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Updated: Jan 18, 2026
Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Elevated Preoperative Hemoglobin A1c Associated with Increased Wound Complications in Diabetic Patients Undergoing
Daniel J Cunningham1, Rita E Baumgartner1, Andrew E Federer1
1From the Department of Orthopaedic Surgery, Duke University Medical Center.
Insights
Diabetic patients with a hemoglobin A1c of 7.8% or higher face increased wound healing complications after carpal tunnel release. Poor glycemic control elevates surgical risks, suggesting potential benefits from optimizing blood sugar before the procedure.
Area of Science:
- Orthopedic Surgery
- Endocrinology
- Diabetic Complications
Background:
- Elevated hemoglobin A1c is linked to complications in orthopedic procedures like arthroplasty and spine surgery.
- The study focuses on the impact of high hemoglobin A1c on postoperative complications specifically after carpal tunnel release.
Purpose of the Study:
- To investigate the association between elevated hemoglobin A1c levels and postoperative complications in patients undergoing carpal tunnel release.
- To identify specific risks related to glycemic control in diabetic patients undergoing this common hand surgery.
Main Methods:
- Retrospective cohort study of diabetic patients within 90 days of primary, open carpal tunnel release.
- Analysis of preoperative hemoglobin A1c values using chi-square and multivariable models.
- Evaluation of outcomes including infection, delayed wound healing, and persistent symptoms.
Main Results:
- A hemoglobin A1c value of 7.8% or higher was significantly associated with increased risk of all-cause wound healing complications (OR 4.2, p=0.049).
- 4% of patients experienced delayed wound healing, 4% developed superficial infections, and 4% reported persistent carpal tunnel symptoms.
Conclusions:
- Diabetic patients with hemoglobin A1c ≥7.8% undergoing open carpal tunnel release have higher rates of postoperative wound complications.
- Patients with poor glycemic control should be informed of increased surgical risks.
- Further research is needed to determine if delaying surgery for glucose control optimization can reduce complications.
Background:
An increased rate of complications has been demonstrated with increasing hemoglobin A1c value for a variety of orthopedic procedures, including arthroplasty and spine surgery. The authors investigated the effects of elevated hemoglobin A1c value on postoperative complications at the time of carpal tunnel release.
Methods:
This retrospective, cohort study evaluated all diabetic patients with a preoperative hemoglobin A1c value within 90 days of primary, open carpal tunnel release at a single academic institution within the past 10 years. Binary hemoglobin A1c thresholds were tested for association with outcomes of superficial or deep infection, delayed wound healing, and persistent symptoms using chi-square analysis. Multivariable models with adjustment for baseline and operative factors were then constructed. Odds ratios and 95 percent confidence intervals were displayed.
Results:
Hemoglobin A1c value greater than or equal to 7.8 percent was most strongly associated with an increased risk of all-cause wound healing complications (p = 0.049) at an odds ratio of 4.2 (95 percent CI, 1.0 to 17.7) in adjusted analyses. Six patients (4 percent) experienced delayed wound healing and five patients (4 percent) developed a superficial infection. Six patients (4 percent) reported persistent carpal tunnel syndrome symptoms.
Conclusions:
Diabetic patients undergoing open, primary carpal tunnel release with a hemoglobin A1c value of 7.8 percent or higher had a higher rate of postoperative wound complications compared to diabetic patients with improved preoperative glucose control. Diabetics with poor glycemic control should be counseled that their risk of postoperative complication is higher. Further work is needed to determine whether delaying surgery to optimize glucose control could result in a reduction of wound healing complications.
Clinical Question/Level Of Evidence:
Risk, II.
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