Inter-rater reliability among healthcare professionals in assessing postoperative wound photos for the presence or absence of surgical wound dehiscence: A Pretest - Posttest study.

BACKGROUND: Surgical wound dehiscence (SWD) has various definitions, which complicates accurate and uniform diagnosis. To address this, the World Union Wound Healing Societies (WUWHS) presented a consensus based definition and classification for SWD (2018). AIM: This quasi-experimental pretest-posttest study investigates the inter-rater reliability among healthcare professionals (HCP) and wound care professionals (WCP) when assessing wound photos on the presence or absence of SWD before and after training on the WUWHS-definition. METHODS: Wound expert teams compiled a set of twenty photos (SWD+: nineteen, SWD-: one), and a video training. Subsequently, 262 healthcare professionals received the pretest link to assess wound photos. After completion, participants received the posttest link, including a (video) training on the WUWHS-definition, and reassessment of fourteen photos (SWD+: thirteen, SWD-: one). PRIMARY OUTCOMES: 1) pretest-posttest inter-rater-reliability among participants in assessing photos in congruence with the WUWHS-definition 2) the impact of training on assessment scores. SECONDARY OUTCOME: familiarity with the WUWHS-definition. RESULTS: One hundred thirty-one participants (65 HCPs, 66 WCPs) completed both tests. The posttest inter-rater reliability among participants for correctly identifying SWD was increased from 67.6 % to 76.2 %, reaching statistical significance (p-value: 0.001; 95 % Confidence Interval [1.8-2.2]). Sub-analyses per photo showed improved SWD posttest scores in thirteen photos, while statistical significance was reached in seven photos. Thirty-three percent of participants knew the WUWHS-definition. CONCLUSION: The inter-rater reliability among participants increases after training on the WUWHS-definition. The definition provides diagnostic criteria for accurate SWD diagnosis. Widespread use of the definition may improve uniformity in care for patients with SWD.

High Quality of Care Delivery Improves Patient Satisfaction and Quality of Life Outcomes After Breast Augmentation.

BACKGROUND: Breast augmentation is one of the most common aesthetic procedures worldwide. Most studies focused on evaluating the outcome with validated patient-reported outcome measures (PROMs) and factors that may influence them. However, the influence of care delivery, which can be measured with patient-reported experience measures (PREMs), is scarce in breast augmentation patients. OBJECTIVES: This study aimed to evaluate the associations between PREMs and PROMs in patients who underwent breast augmentation. METHODS: A multicenter cohort study was conducted in breast augmentation patients. Patients completed PREMs, including aspects such as communication between physician and patient, expectation management, welcome, and hygiene and the BREAST-Q PROM Satisfaction with Breasts, Psychosocial-, Physical- and Sexual well-being, preoperatively and six-months postoperatively. Regression analyses were used to investigate the associations between PREMs and PROMs. RESULTS: Overall, 329 patients were included between 2018-2022. Univariate regression analysis showed a positive association between PREMs and PROMs scales. The aspects of the feeling of being heard (B=-38.39 and B=-18.90), the opportunity to ask questions (B=-9.21) and trust in their physician (B=-39.08) had the highest association with the change in the four BREAST-Q scales. The multivariable regression analysis showed that the variance in PROMs related to changes in PREMs (19%) was hardly influenced by patient characteristics (1%). CONCLUSIONS: Patient outcomes are more positive after breast augmentation when patients feel they are being heard, have the opportunity to ask questions and have trust in their physician. Future studies should be targeted at optimizing patient-reported experience to investigate whether this would improve patient-reported outcomes.

Ex Vivo Thrombolysis to Salvage Free Flaps Using Machine Perfusion: A Pilot Study in a Porcine Model.

