Extremity Amputation Research Articles

Preoperative hemoglobin level and anemia frequency among patients admitted for diabetic lower extremity amputation.

Anemia is known to be prevalent in patients with diabetic foot ulcers, but such was not documented in those who required lower extremity amputations (LEAs). In this high-risk population, preoperative anemia could be an additional risk factor for postoperative morbidity and mortality. This study attempts to address the knowledge gap related to the preoperative hemoglobin (Hg) level and anemia prevalence in patients admitted for diabetic LEA. Using a cross-sectional design, the primary outcomes were defined as the mean preoperative Hg level and anemia frequency. Mean differences and sex-based results were calculated and compared between three categories: major, midfoot, and forefoot amputation groups. Correlation between Hg level and serum creatinine was set as a secondary outcome. A total of 141 patients comprising 192 amputation cases were included. The mean Hg value for the whole sample was 10.6 ± 1.8g/dl. Only 18 patients (9.7%) had a normal Hg level and 174 (90.3%) were anemic: 90 cases (46.8%) with mild anemia, 76 (40.8%) with moderate anemia, and 8 cases (4.3%) with severe anemia. No significance was found between mean Hg values of the three groups or between sex groups. A significant negative correlation between the levels of serum creatinine and Hg was found (p = .037). An overwhelming majority of patients admitted for diabetic LEA were anemic. Since anemia could impede limb perfusion and induce higher postoperative mortality rate, adjusting this confounder could be justified. Future research should aim to evaluate the impact of preoperative blood component transfusion on postoperative complications following diabetic LEA.

The impact of body mass index on rehabilitation outcomes after lower limb amputation.

To determine the effect of obesity on physical function and clinical outcome measures in patients who received inpatient rehabilitation services for lower extremity amputation. A retrospective review was performed on patients with lower extremity amputation (n = 951). Patients were stratified into five categories adjusted for limb loss mass across different levels of healthy body mass index (BMI), overweight, and obesity. Outcomes included the Inpatient Rehabilitation Facility Patient Assessment Instrument functional scores (GG section), discharge home, length of stay (LOS), therapy time, discharge location, medical complications and acute care readmissions. Deep learning neural networks (DLNNs) were developed to learn the relationships between adjusted BMI and discharge home. The severely obese group (BMI > 40 kg/m2) demonstrated 7%-13% lower toileting hygiene functional scores at discharge compared to the remaining groups (p < .001). The severely obese group also demonstrated 8%-9% lower sit-to-lying and lying-to-sitting bed mobility scores than the other groups (both p < .001). Sit-to-stand scores were 16%-21% worse and toilet transfer scores were 12%-20% worse in the BMI > 40 kg/m2 group than the other groups (all p < .001). Walking 50 ft with two turns was most difficult for the BMI > 40 kg/m2 group, with mean scores 7%-27% lower than the other BMI groups (p = .011). Wheelchair mobility scores for propelling 150 ft were worst for the severely obese group (4.9 points vs. 5.1-5.5 points for all other groups; p = .021). The LOS was longest in the BMI > 40 group and shortest in the BMI < 25 group (15.0 days vs. 13.3 days; p = .032). Logistic regression analysis indicated that BMI > 40 kg/m2 was associated with lower odds risk (OR) of discharge-to-home (OR = 0.504 [0.281-0.904]; p < .022). DLNNs found that adjusted BMI and BMI category were ranked 11th and 12th out of 90 model variables in predicting discharge home. Patients with severe obesity (>40 kg/m2) achieved lower functional independence for several tasks and are less likely to be discharged home despite higher therapy volume than other groups. If a patient is going home, obesity will pose unique demands on the caregivers and resources can be put in place to help reintegrate the patient into life.

