Faculty Bibliography

OBJECTIVE:The objective of this study was to determine the outcomes of robotic peritoneal flap vaginoplasty. BACKGROUND:There is a lack of long-term outcomes data for gender-affirming vaginoplasty to inform patient decision-making. METHODS:A retrospective cohort of 500 consecutive patients undergoing robotic peritoneal flap vaginoplasty from 2017-2023 were reviewed. Complications requiring procedural intervention, self-reported vaginal dimensions, and orgasm were recorded at each follow up visit and analyzed as outcomes. RESULTS:487 (97%) of patients were followed to 3 months, and 425 (85%) to 1 year or greater. Twenty patients (4%) had a complication requiring procedural intervention, and 61(12%) had elective revision surgery. Median self-reported vaginal depth and width at 1 year was 14.5 cm (14.5-14.5) and 3.8 cm (3.8-3.8 cm). There were 12 patients (4%) no longer dilating using standard dilators at this pre-scheduled 1-year appointment, and at last follow-up ≥1 year, 8% were no longer dilating. Thirty-six (8%) of patients were considered anorgasmic at last follow up. Difficulty with orgasm prior to surgery was associated with lower rates of achieving orgasm after surgery and less consistent vaginal depth at 1 year, however 80% of these patients were able to orgasm after surgery. CONCLUSIONS:Clinician-observed and patient-reported outcomes for robotic gender-affirming peritoneal flap vaginoplasty were superior to those reported in the literature for penile inversion vaginoplasty. Patients who do not achieve orgasm prior to surgery are less likely to achieve orgasm and maintain vaginal depth afterwards, however the majority of these patients have improved sexual health after surgery.

Infants with complete bilateral cleft lips and a significantly protruded premaxilla present considerable challenges for the surgeon during the primary lip and nasal reconstruction. Current presurgical infant orthopedics (PSIOs) methods to reduce cleft severity-such as lip adhesion surgery, the Latham appliance, and nasoalveolar molding-often increase the burden of care. Presurgical lip, nose alveolar approximation (PLANA) therapy offers an alternative that effectively reduces this burden. This case report describes the use of PLANA therapy in two infants with bilateral cleft lip and palate, one with mild and one with a significantly protruded premaxilla. PLANA utilizes medical adhesive lip taping and a prefabricated series of nasal silicone devices to retract the premaxilla while promoting nasal tip projection and gradual controlled columellar elongation. The combined action of hydrocolloid lip tapes and nasal devices supports early presurgical objectives and minimizes caregiver demands and prepares patients for primary reconstruction surgery. These two-case reports also address the variations in premaxillary retraction among infants with and without protruded premaxilla.

To evaluate the effect of graded glass infiltration on the fatigue behavior and mechanical reliability of translucent 4Y-PSZ zirconia before and after hydrothermal aging, disc-shaped specimens were fabricated by uniaxial pressing and divided into control and glass-graded groups (n = 36/group). Glass infiltration was performed on pre-sintered specimens followed by final sintering, and half of the specimens from each group underwent hydrothermal aging (134°C, 2.2 bar, 20 h). Microstructure and phase composition were assessed by scanning electron microscopy and x-ray diffraction. Mechanical performance was evaluated using step-stress accelerated life testing, with Weibull statistics, reliability analysis, and inverse power-law modeling. Glass-graded specimens demonstrated higher reliability and characteristic strength (≈330 MPa increase) with similar Weibull modulus compared to controls. The inverse power-law parameter α₀ was higher for the glass-graded group, indicating extended fatigue life, whereas comparable α₁ values suggested similar life-stress relationships. Hydrothermal aging did not significantly affect mechanical performance, although phase transformation occurred in the control group. Fractography revealed surface-initiated failures in controls and interface-related crack initiation in glass-graded specimens. Graded glass infiltration improved the fatigue reliability and characteristic strength without compromising hydrothermal stability of 4Y-PSZ. These results suggest that glass-graded 4Y-PSZ may expand the clinical applicability of translucent zirconia for long-span (≥4-unit) prosthetic reconstructions.