BACKGROUND: Mechanical evacuation of capillary thrombi in free flaps is difficult, and often requires thrombolytic therapy. Utilizing machine perfusion systems, the possibility rises to salvage free flaps ex vivo by administering high doses of thrombolytic agents. The primary aim of this pilot study in a porcine model is to investigate the feasibility of ex vivo thrombolysis using an extracorporeal perfusion machine. METHODS: A model of stasis-induced thrombosis was used in 12 free rectus abdominis flaps harvested from six Dutch Landrace pigs. Compromised flaps were ex vivo perfused with University of Wisconsin preservation solution and treated according to the following study groups: (1) 1 mg of tissue plasminogen activator (t-PA) as additive, (2) 3 mg of t-PA as an additive, and (3) no thrombolytic additive. Microcirculation was assessed using near-infrared fluorescence angiography. RESULTS: Pedicled abdominal flaps were created and thrombus formation was successfully induced. Eleven abdominal flaps were perfused using the modified heart-lung machine setup. Near-infrared fluorescence angiography showed delayed or no filling was noted in the control group. In comparison, the flaps which were perfused with 1 mg t-PA or 3 mg t-PA as additive showed increased fluorescence intensity curves. CONCLUSION: This pilot study in a porcine model presents a reliable and reproductive stasis-induced thrombosis model in free flaps. By adding t-PA to a custom-made extracorporeal perfusion system, the indocyanine green fluorescence intensity curves increased of all flaps that were perfused with different dosages of t-PA as additives, indicating restoration of capillary pressure and microcirculatory inflow.

Past, present and future in plastic flap surgery: From surgeon to bioengineer driven progress. A personal view.

By tracking the evolution of flaps in plastic surgery most progress in the beginning has to be credited first by medical professionals during the last centuries by introducing new personal ideas or procedural techniques and second by technical innovations based on bioscientific engineering coupled with public needs and changes in social life as part of the human society. From simply primary wound closure in the very early stages to procedures with donor site morbidity without complete function restoring to most probably sophisticated complete onsite reconstruction without almost any surgeon's help by functional 3D-tissue bioprinting in a large scale bioreactor in the future. By following these major developments from the past to present we will try to get a glimpse of what's maybe next in plastic flap surgery over the following decenniums.

Assessment of Patient Satisfaction With Appearance, Psychological Well-being, and Aging Appraisal After Upper Blepharoplasty: A Multicenter Prospective Cohort Study.

BACKGROUND: To determine the success of an upper blepharoplasty, a popular cosmetic procedure, it is essential to measure outcomes from the patient perspective because these often outweigh objective outcomes. OBJECTIVES: This study aimed to assess patient-reported satisfaction with facial appearance, psychological well-being, and aging appraisal after upper blepharoplasty with validated questionnaires. METHODS: This prospective cohort study included upper blepharoplasty patients from 8 outpatient clinics. Patient-reported satisfaction was assessed with the FACE-Q at intake, and 6 and 12 months postoperatively. RESULTS: In total, 2134 patients were included. High satisfaction with outcome and decision to undergo treatment were measured 6 months postoperatively. Large improvements in FACE-Q scores (range, 0-100) between intake and 6 months postoperatively were seen for satisfaction with appearance (mean, effect size: eyes +48, 2.6; upper eyelids +48, 3.1; facial appearance overall +26, 1.4), psychological well-being (+11, 0.56), and aging appraisal (+22, 1.0). Patients reported they appeared a mean [standard deviation] 3.3 [5.2] years younger postblepharoplasty. No clinically relevant changes were seen between 6 and 12 months. Additionally, improvements in appearance were not dependent on their intake scores, whereas improvements in psychological well-being and aging appraisal were smaller in patients with higher intake scores. Satisfaction with treatment outcome was strongly correlated with appearance satisfaction but not with aging appraisal. CONCLUSIONS: Significant improvements in patient satisfaction regarding appearance, psychological well-being, and aging appraisal can be seen 6 months after blepharoplasty, and outcomes remain stable up to 12 months postoperatively. These data may be used to inform patients and clinicians and improve the overall quality of care.

Successful 18-h acellular extracorporeal perfusion and replantation of porcine limbs - Histology versus nerve stimulation.

The current standard for composite tissue preservation is static cold storage (SCS) and is limited to 6 h until irreversible muscle damage occurs. Extracorporeal perfusion (ECP) is a promising technique for prolonged preservation, however, functional results have been scarcely researched. This article assessed neuromuscular function and compared results to histological alterations to predict muscle damage after ECP. Forelimbs of twelve Dutch landrace pigs were amputated and preserved by 4 h SCS at 4-6 °C (n = 6) or 18 h mid-thermic ECP with University of Wisconsin solution (n = 6). Limbs were replanted and observed for 12 h. Sham surgery was performed on contralateral forelimbs (n = 12). Histology analysis scored four subgroups representing different alterations (higher score equals more damage). Muscle contraction after median nerve stimulation was comparable between ECP, SCS, and sham limbs (P = 0.193). Histology scores were higher in ECP limbs compared to SCS limbs (4.8 vs. 1.5, P = 0.013). This was mainly based on more oedema in these limbs. In-vivo muscle contraction was well preserved after 18 h ECP compared to short SCS, although histology seemed inferior in this group. Histology, therefore, did not correlate to muscle function at 12 h after replantation. This leads to the question whether histology or neuromuscular function is the best predictor for transplant success.

