Wound Healing: Cellular Review With Specific Attention to Postamputation Care.

Wound healing is crucial for survival, prevention of infection, and restoration of tissue function. The immune system drives this process with 3 main phases: inflammation, proliferation, and remodeling. Keloids and hypertrophic scars reveal disruptions in these phases, underscoring the balance needed for healing. Limb amputation, a life-changing event, demands careful consideration for healing and function. Factors such as amputation level, surgical technique, and prosthetic fitting shape outcomes, while complications such as heterotopic ossification challenge recovery. Treatment advances including statins and stem cell therapy hold promise, with dermatologists poised to contribute substantially to postamputation care.

Cervical Disc Displacement in Military Pilots.

INTRODUCTION: Cervical disc displacement (CDD) may disqualify pilots from flying and have a profound impact on military unit capability. The objective of this retrospective database review is to characterize the incidence and demographic predictors of symptomatic cervical spine disc displacement in pilots of fixed- and rotary-wing aircraft and ground-based controls. MATERIALS AND METHODS: The Defense Military Epidemiology Database was queried for first-occurrence ICD-9 code 722.0: CDD cases from 2007 to 2015. Injury count rates among aircraft groups and overall incidence per 1,000 person-years were calculated and standardized for age, gender, and military rank, and 95% confidence intervals (CIs) were compared to determine significance. RESULTS: There were 934 new cases of CDD among active duty U.S. Military pilots during the study period. The overall incidence of CDD in all pilots during this time frame was 2.715 per 1,000 person-years (95% CI, 2.603-2.830). Helicopter pilots had a significantly higher incidence compared to all other aircraft pilots and crew at 3.79 per 1,000 person-years (95% CI, 3.48-4.13). This finding remained statistically significant after standardizing for age, gender, and rank. Among all military officers, increasing age was a risk factor for CDD. CONCLUSIONS: The U.S. Military helicopter pilots have an increased risk compared to fixed-wing pilots and non-pilot controls. CDD remains a rare, though career-threatening, condition. Increased education and awareness training are warranted for both helicopter pilots and flight physicians to recognize signs and symptoms of cervical pathology. Continued investigations into preventive measures to minimize injury and time unfit for flight are warranted.

Incidence of Shoulder Labral Pathology in United States Military Members.

INTRODUCTION: Shoulder injuries account for approximately 8% to 24% of all musculoskeletal injuries in the military. Recently, a change was made to service-specific physical fitness tests. Knowledge of relative shoulder labral injury rates before and after this change would help guide future directions and preventive strategies. However, we found no previous literature evaluating the rates of labral injury among United States Military branch personnel by enlistment status (enlisted versus officer), gender, age, or race. MATERIALS AND METHODS: In this retrospective epidemiological study, we queried the Defense Medical Epidemiology Database for International Classification of Disease, Tenth Revision (ICD-10) code S43.43 (superior glenoid labrum lesion) to determine the total number of patients with a shoulder labral injury from 2016 to 2019. Results were assessed for demographic associations of shoulder labral injury with branch, service occupation, rank, gender, race, and age. Queries were limited to first-time occurrences and ambulatory data only. RESULTS: Overall, our study found the incidence of shoulder labral injuries to be largely conserved each year from 2016 to 2019 (3.22-3.35/1000/year). Incidence of labral injury was highest in males, White service members, the junior enlisted, the Army service branch, ages 20 to 29, and enlisted non-combat personnel. CONCLUSIONS: With knowledge of injury patterns in specific military populations, initiatives may be taken to identify at-risk service members with the goal of informing future preventive strategies.

Republication of "Peroneus Brevis Tenodesis: Side-to-Side or Weave?"

