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Chen L, Mercan E, Massenburg BB, Hopper RA, Susarla SM, Lee A, Ellenbogen RG, Birgfeld CB. Comparison of Morphometric Outcomes following Open Posterior Expansion versus Endoscopic Strip Craniectomy for Sagittal Synostosis. Plast Reconstr Surg 2024; 153:1095-1106. [PMID: 37199432 DOI: 10.1097/prs.0000000000010679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
BACKGROUND Open middle and posterior cranial vault expansion (OPVE) or endoscopic (ES) strip craniectomy are two surgical techniques for normalization of head shape in isolated sagittal synostosis. This study aims to compare 2-year cranial morphometrics after these two approaches. METHODS The authors performed morphometric analysis on preoperative [time (T) 0], immediately postoperative (T1), and 2-year (T2) postoperative computed tomographic scans of patients who underwent OPVE or ES before 4 months of age. Perioperative data and morphometrics were compared between the two groups and age-matched controls. RESULTS Nineteen patients were included in the ES cohort, 19 age-matched patients were included in the OPVE cohort, and 57 were included as controls. Median surgery time and blood transfusion volume were less for the ES approach (118 minutes and 0 cc, respectively) compared with OPVE (204 minutes and 250 cc, respectively). Anthropometric measurements after OPVE were closer in normal controls at T1 compared with ES, but the skull shapes were comparable at T2. In the midsagittal plane, anterior vault was higher after OPVE at T2 compared with both ES and controls, but the posterior length was shorter and closer to controls than in the ES cohort. Cranial volumes were like controls for both cohorts at T2. There was no difference in complication rate. CONCLUSIONS Both OPVE and ES techniques result in normalization of cranial shape in patients with isolated sagittal synostosis after 2 years with minimal morphometric differences. Family decision-making between the two approaches should be based on age at presentation, avoidance of blood transfusion, scar pattern, and availability of helmet molding and not on expected outcome. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, III.
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Affiliation(s)
- Leah Chen
- From the University of Washington School of Medicine
| | - Ezgi Mercan
- Craniofacial Center, Seattle Children's Hospital
| | | | - Richard A Hopper
- Craniofacial Center, Seattle Children's Hospital
- Division of Plastic Surgery, Department of Surgery
| | - Srinivas M Susarla
- Craniofacial Center, Seattle Children's Hospital
- Division of Plastic Surgery, Department of Surgery
| | - Amy Lee
- Craniofacial Center, Seattle Children's Hospital
- Department of Neurological Surgery, University of Washington
| | - Richard G Ellenbogen
- Craniofacial Center, Seattle Children's Hospital
- Department of Neurological Surgery, University of Washington
| | - Craig B Birgfeld
- Craniofacial Center, Seattle Children's Hospital
- Division of Plastic Surgery, Department of Surgery
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Lutz K, Röhrig A, Al-Hourani J, Kunze S, Forkosh J, Wermelinger J, Messing-Jünger M. Long-term results of minimally invasive strip craniectomy without helmet therapy for scaphocephaly - a single-centre experience. Neurosurg Rev 2024; 47:164. [PMID: 38630329 DOI: 10.1007/s10143-024-02406-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/25/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
Scaphocephaly is the most common type of craniosynostosis and various surgical techniques are used for treatment. Due to late postoperative changes of the head shape, long-term outcome data is important for evaluating any new surgical technique. At our institution, minimally invasive strip craniectomy without regular helmet therapy is the standard treatment in scaphocephalic patients. Between October 2021 and February 2023, we retrospectively examined the skull shape of patients who underwent minimally invasive strip craniectomy for scaphocephaly using a 3D surface scan technique. The cephalic index (CI), the need for helmet therapy and additional cosmetic outcome parameters were investigated. We included 70 patients (72.5% male). The mean follow-up time was 46 (10-125) months and the mean CI was 75.7 (66.7-85.2). In 58 patients, the final cosmetic result was rated as "excellent/good" (mean CI: 76.3; 70.4-85.0), in 11 as "intermediate" (mean CI: 73.3; 66.7-77.6), and in one case as "unsatisfactory" (CI 69.3). The presence of a suboccipital protrusion was associated with a "less than good" outcome. The CI correlated significantly with the overall outcome, the presence of frontal bossing, and the interval between scan and surgery (age at scan). Minimally invasive strip craniectomy is an elegant and safe method to correct scaphocephaly. Our data show good cosmetic results in the long term even without regular postoperative helmet therapy.
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Affiliation(s)
- Katharina Lutz
- Neurosurgery Department, Inselspital, Bern University Hospital and University of Bern, Bern, 3010, Switzerland.
