Meta-Analysis of Validated Quality of Life Outcomes Following Voice Feminization in Transwomen

OBJECTIVES

For transwomen undergoing voice feminization interventions, fundamental frequency (F 0 ; vocal pitch) is a commonly reported functional outcome measure in the literature. However, F 0 may not correlate well with improvement in quality of life (QoL). Several validated voice-related QoL instruments have been used to assess QoL improvement in these patients, yet there is no consensus on the most appropriate instrument. This systematic review and meta-analysis aimed to assess the relationship between change in F 0 and QoL improvement following voice feminization, and to compare validated QoL instruments commonly used in this population.

DATA SOURCES

PubMed, Cochrane, and Embase.

REVIEW METHODS

A systematic review was conducted following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Primary studies of transwomen undergoing voice feminization, reporting validated QoL outcomes were included. Meta-analyses for associations between mean change in QoL score and mean change in F 0 , as well as variations in mean change in QoL score by QoL instrument, were performed using a multilevel mixed effects model.

RESULTS

No statistically significant correlation was found between change in F 0 and QoL score improvement post-intervention. Different validated instruments showed statistically significant variation in QoL score change, with the Trans Women Voice Questionnaire (TWVQ) capturing a greater improvement in QoL score relative to other instruments.

CONCLUSIONS

Lack of correlation between changes in F 0 and QoL improvement further supports that F 0 alone is insufficient to assess the efficacy of voice feminizing interventions. Validated QoL measures are useful adjuncts. Of these, the TWVQ appears to be the most sensitive for measurement of QoL improvement following voice feminization.

"Septoplasty" Performed at Primary Cleft Rhinoplasty: A Systematic Review of Techniques and Call for Accurate Terminology

OBJECTIVE

Primary cleft nasal repair can include septal reconstruction. We hypothesize that primary cleft septoplasty and adult septoplasty have fundamental differences that render these procedures as distinct surgical entities.

DESIGN

Systematic review of the PubMed, Cochrane, and Embase databases performed on pediatric cleft and general adult septoplasty techniques through December 2021. (PROSPERO ID CRD42022295763).

MAIN OUTCOME MEASURES

Collected data included information on septal dissection, septal detachment, and management of the bony and cartilaginous septum.

RESULTS

Twenty-eight pediatric cleft septoplasty and 229 adult septoplasty studies were included. Dissection in primary cleft septoplasty was limited to the anterocaudal septum, while secondary cleft septoplasty and adult septoplasty techniques entailed wide exposures of the cartilaginous septum with or without exposure of the perpendicular plate of the ethmoid. In primary cleft septoplasty, detachment of the septum was mostly limited to the nasal spine and anterior base of the cartilaginous septum, while secondary cleft septoplasty and adult septoplasty included detachment from the vomer, and ethmoid. In the few reports of cartilage excision during primary cleft septoplasty, removal was limited to the anterior inferior border of the septum, while secondary cleft septoplasty and adult septoplasty included excision of the cartilaginous and bony septum.

CONCLUSION

Primary cleft septoplasty is distinct from septoplasty performed on facially mature patients. More specifically, septal dissection and detachment are limited to the anterior caudal area during primary lip repair, with rare removal of cartilage or bone. Given these differences, the authors suggest the term "septal reset" to describe septoplasty performed during primary cleft nasal repair.

Gender-affirming hysterectomy in the United States: A comparative outcomes analysis and potential implications for uterine transplantation

PURPOSE

Hysterectomy is a gynecological procedure sometimes performed as part of the gender-affirming process for transgender and gender-expansive patients assigned female at birth. Our goal was to compare surgical outcomes between patients undergoing gender-affirming hysterectomy and patients undergoing hysterectomy for benign menstrual disorders. We then explored the implications of gender-affirming hysterectomy for uterine transplantation.

METHODS

We performed a retrospective cohort study using data from the American College of Surgeons National Surgical Quality Improvement Program database from 2009 through 2018. We identified patients undergoing hysterectomy in the United States based on Current Procedural Terminology code. We used the International Classification of Diseases 9 or 10 codes to identify patients with benign menstrual disorders (non-gender-affirming group) and gender dysphoria (gender-affirming group). We compared patient characteristics and surgical complications.