Lower Extremity Amputations Among Patients with Diabetes Mellitus: A Five-Year Analysis in a Clinical Hospital in Bucharest, Romania

Background and Objectives: Lower extremity amputations (LEAs) represent a significant health problem. The aim of our study was to analyse the type and trends of diabetes-related LEAs in patients hospitalized in one surgical centre in Bucharest between 2018 and 2021. The second aim was to assess the impact of the COVID-19 pandemic on the trends of LEAs. Materials and Methods: We performed a retrospective analysis of all lower limb amputations performed between 01 January 2018 and 31 December 2021 in the Department of Surgery, Dr. I. Cantacuzino Clinical Hospital, Bucharest, Romania. We evaluated demographic parameters, type of LEA, the level, the laterality and trends of the amputations, the main aetiologies leading to amputation, and the length of hospitalization. Results: During the study period, 1711 patients underwent an LEA. The mean age was 64.53 ± 9.93 years, 71.6% (n = 1481) being over 60. Men outnumbered women by a ratio of 3.62:1. The most frequent interventions were ray amputations in 41.2% (n = 705) of patients; then, there were amputations of the toe (20.4%, n = 349), transtibial amputations (18.9%, n = 323), transfemoral amputations (10.6%, n = 181), and midfoot amputations (9%, n = 154). Wet gangrene was the most frequent aetiology (40.9%, n = 699). The total number of LEAs decreased constantly throughout the analysed period, such that 616 LEAs were performed in 2018 and 323 LEAs in 2021 (p &lt; 0.001). There was a statistically significant increase in the rate of major LEAs in the pandemic vs. pre-pandemic period (37% vs. 24.4%, p &lt; 0.001). Conclusions: In our study, the total number of LEAs decreased throughout the analysed period, but there was an increase in the rate of major LEAs in the pandemic vs. pre-pandemic period. Being over 65 years of age, leucocytosis, sepsis at presentation, and diabetic polyneuropathy were important risk factors for the necessity of LEA in complicated diabetes-related foot disease.

Comprehensive Validation of the German Version of the LIMB-Q.

Lower extremity trauma significantly impacts patients' lives, requiring a nuanced approach to evaluate outcomes beyond clinical measures. The LIMB-Q, a patient-reported outcome measure (PROM), assesses the multifaceted impacts of lower extremity trauma, including physical and emotional dimensions, from the patient's perspective. This study validates the German version of the LIMB-Q. We relied on the translation of the LIMB-Q that had followed the International Society for Pharmacoeconomics and Outcomes Research best practice guidelines. Sixty patients who had undergone reconstructive surgery or amputation of the lower limb completed the LIMB-Q, Lower Extremity Functional Scale (LEFS), and Short Form Health Survey (SF-36). Internal consistency of the German LIMB-Q was determined by Cronbach's alpha, and reliability was assessed using the intraclass correlation coefficient. Construct validity was analyzed using Pearson correlation coefficients between the LIMB-Q, LEFS, and SF-36. Validation involved 60 patients. Internal consistency in a test-retest subset of 5 patients was good to excellent (α: 0.891 to 0.965). The intraclass correlation coefficient for these scales ranged from 0.821 to 1. The LIMB-Q domains significantly correlated with the corresponding domains of the SF-36 and LEFS, confirming excellent construct validity. The German version of the LIMB-Q is conceptually equivalent to the original English version. It is a reliable and valid PROM for assessing physical and psychological impairments in patients who have undergone lower extremity reconstructive surgery or amputation.

Processes and approaches to perioperative pain management in patients undergoing major lower extremity amputations secondary to vascular disease: a multi-specialty modified Delphi consensus study protocol

IntroductionPain surrounding major lower extremity amputations (MLEAs) in the vascular surgical patient can be severe, conferring significant debilitation from the preoperative stage through to the chronic rehabilitation phase. Although there...

Epidemiological Analysis of Upper Extremity Amputations From Lawn Mower-Related Injuries.