- Pediatric Neurosurgery, Asklepios Children's Hospital, 53757, Sankt Augustin, Germany.
| | - Andreas Röhrig
- Pediatric Neurosurgery, Asklepios Children's Hospital, 53757, Sankt Augustin, Germany
| | - Jasmin Al-Hourani
- Pediatric Neurosurgery, Asklepios Children's Hospital, 53757, Sankt Augustin, Germany
| | - Sandra Kunze
- Pediatric Neurosurgery, Asklepios Children's Hospital, 53757, Sankt Augustin, Germany
| | - Jana Forkosh
- Pediatric Neurosurgery, Asklepios Children's Hospital, 53757, Sankt Augustin, Germany
| | - Jonathan Wermelinger
- Neurosurgery Department, Inselspital, Bern University Hospital and University of Bern, Bern, 3010, Switzerland
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Rajkumar S, Ikeda DS, Scanlon M, Shields M, Kestle JR, Plonsker J, Brandel M, Gonda DD, Levy M, Lucas DJ, Choi PM, Ravindra VM. Frequency and predictors of concurrent complications in multi-suture release for syndromic craniosynostosis. Childs Nerv Syst 2024; 40:153-162. [PMID: 37462812 PMCID: PMC10761552 DOI: 10.1007/s00381-023-06076-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/09/2023] [Indexed: 01/03/2024]
Abstract
PURPOSE Understanding the complication profile of craniosynostosis surgery is important, yet little is known about complication co-occurrence in syndromic children after multi-suture craniosynostosis surgery. We examined concurrent perioperative complications and predictive factors in this population. METHODS In this retrospective cohort study, children with syndromic diagnoses and multi-suture involvement who underwent craniosynostosis surgery in 2012-2020 were identified from the National Surgical Quality Improvement Program-Pediatric database. The primary outcome was concurrent complications; factors associated with concurrent complications were identified. Correlations between complications and patient outcomes were assessed. RESULTS Among 5,848 children identified, 161 children (2.75%) had concurrent complications: 129 (2.21%) experienced two complications and 32 (0.55%) experienced ≥ 3. The most frequent complication was bleeding/transfusion (69.53%). The most common concurrent complications were transfusion/superficial infection (27.95%) and transfusion/deep incisional infection (13.04%) or transfusion/sepsis (13.04%). Two cardiac factors (major cardiac risk factors (odds ratio (OR) 3.50 [1.92-6.38]) and previous cardiac surgery (OR 4.87 [2.36-10.04])), two pulmonary factors (preoperative ventilator dependence (OR 3.27 [1.16-9.21]) and structural pulmonary/airway abnormalities (OR 2.89 [2.05-4.08])), and preoperative nutritional support (OR 4.05 [2.34-7.01]) were independently associated with concurrent complications. Children who received blood transfusion had higher odds of deep surgical site infection (OR 4.62 [1.08-19.73]; p = 0.04). CONCLUSIONS Our results indicate that several cardiac and pulmonary risk factors, along with preoperative nutritional support, were independently associated with concurrent complications but procedural factors were not. This information can help inform presurgical counseling and preoperative risk stratification in this population.
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Affiliation(s)
- Sujay Rajkumar
- Drexel University School of Medicine, Philadelphia, PA, USA
| | - Daniel S Ikeda
- Department of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Michaela Scanlon
- Department of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
- Department of Neurosurgery, Naval Medical Center San Diego, San Diego, CA, USA
| | - Margaret Shields
- Department of Neurosurgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
- Department of Neurosurgery, Naval Medical Center San Diego, San Diego, CA, USA
| | - John R Kestle
- Division of Pediatric Neurosurgery, Primary Children's Hospital, Salt Lake City, UT, USA
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA
| | - Jillian Plonsker
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
| | - Michael Brandel
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
| | - David D Gonda
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
- Division of Pediatric Neurosurgery, Rady Children's Hospital, San Diego, CA, USA
| | - Michael Levy
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
- Division of Pediatric Neurosurgery, Rady Children's Hospital, San Diego, CA, USA
| | - Donald J Lucas
- Division of Pediatric Surgery, Department of General Surgery, Naval Medical Center San Diego, San Diego, CA, USA
| | - Pamela M Choi
- Division of Pediatric Surgery, Department of General Surgery, Naval Medical Center San Diego, San Diego, CA, USA
| | - Vijay M Ravindra
- Department of Neurosurgery, Naval Medical Center San Diego, San Diego, CA, USA.
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, UT, USA.
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA.
- Division of Pediatric Neurosurgery, Rady Children's Hospital, San Diego, CA, USA.