RESULTS

Of the 40,742 patients that met inclusion criteria, 526 (1.3%) patients were individuals with gender dysphoria. Compared to patients who underwent hysterectomy for benign menstrual disorders, gender-affirming patients were younger, were healthier, had a lower prevalence of diabetes, and were more likely to undergo surgery in the outpatient setting, with shorter time to discharge. Complication rates were similar between groups. Logistic regression controlling for the American Society of Anesthesiology classification determined the difference of return to the operating room was not statistically significant (OR 1.082; 95% CI, 0.56-2.10; p = 0.816).

CONCLUSION

Gender-affirming hysterectomy has a safety profile similar to hysterectomy performed for benign menstrual disorders. Researchers should further explore the possibility of uterus donation among these patients as they may be suitable candidates.

Implementation of an Ambulatory Cleft Lip Repair Protocol: Surgical Outcomes

OBJECTIVES

Cleft lip repair has traditionally been performed as an inpatient procedure. There has been an interest toward outpatient cleft lip repair to reduce healthcare costs and avoid unnecessary hospital stay. We report surgical outcomes following implementation of an ambulatory cleft lip repair protocol and hypothesize that an ambulatory repair results in comparable safety outcomes to inpatient repair.

DESIGN/SETTING

This is a single-institution, retrospective study.

PATIENTS/PARTICIPANTS

Patients undergoing primary unilateral (UCL) and bilateral (BCL) cleft lip repair from 2012 to 2021 with a minimum 30-day follow-up. A total of 226 patients with UCL and 58 patients with BCL were included.

INTERVENTION

Ambulatory surgery protocol in 2016.

OUTCOME MEASURES

Variables include demographics and surgical data including 30-day readmission, 30-day reoperation, and postoperative complications.

RESULTS

There were no differences in rates of 30-day readmission, reoperation, wound complications, or postoperative complications between the pre- and post-protocol groups. Following ambulatory protocol implementation, 80% of the UCL group and 56% of the BCL group received ambulatory surgery. Average length of stay dropped from 24 h pre-protocol to 8 h post-protocol. The 20% of the UCL group and 44% of the BCL group chosen for overnight stay had a significantly higher proportion of congenital abnormalities and higher American Society of Anesthesiology (ASA) class. Reasons for overnight stay included cardiac/airway monitoring, prematurity, and monitoring of comorbidities. There were no differences in surgical outcomes between the ambulatory and overnight stay groups.

CONCLUSIONS

An ambulatory cleft lip repair protocol can significantly reduce average length of stay without adversely affecting surgical outcomes.

Comparative Outcomes of Malar Implants Versus Fat Transfer to Cheeks Among Transfeminine Individuals Undergoing Malar Augmentation

BACKGROUND

Malar augmentation is a key procedure sought out by transfeminine individuals seeking to feminize their facial appearance. Different surgical techniques have been described in the literature including fat transfer to the cheeks and malar implant placement. Because of the paucity of information in the literature, there is no consensus on best practices for this procedure. The objective of our study is to determine the effectiveness and safety of malar implants as compared with fat transfer to the cheeks in transfeminine individuals.

METHODS

We examined all patients with the diagnosis of gender dysphoria that were referred to the senior author seeking consultation for feminizing facial procedures between June 2017 and August 2022. Patients who underwent fat transfer to the cheeks or malar implant placement were included in our study. We reviewed the electronic medical record of each patient, and we retrieved and analyzed data regarding demographics, medical and surgical history, operative dictations, clinic notes, and postoperative follow-up. Univariate analysis was used to assess for differences in postoperative complications between these 2 groups.

RESULTS

We identified 231 patients underwent feminizing facial gender affirming surgery, with 152 patients receiving malar augmentation through malar implants or fat grafting. One hundred twenty-nine patients (84.9%) underwent malar implant placement and 23 (15.1%) underwent fat grafting to the cheeks. The mean follow-up time was 3.6 ± 2.7 months. Patient satisfaction was greater in the malar implant group (126/129, 97.7%) compared with the fat transfer group (20/23, 87%, P < 0.045). Two patients who received implants (1.8%) experienced postoperative complications. No patient undergoing fat transfer experiences similar adverse outcomes. Nevertheless, the difference was not statistically significant (P = 1.00).