Reconstruction of full thickness wounds using glyaderm in a single-staged procedure.

INTRODUCTION: In large full-thickness skin defects, donor site morbidity limits the available thickness and surface of skin autografts and therefore only split-thickness skin grafts are possible for reconstruction. Dermal equivalents can be added to these split-thickness grafts to acquire an anatomically better skin reconstruction. Glyaderm is a human derived, acellular dermis and up until now has only been used in a two-staged procedure. This report describes results of a case series using Glyaderm and split-thickness skin grafts in a single-staged procedure. METHODS: Glyaderm was introduced in 2017 in Radboudumc (Nijmegen, The Netherlands). Glyaderm and autologous split-skin grafts were simultaneously applied to the wounds. In cases with large wound surfaces or wounds covering highly mobile areas, negative pressure wound therapy was additionally applied. The first ten cases were followed with regular intervals post-operatively, assessing graft take, scar appearance, post-operative wound problems and re-interventions. RESULTS: Patients were aged 3 weeks to 76 years-old. Treated skin surface varied from 1-16% total body surface. Wounds resulted from trauma (n = 4), burns (n = 4) or soft tissue infections (n = 2). Follow-up varied from 4 months to 1.5 years. No complications occurred after surgery. Average take rate was 98%. Two patients had a later re-intervention to further improve the aesthetic appearance of the scarred area. CONCLUSION: Our first results with the application of Glyaderm in a single-staged procedure provided good healing, graft take and scar appearance. Glyaderm was found a suitable dermal substitute in the treatment of full thickness wounds.

Submental flap for vascularized lymph node transfer; a CTA-based study on lymph node distribution.

BACKGROUND: Amongst various options of vascularized lymph node transfers, the submental flap has the lowest risk for iatrogenic lymphedema. The aim of this study was to gain insight into distribution, number, and size of lymph nodes along the mandible using computed tomography angiography (CTA). METHODS: A total of 52 CTA scans of head/neck region were evaluated retrospectively. Lymph nodes in the submental and submandibular region, related to the origin of the submental artery, were recorded using a three-dimensional coordinate system, and standardized using an iterative closest point algorithm. Results were analyzed for gender, location, size, and number. RESULTS: The mean number and size of lymph nodes were 5.30 ± 2.00 and 5.28 ± 1.29 mm, respectively. The mean distance of the lymph nodes to the origin of the submental artery was 25.53 ± 15.27 mm. There was no significant difference between both sides when comparing size (left: 5.39 ± 1.28; right: 5.17 ± 1.34; P = .19), number (left: 5.46 ± 2.10; right: 5.17 ± 1.96; P = .49), and distance (left: 24.78 ± 12.23; right: 26.32 ± 14.73; P = .19). No significance was found between males and females concerning number (P = .60), size (P = .50), and distance (P = .06). CONCLUSION: The variance of lymph node distribution along the mandible may warrant conducting a CTA scan to maximize the number of transferred lymph nodes and aid in flap design.

Alternative Perforator Options for Insufficient Profunda Artery Perforators: A Case and Anatomical Study.

INTRODUCTION: The profunda artery perforator (PAP) flap can be an alternative to the deep inferior epigastric artery flap. However, in some cases, the PAP may not be adequate to perfuse the whole flap. In this study, we describe 3 cases in which an alternative perforator was used for PAP flap perfusion. In addition, we describe an anatomical study to explore the perforasome of the PAP and alternative perforators. MATERIALS AND METHODS: Three cases are described in which an alternative perforator was used to successfully perfuse the pap flap. For the anatomical study, 7 PAP flaps were raised from cadavers. Ink was injected in the PAP, the gracilis perforator (GP) and the descending branch of the inferior gluteal artery perforator (DBIGA). Then, perfused area of the flap by each perforator was calculated. RESULTS: The 3 patients with alternative perforators recovered without complications, in addition, no signs of fat necrosis were observed. Concerning the anatomical study, mean perfusion area of the PAP pedicle was 204 ± 90 cm (range, 141-364 cm). The GP and the DBIGA had a perfusion area of 182 ± 42 cm (range, 123-235 cm) and 157 ± 22 cm (range, 136-192), respectively. CONCLUSION: Although the PAP flap has considerable benefits over the more traditional inferior gluteal artery perforator and transverse upper gracilis flaps, a plastic surgeon might encounter a PAP flap perforator that is not deemed viable for flap perfusion. In these cases, the GP and DBIGA may be suitable "escape" alternatives to complete the reconstruction.