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Coombs DM, Knackstedt R, Patel N. Optimizing Blood Loss and Management in Craniosynostosis Surgery: A Systematic Review of Outcomes Over the Last 40 Years. Cleft Palate Craniofac J 2023; 60:1632-1644. [PMID: 35903885 DOI: 10.1177/10556656221116007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Surgical correction of craniosynostosis can involve significant blood loss. Rates of allogenic blood transfusion have been reported to approach 100%. Multiple interventions have been described to reduce blood loss and transfusion requirements. The aim of this study was to analyze various approaches over the last 4 decades to optimize blood loss and management during craniosynostosis surgery. PRISMA guidelines for systematic reviews were followed. PubMed and Cochrane database searches identified studies analyzing approaches to minimizing blood loss or transfusion rate in craniosynostosis surgery. Primary outcomes included rate or amount of allogenic or autologous blood transfusion, estimated blood loss (EBL), postoperative hemoglobin (Hg), or hematocrit (Hct) levels. Secondary outcomes were examined when reported. Fifty-two studies met inclusion criteria. There was marked heterogeneity regarding design, inclusion criteria, surgical intervention, and endpoints. The majority of the studies were nonrandomized and noncomparative. Four studies analyzed erythropoietin (EPO), 6 analyzed various cell-saver (CS) technologies, 18 analyzed antifibrinolytics (tranexamic acid [TXA], aminocaproic acid [ACA], and aprotinin [APO]), 8 analyzed various alternatives, and 16 analyzed multimodal pathways & protocols. Some studies analyzed multiple approaches. Although the majority of studies reviewed represent level III/IV evidence, several high-quality level I studies were identified and included. Level I evidence supported an improvement in blood outcomes by utilizing EPO, CS, and TXA, individually or in concert with one another. Thus, this review suggests that a multi-prong approach may be the most effective means to optimize blood loss and transfusion outcomes in craniosynostosis surgery.
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Affiliation(s)
| | | | - Niyant Patel
- Division of Pediatric Plastic and Reconstructive Surgery, Akron Children's Hospital, Akron, OH, USA
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5
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Shakir S, Birgfeld CB, Susarla SM. Discussion: Surgical Timing and Neurocognitive Development among Patients with Craniosynostosis: Analysis of Confounders. Plast Reconstr Surg 2023; 151:830-831. [PMID: 36989340 DOI: 10.1097/prs.0000000000010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Affiliation(s)
- Sameer Shakir
- From the Craniofacial Center, Seattle Children's Hospital, Division of Craniofacial and Plastic Surgery
- Department of Surgery, Division of Plastic Surgery, University of Washington
| | - Craig B Birgfeld
- From the Craniofacial Center, Seattle Children's Hospital, Division of Craniofacial and Plastic Surgery
- Department of Surgery, Division of Plastic Surgery, University of Washington
| | - Srinivas M Susarla
- From the Craniofacial Center, Seattle Children's Hospital, Division of Craniofacial and Plastic Surgery
- Department of Surgery, Division of Plastic Surgery, University of Washington
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6
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Linkugel AD, Yu J, Kopar PK, Kodner IJ, Brown D, Patel KB. A Case of Nonsyndromic Craniosynostosis in an Infant Child of Jehovah's Witness Parents: Is Surgical Correction Appropriate? Cleft Palate Craniofac J 2023; 60:280-284. [PMID: 34812088 DOI: 10.1177/10556656211062036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
An infant with nonsyndromic craniosynostosis is brought to clinic by his Jehovah's Witness parents to discuss treatment. Five potential courses of action are discussed in the context of biomedical ethics principles. The potential conflict between parents' autonomy to make decisions for their child and the surgeon's ethical duty of beneficence to the patient is explored.
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Affiliation(s)
- Andrew D Linkugel
- Division of Plastic and Reconstructive Surgery, Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
| | - Jennifer Yu
- Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
| | - Piroska K Kopar
- Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
| | - Ira J Kodner
- Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
| | - Douglas Brown
- Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
| | - Kamlesh B Patel
- Division of Plastic and Reconstructive Surgery, Department of Surgery, 12275Washington University in Saint Louis School of Medicine, Saint Louis, United States
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7
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Perioperative Morbidity of Secondary Frontal Orbital Advancement After Initial Frontal Orbital Advancement. J Craniofac Surg 2023; 34:173-176. [PMID: 36084230 DOI: 10.1097/scs.0000000000009002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/08/2022] [Indexed: 01/11/2023] Open
Abstract
Frontal orbital advancement (FOA) is frequently performed for patients with syndromic and/or multisuture craniosynostosis. A small proportion of patients who undergo FOA have unfavorable growth and subsequently require a second FOA later in life; however, the perioperative risks associated with this second procedure are not well studied. We report results from a retrospective review of FOAs conducted from 2007 to 2022 at a single site with the same craniofacial surgeon. A total of 33 patients were included. Perioperative outcomes were compared between primary and secondary FOA procedures. The two groups were similar in regard to suture involvement and diagnosis, although the secondary FOA group was older at the time of their FOA (1.23 versus 7.07 y, P <0.001). There was no significant difference between groups in operating time, volume of blood transfusion by weight, or in the incidence of postoperative wound complications ( P >0.05). Primary FOA procedures had significantly higher weight-adjusted blood loss (28 versus 18 mL/kg, P =0.014), with a higher proportion of patients receiving a blood transfusion (95% versus 62%, P =0.025). There was no significant difference between groups in the incidence of intraoperative dural injury (50% versus 84%, P =0.067). Our findings suggest that secondary procedures appear to impose less of a surgical risk relative to primary FOA traditionally performed in infancy, likely because of the advanced age at the time of secondary FOA.