CONCLUSIONS

Our findings support the contention that malar implants are a safe alternative for malar augmentation among transfeminine individuals. While autologous fat transfer to the cheek is an indispensable option in patients requiring minor malar enhancement, malar implants offer a more permanent option with a better aesthetic outcome in patients requiring major malar enhancement. To minimize postoperative complications, surgeons should emphasize patient compliance with postoperative directions.

Graft Survival and Acute Rejection in Cross-Sex Solid Organ Transplants: A Systematic Review and Meta-Analysis to Inform Vascularized Composite Allotransplantation Practice

BACKGROUND

Out of nearly 90 hand and 50 face transplant recipients, only 5 have received a cross-sex vascularized composite allotransplantation (CS-VCA) to date. CS-VCA has the potential to expand the donor pool and has been shown to be anatomically feasible and ethically acceptable in previous cadaveric and survey studies. However, there is a lack of immunologic data. This study aims to evaluate the immunologic feasibility of CS-VCA through analysis of the solid organ transplant (SOT) literature, given the paucity of CS-VCA data. We hypothesize the rates of acute rejection (AR) and graft survival (GS) in CS vs. same-sex (SS)-SOT to be similar.

METHODS

A systematic review and meta-analysis of the PubMed, EMBASE, and Cochrane databases were performed in accordance with PRISMA guidelines. Studies comparing GS or AR episodes in CS- and SS- adult kidney (KT) and liver transplant (LT) populations were included. Odds ratios were calculated for overall GS and AR for all SS and CS transplant combinations (male-to-female (MTF), female-to-male (FTM) and overall).

RESULTS

A total of 693 articles were initially identified and 25 studies were included in the meta-analysis. No significant difference in GS was noted between SS-KT vs. CS-KT (OR 1.04 [1.00, 1.07]; P=0.07), SS-KT vs. MTF-KT (OR 0.97 [0.90, 1.04]; P=0.41) and SS-LT vs. MTF-LT (OR 0.95 [0.91, 1.00]; P=0.05). No significant difference in AR was noted between SS-KT vs. MTF-KT (OR 0.99 [0.96, 1.02]; P=0.57), SS-LT vs. CS-LT (OR 0.78 [0.53, 1.16]; P=0.22) and SS-LT vs. FTM-LT (OR 1.03 [0.95, 1.12]; P=0.47). For the remaining pairings, GS was significantly increased and AR was significantly decreased in the SS transplants.

CONCLUSIONS

Published data suggest immunologic feasibility of CS-KT and CS-LT, with the potential for generalization to the VCA population. In theory, CS-VCA could expand the potential donor pool, leading to decreased wait times for recipients.

Characterizing Cleft Rhinoplasty Across Skeletal Maturity: A Systematic Review of Terminology and Surgical Techniques

OBJECTIVE

The purpose of this study is to assess cleft rhinoplasty terminology across phases of growth.Design/Setting: A systematic review was performed on cleft rhinoplasty publications over 20 years.Interventions: Studies were categorized by age at surgical intervention: infant (<1 year); immature (1 to 14 years); mature (>15 years).Main Outcome Measures: Collected data included terminology used and surgical techniques.

RESULTS

The 288 studies included demonstrated a wide range of terminology. In the infant group, 51/54 studies used the term "primary." In the immature group, 7/18 studies used the term "primary," 3/18 used "secondary." In the mature group, 2/33 studies used the term "primary," 16/33 used "secondary," 2/33 used "definitive," 5/33 used terms such as "mature," "adult," and "late," and 8/33 did not use terminology.Surgical technique assessment demonstrated: cleft rhinoplasty at infancy used nostril rim or no nasal incision, immature rhinoplasty used closed and open rhinoplasty incisions; and mature rhinoplasty used a majority of open rhinoplasty. Infant and immature cleft rhinoplasty incorporated septal harvest or spur removal in <10% of cases, whereas these procedures were common in mature rhinoplasty. No studies in infants or immature patients used osteotomies or septal grafts, common techniques in mature rhinoplasty.

CONCLUSIONS

Current terminology for cleft rhinoplasty is varied and inconsistently applied across stages of facial development. However, cleft rhinoplasty performed at infancy, childhood, and facial maturity are surgically distinct procedures. The authors recommend the terminology "infant," "immature," and "mature" cleft rhinoplasty to accurately describe this procedure within the context of skeletal growth.