Lawn mower-related injuries (LMIs) represent a complex spectrum of pathology with significant public health ramifications. The purpose of this study was to analyze the epidemiological factors associated with lawn mower upper extremity amputations. The National Electronic Injury Surveillance System (NEISS) database was queried from 2014 to 2023. National case estimates were established for upper extremity amputation events secondary to lawn mowers using diagnostic and injury-specific coding parameters. Documented cases from NEISS-participating hospitals were evaluated and injury data surrounding individual amputation events were analyzed. An estimated 17 509 upper extremity amputations occurred from 2014 to 2023 secondary to LMI in the United States. Annual case estimates and incidence rates remained relatively uniform across the 10-year study period. Most injuries were estimated to occur in 50- to 59-year-old patients. Case record review from pooled participating NEISS hospitals yielded 469 cases of upper extremity amputation directly associated with LMI from 2014 to 2023. Ninety-one percent of cases occurred in men, and most events involved the amputation of a finger (97%). Most cases of lawn mower-associated injury involved the amputation of the middle digit (41.6%) in isolation (64% of cases involved amputation of 1 digit). Despite advances in product safety and consumer education, the estimated frequency and incidence rate of upper extremity amputations secondary to LMI has remained largely unchanged over the past 10 years. When these events did occur, 40- to 60-year-old men were most often involved, most commonly leading to amputation of the third finger in isolation.

Gait Analysis of Ankle Joints of Indonesians at Low, Medium and High Speeds

Background : Amputation is a loss of body part, and most amputations are lower extremity amputations. The most common is transtibial amputation. After an amputation a person will need a prosthesis. However, up to now there has been no functional prosthesis specifically made for Indonesians who undergo transtibial amputation because the ankle joint gait data that are currently used are European gait data. So it is necessary to measure the normal gait data of Indonesians' ankle joint. The aims of this study was to measure the normal gait data of the ankle joint of Indonesian population Methods : The Research sample is Indonesians aged 18–26 years with normal gait measured by the 2DMA (two-dimensional motion analyzers) at low, medium and high speeds. The resulting data is searched for the mean and standard deviations and then an independent t-test is performed between normal gait data of Indonesians and Europeans Results : Indonesians have a range of maximum dorsiflexion values for low, medium, and high speeds of : 7.9°, 8.3°, 8.9° and maximum plantar flexion for low, medium, and high speeds of 13.4°, 20.6°, 26°. In the comparison test there was a significant difference between the maximum plantar flexion angle of Indonesians and Europeans. Conclusion : Indonesians have a range of maximum dorsiflexion values for low, medium, and high speeds of 7.9°, 8.3°, 8.9° and maximum plantar flexion for low, medium, and high speeds of: 13.4°, 20.6°, 26°. There is a difference between the normal gait of the ankle joint of Indonesians and Europeans.

Resuscitative endovascular balloon occlusion of the aorta (REBOA) in penetrating abdominal vascular injuries is associated with worse outcomes

BackgroundResuscitative endovascular balloon occlusion of the aorta (REBOA) may benefit patients with severe subdiaphragmatic traumatic hemorrhage. This study compares outcomes in patients with penetrating abdominal vascular injury treated with REBOA versus those managed without REBOA. MethodsUsing the Trauma Quality Improvement Program (TQIP) database, we identified adult patients with penetrating abdominal vascular injury from 2017 to 2022. Propensity scores matched REBOA patients 1:3 with non-REBOA patients. The primary outcome was in-hospital mortality, with secondary outcomes including 24-h mortality, transfusion needs, and complications such as acute kidney injury (AKI), deep vein thrombosis (DVT), pulmonary embolism (PE), lower extremity compartment syndrome, fasciotomy, amputation, and femoral artery repair. ResultsTwo hundred ninety-three REBOA patients were matched with 879 non-REBOA patients. REBOA patients had higher in-hospital mortality (46.8 ​% vs 36.3 ​%, p ​= ​0.002), packed-red blood cell (PRBC) transfusion requirements within 4 ​h (median 15.3 vs 8.2, p ​< ​0.001), AKI (8.5 ​% vs 4.7 ​%, p ​= ​0.013), fasciotomy (6.5 ​% vs 3.6 ​%, p ​= ​0.039), amputation (3.4 ​% vs 1.4 ​%, p ​= ​0.025), and femoral artery repair (3.4 ​% vs 0.6 ​%, p ​< ​0.001). In a subgroup analysis of patients without severe extra-abdominal injuries, REBOA was associated with higher in-hospital mortality (49.7 ​% vs. 38.2 ​%, p ​= ​0.013) and increased packed red blood cell (PRBC) transfusion requirements (median 14.1 vs. 8.3 units, p ​< ​0.001). ConclusionsIn penetrating abdominal vascular injuries, REBOA was associated with worse outcomes.