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8
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Massenburg BB, Tolley PD, Lee A, Susarla SM. Fronto-Orbital Advancement for Metopic and Unilateral Coronal Craniosynostoses. Oral Maxillofac Surg Clin North Am 2022; 34:367-380. [PMID: 35787824 DOI: 10.1016/j.coms.2022.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Fronto-orbital advancement remains a powerful technique for the correction of anterior cranial vault differences related to metopic (trigonocephaly) or unilateral coronal (anterior plagiocephaly) craniosynostoses. Traditional fronto-orbital advancement requires access to the forehead and superior 2/3 of the orbit via a coronal incision. The frontal bone and orbital segment (bandeau) are then separated from the skull and reshaped. In patients with metopic craniosynostosis, the bandeau and frontal bone will need to be advanced and widened. In patients with unilateral coronal craniosynostosis, the bandeau will need to be "untwisted" to address the supraorbital retrusion on the affected side, the affected orbit will need to be shortened and widened, and the frontal bone flap will need to be proportionately advanced on the affected side. Overcorrection of the affected dimension should be undertaken to account for growth and relapse.
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Affiliation(s)
- Benjamin B Massenburg
- Craniofacial Center, Seattle Children's Hospital and University of Washington School of Medicine, Seattle, WA, USA
| | - Philip D Tolley
- Craniofacial Center, Seattle Children's Hospital and University of Washington School of Medicine, Seattle, WA, USA
| | - Amy Lee
- Craniofacial Center, Seattle Children's Hospital and University of Washington School of Medicine, Seattle, WA, USA
| | - Srinivas M Susarla
- Craniofacial Center, Seattle Children's Hospital and University of Washington School of Medicine, Seattle, WA, USA.
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9
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Gallagher ER, Fulton GK, Susarla SM, Birgfeld CB. Multidisciplinary Care Considerations for Patients with Craniosynostosis. Oral Maxillofac Surg Clin North Am 2022; 34:353-365. [PMID: 35787826 DOI: 10.1016/j.coms.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Infants and children with craniosynostosis require multidisciplinary care, and this is best accomplished when care is provided on a craniofacial team. Most patients with craniosynostosis will have non-syndromic presentations; however, longitudinal care remains critical to ensure appropriate growth and development throughout childhood. In patients with syndromic craniosynostoses, coordinated longitudinal care becomes even more paramount because of the high level of complexity across many different specialties or disciplines. Care delivery that includes perspective and expertise from multiple disciplines is important to help patients reach their full potential and optimal outcomes.
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Affiliation(s)
- Emily R Gallagher
- Department of Pediatrics, Division of Craniofacial Medicine, University of Washington and Seattle Children's Hospital, 4800 Sand Point Way Northeast, M/S OB.9.520, PO Box 5371, Seattle, WA 98145-5005, USA; Craniofacial Center, Seattle Children's Hospital, University of Washington, Seattle, WA, USA; Louisiana State University School of Medicine, New Orleans, LA, USA.
| | - G Kyle Fulton
- Louisiana State University School of Medicine, New Orleans, LA, USA
| | - Srinivas M Susarla
- Craniofacial Center, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Craig B Birgfeld
- Craniofacial Center, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
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10
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Management of Sagittal and Lambdoid Craniosynostosis: Open Cranial Vault Expansion and Remodeling. Oral Maxillofac Surg Clin North Am 2022; 34:395-419. [PMID: 35752548 DOI: 10.1016/j.coms.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The prevalence of sagittal and lambdoid suture craniosynostosis differs considerably, as they are notably the most and least prevalent sutures involved in isolated suture craniosynostosis, respectively. The goals of reconstructing the cranial vault in both entities is the same: to release the fused suture, expand cranial volume, restore normal head shape and morphology, and allow for normal growth of the cranial vault. With regards to sagittal suture synostosis, opinions vary on whether reconstruction should focus on either the anterior or poster cranial vault. In contrast, the poster cranial vault is always targeted in lambdoid suture craniosynostosis.
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11
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Morphologic Differences in Sagittal Synostosis with Age before Surgery. Plast Reconstr Surg 2022; 149:1165e-1175e. [PMID: 35413045 DOI: 10.1097/prs.0000000000009143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND It is important to determine whether sagittal synostosis-associated scaphocephaly is static in the presurgical period, or whether there are morphologic differences with time to include in surgical decision-making. The authors' purpose was to perform cross-sectional analysis of cranial morphology before any surgical intervention in children with sagittal synostosis younger than 9 months compared to matched controls. METHODS The authors performed morphometric analysis on computed tomographic scans from 111 untreated isolated sagittal synostosis patients younger than 9 months and 37 age-matched normal controls. The authors divided the patients into three age groups and performed statistical comparison between sagittal synostosis and controls for each group. RESULTS Sagittal synostosis cephalic indices were stable and lower in patients than in controls across groups. Total cranial volume was equivalent, but sagittal synostosis patients had a greater posterior volume than controls at all ages and a smaller middle fossa volume at older ages. Pterional width was greater in sagittal synostosis patients than in controls for each age group. Frontal bossing vectors were most severe in the youngest age groups and least in the older group. Occipital protuberance was consistent across the age groups. CONCLUSIONS Upper parietal narrowing and occipital protuberance were the consistent deformities across age groups, with the most parietal constriction seen in older patients. Frontal bossing was not consistent and was more severe in the younger patients. The authors did not detect significant pterional constriction, and the appearance of constriction is relative to adjacent morphology and not absolute. CLINICAL QUESTION/LEVEL OF EVIDENCE Risk, II.
