Cochrane · systematic review · CD011378

Nutritional interventions for treating foot ulcers in people with diabetes

Moore, ZEH, Corcoran, MA, Patton, D · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

WoundsAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
58
current version
GRADE rated
23
No studies
35
Included studies
NR
No studies 35 · 60.3%Ungraded 0 · 0%Very low 23 · 39.7%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
6 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time)
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
no estimate extractedNRNo studies
Ulcer healing (proportion of ulcers healed)
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
RR 0.8 [0.42, 1.53]1 study · 53 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Quality of life
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
no estimate extractedNRNo studies
Adverse events (death)
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
RR 0.96 [0.06, 14.6]1 study · 53 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Development of any new foot ulcers
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
no estimate extractedNRNo studies
Amputation rate
Oral nutritional supplement with 20 g protein per 200 mL bottle, 1 kcal/mL, nutritional supplement with added vitamins, minerals and trace elements vs placebo
RR 4.82 [0.24, 95.88]1 study · 53 participantsVery low
Downgraded: risk of bias, imprecision, indirectness

Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
6 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time)
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
no estimate extractedNRNo studies
Ulcer healing (proportion of ulcers healed)
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
RR 1.09 [0.85, 1.4]1 study · 270 participantsVery low
Downgraded: imprecision, indirectness
Quality of life
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
no estimate extracted1 study · 270 participantsVery low
Downgraded: imprecision, indirectness
Adverse events
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
RR 1.041 study · 270 participantsVery low
Downgraded: imprecision, indirectness
Amputation rate
Arginine, glutamine and β‐hydroxy‐β‐methylbutyrate supplement vs placebo
RR 0.66 [0.16, 2.69]1 study · 270 participantsVery low
Downgraded: imprecision, indirectness

220 mg zinc sulphate supplement containing 50 mg elemental zinc versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
8 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound length reduction)
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound depth reduction)
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound width reduction)
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extractedNRNo studies
Quality of life
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extractedNRNo studies
Adverse events
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extractedNRNo studies
Amputation rate
220 mg zinc sulphate supplement containing 50 mg elemental zinc vs placebo
no estimate extractedNRNo studies

250 mg magnesium oxide supplement versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
8 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound length reduction)
250 mg magnesium oxide supplement vs placebo
no estimate extracted1 study · 70 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound depth reduction)
250 mg magnesium oxide supplement vs placebo
no estimate extracted1 study · 70 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound width reduction)
250 mg magnesium oxide supplement vs placebo
no estimate extracted1 study · 70 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
250 mg magnesium oxide supplement vs placebo
no estimate extractedNRNo studies
Quality of life
250 mg magnesium oxide supplement vs placebo
no estimate extractedNRNo studies
Adverse events
250 mg magnesium oxide supplement vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
250 mg magnesium oxide supplement vs placebo
no estimate extractedNRNo studies
Amputation rate
250 mg magnesium oxide supplement vs placebo
no estimate extractedNRNo studies

1000 mg/day omega‐3 fatty acid from flaxseed oil supplement versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
8 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound length reduction)
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound depth reduction)
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound width reduction)
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extractedNRNo studies
Quality of life
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extractedNRNo studies
Adverse events
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extractedNRNo studies
Amputation rate
1000 mg/day omega‐3 fatty acid from flaxseed oil supplement vs placebo
no estimate extractedNRNo studies

150,000 IU of vitamin D versus 300,000 IU of vitamin D for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
6 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound area)
150,000 IU of vitamin D vs 300,000 IU of vitamin D
MD 0.611 study · 47 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
150,000 IU of vitamin D vs 300,000 IU of vitamin D
no estimate extractedNRNo studies
Quality of life
150,000 IU of vitamin D vs 300,000 IU of vitamin D
no estimate extractedNRNo studies
Adverse events
150,000 IU of vitamin D vs 300,000 IU of vitamin D
no estimate extractedNRNo studies
Development of any new foot ulcers
150,000 IU of vitamin D vs 300,000 IU of vitamin D
no estimate extractedNRNo studies
Amputation rate
150,000 IU of vitamin D vs 300,000 IU of vitamin D
no estimate extractedNRNo studies

Magnesium and vitamin E co‐supplementation versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
8 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound length)
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extracted1 study · 57 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound depth)
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extracted1 study · 57 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound width)
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extracted1 study · 57 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extractedNRNo studies
Quality of life
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extractedNRNo studies
Adverse events
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extractedNRNo studies
Amputation rate
Magnesium and vitamin E co‐supplementation vs placebo
no estimate extractedNRNo studies

Vitamin D versus placebo for treating foot ulcers in people with diabetes

Population: people with diabetes and foot ulcers
8 questions
OutcomeEffectEvidenceStatus / GRADE
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound length reduction
Vitamin D vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound depth reduction
Vitamin D vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (absolute change in individual parameters of ulcer dimensions over time: mean (SD) cm wound width reduction
Vitamin D vs placebo
no estimate extracted1 study · 60 participantsVery low
Downgraded: imprecision, indirectness
Ulcer healing (proportion of ulcers healed)
Vitamin D vs placebo
no estimate extractedNRNo studies
Quality of life
Vitamin D vs placebo
no estimate extractedNRNo studies
Adverse events
Vitamin D vs placebo
no estimate extractedNRNo studies
Development of any new foot ulcers
Vitamin D vs placebo
no estimate extractedNRNo studies
Amputation rate
Vitamin D vs placebo
no estimate extractedNRNo studies