Evaluating the Efficacy of Targeted Muscle Reinnervation (TMR) in Extremities Amputations of Pedis Squamous Cell Carcinoma: A Comprehensive Systematic Review, Meta-Analysis, and Meta-regression of Functional and Pain Outcomes

Introduction Targeted Muscle Reinnervation (TMR) is an innovative surgical procedure initially designed for upper-limb amputations, which has shown growing potential for improving functional outcomes in below-knee amputees. TMR involves redirecting severed nerves from the amputated limb to nearby residual muscles, allowing these muscles to act as amplifiers for nerve signals, thereby improving prosthetic control. Recent advancements in TMR for below-knee amputations have highlighted its ability to reduce post-amputation complications, such as neuroma pain and phantom limb pain, while offering enhanced control over prosthetic limbs, thus improving mobility and quality of life. Methods Following PRISMA guidelines, a systematic review was conducted, sourcing studies up to May 2024 from PubMed, Cochrane Library, Scopus, Springer, and Epistemonikos. The analysis included randomized controlled trials (RCTs) and clinical trials. A meta-analysis was performed to assess phantom limb pain reduction, while study quality was evaluated using RoB 2.0, ROBINS-I, and ROBINS-E. Meta-regression examined the influence of variables such as age and sex on pain outcomes. Results Seven studies, including 363 patients, were analyzed. The meta-analysis showed that TMR significantly reduced phantom limb pain (MD: -1.74; 95% CI: -2.46 to -1.02; P&lt;0.00001; I2=0%). However, the pooled risk ratio for phantom pain incidence (RR: 1.58; 95% CI: 0.61 to 4.11; P=0.35; I2=93%) indicated variable outcomes. Conclusion TMR significantly reduces phantom limb pain and improves prosthetic control, particularly for patients with SCC of the foot, ultimately enhancing their quality of life.

The effect of hyperbaric oxygen therapy on oxidative stress and inflammation in patients with diabetic foot ulcers: A Preliminary Study

IntroductionPatients with an uncontrolled glycemic index develop a wide variety of pathologies associated with diabetes, such as diabetic foot ulcers (DFUs). Hyperbaric oxygen therapy (HBOT) is an adjunctive therapy used to heal wounds and prevent lower extremity amputations in this population. ObjectiveThis preliminary study aimed to evaluate how HBOT impacts inflammation in patients with Wagner stages 2-4 DFUs by analyzing its effect on the gene expression of key oxidative stress regulators SOD1, SOD2, and GPX2, of pro-inflammatory cytokines TNFα, IL-1β, IL-4, and IL-12, and of the NLRP3 inflammasome. MethodsThe effect of HBOT was assessed in 15 patients with Wagner stages 2-4 DFUs that underwent 30 sessions in the hyperbaric chamber. This protocol is registered on Clinical Trials under the title Hyperbaric Oxygen Therapy in Diabetic Foot (15/07/2024) with the number NCT06502808. Blood samples were collected, and relative gene expression was assessed by quantitative real-time polymerase chain reaction (qPCR). ResultsThe hyperbaric chamber treatment increased the expression of SOD1 and GPX2 genes (0.4 and 3 times, respectively) after 30 sessions compared to baseline levels. Similarly, the gene expression of pro-inflammatory cytokines IL-1β, IL-12, IL-4, and NLRP3 increased after 30 sessions (2.1, 0.4, 1.5, and 1.2, respectively), while the expression of the TNFα gene decreased (0.5 times). Clinically, the patients’ lesions were fully resolved. ConclusionsHBOT directly influences the gene expression of several potent antioxidants and pro-inflammatory cytokines, thus favoring angiogenesis and blood circulation in the extremities.