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12
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Villegas MA, Okenfuss E, Savarirayan R, White K, Hoover-Fong J, Bober MB, Duker A, Legare JM. Multidisciplinary Care of Neurosurgical Patients with Genetic Syndromes. Neurosurg Clin N Am 2021; 33:7-15. [PMID: 34801144 DOI: 10.1016/j.nec.2021.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Neurosurgical patients with genetic syndromes often receive care from multidisciplinary teams. Successful models range from multiple providers in one clinic space seeing a patient together to specialists located at different institutions working together. Collaboration and bidirectional communication are key. Multidisciplinary care improves outcomes and patient satisfaction. Choosing the goal of the clinic, using ancillary staff, and obtaining institutional buy-in are important initial first steps to establishing a multidisciplinary team clinic. Multidisciplinary teams can leverage technology to expand care via telehealth in multidisciplinary clinics and more vitally communication between providers on the team.
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Affiliation(s)
- Melissa A Villegas
- University of Wisconsin School of Medicine and Public Health, 1500 Highland Avenue, Madison, WI 53705, USA
| | - Ericka Okenfuss
- Department of Genetics, Kaiser Permanente of Northern California, 1650 Response Road Kaiser, Sacramento, CA 95815, USA
| | - Ravi Savarirayan
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute and University of Melbourne, Parkville, Victoria 3052, Australia
| | - Klane White
- Seattle Children's, 4800 Sand Point Way, OA.9.120, Seattle, WA 98105, USA
| | - Julie Hoover-Fong
- Greenberg Center for Skeletal Dysplasias, McKusick Nathans Department of Genetic Medicine, Johns Hopkins University, 600 N. Wolfe Street, Blalock 1008, Baltimore, MD 21287, USA
| | - Michael B Bober
- A.I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, DE 19803, USA
| | - Angela Duker
- A.I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, DE 19803, USA
| | - Janet M Legare
- University of Wisconsin School of Medicine and Public Health, 1500 Highland Avenue, Madison, WI 53705, USA.
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13
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Novel Method of Lateral Vault Modification in Scaphocephaly. J Craniofac Surg 2021; 32:2859-2863. [PMID: 34727486 DOI: 10.1097/scs.0000000000007874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Scaphocephaly is the commonest from of craniosynostosis. There are several surgical methods to correct this and is influenced by the areas affected. A common thread in any of these corrections is an attempt to increase the biparietal diameter by modifying the lateral vault panel (LVP). A simple and novel method is proposed. MATERIALS AND METHOD The records of all patients undergoing scaphocephaly correction in the craniofacial unit at the institution were reviewed from 2003 to 2019. There were 106 patients, 57 males, and 49 females. The age ranged from 6 months to 5 years with a mean of 11 months. The method of vault remodeling was LVP only in 36 (34%), subtotal vault remodeling in 59 (56%), and total vault remodeling in 11 (10%). All 106 patients underwent LVP remodeling as part of the procedure. One or 2 wedge excisions was performed to increase the curvature of the LVP and this panel was fixed on the outside of the temporal squame bone. RESULTS The patients were followed up for a minimum of 1 year. Satisfactory results were obtained. The mean preoperative cephalic index was 64% and the mean postoperative index was 75%. There were minor complications such as screw visibility in a few patients. CONCLUSIONS Wedge excisions of the LVP is a simple and effective maneuver that can be used as strategy when performing scaphocephaly correction.
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Ros B, Iglesias S, Selfa A, Ruiz F, Arráez MÁ. Conventional posterior cranial vault expansion: indications and results-review of the literature. Childs Nerv Syst 2021; 37:3149-3175. [PMID: 34604916 DOI: 10.1007/s00381-021-05318-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/30/2021] [Indexed: 11/26/2022]
Abstract
In the late 1980s, craniofacial surgery units reported suboptimal cosmetic results, cranial volume restriction, and intracranial hypertension after anterior cranial vault remodeling in bilateral coronal synostosis associated with severe brachyturricephaly. A possible explanation was a severe associated growth restriction of the posterior calvaria with radiological synostosis at the lambda sutures. "Conventional" or "fixed" posterior cranial vault expansion techniques were developed to address these limitations, sometimes as the first surgical step in a two-staged protocol of total calvarial reconstruction, combined with suboccipital decompression in cases of symptomatic cerebellar tonsillar herniation or, more easily, to resolve the characteristic occipital flattening of lambdoid synostosis. Various surgical approaches have been described; however, the indications for and timing of surgical treatment and postoperative evaluation of results still remain controversial. Although more invasive, conventional posterior cranial vault expansion has proven to be safe and offers a remodeled and protective bony vault immediately after surgery, but the underlying cranial base malformation remained untreated, with implications in the postoperative growth of the facial skeleton. Overcorrection, rigid stabilization, and grafting are also concerns to be addressed.