The presence of 3D printing in orthopedics: A clinical and material review

The field of additive manufacturing, 3D printing (3DP), has experienced an exponential growth over the past four decades, in part due to increased accessibility. Developments including computer-aided design and manufacturing, incorporation of more versatile materials, and improved printing techniques/equipment have stimulated growth of 3DP technologies within various industries, but most specifically the medical field. Alternatives to metals including ceramics and polymers have been garnering popularity due to their resorbable properties and physiologic similarity to extracellular matrix. 3DP has the capacity to utilize an assortment of materials and printing techniques for a multitude of indications, each with their own associated benefits. Within the field of medicine, advances in medical imaging have facilitated the integration of 3DP. In particular, the field of orthopedics has been one of the earliest medical specialties to implement 3DP. Current indications include education for patients, providers, and trainees, in addition to surgical planning. Moreover, further possibilities within orthopedic surgery continue to be explored, including the development of patient-specific implants. This review aims to highlight the use of current 3DP technology and materials by the orthopedic community, and includes comments on current trends and future direction(s) within the field.

Patient-centred outcomes and dental implant placement in computer-aided free flap mandibular reconstruction: a systematic review and meta-analysis

Computerised surgical planning (CSP) and computer-aided design and manufacturing (CAD/CAM) have been demonstrated to increase surgical accuracy and reduce operative time in free flap mandibular reconstruction, but evidence is lacking as to their impact on patient-centred outcomes. Implant-supported dental prostheses, however, have been associated with improved quality of life outcomes following free flap mandibular reconstruction. We aim to review reported patient-centred outcomes in mandibular reconstruction with CSP and CAD/CAM and determine whether use of these technologies is associated with higher rates of dental implant placement following free flap mandibular reconstruction. On December 20, 2020, a systematic review and meta-analysis were conducted according to PRISMA guidelines for studies reporting quality of life, functional outcomes, and rates of dental implant placement in computer-aided free flap mandibular reconstruction. A random-effects meta-analysis was performed to compare dental implant placement rates between surgeries using CSP and those using conventional freehand techniques. A total of 767 articles were screened. Nine articles reporting patient-centred outcomes and 16 articles reporting dental implant outcomes were reviewed. Of those reporting dental implant outcomes, five articles, representing a total of 302 cases, were included in the meta-analysis. Use of CSP was associated with a significant increase in the likelihood of dental implant placement, with an odds ratio of 2.70 (95% CI 1.52 to 4.79, p = 0.0007). Standardised reporting methods and controlled studies are needed to further investigate the impact of CSP and CAD/CAM technologies on functional outcomes and patient-reported quality of life in free flap mandibular reconstruction. Use of CSP and CAD/CAM technologies is associated with higher rates of dental implant placement in patients undergoing free flap mandibular reconstruction when compared to conventional freehand techniques.

Gender Affirmation Surgery on the Rise: Analysis of Trends and Outcomes

Purpose: Gender-affirming surgery (GAS) has become an important component of the treatment of gender dysphoria. Although the frequency of these procedures is on the rise, a complete safety profile has yet to be established. The goal of our study is to analyze the trends and outcomes of these surgical procedures. Methods: All patients with a primary diagnosis of gender dysphoria undergoing GAS were identified from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) database between the years 2009 and 2018. Patient demographics and 30-day postoperative outcomes were recorded. We performed a multivariate logistic regression for postoperative complications, controlling for several confounding variables. Results: We identified 2956 patients, of which 1767 (59.78%) were transgender men and 1189 (40.22%) were transgender women. The number of patients undergoing GAS per year increased from 7 in 2010 to 1069 in 2018, a 152-fold increase. For patients undergoing top surgery, Black race (odds ratio [OR] = 2.255, 95% confidence interval [CI] 1.189-4.277, p = 0.013) and diabetes (OR = 4.156, 95% CI 1.571-10.999, p = 0.004) were independent predictors of 30-day postoperative complications. For patients undergoing bottom surgery, total operative time in minutes (OR = 1.005, 95% CI 1.003-1.007, p = 0.001) was an independent predictor of 30-day postoperative complications. Conclusion: The demand for GAS has increased exponentially since 2014. While postoperative complication rates are acceptable, Black race was shown to be an independent predictor of postoperative morbidity in patients undergoing top surgery, a finding that calls for further investigation of racial disparities among transgender patients.