Trends in Peripheral Artery Disease, Lower Extremity Revascularization, and Lower Extremity Amputation in Incident Type 2 Diabetes: A Danish Population-Based Cohort Study.

To examine trends in peripheral artery disease (PAD), lower-extremity (LE) revascularization, and LE amputation in patients with incident type 2 diabetes. This cohort study included patients in Denmark diagnosed with type 2 diabetes in 1996-2015 and followed until 2020. Patients were age and sex matched with as many as three general population individuals. Outcomes comprised 5-year cumulative incidences of first-time PAD, LE revascularization, and LE amputation. Age- and sex-adjusted hazard ratios (aHRs) were computed using Cox regression. The cohort comprised 349,454 patients with incident type 2 diabetes (53% male; median age 62 years) and 1,025,054 general population individuals. Among patients with diabetes, decreases in 5-year cumulative incidence of PAD (from 6.2 to 3.4%; aHR 0.55 [95% CI 0.52-0.57]), LE revascularization (from 0.8 to 0.6%; aHR 0.80 [95% CI 0.71-0.90]), and LE amputation (from 1.0 to 0.4%; aHR 0.45 [95% CI 0.40-0.51]) occurred from 1996-2000 to 2011-2015. LE amputation decreased at all amputation levels (hip/thigh, knee/lower leg, and ankle/foot/toe) during the study period. In the general population, 5-year cumulative incidence remained stable (1.2-1.5% for PAD, ∼0.4% for LE revascularization, and ∼0.2% for LE amputation). However, the relative rates of all outcomes were two- to threefold higher in patients with diabetes than matched individuals in 2011-2015. In recent decades, the cumulative incidence of LE complications substantially decreased in patients with incident type 2 diabetes while remaining stable in the general population.

Survival rate of diabetic-related lower extremity amputees in hospitals in the Eastern Cape.

Diabetes mellitus (DM) is a global health concern that has greatly affected South Africa. The gap in the current management of DM has resulted in complications such as lower extremity amputations (LEAs) and death. Eastern Cape province reflects this struggle, with disparities in access to healthcare and poor health outcomes. Understanding survival rates and associated factors between the urban Livingstone Hospital and the rural Nelson Mandela Academic Hospital can improve health interventions and outcomes. This study compared the survival rate of patients in urban areas and those in rural areas. This retrospective cohort study was conducted in an urban and a rural hospital by reviewing existing medical records of diabetic patients who underwent an LEA between 2016 and 2019. The retrospective cohort study examined 439 diabetic-related LEA cases. This study found that residing in rural areas significantly decreased the risk of mortality by 62% compared with living in the urban areas. Factors such as haemoglobin A1c (HbA1c) levels, nephropathy, cardiovascular disease, human immunodeficiency virus (HIV), other comorbidities and level of amputation significantly influenced survival probabilities. Survival analysis indicated a significant difference in the 3-year survival probabilities of the two groups, favouring rural residency (p = 0.001). The biggest cause for concern between the two regions was uncontrolled blood glucose levels as this resulted in high mortality rates. Insights from this study have shown that introducing podiatry and orthotics at primary healthcare (PHC) could improve foot care and reduce diabetic-related LEAs and mortality.

