Successful Limb-sparing Treatment Strategy for Diabetic Foot Osteomyelitis

2012 ◽  
Vol 102 (4) ◽  
pp. 273-277 ◽  
Author(s):  
Alison M. Beieler ◽  
Timothy C. Jenkins ◽  
Connie S. Price ◽  
Carla C. Saveli ◽  
Merribeth Bruntz ◽  
...  
Keyword(s):  
Limb Salvage ◽  
Antimicrobial Therapy ◽  
Diabetic Foot ◽  
Surgical Margin ◽  
Initial Therapy ◽  
Surgical Debridement ◽  
Knee Amputation ◽  
End Point ◽  
Below The Knee ◽  
Diabetic Foot Osteomyelitis

Background: Diabetic foot osteomyelitis is common and causes substantial morbidity, including major amputations, yet the optimal treatment approach is unclear. We evaluated an approach to limb salvage that combines early surgical debridement or limited amputation with antimicrobial therapy. Methods: We conducted a retrospective cohort study of patients treated between May 1, 2005, and May 31, 2007. The primary end point was cure, defined as not requiring further treatment for osteomyelitis of the affected limb. The secondary end point was limb salvage, defined as not requiring a below-the-knee amputation or a more proximal amputation. Results: Fifty patients with diabetic foot osteomyelitis met the study criteria. Initial surgical management included local amputation in 43 patients (86%) and debridement without amputation in seven (14%). Most infections (n = 30; 60%) were polymicrobial, and Staphylococcus aureus was the most common pathogen (n = 23; 46%). Parenteral antibiotics were used in 45 patients (90%). Patients who had pathologic evidence of osteomyelitis at the surgical margin received therapy for a median of 43 days (interquartile range [IQR], 36–56 days), whereas those without evidence of residual osteomyelitis received therapy for a median of 19 days (IQR, 13–40 days). Overall, 32 patients (64%) were considered cured after a median follow-up of 26 months (IQR, 12–38 months). Fifteen of 18 patients (83%) who failed initial therapy were treated again with limb-sparing surgery. Limb salvage was achieved in 47 patients (94%), with only three patients (6%) requiring below-the-knee amputation. Conclusions: In patients with diabetic foot osteomyelitis, surgical debridement or limited amputation plus antimicrobial therapy is effective at achieving clinical cure and limb salvage. (J Am Podiatr Med Assoc 102(4): 273–277, 2012)

Risk Factors for Below-the-Knee Amputation in Diabetic Foot Osteomyelitis After Minor Amputation

2019 ◽  
Vol 109 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Whitney Miller ◽  
Chrystal Berg ◽  
Michael L. Wilson ◽  
Susan Heard ◽  
Bryan Knepper ◽  
...  
Keyword(s):  
Risk Factors ◽  
Diabetic Foot ◽  
Interquartile Range ◽  
Knee Amputation ◽  
Below The Knee ◽  
Minor Amputation ◽  
Increased Risk ◽  
Transmetatarsal Amputation ◽  
The Impact ◽  
Diabetic Foot Osteomyelitis

Background:Below-the-knee amputation (BKA) can be a detrimental outcome of diabetic foot osteomyelitis (DFO). Ideal treatment of DFO is controversial, but studies suggest minor amputation reduces the risk of BKA. We evaluated risk factors for BKA after minor amputation for DFO.Methods:This is a retrospective cohort of patients discharged from Denver Health Medical Center from February 1, 2012, through December 31, 2014. Patients who underwent minor amputation for diagnosis of DFO were eligible for inclusion. The outcome evaluated was BKA in the 6 months after minor amputation.Results:Of 153 episodes with DFO that met the study criteria, 11 (7%) had BKA. Failure to heal surgical incision at 3 months (P < .001) and transmetatarsal amputation (P = .009) were associated with BKA in the 6 months after minor amputation. Peripheral vascular disease was associated with failure to heal but not with BKA (P = .009). Severe infection, bacteremia, hemoglobin A1c, and positive histopathologic margins of bone and soft tissue were not associated with BKA. The median antibiotic duration was 42 days for positive histopathologic bone resection margin (interquartile range, 32–47 days) and 16 days for negative margin (interquartile range, 8–29 days). Longer duration of antibiotics was not associated with lower risk of BKA.Conclusions:Patients who fail to heal amputation sites in 3 months or who have transmetatarsal amputation are at increased risk for BKA. Future studies should evaluate the impact of aggressive wound care or whether failure to heal is a marker of another variable.