Background: Inversion ankle injuries are extremely common, sometimes causing injury to the peroneus brevis tendon. If more than 50% of the tendon is injured, it oftentimes requires tenodesis to the adjacent peroneus longus tendon. Both Pulvertaft (PT) and side-to-side (SS) techniques have been used for joining the 2 tendons. The purpose of this study was to compare the strength and stiffness of these 2 techniques. Methods: Five matched pairs of cadaver ankle specimens were randomized to receive either an SS or PT tenodesis of the peroneus brevis to longus tendons. Following the tenodesis, the specimens were tested for failure load, displacement, energy absorbed at failure, and peak load. Stiffness was also calculated. Paired t tests were performed to detect differences between the 2 conditions. Results: There were no statistically significant differences between the SS and PT tenodesis for any of the metrics measured. For stiffness, the techniques were very similar (SS = 10.14 [4.35], PT = 12.85 [1.72]). Conclusion: There is no difference in failure load, displacement, energy absorbed at failure, peak load or stiffness between the PT and SS techniques for peroneal tenodesis. Level of Evidence: Level V, cadaver study.

Burden and risk factors for Achilles tendinopathy in the military population from 2006 to 2015. A retrospective cohort study.

CONTEXT: Ankle-foot injuries are ubiquitous in the US military, with Achilles tendinopathy (AT) a common condition that affects function and health-related quality of life. OBJECTIVE: To evaluate the burden and associated factors of AT. DESIGN: Descriptive Epidemiology Study. SETTING: The Defense Medical Epidemiological Database was utilized to identify relevant healthcare encounters. PATIENTS OR OTHER PARTICIPANTS: All active duty and reserve military members who served between 2006 to 2015 (officers: n= 2 149 887; enlisted: n= 9 503 995). MAIN OUTCOME MEASURES: Multi-year prevalence of AT care episodes were calculated and compared by year, service branch, and military rank. Unadjusted and adjusted assessment of injury burden were calculated. RESULTS: Officers incurred 37,939 episodes at a prevalence of 17.65 per 1000 servicemembers (male officers: 18.20 per 1000 servicemembers; female officers: 14.80 per 1000 servicemembers). Among enlisted personnel, there were 116,122 episodes of AT that occurred in 12.22 per 1000 servicemembers (male enlisted: 12.07 per 1000 servicemembers; female enlisted: 13.22 per 1000 servicemembers). All officer specialties had significantly higher burden of AT episodes compared to the ground and naval gunfire officers (prevalence ratio [PR]: 1.04-1.43), except for aviation that demonstrated a significantly lower burden (PR: 0.65). Among enlisted occupations, maritime/naval specialties had lower burden of AT compared to infantry (PR: 0.82) and all other specialties, except for aviation, had significantly higher burden (PR: 1.07-1.71). There were multiple associated factors identified, to include sex, age, rank, military occupation, and service branch. CONCLUSION: AT was ubiquitous in the US military, with a progressive increase in prevalence during the study epoch. There were multiple associated factors identified, to include sex, age, rank, military occupation, and service branch. These findings highlight both the need for prophylactic interventions and identification of the populations with the greatest need.

Hallux Valgus Nonunion Correction in an Active Duty Military Member.

Hallux valgus is one of the most common conditions treated by foot and ankle orthopedists; over 140 surgical procedures have been developed for management of the condition. A rare complication of hallux valgus repair is nonunion, and the literature regarding nonunion after hallux valgus repair is correspondingly sparse. We present a 39-year-old active duty male who underwent operative management after developing nonunion and transfer metatarsalgia following a proximal oblique metatarsal osteotomy. The patient underwent nonunion correction and metatarsal lengthening via bone allografting. No complications were observed during the intra- or perioperative periods. At 2.5-years postoperatively, the patient's symptoms had largely resolved. He expressed high satisfaction with his outcome and was able to continue activity duty. Our findings indicate that nonunion repair can have excellent clinical outcomes with high patient satisfaction, even in an active military population.

Macrotraumatic Fractures of the Multisegmented Ankle-Foot Complex in Military Tactical Athletes: A Cohort Study.