Pregnancy after amputation: A national survey of prosthetic and mobility outcomes in women with lived experience

Background: In pregnancy, women with limb loss or deficiency or lower extremity amputations (LEAs) may experience physiologic changes affecting mobility, prosthesis use, and/or pain. However, little is known about the pregnancy-related experiences of these women. Objective: The objective of this research was to characterize pregnancy-related experiences including complications, impact on prosthesis use, gait aid use, and mobility for women with LEAs. Study Design: A national, self-administered online survey. Data were analyzed using descriptive statistics. Thematic analyses were performed on open-ended questions. Participants were women with 1 or more LEA(s) who had been pregnant within the last 5 years and were recruited via social media, LEA clinics, and word of mouth. Results: Sixteen women from 4 Canadian provinces completed the survey describing 31 pregnancies. A total of 9 had acquired LEAs and 7 had congenital LEAs. All but 1 respondent had unilateral LEAs; most common level was transfemoral (38%). All wore a prosthesis daily and were K-level 4 ambulators. Five (31%) had to decrease or stop prosthesis use, and 6 (25%) required a gait aid or wheelchair during pregnancy. The most common pregnancy-associated complications were low back pain (64%), changes to limb size/prosthesis comfort (64%), reduced balance (44%), falls (38%), and postpartum depression (25%). Conclusion: This survey is the first to describe the many unique challenges women with LEAs may experience in pregnancy and highlights important information for women with LEAs, their health care providers, their rehabilitation team, and avenues for future research.

Analyzing research trends and developments in osseointegration in patients with extremity amputations: Systematic bibliometric analysis and research recommendations.

Bone-anchored protheses (BAPs) by means of osseointegrated implants are increasingly being used in amputees with socket-related issues. Clinical advancements are being published by more and more centers worldwide. Although the number of publications and interest in BAP is growing, a systematic evaluation of scholarly output is lacking. To identify scholarly output, understand research trends and make research recommendations in the clinical field of BAP. Systematic searches in Medline All, Embase, Web of Science Core Collection, Cochrane Library, and Google Scholar were completed in February 2023. The results were deduplicated, screened, and assessed for quality by independent reviewers. Inclusion criteria were as follows: clinical studies and BAP in the extremities. Articles were excluded if they were animal or fundamental studies, nonclinical reports, had a study population less than 10 patients, or BAP was performed in areas other than extremities. One hundred twelve articles were included and published between 1993 and 2023. An annual growth rate of 10.3% was found and research was published in 62 different journals. Prosthetics and Orthotics International, Clinical Orthopaedics and Related Research and The Bone & Joint Journal were the most prolific journals. Hagberg K, Aschoff HH, and Branemark R were major contributors to BAP research. Collaborations are predominantly among high-income countries. Main research trends were on rehabilitation, questionnaires, complication managements, and implant treatment. Research on BAP shows an increasing global trend, highlighting key research areas and authors. A unified global research agenda, stakeholders' collaborations, and consensus are essential for addressing knowledge gaps and development future direction of BAP.

The MangLE score: A novel simple tool to identify patients who are unlikely to require amputation following severe lower extremity injury.

There are no validated and sensitive models that can guide the decision regarding amputation in patients with mangled lower extremities. We sought to describe a simple scoring model, the Mangled Lower Extremity (MangLE) score, which can predict those who are highly unlikely to need an amputation as a means to direct resources to this cohort. This is a retrospective study using the 2013-2021 American College of Surgeons Trauma Quality Improvement Program data set. Adult patients with a mangled lower extremity, defined as a crush injury or a fracture of the femur or tibia combined with severe soft tissue injury, arterial injury, or nerve injury, were included. Patients who suffered a traumatic lower extremity amputation, underwent amputation within 24 hours of admission, or who died within 24 hours of admission were excluded. Patients were divided into those who did/did not undergo amputation during their hospital stay. Demographics, injury mechanism, Injury Severity Score, and Abbreviated Injury Scale score, initial vital signs, and comorbid conditions were abstracted. A logistic regression model was constructed and the top five most important variables were used to create the score. The study includes 107,620 patients, of whom 2,711 (2.5%) underwent amputation. The five variables with the highest predictive value for amputation were arterial injury, lower-extremity Abbreviated Injury Scale score of ≥3, crush injury, blunt mechanism, and shock index. The lowest possible MangLE score was 0, and the highest was 15. The model demonstrated an excellent predictive ability for lower extremity amputation in both the development and validation data set with an area under the receiver operating characteristic curve of 0.81 (95% confidence interval, 0.80-0.82) and 0.82 (95% confidence interval, 0.81-0.84), respectively. The negative predictive value for a score of <8 is 99%. The MangLE score is able to identify patients who are unlikely to require amputation. Resources for limb salvage can be directed to this cohort. Prospective and Epidemiologic; Level IV.