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Affiliation(s)
- Bienvenido Ros
- Pediatric Neurosurgery Section, Department of Neurosurgery, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain.
- Craniofacial Surgery Unit, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain.
| | - Sara Iglesias
- Pediatric Neurosurgery Section, Department of Neurosurgery, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
- Craniofacial Surgery Unit, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
| | - Antonio Selfa
- Pediatric Neurosurgery Section, Department of Neurosurgery, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
| | - Francisco Ruiz
- Department of Maxillofacial Surgery, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
- Craniofacial Surgery Unit, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
| | - Miguel Ángel Arráez
- Pediatric Neurosurgery Section, Department of Neurosurgery, Regional University Hospital, Av. De Carlos Haya, 84, 29010, Malaga, Spain
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15
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Luu BC, Davis MJ, Raj S, Abu-Ghname A, Buchanan EP. Cost-effectiveness of surgical comanagement: A systematic review. Surgeon 2021; 19:119-127. [DOI: 10.1016/j.surge.2020.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/01/2020] [Indexed: 12/19/2022]
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16
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The Value of an Orthoplastic Approach to Management of Lower Extremity Trauma: Systematic Review and Meta-analysis. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2021; 9:e3494. [PMID: 33968555 PMCID: PMC8099387 DOI: 10.1097/gox.0000000000003494] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/26/2021] [Indexed: 12/29/2022]
Abstract
Background: Management of traumatic lower extremity injuries requires a skill set of orthopedic surgery and plastic surgery to optimize the return of form and function. A systematic review and meta-analysis was performed comparing demographics, injuries, and surgical outcomes of patients sustaining lower extremity traumatic injuries receiving either orthoplastic management or nonorthoplastic management. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analysis, Cochrane, and GRADE certainty evidence guidelines were implemented for the structure and synthesis of the review. PubMed, Embase, Cochrane Library, Web of Science, Scopus, and CINAHL databases were systematically and independently searched. Nine studies published from 2013 through 2019 compared 1663 orthoplastic managed patients to 692 nonorthoplastic managed patients with traumatic lower extremity injuries. Results: Orthoplastic management, compared to nonorthoplastic management likely decreases time to bone fixation [standard mean differences: −0.35, 95% confidence interval (CI): −0.46 to −0.25, P < 0.0001; participants = 1777; studies = 3; I2 = 0%; moderate certainty evidence], use of negative pressure wound therapy [risk ratios (RR): 0.03, 95% CI: 0.00–0.24, P = 0.0007; participants = 189; studies = 2; I2 = 0%; moderate certainty evidence] with reliance on healing by secondary intention (RR: 0.02, 95% CI: 0.00–0.10, P < 0.0001; participants = 189; studies = 2; I2 = 0%; moderate certainty evidence), and risk of wound/osteomyelitis infections (RR: 0.37, 95% CI: 0.23–0.61, P < 0.0001; participants = 224; studies = 3; I2 = 0%; moderate certainty evidence). Orthoplastic management likely results in more free flaps compared to nonorthoplastic management (RR: 3.46, 95% CI: 1.28–9.33, P = 0.01; participants = 592; studies = 5; I2 = 75%; moderate certainty evidence). Conclusion: Orthoplastic management of traumatic lower extremity injuries provides a synergistic model to optimize and expedite definitive skeletal fixation and free flap-based soft-tissue coverage for return of extremity form and function.
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Smith LGF, Shah V, Duenas H, Onwuka A, Graver AE, Governale LS, Pearson GD, Drapeau AI. Comparison of Perioperative Outcomes and Parental Satisfaction Outcomes of Strip Craniectomy with Postoperative Helmet versus Spring-Mediated Remodeling in Sagittal Craniosynostosis. Pediatr Neurosurg 2021; 56:511-518. [PMID: 34455408 DOI: 10.1159/000517118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 05/07/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION We sought to compare outcomes and parental satisfaction between 2 approaches for sagittal craniosynostosis: strip craniectomy with spring-mediated skull remodeling (SMSR) and strip craniectomy with postoperative helmet (SCH). METHODS Perioperative and outcome data for SMSR or SCH patients between September 2010 and July 2019 were retrospectively reviewed. A telephone survey was administered to parents of children who underwent both procedures. RESULTS A total of 62 children were treated for sagittal craniosynostosis by either SMSR (n = 45) or SCH (n = 17). The SCH group had a lower estimated blood loss (27 vs. 47.06 mL, p = 0.021) and age at surgery (13.0 vs. 19.8 weeks) than the SMSR group. Three patients underwent early springs removal due to trauma or dislodgement, all of whom converted to helmeting. Of the 62 children initially identified, 59 were determined to have an adequate follow-up time to assess long-term outcomes. The mean follow-up time was 30.1 months (n = 16) in the SCH group and 32.0 months in the SMSR group (n = 43, p = 0.39). Two patients in the SCH group and one in the SMSR group converted to open cranial vault reconstruction. Thirty parents agreed to respond to the satisfaction survey (8 SCH, 22 SMSR) based on a Likert scale of responses (0 being most dissatisfied possible, 4 most satisfied possible). Average satisfaction was 3.86/4.0 in the SCH group and 3.45/4.0 in the SMSR group. No parents in the SCH group would change to SMSR, while 3 of the 22 SMSR survey responders would have changed to SCH. CONCLUSIONS Perioperative outcomes and average parental satisfaction were similar in both groups. Importance of helmet wear compliance and risk of spring dislodgement should be discussed with parents.