Surgical reconstruction of pressure ulcers in spinal cord injury individuals: A single- or two-stage approach?

INTRODUCTION: There are two surgical approaches to reconstruct a pressure ulcer (PU): one-stage reconstruction or two-stage reconstruction. One stage reconstruction consists of surgical debridement and flap reconstruction during one operation. Two-stage surgery consist of a surgical debridement and a final reconstruction in two different sessions, with approximately six weeks between both sessions. OBJECTIVE: The aim of this study was to compare the results of single stage surgery and two-stage surgery on the PU recurrence rate and other important post operative complications. METHOD: A retrospective, comparative study in Spinal Cord Injured (SCI) individuals with a single- or two stage surgical reconstruction between 2005 and 2016 was designed. A total of 81 records were included for analysis. RESULTS: The primary outcome, the difference in occurrence of a recurrent PU in the reconstructed area (33.3% versus 31.6%), is not statistically significant between one-and two-stages reconstruction. Also, the mean duration to develop a recurrent PU between both surgical reconstructions is not statistically significant. Other surgical complications in the reconstructed area like wound hematoma, hemorrhage, seroma or (partial) flap failure did not differ significantly between both groups, apart and in total. We calculated the additional costs in case of a two-stage approach compared with a single-stage reconstruction at EUR 16,362. CONCLUSIONS: There are no statistical significant differences in PU recurrence rate or other post operative complications between SCI patients who have undergone one- or two stage PU reconstructive surgery. The most obvious choice for a one-stage approach in case of PU reconstructive surgery has great positive implications for the patient, family, health care providers and the health care system.

Successful Long-term Extracorporeal Perfusion of Free Musculocutaneous Flaps in a Porcine Model.

BACKGROUND: Extracorporeal perfusion is a technique that aims to safely prolong tissue preservation by reducing ischemia-reperfusion injury. Free muscle flaps provide a sensitive research model due to their low ischemic tolerance. However, long-term perfusion of free muscle flaps is scarcely researched. The aim of this study was to compare tissue damage in musculocutaneous flaps during 36 h of extracorporeal perfusion versus static cold storage. MATERIALS AND METHODS: Bilateral free rectus abdominis flaps were harvested from five Dutch Landrace pigs (weight: 53-59 kg). Flaps were treated for 36 h according to the following study groups: (1) cold storage at 4°C-6°C (n = 4), (2) perfusion with histidine-tryptophan-ketoglutarate (HTK) at 8°C-10°C (n = 3), (3) perfusion with University of Wisconsin solution (UW) at 8°C-10°C (n = 3). Perfusion fluid samples (creatinine kinase, blood gas) and biopsies for quantitative polymerase chain reaction were collected at multiple time points. Microcirculation was assessed at 24 h of preservation using indocyanine-green fluorescence angiography. Flap weight was measured at the start and end of the preservation period. RESULTS: Successful and stable perfusion for 36 h was achieved in all perfused flaps. The mean creatinine kinase increase in the perfusion fluid was comparable in both the groups (UW: +43,144 U/L, HTK: +44,404 U/L). Mean lactate was higher in the UW group than in the HTK group (6.57 versus 1.07 mmol/L). There were homogenous and complete perfusion patterns on indocyanine-green angiography in both the perfusion groups, in contrast to incomplete and inhomogeneous patterns during cold storage. Expression of genes related to apoptosis and inflammation was lower in perfused flaps than in the cold storage group. Weight increase was highest in the HTK group (78%; standard deviation [SD], 29%) compared with UW (22%; SD, 22%) and cold storage (0.7%; SD, 4%). CONCLUSIONS: Long-term extracorporeal perfusion of free rectus abdominis flaps is feasible. Outcomes in the perfusion groups seemed superior compared to cold storage. Hypotheses gained from this research need to be further explored in a replantation setting.