BACKGROUND: Ankle-foot injuries are common in military personnel and substantially degrade function and force readiness. The purpose of this retrospective cohort study was to assess the incidence and contributing factors of traumatic ankle-foot fractures in the US military. METHODS: A population-based study of all service members in the US military was performed assessing the factors of sex, occupation, service branch, rank, and year on segmental tibia-fibula, rearfoot, and forefoot fracture incidence between 2006 and 2015. The Defense Medical Epidemiology Database was queried for the number of individuals with fractures of the tibia-fibula, rearfoot, and forefoot using International Classification of Diseases, Ninth Revision, Clinical Modification on the initial medical encounter. Unadjusted relative risk (RR) calculations were performed assessing sex and occupation. A negative binomial regression assessed the adjusted factors of sex, branch, rank, and year. RESULTS: During this study, 95,540 enlisted service members (8.4 per 1,000 person-years) and 13,318 military officers (5.8 per 1,000 person-years) were diagnosed with ankle-foot fractures. In the adjusted analysis, sex was found to only be a significant factor in forefoot fractures (RR, 1.54), with female service members having a significantly higher risk. There were no significant sex-related differences observed in tibia-fibula or rearfoot fractures. US Navy and Air Force personnel had significantly lower risk of tibia-fibula fractures (RR range, 0.76-0.84) compared with the US Army. Forefoot fracture risk was significantly higher in the US Marine Corps (RR, 1.47) compared with the US Army. Officers had consistently lower risk for fractures in each segment (RR range, 0.68-0.77) compared with enlisted personnel. Enlisted engineers, aviation, and artillery/gunnery compared to infantry, and ground/naval gunfire officers had the greatest relative risk compared all other officer fields (RR range, 1.11-3.67). CONCLUSIONS: Sex, occupation, branch, and rank were salient factors for macrotraumatic ankle-foot fractures. These findings can be used to inform and increase precision in medical planning and in the targeted development of preventive interventions.

Current Gender Diversity and Geographic Trends Among Orthopaedic Sports Medicine Surgeons in the United States.

Background: Female representation varies geographically among orthopaedic residency programs, with the southern region of the United States reported as having relatively lower rates of female orthopaedic surgeons. Purpose: To determine the gender and geographic distributions of US-based orthopaedic sports medicine surgeons and analyze geographic patterns between their training locations and present-day practices. Study Design: Cross-sectional study. Methods: American Orthopedic Society of Sports Medicine (AOSSM) fellowship completion data from the 2016-2021 academic years were analyzed with regard to gender and fellowship location. Medical school, residency, and current practice locations were obtained via internet searches for all individuals identified within the databases. Locations were categorized into regions based on the US Census Bureau definitions. Descriptive statistical analysis was performed on the data. Results: A total of 1268 sports orthopaedic surgeons who graduated fellowship from 2016 to 2021 were analyzed: 141 (11%) were female and 1127 (89%) were male. The percentage of female sports medicine surgeons in fellowship remained constant (11%-12%) from 2016 to 2021. On average, the annual percentage of female orthopaedic sports medicine fellows was 7.2% in the South, 10.4% in the West, 14.2% in the Midwest, and 14.7% in the Northeast. Based on the orthopaedic sports medicine fellowship graduates from 2016 to 2021, the mean percentage of current female orthopaedic sports medicine surgeons in practice was 7.4% in the South, 11.7% in the Northeast, 12.8% in the Midwest, and 14.4% in the West. Conclusion: Approximately 11% of our sample was female; however, this percentage varied heavily by region, with the southern region having significantly lower rates of gender diversity.

Gender and Geographic Trends Among Foot and Ankle Surgeons: Where Are We and Where Do We Need to Improve?

INTRODUCTION: Women have historically been underrepresented in orthopaedics. This study analyzes the geographic distribution of female orthopaedic foot and ankle (OFA) surgeons, as well as geographic patterns between their training locations and current practices. METHODS: American Orthopaedic Foot and Ankle Society (AOFAS) data regarding fellowship completion from 1988 to 2021 were analyzed. Internet searches were then performed to identify medical school, residency, and current practice locations of individual surgeons. States were categorized into regions and divisions based on US Census Bureau guidelines. RESULTS: Of the 1088 OFA surgeons analyzed, 166 (15.26%) were women and 922 (84.74%) were men. The South has a higher number of female OFA surgeons; however, this region and the Midwest have the lowest percentages of female representation. The West and Northeast had significantly higher percentages of female representation and higher retention rates for women. There was high variability in the number and percentage of female OFA surgeons in divisions both within and between regions. CONCLUSION: Although the number of female OFA surgeons has increased, their representation remains low. Geographically, the East South Central division of the United States consistently had the least number of OFA surgeons, whereas the South Atlantic division had the highest.Level of Evidence: Not applicable.