LEARNING OBJECTIVES/OBJECTIVE:After studying this article, the participant should be able to (1) gather appropriate history and perform relevant physical exam maneuvers for head and neck complaints, (2) relate presenting complaints to differential diagnoses, (3) describe the appropriate workup for various head and neck complaints and presentations, and (4) perform clinical staging of head and neck tumors according to current guidelines. SUMMARY/CONCLUSIONS:Pediatric head and neck cancers are rare and complex, but plastic surgeons may play a crucial role in the multidisciplinary and multifaceted workup of a suspected malignancy. These cancers present unique diagnostic and therapeutic challenges given the unique anatomy, physiology, and developmental considerations in children compared to their adult counterparts. A comprehensive workup for pediatric head and neck malignancies is essential, starting with taking a thorough history and physical exam, followed by a well-considered and wide differential diagnosis. Appropriate imaging modalities and biopsy techniques are pivotal in obtaining an accurate diagnosis. Tumor and site-specific staging seek to provide essential information for guiding treatment planning. Plastic surgeons, therefore, must be informed and well versed in their evaluation and workup to best optimize patient outcomes.

LEARNING OBJECTIVES/OBJECTIVE:After studying this article, the participant should be able to (1) understand the incidence and trends of pediatric head and neck cancer; (2) identify the common tumors that present in the head and neck region; (3) describe the risk factors and pathogenesis associated with these malignancies, to identify children at risk; and (4) describe and understand the common presentations of these tumors to gain confidence in diagnosing these patients early in practice. SUMMARY/CONCLUSIONS:Pediatric head and neck malignancies are rare; however, their incidence is rising rapidly, with an incidence of 3.29 diagnoses per 100,000 person-years. These malignancies often present with nonspecific symptoms distinct from adults, making early diagnosis more challenging. Recognizing early symptoms in children is essential to improve treatment and long-term outcomes. This review discusses the incidence, pathogenesis, classification, and presentation of the common pediatric head and neck malignancies, including lymphoma, soft tissue sarcoma, thyroid carcinoma, salivary gland malignancies, bone malignancies, nasopharyngeal carcinoma, and melanoma.

BACKGROUND:Use of soft tissue support in postmastectomy, implant-based breast reconstruction (IBBR) has become increasingly common. Although soft tissue support (STS) offers benefits in terms of stability and contour, in some instances, its use has been associated with increased postoperative complications. This study assesses rates of postoperative complications following IBBR with and without soft tissue support in a large, nationwide database. METHODS:Using Epic Cosmos, a nationwide database of over 300 million patients, patients undergoing postmastectomy IBBR with implantation of a breast implant or tissue expander (CPT 19340) between 2015 and 2025 were identified. Patients were stratified by use of STS (CPT 15777). Primary outcomes included complications within 90 days of surgery: surgical site infection (SSI), seroma, hematoma, wound dehiscence, and implant loss. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated for each complication, and P < 0.05 was considered statistically significant. RESULTS:Among 66,862 patients undergoing IBBR, 32,680 (48.9%) received STS and 34,182 (51.1%) did not. Average BMI was higher in patients with STS (26.9 ± 5.80 vs 26.5 ± 5.74 kg/m 2 , P < 0.05). STS was used less frequently among current smokers (3.7% vs 6.0%, P < 0.05). Adjusting for age, BMI, smoking status, and type 2 diabetes status, STS use was associated with increased odds of surgical site infection (adjusted odds ratio [aOR], 3.89; 95% confidence interval [CI], 3.13-4.90; P < 0.05), seroma (aOR, 2.38; 95% CI, 2.07-2.73; P < 0.05), hematoma (aOR, 1.69; 95% CI, 1.46-1.95; P < 0.05), wound dehiscence (aOR, 2.58; 95% CI, 2.31-2.89; P < 0.05), and implant loss (aOR, 3.40; 95% CI, 3.00-3.88; P < 0.05). CONCLUSIONS:In this nationwide cohort, use of soft tissue support in postmastectomy breast reconstruction was associated with a higher risk of select postoperative complications. These findings underscore the importance of patient selection and shared decision making when considering mesh in breast reconstruction, particularly in patients with modifiable comorbidities such as obesity or smoking.