scholarly journals Risk Factors for Below the Knee Amputation in Diabetic Foot Osteomyelitis

2015 ◽  
Vol 2 (suppl_1) ◽  
Author(s):  
Whitney Hernandez ◽  
Heather Young ◽  
Bryan Knepper ◽  
Susan Heard ◽  
Michael Wilson
Keyword(s):  
Risk Factors ◽  
Diabetic Foot ◽  
Knee Amputation ◽  
Below The Knee ◽  
Diabetic Foot Osteomyelitis

scholarly journals 318. Deferring Amputation in Diabetic Foot Osteomyelitis: Doing more Harm than Good?

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S231-S232
Author(s):  
Shiwei Zhou ◽  
Brian M Schmidt ◽  
Oryan Henig ◽  
Keith S Kaye
Keyword(s):  
Diabetic Foot ◽  
Medical Management ◽  
Wound Care ◽  
Cohort Analysis ◽  
Severity Of Illness ◽  
Complete Healing ◽  
Knee Amputation ◽  
Management Group ◽  
One Year ◽  
Diabetic Foot Osteomyelitis

Abstract Background Diabetic foot osteomyelitis (DFO) is a leading cause of below knee amputation (BKA). Even when medical treatment is deemed unlikely to succeed, patients with DFO are often resistant to amputation. Methods An observational cohort analysis was done on patients with DFO at Michigan Medicine who were evaluated by podiatry and recommended BKA from Oct 2015 - Jun 2019. Primary outcome was mortality after BKA recommendation. Secondary outcomes were healing of affected limb, rate of BKA or above knee amputation (AKA) and total antibiotic days in the 6 months following. All intravenous antibiotics and oral courses of linezolid and fluoroquinolones were captured. Results Of 44 patients with DFO, 18 chose BKA, 26 chose medical management with wound care. Mean age of the cohort was 61, 68% male, 80% white with a median Charlson Comorbidity Index of 6 (IQR 4,7). The two groups were similar with regards to demographics and comorbid conditions. Those who chose medical management did so because their infection was non-life-threatening and they desired to avoid amputation. One-year mortality was greater in patients who were medically managed compared to those who had BKA (23.1% vs 0%, OR 11.7, 95% CI 0.6–222.9). Considering only the 33 patients who were followed for at least 2 years, 2-year mortality was also greater in the medically managed group compared to the BKA group (38.5% vs 5.6%, OR 10.6, 95% CI 1.2–92.7, Figure 1). Fewer patients in the medical management group had complete healing of their wound/stump compared to the BKA group (46.2% vs 88.9%, OR 9.3, 95% CI 1.8–49.1). In the medically managed group, 18 (69%) patients went on to require BKA or AKA at a median of 76.5 days compared to 2 (11%) in the BKA group who required AKA at 1 and 11 days following recommendation. Median antibiotic days were significantly greater in the medically managed group compared to the BKA group (55 IQR 42,78 vs 17 IQR 10,37, p=0.0017). Conclusion In this cohort of DFO patients where BKA was recommended, medical management was associated with increased mortality, poor healing of the affected limb, and excess antibiotic exposure compared to BKA. These findings are particularly notable as case mix and severity of illness were similar between the two groups. This study can be used to inform providers and patients in cases where BKA is recommended. Disclosures All Authors: No reported disclosures

scholarly journals A multicenter randomized placebo controlled trial of rifampin to reduce pedal amputations for osteomyelitis in veterans with diabetes (VA INTREPID)

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Mary T. Bessesen ◽  
Gheorghe Doros ◽  
Adam M. Henrie ◽  
Kelly M. Harrington ◽  
John A. Hermos ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
United States ◽  
Antimicrobial Therapy ◽  
Diabetic Foot ◽  
Adjunctive Therapy ◽  
The United States ◽  
Quality Data ◽  
Free Survival ◽  
Primary Hypothesis ◽  
Diabetic Foot Osteomyelitis