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Affiliation(s)
- Luke G F Smith
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Varun Shah
- College of Medicine, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Helen Duenas
- College of Medicine, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Amanda Onwuka
- Center for Surgical Outcomes Research, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Anne E Graver
- Division of Pediatric Neurological Surgery, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Lance S Governale
- Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Gregory D Pearson
- Division of Plastic and Reconstructive Surgery, Department of Pediatric Surgery, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Annie I Drapeau
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio, USA.,Division of Pediatric Neurological Surgery, Nationwide Children's Hospital, Columbus, Ohio, USA
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Birgfeld CB, Heike C. Distinguishing Between Lambdoid Craniosynostosis and Deformational Plagiocephaly: A Review of This Paradigm Shift in Clinical Decision-Making and Lesson for the Future. Craniomaxillofac Trauma Reconstr 2020; 13:248-252. [PMID: 33456695 DOI: 10.1177/1943387520965801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The cause of occipital asymmtery can be either extrinsic or intrinsic. Intrinsic causes include lambdoid craniosynsotosis. This condition is generally treated with cranial vault expansion surgery. Extrinsic causes include deformational plagiocephaly, which became commonplace after the "Back to Sleep Campaign" instituted in the 1980s by the American Academy of Pediatrics. The treatment of this condition is non surgical. Dr. Joseph Gruss was instumental in differentiating between these conditions and reducing the number of unnecessary surgeries that were previously being performed.
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Affiliation(s)
- Craig B Birgfeld
- Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Carrie Heike
- Seattle Children's Hospital, University of Washington, Seattle, WA, USA
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19
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A Comparison of Subgaleal Versus Subperiosteal Dissection in Open Cranial Vault Expansion for Sagittal Craniosynostosis. World Neurosurg 2020; 143:108-113. [PMID: 32711139 DOI: 10.1016/j.wneu.2020.07.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The aim of this study was to evaluate surgical outcomes for patients with sagittal craniosynostosis undergoing open cranial vault remodeling with a modified pi procedure comparing subgaleal versus subperiosteal dissection. METHODS A retrospective chart review was performed for children between the ages of 3 and 7 months with sagittal craniosynostosis undergoing open cranial vault expansion at Seattle Children's Hospital. Patient demographics, operative variables, and postoperative outcomes including the surface area of bony cranial defects at 2-year follow-up were evaluated. RESULTS Over a 3-year period, 35 patients between the ages of 3 and 7 months underwent surgical correction of sagittal craniosynostosis using our institutional adaptation of the modified pi technique. Twenty-five patients underwent exposure via a subgaleal (SG) approach, 10 patients had a subpericranial (SP) exposure. Compared with the SP group, the SG group had significant lower estimated blood loss and a shorter operating time (P < 0.05). There were no significant differences with regard to hospital length of stay or postoperative complications (P ≥ 0.48). At 2 years postoperatively, there were no significant differences in the size of the largest cranial defects (SG: 1.1 ± 0.1 cm2 versus 3.7 ± 0.1 cm2, P = 0.40); no patients required a secondary cranioplasty. CONCLUSIONS Open posterior and middle cranial vault expansion is a safe and efficient method of open cranial vault expansion in sagittal craniosynostosis regardless of the plane of dissection. Elevation of the scalp flaps in the SG plane is a minor technical modification that can reduce blood loss and operative times.