An in vivo preclinical study assessing biocompatibility of Pd-based bulk metallic glass

BACKGROUND: The bulk metallic glass (BMG), Pd79Ag3.5P6Si9.5Ge2, has a high fracture toughness and has been found to accommodate post-yield stress, unlike most other BMG. Moreover, due to its greater noble gas composition it has a intrinsic corrosion resistance, ideal for dental and orthopedic implants. OBJECTIVE: This present study aimed to evaluate the in vivo application of Pd79Ag3.5P6Si9.5Ge2 in a large translational sheep model to assess its efficacy to be utilized as an endosteal device. METHODS: Twelve implants in the form of cylindrical rods (3 mm in diameter) were produced through rapid quenching. Each sheep (n = 12) received one osteotomy in the mandibular region using rotary instrumentation, which was subsequently filled with Pd79Ag3.5P6Si9.5Ge2. After 6- and 24-weeks the animals were euthanized, and samples collected en bloc to conduct histomorphometric analysis. The level/degrees of osseointegration were assessed through bone-to-implant contact (BIC). RESULTS: Favorable BIC was observed with fibrous connective tissue layers at both 6- and 24-weeks. Bone along with interfacial remodeling was observed in proximity with the metallic glass surface at 6 weeks with higher degrees of bone organization being observed at the later healing time, 24 weeks. CONCLUSIONS: The introduced BMG revealed potential to serve as an alternative biomaterial to commonly used Ti alloys given its unique combination of toughness and strength.

Recognizing Racial Disparities in Postoperative Outcomes of Gender Affirming Surgery

Purpose: Given the increasing frequency with which gender affirming surgery (GAS) is performed, understanding risk factors for poor outcomes is imperative. Recent investigations highlight inferior health outcomes experienced by Black transgender and gender expansive (TGE) individuals. Herein, we evaluate the relationship between race and postoperative outcomes in TGE patients undergoing GAS, utilizing the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP). Methods: We conducted a retrospective review of ACS NSQIP from 2010 to 2018. Patients with a primary diagnosis of gender dysphoria undergoing GAS were identified and grouped by race. Patient characteristics and 30-day postoperative outcomes were recorded. Univariate analysis was used to compare patient characteristics and postoperative outcomes across groups. Multivariate logistic regression was used to determine independent predictors of complications. Results: We included 2308 patients (1780 White, 419 Black, 109 Asian). Gender, body mass index, smoking status, and type of surgery performed differed significantly between groups (p < 0.001). Univariate analysis revealed significant differences in 30-day readmission and organ space surgical site infection (SSI) across groups (p = 0.03). Multivariate logistic regression, adjusted for confounders, revealed that Black patients had higher odds of reoperation (odds ratio [OR] 1.82, p = 0.047), 30-day readmission (OR 2.46, p = 0.003), and organ space SSI (OR 4.65, p = 0.024) than White patients. Conclusion: We found that race was an independent predictor of important short-term postoperative outcomes in GAS. Inclusive clinical research, effective engagement with the TGE community, and surgery-specific enhanced recovery after surgery protocols may help address disparities, but we must acknowledge race as a social determinant of health.

Trends, Gaps, and Collaboration in Facial Transplantation: A Bibliometric Study

Facial transplantation (FT) has advanced extensively over the past two decades, with over 40 transplants performed to date. Over this time, the FT literature has evolved as well, from early discussions on ethics and feasibility of FT to functional outcomes reports more recently. We aimed to evaluate the entire body of FT literature to identify trends in publications over time in addition to current existing gaps in the field.

Methods

We conducted a comprehensive bibliometric analysis of the published FT literature from 1994, the first year FT was mentioned in the literature, through July 2020. Co-authorship and keyword information were analyzed using VOSviewer. Articles were manually categorized based on keywords and their aim to provide insight on trends.

Results

A total of 2182 articles were identified. Analysis identified the top 50 publishing authors in the field and demonstrated co-authorship linkage between 84.8% of the top 1000 authors. Clinical surgical techniques, protocols, and experiments were the most frequently published category. Within clinical outcomes, immunologic outcomes were most frequent, while psychosocial were the lowest. Gaps were identified in long-term outcomes reporting and patient-reported outcomes, with physician-reported outcomes heavily outweighing patient-reported outcomes.

Conclusions

As the field continues to evolve, rigorous tracking of publication patterns over time will encourage development of a more robust evidence base, identify gaps in the published literature, and highlight opportunities to enhance collaboration in the field. This data will provide surgeons and research institutions with information to further improve this life-changing procedure.

