The Medial Antebrachial Cutaneous Nerve Is a Low-Morbidity Alternative to the Standard Sural Nerve Autograft

BACKGROUND

Nerve interposition grafting is an important technique in nerve reconstructive surgery that is used when a primary repair is not feasible without significant tension. This study sought to evaluate the long-term morbidity of the medial antebrachial cutaneous (MABC) nerve as an alternative donor nerve in comparison with sural nerve harvest.

METHODS

A single surgeon and institution retrospective chart review was performed to identify all patients who underwent nerve autografting using the sural and MABC as donor nerves between January 1, 2000 and December 31, 2019. Surveys assessed overall patient satisfaction with surgery, as well as donor and recipient site morbidity, satisfaction, pain, numbness, and cold sensitivity.

RESULTS

Of the 73 patients contacted, 54 agreed to participate, and 43 of 73 (58.9%) ultimately completed the survey: 28 MABC (65.1%) and 15 sural (34.9%). There were no significant differences between the sural and MABC groups in overall satisfaction with surgery, donor and recipient site satisfaction, pain, cold sensitivity, and effect on quality of life. Even though 66.7% of sural donor sites and 75% of MABC donor sites had residual numbness, the effect this had on quality of life was very low (2 and 3, respectively).

CONCLUSION

The MABC is a safe alternative to the traditional sural nerve autograft. A small subset of patients undergoing nerve autograft harvest will experience long-term morbidity in the form of pain. Conversely, the more common presence of numbness is not reported as bothersome.

Evaluating Diversity Promotion on Integrated Plastic Surgery Residency Program Websites and Instagram Accounts

BACKGROUND

Medical students applying to residency, including those from underrepresented groups, strongly value cultural fit and program diversity. Program websites and social media are thus an influential information source for prospective applicants and recruitment tool for residencies. We evaluated whether and how integrated plastic surgery residency program websites and social media display commitments to diversity online.

METHODS

We evaluated program websites for 8 predetermined diversity elements, (1) nondiscrimination and (2) diversity statements, (3) community resources, (4) faculty and (5) resident biographies, (6) faculty and (7) resident photographs, and (8) resident resources, and assessed Instagram accounts for diversity-related images, captions, and hashtags. Our analysis used Mann-Whitney U , chi-squared, and t tests; significance level was P < 0.05.

RESULTS

We reviewed 82 program websites with a mean of 3.4 ± 1.4 diversity elements. Resident (n = 76, 92.7%) and faculty photographs (n = 65, 79.3%) and resident biographies (n = 43, 52.4%) were the most common. Seventy programs (85.4%) had Instagram accounts, the majority of which (n = 41, 58.6%) shared content related to diversity in race, ethnicity, gender, and/or sexual orientation. Programs located in smaller cities were more likely to have ≥4 website diversity elements ( P = 0.014) and mention diversity on Instagram ( P = 0.0037). Programs with women chairs/chiefs were more likely to mention diversity on Instagram ( P = 0.007).

CONCLUSIONS

In the age of virtual recruitment, program websites and social media should provide sufficient information, described in our diversity element checklist, to help prospective applicants determine fit from a diversity perspective. Residents, who often contribute to program social media, and women chairs/chiefs may be critical to driving diversity promotion.

Loss of Gata1 decreased eosinophils, macrophages, and type 2 cytokines in regenerating nerve and delayed axon regeneration after a segmental nerve injury

The immune system has garnered attention for its role in peripheral nerve regeneration, particularly as it pertains to regeneration across segmental injuries. Previous work demonstrated that eosinophils are recruited to regenerating nerve and express interleukin-4, amongst potential cytokines. These results suggest a direct role for eosinophils in promoting nerve regeneration. Therefore, we further considered eosinophils roles in nerve regeneration using a segmental nerve injury and Gata1 knockout (KO) mice, which are severely eosinophil deficient, compared to wild-type BALB/c mice (WT). Mice receiving a sciatic nerve gap injury demonstrated distinct cytokine expression and leukocytes within regenerating nerve. Compared to controls, Gata1 KO regenerated nerves contained decreased expression of type 2 cytokines, including Il-5 and Il-13, and decreased recruitment of eosinophils and macrophages. At this early time point during ongoing regeneration, the macrophages within Gata1 KO nerves also demonstrated significantly less M2 polarization compared to controls. Subsequently, motor and sensory axon regeneration across the gap injury was decreased in Gata1 KO compared to WT during ongoing nerve regeneration. Over longer observation to allow for more complete nerve regeneration, behavioral recovery measured by grid-walk assessment was not different comparing groups but modestly delayed in Gata1 KO compared to WT. The extent of final axon regeneration was not different amongst groups. Our data provide additional evidence suggesting eosinophils contribute to nerve regeneration across a nerve gap injury, but are not essential to regeneration in this context. Our evidence also suggests eosinophils may regulate cytokines that promote distinct macrophage phenotypes and axon regeneration.