS-PF, PROMIS-PI, and PROMIS-M than the population which is statistically and clinically significant. All PROMIS domains were improved by clinically and statistically significant values. PROMIS-PF improved from 38 (+/-6) to 46 (+/-5), a 4-5x improvement over MCID (2). PROMIS-PI improved from 59 (+/-8) to 51 (+/-7) representing a 1-2x improvement in the MCID (4). PROMIS M improved from 53 (+/-10) to 49 (+/- 5) achieving MCID 2. >90% were highly satisfied and would undergo surgery again. There were 7 complications: 1 deep infection, 2 superficial infections, 1 superficial wound dehiscence, and 3 unplanned hardware removals. 5/7 of these patients experiencing complications remained 'satisfied' or 'very satisfied'.Conclusion:Patients with CMT disease have baseline functional deficits in physical and mental health as judged by PROMIS measures that were worse than the population means in all 3 tested domains. Surgical reconstruction produced clinically significant improvements in PROMIS-PI, PF, and M domains at up to 4 years of follow-up. Patients were highly satisfied with the results with an acceptable rate of post-operative complications.

Evaluation of Union Rates Between Two Fixation Constructs with Use of an Allograft Bone Wedge in the Lapidus Procedure

Category:Bunion; Midfoot/ForefootIntroduction/Purpose:The Lapidus procedure is used to treat a painful bunion deformity by decreasing motion and aligning the first ray of the foot. Although structural allograft has been previously described as acceptable practice for reconstructive foot and ankle surgery, outcomes following the addition of an allograft bone wedge at the Lapidus arthrodesis site are unknown. The biomechanical properties of various internal fixation constructs for Lapidus have been evaluated in cadaveric models with no consensus on the superiority of a single fixation method. Our objective was to report union rates for the Lapidus procedure with and without the use of an allograft bone wedge and to determine if fixation construct influenced the rates of union.Methods:Lapidus patients with fixation constructs of 2 crossed compression screws (CS) and a medial locking plate with single intra-articular screw (LPS), with and without use of an allograft bone wedge were retrospectively analyzed. Inclusion required a postoperative CT scan which evaluated union status, with greater than 50% bony bridging across the arthrodesis site used as determination of bony union. Exclusion criteria included age younger than 18 years, prior midfoot surgery, concomitant surgical procedures which may alter the normative healing process, neuropathy and inflammatory disease. Demographic and radiographic outcomes were analyzed between the wedge and no wedge groups. Pre and post operative radiographic measurements included intermetatarsal angle (IMA), first cuneiform-metatarsal length (CML) and relative length of the 1st metatarsal (RLM). Two sample t tests were used to evaluate the radiographic measurements and risk differences were calculated to evaluate rates of union. All analyses were executed using SAS Studio version 9.04.Results:A total of 81 cases were included with 54 cases in the wedge group and 27 cases in the no wedge group. Preoperative IMA, CML and RLM measurements were not significantly different between the groups (p >0.05 for each). An overall union rate of 92% was found, with a significant difference (p=0.01) between the wedge group with 87.5% union and the no wedge group with 100% union (Table 1). With LPS fixation, there was no significance difference (p>0.05) in rates of union between the wedge (N=25) and no wedge (N=21) groups. With CS fixation, there was a significant difference (p=0.014) in rates of union between the wedge (N=29) and no wedge (N=6) groups. Postoperative radiographic comparisons between the wedge and no wedge groups were not significant for IMA (p=0.89), CML (p=0.16) and RLM (p=0.32) measurements.Conclusion:With LPS fixation, rates of union were not significantly different between the wedge (96% union) and no wedge groups (100% union). This finding highlights the importance of a robust fixation construct which is an important predictor of union in Lapidus procedures. Use of an allograft wedge can facilitate intraoperative decisions on the appropriate amount of bony resection and decrease the risk of metatarsalgia due to shortening. Lapidus arthrodesis with an allograft bone wedge fixated with a medial locking plate and intra-articular compression screw provides the ability to maintain first ray length and achieve greater corrections with satisfactory union rates.

Reconstruction of Foot and Ankle Defects Using Free Lateral Arm Flap: A Retrospective Review of Its Versatile Application.