Abstract Background The prevalence of diabetes mellitus continues to inexorably rise in the United States and throughout the world. Lower limb amputations are a devastating comorbid complication of diabetes mellitus. Osteomyelitis increases the risk of amputation fourfold and commonly presages death. Antimicrobial therapy for diabetic foot osteomyelitis (DFO) varies greatly, indicating that high quality data are needed to inform clinical decision making. Several small trials have indicated that the addition of rifampin to backbone antimicrobial regimens for osteomyelitis outside the setting of the diabetic foot results in 28 to 42% higher cure rates. Methods/design This is a prospective, randomized, double-blind investigation of the addition of 6 weeks of rifampin, 600 mg daily, vs. matched placebo (riboflavin) to standard-of-care, backbone antimicrobial therapy for DFO. The study population are patients enrolled in Veteran Health Administration (VHA), ages ≥18 and ≤ 89 years with diabetes mellitus and definite or probable osteomyelitis of the foot for whom an extended course of oral or intravenous antibiotics is planned. The primary endpoint is amputation-free survival. The primary hypothesis is that using rifampin as adjunctive therapy will lower the hazard rate compared with the group that does not use rifampin as adjunctive therapy. The primary hypothesis will be tested by means of a two-sided log-rank test with a 5% significance level. The test has 90% power to detect a hazard ratio of 0.67 or lower with a total of 880 study participants followed on average for 1.8 years. Discussion VA INTREPID will test if a rifampin-adjunctive antibiotic regimen increases amputation-free survival in patients seeking care in the VHA with DFO. A positive finding and its adoption by clinicians would reduce lower extremity amputations and their associated physical and emotional impact and reduce mortality for Veterans and for the general population with diabetic foot osteomyelitis. Given that rifampin-adjunctive regimens are currently employed for therapy for the majority of DFO cases in Europe, and only in a small minority of cases in the United States, the trial results will impact therapeutic decisions, even if the null hypothesis is not rejected. Trial registration Registered January 6, 2017 at ClinicalTrials.gov, NCT03012529.

Diabetic Limb Salvage

2002 ◽  
Vol 92 (8) ◽  
pp. 457-462 ◽  
Author(s):  
Chad DeNamur ◽  
Guy Pupp
Keyword(s):  
At Risk ◽  
Lower Extremity ◽  
Limb Salvage ◽  
Retrospective Review ◽  
Diabetic Patients ◽  
Team Approach ◽  
Salvage Procedure ◽  
Knee Amputation ◽  
Below The Knee ◽  
Limb Salvage Procedure

In this retrospective review, 19 diabetic patients with significant lower-extremity pathology were assessed to determine the success of limb salvage in cases of varying complexity. The patients were either scheduled or at risk for below-the-knee amputation before intervention. After the limb-salvage procedure, patients were followed for 4 months to 9 years. Eighteen patients went on to have successful procedures, avoiding below-the-knee amputation; one patient had an above-the-knee amputation. The results demonstrate the benefits of an aggressive team approach with limb salvage as a goal. (J Am Podiatr Med Assoc 92(8): 457-462, 2002)

scholarly journals 109. Evaluating Predictive Value of Surgical Resected Proximal Bone Margins in Diabetic Foot Osteomyelitis with Clinical Outcomes at One Year

2021 ◽  
Vol 8 (Supplement_1) ◽  
pp. S67-S67
Author(s):  
Bruce Weng ◽  
Yasmin Oskooilar ◽  
Bishoy Zakhary ◽  
Chiao An Chiu ◽  
Nikki Mulligan ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Clinical Outcomes ◽  
Antimicrobial Therapy ◽  
Diabetic Foot ◽  
Hemoglobin A1c ◽  
Smoking History ◽  
Positive Margins ◽  
Antibiotic Duration ◽  
One Year ◽  
Diabetic Foot Osteomyelitis