Double-Barrel Versus Single-Barrel Fibula Flaps for Mandibular Reconstruction: Safety and Outcomes

OBJECTIVES/HYPOTHESIS

Fibula flaps are routinely used for osseous reconstruction of head and neck defects. However, single-barrel fibula flaps may result in a height discrepancy between native mandible and grafted bone, limiting outcomes from both an aesthetic and dental standpoint. The double-barrel fibula flap aims to resolve this. We present our institution's outcomes comparing both flap designs.

STUDY DESIGN

Retrospective cohort study.

METHODS

We conducted a retrospective review of all patients undergoing free fibula flap mandibular reconstruction at our institution between October 2008 and October 2020. Patients were grouped based on whether they underwent single-barrel or double-barrel reconstruction. Postoperative outcomes data were collected and compared between groups. Differences in categorical and continuous variables were assessed using a Chi-square test or Student's t-test, respectively.

RESULTS

Out of 168 patients, 126 underwent single-barrel and 42 underwent double-barrel reconstruction. There was no significant difference in postoperative morbidity between approaches, including total complications (P = .37), flap-related complications (P = .62), takeback to the operating room (P = .75), flap salvage (P = .66), flap failure (P = .45), and mortality (P = .19). In addition, there was no significant difference in operative time (P = .86) or duration of hospital stay (P = .17). After adjusting for confounders, primary dental implantation was significantly higher in the double-barrel group (odds ratio, 3.02; 95% confidence interval, 1.2-7.6; P = .019).

CONCLUSION

Double-barrel fibula flap mandibular reconstruction can be performed safely without increased postoperative morbidity or duration of hospital stay relative to single-barrel reconstruction. Moreover, the double-barrel approach is associated with higher odds of primary dental implantation and may warrant further consideration as part of an expanded toolkit for achieving early dental rehabilitation.

LEVEL OF EVIDENCE

III Laryngoscope, 2021.

Effects of relative centrifugation force on L-PRF: An in vivo submandibular boney defect regeneration study

Properties and composition of leukocyte- and platelet-rich fibrin (L-PRF) clots may be largely affected by centrifugation protocols (function of relative centrifugal force [RCF]), which may impact biological potential repair in bone regeneration. The present in vivo study sought to assess the effect of the RCF on the composition of L-PRF clots, as well as to compare the repair potential of L-PRF clots obtained with different RCF protocols in submandibular boney defects using PLGA scaffolds for bone regeneration. Complete blood count and volumetric evaluations were performed on L-PRF clots obtained through centrifugation for 12 min at 200, 400, and 600 RCF-clot centrifugation speeds. These evaluations were completed from blood collected immediately prior to any surgical procedures. The in vivo portion comprised of three submandibular unilateral, full thickness, osteotomies (~0.40cm³ ) which were created in the submandibular region of six sheep, using rotary instrumentation under continuous irrigation. Subsequently, poly(lactic-co-glycolic acid) (PLGA) scaffolds were enveloped in a L-PRF membrane from one of the three spinning speeds (n = 6/RCF) and inserted into the defect (sites were interpolated to avoid site bias). Six-weeks after surgery, the mandibles were harvested en bloc and prepared for volumetric and histomorphometric evaluations. Membranes harvested from 600 RCF produced significantly larger L-PRF clots (6.97g ± 0.95) in comparison to the lower 200 RCF (5.7g ± 0.95), with no significant differences between 600 and 400, and from 400 and 200 RCF. The three tested RCFs did not alter the platelet count of the L-PRF clot. For the in vivo component, quantitative bone regeneration analyses demonstrated significantly higher values obtained with L-PRF membranes extracted post 600 RCF (27.01 ± 8%) versus 200 RCF (17.54 ± 8%), with no significant differences regarding 400 RCF (~23 ± 8%). At the qualitative histological analyses, L-PRF membranes obtained at 600 and 400 RCFs yielded improved healing throughout the defect, where the L-PRF sourced from the lowest speed, 200 RCF, presented healing primarily at the margins along with the presence of connective tissue at the central aspect of the surgical defect. Higher 600 RCF yielded larger L-PRF clots/membranes, resulting in enhanced bone repair potential in association with PLGA scaffolds for the treatment of critical size bone defects.