Background Successful reconstruction of the feet and ankles remains challenging due to limited quantities of soft tissue and laxity. The free lateral arm flap (LAF) is an alternative to conventional flaps and has been widely used due to advancements in its flap characteristics. This study is aimed at utilizing the advantages of this flap to validate its increased applications for foot and ankle defects. Methods Twenty patients with various LAF types between May 2011 and May 2020 were enrolled. Clinical data was retrospectively collected, and defect sites were classified according to the subunit principle. We utilized various LAF types, such as LAFs with sensate, extended, osteomyocutaneous, or myocutaneous flaps, as necessary. A two-point discrimination test was performed, and results were statistically compared between flaps. Results Among the diverse etiologies of skin defects, chronic inflammation was the most common cause of defects. Various LAF types, including LAFs with fasciocutaneous, extended fasciocutaneous, musculocutaneous, and osteomyocutaneous flaps, were used. The versatility of free LAF helped successfully cover various defects in all cases. Results of the two-point discrimination test were statistically significant between groups. Conclusions Free LAF is a unique soft tissue free flap that is more versatile than other flaps, allowing flaps to be continuously modified and applied to various foot and ankle defects under different clinical conditions.

Percutaneous Harvest of Calcaneal Bone Autograft: Quantification of Volume and Definition of Anatomical Safe Zone

Bone grafting is commonly used in reconstructive foot and ankle surgery. The calcaneus provides an excellent site for graft harvest due to its rich vascularity and access to corticocancellous or strictly cancellous bone. The relatively thin soft tissue envelope makes dissection easy compared to more proximal autograft sites. In this investigation we quantified cancellous autograft volume from the calcaneus while simultaneously defining anatomical safe zones and identifying anatomical structures at risk. Nine matched-pair (18 total) fresh-frozen cadaveric below-knee limbs were utilized. All limbs were thawed at room temperature prior to the procedure. Calcaneal autograft was harvested following the senior author's (D.J.E.) technique. Bone graft was packed and quantified by podiatric medical students (B.R. and J.T.). An independent investigator (K.S.) meticulously dissected the lateral calcaneal soft tissue envelope to determine rates of neurovascular compromise. Anatomical safe zones were defined by measurements of the harvest site compared to vital anatomical structures. Cancellous autograft averaging 0.85 cc was obtained through an average cortical opening of 0.77 cm. The stab incision is approximately 2.2 cm anterior to the posterior aspect of the calcaneus and 1.6 cm superior to the inferior aspect of the calcaneus. This incision is an average 1.8 cm from the main branch of the sural nerve. No neurovascular damage was found. This study details percutaneous harvest of calcaneal autograft for use in forefoot or midfoot surgeries with an emphasis on feasibility of this additional procedure. The technique proposed is valuable based on simplicity, wide anatomic safe zone, and potential improvement of surgical outcomes.

Application of computed tomography angiography-assisted classification of arterial branches in the first web space of the foot for thumb reconstruction

Computed tomography angiography (CTA) has become a widely used imaging modality in vascular surgery. The first web arterial branches of the foot are significant for surgical planning of the donor site for thumb reconstruction. We retrospectively analysed 30 thumb reconstructions with free second toe/great toe wrap-around flap transfer, performed between January 2016 and January 2019. The mean patient age was 30 (2-45) years. The causes of hand injury were: 20 machine strangulation injuries, 6 heavy weight smash injuries, and 4 crush injuries. Patients with iodine allergy were excluded preoperatively. We evaluated the effectiveness of CTA in visualizing first web arterial branches and compared it with intraoperative findings. Surgical plan for donor sites was prepared based on the classification of the first web arterial branches. The arterial branches of the patients were classified based on CTA findings as follows: (1) fork type: 24 patients (48 feet, 80%); (2) main trunk type: four patients (8 feet, 13.33%); and (3) side branch type: one patient (2 feet, 3.33%). One case of poor vascular continuity and artifacts in CTA underwent thumb reconstruction with free great toe wrap-around flap transfer. Tissue survival was achieved in all reconstructed thumbs. During the follow-up period (average, 12 months), all reconstructed thumbs exhibited good outcomes. The donor sites on the feet of all patients recovered well. CTA allows preoperative assessment of blood supply and planning of donor site. Our results can serve as a reference for surgical planning of the donor site while reducing the occurrence of adverse events.