Abstract Background Diabetic foot osteomyelitis (DFO) remains a significant comorbidity in diabetes and often requires both surgical and medical interventions. Surgical bone resection with proximal margins is performed for treatment at our institution to guide antimicrobial therapy. Optimal antibiotic duration often remains unclear, along with clinical outcomes with negative margins. We evaluate if negative bone margins predict outcomes of DFO at one year in our county hospital. Methods A retrospectively cohort study assessed adult patients undergoing DFO amputations between 9/2016 to 9/2019. Patient data collected included demographics, smoking history, hemoglobin A1c (HbA1c), basic labs, microbiology, antibiotic duration, bone margin pathology. Physician review of records determined if intervention was successful. Primary outcome was met if no further amputation at the same site was required in the following 12 months. Results Of 92 patients, 57 had negative margins and 35 had positive margins for pathology confirmed osteomyelitis. Smoking history was significant in positive margins (35.1% vs 57.1%; p=0.038). Patients with negative margins had a successful outcome at 12 months compared to positive margins (86% vs 66%; p=0.003), but no significant differences in outcome at 6 months. Antibiotic days was reduced in negative margin individuals (mean 18 vs 30 days; p=0.001). Negative margins also demonstrated significant lower rates of readmission at 12 months (p=0.015). Staphylococcus aureus was notable in positive vs negative margins (57.1% vs 29.8%; p=0.017). MSSA was significantly noted in positive margins (45.7% vs 14%; p=0.001). MRSA was similar regardless of margin results (15.8% vs 11.4%; p=0.399). Initial ESR, CRP and HbA1c were similar between groups. Conclusion Our study noted that negative proximal bone margins resulted in more successful outcomes at 12 months and less days of antimicrobial therapy. Patients with negative margins had lower rates of readmission at 12 months for surgical site complications. Negative proximal bone margins results can guide antibiotic therapy and improve outcomes of resections. Presence of S. aureus was significant in positive margins and likely warrant consideration for further aggressive intervention. Clinical Characteristics of Patients with Diabetic Foot Osteomyelitis Clinical demographics, antibiotic usage, microbiology and results of patients presenting for diabetic foot osteomyelitis needing surgical amputation intervention. Abbreviations: HbA1c - Hemoglobin A1c; MSSA - methicillin-susceptible Staphylococcus aureus; MRSA - methicillin-resistant Staphylococcus aureus; CRP -C-reactive protein; ESR - erythrocyte sedimentation rate Disclosures All Authors: No reported disclosures

Admission Time Deep Swab Specimens Compared With Surgical Bone Sampling in Hospitalized Individuals With Diabetic Foot Osteomyelitis and Soft Tissue Infection

2020 ◽  
pp. 153473462091638 ◽  
Author(s):  
Ana Belen Manas ◽  
Surabhi Taori ◽  
Raju Ahluwalia ◽  
Hani Slim ◽  
C. Manu ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Antibiotic Therapy ◽  
Soft Tissue Infection ◽  
Diabetic Foot ◽  
Tissue Infection ◽  
Surgical Debridement ◽  
Deep Wound ◽  
Negative Growth ◽  
Diabetic Foot Osteomyelitis ◽  
Prior Antibiotic Therapy

Whether deep swab cultures taken at admission reliably identify pathogens compared to surgical bone specimens in hospitalized individuals with diabetic foot osteomyelitis and soft tissue infection is unclear. Comparison of microbiological isolates between a deep wound swab (DWS) taken at the time of admission through the actively infected, discharging ulcer probing to the bone and the subsequent surgical bone sample (SBS) taken during surgical debridement was made. A total of 63 subjects (age 60.8 ± 13.5 years, 75% male, 80% Type 2 diabetes, HbA1C 8.9%±2.2%) were included. The proportion of Gram-positive (DWS 49% v SBS 52%) and Gram-negative (DWS 60% v SBS 60%) isolates was similar between the techniques. However, the overall concordance of isolates between the two techniques was only fair (κ=0.302). The best concordance was observed for Staphylococcus aureus (κ=0.571) and MRSA (κ=0.644). There was a correlation between number of isolates in SBS with prior antibiotic therapy of any duration (r= -0.358, p=0.005) and with the duration of ulceration (r=0.296, p=0.045); no clinical correlations were found for DWS. Prior antibiotic therapy (p=0.03) and duration of ulceration <8 weeks (p=0.025) were predictive of negative growth on SBS. In conclusion, we found only a fair concordance between deep wound swabs acquired at admission and surgical bone specimens in those presenting with a severe diabetic foot infection and features of osteomyelitis. Ensuring early surgical debridement of all infected tissue and obtaining bone specimens should be considered a clinical priority, which may also reduce the likelihood of negative growth on SBS.

scholarly journals Deferring Amputation in Diabetic Foot Osteomyelitis: Doing More Harm Than Good?

2021 ◽  
Author(s):  
Shiwei Zhou ◽  
Brian M Schmidt ◽  
Oryan Henig ◽  
Keith S Kaye
Keyword(s):  
Medical Therapy ◽  
Diabetic Foot ◽  
Knee Amputation ◽  
Diabetic Foot Osteomyelitis

Abstract In a cohort of patients with diabetic foot osteomyelitis who were recommended to undergo below-knee amputation, those who deferred amputation and chose medical therapy were more likely to die during the follow up time compared to those who proceeded with amputation.

Sign in / Sign up

Export Citation Format

Share Document