An environmental scan of limb loss rehabilitation centers across Canada.

The clinical landscape of limb loss rehabilitation across Canada is poorly delineated, lacks standard rehabilitation guidelines, and is without a shared clinical database. To address these gaps, the objective of the present study was to undertake an environmental scan of the rehabilitation centers across Canada that provide inpatient and/or outpatient services to the limb loss community. An environmental scan was conducted to describe the rehabilitation service structure, program services, and outcome measures of sites across Canada. A survey was sent to 36 rehabilitation centers providing care to people with amputations. Of the 36 centers, 31 completed the survey (11 = Ontario; 8 = Quebec; 6 = British Columbia; 2 = Saskatchewan; 2 = New Brunswick; 1 = Alberta; 1 = Manitoba). Twenty-five provided both inpatient and outpatient services, 1 provided inpatient care only, and 5 provided only outpatient services. Interprofessional services were provided to a wide range of upper extremity amputation and lower extremity amputation patient populations. Range of motion was the most commonly collected outcome for both patients with upper extremity amputation and lower extremity amputation. With regard to prosthetics and orthotics fabrication, 9 of the sites had these services on-site while 15 had off-site fabricators, 6 had both, and 1 provided no response. Our findings highlight that limb loss rehabilitation and prosthetic care delivery is variable across Canada with respect to clinical team members, locations of services, and complementary services such as mental health treatments and peer support groups.

Investigating Nonadherence in an Integrated Diabetic Limb Salvage Programme: Reasons, Associated Factors, and Impacts on Care Outcomes.

Adherence to treatment plans is crucial for patients with diabetic foot ulcers (DFUs) to achieve positive outcomes. With limited understanding of nonadherence and its impacts on care outcomes, this study aimed to explore the reasons and factors associated with nonadherence in an integrated diabetic limb salvage (DLS) programme and evaluate its effects on care outcomes. This study included 2798 DFU patients who were enrolled in an integrated DLS programme across multiple institutions in central and northern Singapore from 2020 to 2021. Reasons for nonadherence were obtained via telephone interviews. Factors associated with nonadherence were identified using multiple logistic regression. Differences in one-year outcomes, including minor and major lower extremity amputation (LEA), mortality, LEA-free survival, and healthcare utilisation between adherent and nonadherent patients, were examined based on a significance level of P < .05. Nonadherence was observed in 40.2% of patients, with higher rates among younger patients, Malays and Indians, and those with higher HbA1c levels. Patient-related factors were the most commonly reported reasons for missed appointments (50.4%). Compared to adherent patients, nonadherent patients exhibited a relatively higher minor LEA rate (13.0% vs 10.2%, OR = 1.18, 95% CI: 0.93, 1.51), lower mortality rate (8.6% vs18.1%, OR = 0.50, 95% CI: 0.39, 0.65), higher overall LEA-free survival (76.4% vs 71.1%, OR = 1.27, 95% CI: 1.06, 1.53), and more hospitalisations (IRR = 1.22, 95% CI: 1.11, 1.33) and emergency visits (IRR = 1.27, 95% CI: 1.16, 1.39). While nonadherent patients showed relatively higher minor LEA rates and more healthcare utilisation, they also exhibited lower mortality and higher LEA-free survival. This suggests that nonadherence in this population may be associated with complex patient characteristics and behaviours that warrant further investigation to tailor interventions effectively.

Shared decision-making when deciding on lower extremity amputation level – perceived facilitators and barriers among surgeons

Shared decision-making when deciding on lower extremity amputation level – perceived facilitators and barriers among surgeons

Surgical Complications after Targeted Muscle Reinnervation at a Safety-Net Hospital.