Pancreatic ductal adenocarcinoma (PDAC) with extensive peripancreatic vessel involvement is classified as locally advanced pancreatic cancer (LAPC). For this group of patients, the current standard of care does not include considering a potentially curative oncologic resection. However, recent advances in multiagent chemotherapy and surgical techniques are challenging this paradigm. Moreover, the current determination of anatomic resectability is vague and unreliable. Here we propose a definition of local resectability, based on pre- and intra-operative assessment. This anatomic definition of resectability assumes careful patient selection based on tumor biology and patient condition. The pre-operative evaluation of vascular anatomy and tumor involvement is conducted using 3D-rendering of pancreas-protocol computed tomography. Identifying a disease-free arterial or venous segment above and below the tumor involvement ("suitable target") is the single critical factor that determines anatomic resectability. Intraoperative isolation of these target vessels confirms the feasibility of vascular reconstruction before resection. This approach, which focuses on identifying target vessels rather than circumferential involvement, offers a more straightforward and clinically relevant method for assessing surgical eligibility in LAPC patients at centers of excellence. In summary, reconstructability-based on surgical expertise and guided by tumor biology-now defines the modern paradigm of resectability in LAPC.

OBJECTIVES/OBJECTIVE:To evaluate the reliability and failure modes of 3D-printed crowns fabricated from different resin composites compared to a milled resin composite block, all indicated as definitive restorations. METHODS:Four 3D-printing resins were evaluated: 1) CeramicCrown (CC; SprintRay), 2)VarseoSmile-Crown (VSC, Bego), 3) Crowntec (CRO, Saremco), and 4) Ceramage 3D-Printed (C3D, Shofu), along a milled resin-composite block: Shofu Block HC Super-Hard (SSH, Shofu). Eighteen implant-supported maxillary first-molar crowns were manufactured per group and tested under step-stress accelerated life testing. Weibull statistics were applied, and reliability was calculated for 100,000 cycles at different loads. Fractographic analysis was performed under scanning electron microscopy. RESULTS:All 3D-printed samples failed during fatigue testing, whereas SSH samples survived both the initial protocol and the extended cycling, in which the load profiles were modified to increase the number of cycles (up to 2400,000). Failures were related to material strength (C3D, CC, VSC) or fatigue damage accumulation (CRO). At a mission of 100,000 cycles at 300 N, all 3D printed groups presented high reliability (>99 %). Under higher loads (800-1000 N), CRO and VSC had lower reliability compared to C3D and CC. Characteristic fracture load was highest for C3D and CC, intermediate for CRO, and lowest for VSC. CRO showed the lowest Weibull modulus. Fractographic analysis indicated fracture initiation at the occlusal surface in printed crowns, propagating toward the margins and abutment. SSH crowns exhibited wear marks with no crack formation. SIGNIFICANCE/CONCLUSIONS:While the milled composite demonstrated superior fatigue resistance, 3D-printed definitive crowns exhibited material-dependent fatigue behavior. Among printed groups, CC and C3D presented higher characteristic fracture load and reliability under higher loads compared to CRO and VSC.

INTRODUCTION/BACKGROUND:Press-fit acetabular components achieve long-term fixation through osseointegration, yet the extent of bone ingrowth necessary for durable stability in well-functioning implants remains unclear. Postmortem retrievals provide a unique opportunity to directly assess the bone-cup interface in clinically successful total hip arthroplasties (THAs). This study evaluated osseointegration and biomechanical fixation strength in deceased-donor acetabular components to better define the characteristics of stable long-term fixation. METHODS:Cadaver pelvis specimens containing uncemented THAs from a single institution were evaluated. There were 29 acetabular components that underwent axial pull-out testing using a universal testing machine. A total of seven of these were additionally processed for histologic evaluation, including dehydration, acrylic embedding, thin-sectioning, staining, and digital imaging. Osseointegration was quantified by bone-area fraction occupancy (%BAFO), representing the proportion of bone occupying the porous thread spaces of the cup. RESULTS:All 29 specimens failed through fracture of the ilium rather than at the bone-cup interface, indicating that the mechanical integrity of the osseointegrated construct exceeded that of the surrounding bone under axial tension. Among the seven histologically analyzed components, %BAFO ranged from 4.2 to 27.0% (mean 15.1%), despite all implants being clinically stable at the time of death. There were no significant linear correlations observed between %BAFO and time implanted, fracture load, or body mass index. A significant quadratic relationship between %BAFO and age was identified, peaking near 81 years. CONCLUSIONS:Cementless acetabular components exhibited strong fixation despite modest osseointegration, with failure occurring through host bone on axial testing. Durable biological fixation appears achievable with limited, but mechanically favorable bone ingrowth.