The inter-rater and test-retest reliability of skin thickness and skin elasticity measurements by the DermaLab Combo in healthy participants.

BACKGROUND: For several purposes, skin parameters like thickness and elasticity can be measured. However, little is known about the accuracy of those measurements. AIM: The aim of this study was to determine the intrarater and test-retest reliability of skin thickness and elasticity measurements performed with the DermaLab Combo®. METHODS: A total of 49 participants were included in this study. Skin thickness and elasticity were measured at six defined locations on the dominant arm. Measurements were repeated two times by the same observer to determine the test-retest reliability. To determine the inter-rater reliability, a second observer repeated the measurements once. RESULTS: Inter-rater and test-retest reliability for elasticity measurements fluctuates per location and per parameter: Inter-rater intraclass correlation coefficient (ICC) ranged from 0.23 to 0.80, and test-retest ICC ranged from 0.25 to 0.84. Skin thickness was measured reliable by every observer on every location, with a test-retest ICC ranging from 0.71 to 0.83 and an inter-rater ICC ranging from 0.69 to 0.80. CONCLUSION: The DermaLab Combo® showed a good inter-rater reliability when measuring skin thickness and elasticity. Not all locations are suitable for reliable inter-rater or test-retest measurements. The device is difficult to use by inexperienced users, as the echo probe is sensitive to small movements.

The Long-term Patency of Lymphaticovenular Anastomosis in Breast Cancer-Related Lymphedema.

BACKGROUND AND OBJECTIVES: Lymphedema is a condition that can greatly affect patient's quality of life. Promising results have been described with lymphaticovenular anastomosis (LVA) in the treatment of lymphedema. It is currently unknown at what rate anastomoses remain functional after a longer follow-up. The aim of this study was to determine LVA patency at 1-year follow-up. METHODS: Retrospective chart review was performed on patients who underwent LVA surgery. Patients who had indocyanine green lymphography performed at 12 months' follow-up after LVA were included in this study. Volume measurements were performed prior to surgery and at 6 and 12 months' follow-up. Patients quality of life was measured prior to surgery and at 6 months' follow-up. RESULTS: Twelve patients met inclusion criteria. In total, 15 (56.5%) of 23 LVAs were considered patent. In 8 patients (66.7%), at least 1 patent LVA was visible. The volume difference between the healthy and affected arms decreased 32.3% on average. Quality of life increased with 1.4 points on average. CONCLUSIONS: This study is, to our knowledge, the first to evaluate long-term patency of LVA in upper limb lymphedema. Our study demonstrates that at least 56.5% of the anastomoses created are patent after 1-year follow-up.

Current insights into extracorporeal perfusion of free tissue flaps and extremities: a systematic review and data synthesis.

BACKGROUND: Extracorporeal perfusion is a promising new technique for prolonged preservation of free flaps and extremities; however, uncertainties on perfusion settings and efficacy still exist. No overview of literature is currently available. This review systematically appraised available evidence comparing extracorporeal perfusion to static storage. MATERIALS AND METHODS: An electronic systematic search was performed on June 12, 2016, in MEDLINE and EMBASE. Articles were included when evaluating the effect of extracorporeal perfusion of free flaps or extremities compared to that of a control group. Two independent researchers conducted the selection process, critical appraisal, and data extraction. RESULTS: Of 3485 articles screened, 18 articles were included for further analyzation. One article studied discarded human tissue; others were studies conducted on rats, pigs, or dogs. Perfusion periods varied from 1 h to 10 d; eight articles also described replantation. Risk of bias was generally scored high; none of the articles was excluded based on these scores. Tissue vitality showed overall better results in the perfused groups, more pronounced when perfusing over 6 h. The development of edema was a broadly described side effect of perfusion. CONCLUSIONS: Although tissue vitality outcomes seem to favor extracorporeal perfusion, this is difficult to objectify because of large heterogeneity and poor quality of the available evidence. Future research should focus on validating outcome measures, edema prevention, perfusion settings, and maximum perfusion time for safe replantation and be preferably performed on large animals to increase translation to clinical settings.

Three-Dimensional Imaging of the Face: A Comparison Between Three Different Imaging Modalities.