Targeted muscle reinnervation (TMR) and regenerative peripheral nerve interface (RPNI) can reduce neuroma formation and phantom limb pain (PLP) after lower extremity (LE) amputation. These techniques have not been studied in safety-net hospitals. This study aims to examine the surgical complication rates after TMR and/or RPNI at an academic safety-net hospital in an urban setting. This was a retrospective review of patients older than 18 years who had prior above-knee guillotine amputation (AKA) or below-knee guillotine amputation (BKA) and underwent stump formalization with TMR and/or RPNI from 2020 to 2022. Demographics, medical history, and operative and postoperative characteristics were collected. The primary outcome was any surgical complication, defined as infection, dehiscence, hematoma, neuroma, or reoperation. Univariate analysis was conducted to identify variables associated with surgical complications and PLP. Thirty-two patients met the inclusion criteria. The median age was 52 years, and 75% were males. Indications for amputation included diabetic foot infection (71.9%), necrotizing soft tissue infection (25.0%), and malignancy (3.1%). BKA was the most common indication for formalization (93.8%). Most patients (56.3%) had formalization with TMR and RPNI, 34.4% patients had TMR only, and 9.4% had RPNI alone. The incidence of postoperative complications was 46.9%, with infection being the most common (31.3%). The median follow-up time was 107.5 days. There was no significant difference in demographics, medical history, or operative characteristics between patients who did and did not have surgical complications. However, there was a trend toward higher rates of PLP in patients who had a postoperative wound infection (p = 0.06). Overall complication rates after LE formalization with TMR and/or RPNI at our academic safety-net hospital were consistent with reported literature. Given the benefits, including reduced chronic pain and lower health care costs, we advocate for the wider adoption of these techniques at other safety-net hospitals.

Twenty-year trends in peripheral artery disease, lower extremity revascularization, and lower extremity amputation in newly diagnosed type 2 diabetes

Abstract Background Trends in risk of lower extremity complications in patients with newly diagnosed type 2 diabetes (T2DM) are largely unexplored. Purpose To examine the 5-year risk trends of peripheral artery disease (PAD), lower extremity revascularization (LER), and lower extremity amputation (LEA) in patients with newly diagnosed T2DM over a 25-year study period. Methods We conducted a cohort study that included all patients in Denmark diagnosed with T2DM from 1996 to 2015, who had no prior hospital diagnosis of atherosclerotic cardiovascular disease. These patients were age- and sex-matched with up to three comparisons from the general population. Individuals were assigned to 5-year calendar periods based on their year of inclusion and were followed for 5 years. The primary outcomes were the 5-year risks of PAD, LER, and LEA. Age- and sex-adjusted hazard ratios (aHR) were computed using Cox regression analysis. Results The study cohort consisted of 288,825 newly diagnosed T2DM patients (52% males; median age 61 years) and 782,232 comparisons from the general population. From 1996-2000 to 2015-2020, the 5-year risk of PAD decreased from 2.2% to 1.2% (aHR 0.56 [95% CI 0.52-0.61]), LER from 0.7% to 0.5% (aHR 0.73 [95% CI 0.63-0.84]), and LEA from 1.0% to 0.4% (aHR 0.44 [95% CI 0.38-0.50]) in T2DM patients (Figure). Compared with the general population, the 5-year risk differences decreased from 1.4% to 0.5% for PAD, from 0.4% to 0.2% for LER, and from 0.8% to 0.3% for LEA. The distribution of LEA types (hip/thigh, knee/lower leg, or ankle/foot/toe amputation) remained largely stable over time in T2DM patients. Use of prophylactic cardiovascular medications in T2DM patients increased notably during the study period, especially use of statins (5% to 50%) and multiple antihypertensive drugs (18% to 33%). Conclusions Over recent decades, the risks of PAD, LER, and LEA have decreased in patients with newly diagnosed T2DM, approaching the risk levels observed in the general population. This coincided with a great increase in use of prophylactic cardiovascular medications among T2DM patients.Trends in lower extremity complications.