BACKGROUND: Three-dimensional (3D) imaging of the face is being used extensively in medicine for clinical decision making, surgical planning, and research. Nowadays, several companies are offering a broad range of 3D imaging systems, varying in price, method, and mobility. However, most planning and evaluation methods are created and validated solely with one imaging system. Therefore, it is important to analyze possible differences in the 3D surface reconstruction between different systems. OBJECTIVES: The objective of this study was to analyze differences in the 3D surface reconstruction between three systems: 3dMDface system, Vectra XT, and Artec Eva. METHODS: Three-dimensional images of the face were acquired from 15 healthy patients with each imaging system. Reproducibility of each device was calculated and a comparison of the Vectra XT and Artec Eva with the 3dMDface was made. RESULTS: All 3D imaging devices showed high reproducibility, with a mean difference of 0.18 ± 0.15 mm (3dMDface system), 0.15 ± 0.15 mm (Vectra XT), and 0.26 ± 0.24 mm (Artec Eva). No significant difference in reproducibility was found between the Vectra XT and 3dMDface, while a significant difference was found between 3dMDface and Artec Eva, and between Vectra XT and Artec Eva. The mean difference between 3dMDface and Vectra XT was 0.32 ± 0.26 mm. The mean difference between 3dMDface and Artec Eva was 0.44 ± 1.09 mm. CONCLUSIONS: All three imaging devices showed high reproducibility and accuracy. Although the Artec Eva showed a significant lower reproducibility, the difference found was not clinically relevant. Therefore, using these different systems alongside each other in clinical and research settings is possible.

Medial lower leg perforators: An anatomical study of their distribution and characteristics.

PURPOSE: The integument of the medial lower leg is underestimated as a donor site for local and distant reconstructions. Comprehensive knowledge of its perforator anatomy is lacking. This study aims to determine perforator location and characteristics and to compare these regarding the proximal, middle and distal third of the medial lower leg. MATERIALS AND METHODS: The medial lower leg region (MLLR) of 16 cadavers was delineated and investigated after injecting the popliteal artery with acrylic paint. Following dissection, all perforators larger than 0.3 mm were localized and mapped. Their course, source vessel, length and diameter were subsequently documented. RESULTS: Overall, 122 perforators were found, 102 (83.6%) originating from the posterior tibial artery, 16 (13.1%) from the medial sural artery and 4 (3.3%) from the anterior tibial artery. A mean of 7.6 ± 2.4 perforators (range 4-13) per MLLR was found. Most perforators (42.6%) were localized in the distal third of the MLLR, followed by the middle (36.9%) and proximal third (20.5%). The largest and longest perforators were found in the proximal third of the MLLR (diameter 1.4 mm, length 9.1 cm), followed by the middle and distal third respectively. Of all musculocutaneous perforators, the majority (78.6%) was located in the middle third of the MLLR. Of all septocutaneous perforators, most (55.3%) were found in the distal third of the MLLR. A small number of unexpected anatomical variants were found. CONCLUSION: In each third of the MLLR different perforator characteristics were found. Knowledge of these characteristics can be used to direct the reconstructive plan. © 2016 Wiley Periodicals, Inc. Microsurgery 37:319-326, 2017.

Ex-vivo oxygenated perfusion of free flaps during ischemia time: a feasibility study in a porcine model and preliminary results.

BACKGROUND: Under ideal circumstances, creation of the anastomosis during free flap transfer is a routine task and can be performed under short ischemia time. However, vessels may be in suboptimal state due to atherosclerosis, radiotherapy or trauma, increasing difficulties regarding receptor vessel identification, and anastomosis which in turn may lead to lengthening of ischemia time resulting in postoperative wound problems or even flap loss. In the current pilot study, a modified heart-lung machine was assembled to achieve continuous oxygenated extracoporeal perfusion using porcine myocutaneous rectus abdominis flaps, aimed at minimizing tissue damage occurring during ischemia time. MATERIALS AND METHODS: Different pilot test groups with n = 2 were created, including oxygenated perfusion with heparinized autologous blood or organ preservation solutions. Control groups included short flush with preservation solution followed by cold storage. RESULTS: Flaps were successfully attached to the modified heart-lung machine while maintaining stable flow throughout the 24-h experiments. Flaps undergoing continuous oxygenated perfusion with preservation solutions showed minimal or no signs of cell necrosis during the 24-h experiment, in contrast to using heparinized autologous blood or flushing and cold storage. CONCLUSIONS: The use of a modified heart-lung machine for oxygenated perfusion of free flaps provides new possibilities to minimize tissue damage during ischemia time, and further study of its use is warranted.

Psychophysiological Processing of Itch in Patients with Chronic Post-burn Itch: An Exploratory Study.

A substantial proportion of patients with burn injury develop chronic itch, which can severely affect their quality of life. As found in research on chronic pain, different psychophysiological processes may also play a role in chronic itch, of which central sensitization, conditioned modulation, and attentional processes have been studied most frequently. This study aimed to explore psychophysiological processes of chronic post-burn itch by comparing 15 patients with long-term itch due to burn injury with 15 matched healthy controls. Exploratory results indicated tendencies for higher itch sensitivity in patients than in controls, for mechanical stimuli and histamine, but not for electrical stimulation. Results further suggest that the efficacy of itch modulation by an itch- or pain-conditioning stimulus or directing attention towards itch stimuli do not differ between these patients and controls. Further elucidation of the processes underlying post-burn itch may improve the early identification and treatment of burn patients developing chronic itch.

Breast Reconstruction Using the Geometrically Modified Profunda Artery Perforator Flap From the Posteromedial Thigh Region: Combining the Benefits of Its Predecessors.

BACKGROUND: Occasionally, the deep inferior epigastric perforator flap is unavailable for autologous breast reconstruction. Alternative options, such as gluteal artery perforator flaps, the transverse upper gracilis flap, and the profunda artery perforator (PAP) flap, have been well documented. In our initial experience, the PAP flap was associated with limitations at the donor site. Therefore, a geometrically modified PAP flap was evaluated. METHODS: Forty geometrically modified PAP flap reconstructions were performed on 30 patients. Our modification comprised flap harvest from a more cranial area, hereby adding abundant inferior gluteal tissue to the flap while sparing superior thigh tissue. Patient characteristics, anatomical variables, and clinical outcome were prospectively evaluated. RESULTS: Mean patient age was 44 years, and mean body mass index (BMI) was 23.3 kg/m. Mean flap size was 32 × 12 cm, and mean weight was 385 g. Mean number of suitable perforators (diameter ≥ 0.5 mm) in the adductor magnus area was 1.7 per thigh. All flaps survived completely. Wound dehiscence at the donor site occurred after 4 unilateral reconstructions. Transient lymphedema of the leg occurred after 4 other unilateral reconstructions. Other wound morbidity or systemic complications did not occur. Secondary breast surgery for symmetry and volume was indicated after 16 reconstructions. Preoperative bra size was unchanged or larger in 36 reconstructions. Scar position in the crease was achieved after 39 reconstructions. Sensibility changes of the posteromedial thigh region were not observed. CONCLUSIONS: The geometrically modified PAP flap ensures in-the-crease scar positioning and provides sufficient tissue to restore preoperative bra size.

Comparison of three different incision techniques in A1 pulley release on scar tissue formation and postoperative rehabilitation.

INTRODUCTION: The optimal surgical approach for trigger finger release remains controversial in hindsight of postoperative rehabilitation as well as scar tissue formation. In this study, we comparatively evaluated the outcome of three different types of skin incision by employing the "Disability of the Arm Shoulder and Hand Score" (DASH) and by quantitative ultrasound measurements of scar tissue volume. MATERIALS AND METHODS: Thirty patients (32 triggerfingers) were enrolled in this study and randomly assigned to one of three groups: incision placed (1) transversal in distal palmar crease, (2) transversal and 2 mm distal from distal palmar crease, (3) longitudinally over MCP joint without crossing the distal palmar crease. Patients characteristics were noted and DASH scores were retrieved at four time points, (1) preoperatively (baseline), (2) 1 month, (3) 3 months, (4) 12 months postoperatively. Scar volume formation was assessed by ultrasound at 3 months postoperatively in 28 patients. RESULTS: All groups showed a significant reduction in DASH values at 3 and 12 months postoperatively when compared to their own baseline levels. Group 3 showed the fastest and most pronounced reduction in DASH values at 1 month. Scar tissue formation was almost 57 % increased in group 1 vs group 2 and 3, however, not significant. CONCLUSION: There is no clear benefit of one incision technique over another. However, based on scar volume parameters, the significant faster recovery in the first month and the surgical ease of exposure and wound closure inclines us to favor the longitudinal incision (group 3) in future patients.