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20
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Pressler MP, Geisler EL, Hallac RR, Seaward JR, Kane AA. The Use of Eye Tracking to Discern the Threshold at Which Metopic Orbitofrontal Deformity Attracts Attention. Cleft Palate Craniofac J 2020; 57:1392-1401. [PMID: 32489115 DOI: 10.1177/1055665620926014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES Surgical treatment for trigonocephaly aims to eliminate a stigmatizing deformity, yet the severity that captures unwanted attention is unknown. Surgeons intervene at different points of severity, eliciting controversy. This study used eye tracking to investigate when deformity is perceived. MATERIAL AND METHODS Three-dimensional photogrammetric images of a normal child and a child with trigonocephaly were mathematically deformed, in 10% increments, to create a spectrum of 11 images. These images were shown to participants using an eye tracker. Participants' gaze patterns were analyzed, and participants were asked if each image looked "normal" or "abnormal." RESULTS Sixty-six graduate students were recruited. Average dwell time toward pathologic areas of interest (AOIs) increased proportionally, from 0.77 ± 0.33 seconds at 0% deformity to 1.08 ± 0.75 seconds at 100% deformity (P < .0001). A majority of participants did not agree an image looked "abnormal" until 90% deformity from any angle. CONCLUSION Eye tracking can be used as a proxy for attention threshold toward orbitofrontal deformity. The amount of attention toward orbitofrontal AOIs increased proportionally with severity. Participants did not generally agree there was "abnormality" until deformity was severe. This study supports the assertion that surgical intervention may be best reserved for more severe deformity.
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Affiliation(s)
- Mark P Pressler
- Department of Plastic Surgery, 12334UT Southwestern, Dallas, TX, USA.,Analytical Imaging and Modeling Center, Children's Medical Center, Dallas, TX, USA
| | - Emily L Geisler
- Department of Plastic Surgery, 12334UT Southwestern, Dallas, TX, USA.,Analytical Imaging and Modeling Center, Children's Medical Center, Dallas, TX, USA
| | - Rami R Hallac
- Department of Plastic Surgery, 12334UT Southwestern, Dallas, TX, USA.,Analytical Imaging and Modeling Center, Children's Medical Center, Dallas, TX, USA
| | - James R Seaward
- Department of Plastic Surgery, 12334UT Southwestern, Dallas, TX, USA.,Analytical Imaging and Modeling Center, Children's Medical Center, Dallas, TX, USA
| | - Alex A Kane
- Department of Plastic Surgery, 12334UT Southwestern, Dallas, TX, USA.,Analytical Imaging and Modeling Center, Children's Medical Center, Dallas, TX, USA
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21
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Cho DY, Evans KN, Weed MC, Lee A, Susarla SM. Bilateral Squamosal Suture Craniosynostosis Presenting with Abducens Nerve Palsy and Severe Papilledema. World Neurosurg 2020; 138:344-348. [PMID: 32217173 DOI: 10.1016/j.wneu.2020.03.079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Patients with single-suture or minor suture craniosynostosis are typically asymptomatic at early presentation; intervention is aimed at reducing the risk of elevated intracranial pressure and associated developmental sequelae. Patients may be symptomatic in cases of major multisuture syndromic synostoses or delayed diagnosis. Clinical presentation in this context may include headaches, papilledema, cognitive delay, or behavioral issues. Cranial nerve palsies are atypical symptoms of intracranial hypertension in this patient population. CASE DESCRIPTION An 11-month-old, otherwise healthy girl presented with bilateral severe papilledema and left abducens nerve palsy owing to nonsyndromic near-complete bilateral squamosal suture synostosis with associated incomplete sagittal and right lambdoid synostoses. The patient underwent urgent open cranial expansion, with resolution of her papilledema and improvement in eye position and motility. CONCLUSIONS Cranial nerve palsies may be presenting symptoms of intracranial hypertension in patients with craniosynostosis. Multidisciplinary evaluation and treatment is paramount for appropriate management.
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Affiliation(s)
- Daniel Y Cho
- Division of Plastic Surgery, Department of Surgery, University of Washington School of Medicine, Seattle, USA
| | - Kelly N Evans
- Department of Pediatrics, University of Washington School of Medicine, Seattle, USA
| | | | - Amy Lee
- Department of Neurological Surgery, University of Washington School of Medicine, Seattle, USA
| | - Srinivas M Susarla
- Division of Plastic Surgery, Department of Surgery, University of Washington School of Medicine, Seattle, USA; Department of Oral and Maxillofacial Surgery, University of Washington School of Dentistry, Seattle, USA.
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22
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Riordan CP, Zurakowski D, Meier PM, Alexopoulos G, Meara JG, Proctor MR, Goobie SM. Minimally Invasive Endoscopic Surgery for Infantile Craniosynostosis: A Longitudinal Cohort Study. J Pediatr 2020; 216:142-149.e2. [PMID: 31685225 DOI: 10.1016/j.jpeds.2019.09.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/22/2019] [Accepted: 09/13/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To evaluate patient outcomes of minimally invasive endoscopic strip craniectomy (ESC) for craniosynostosis. STUDY DESIGN This is a retrospective cohort analysis (2004-2018) of 500 consecutive infants with craniosynostosis treated by ESC with orthotic therapy at a single center. Operative outcomes included transfusions, complications, and reoperations as well as head circumference change based on World Health Organization percentiles. Multivariable logistic regression was used to identify risk factors associated with blood transfusion. Paired t tests were used for within-patient comparisons and Fisher exact test to compare syndromic and nonsyndromic subgroups. RESULTS ESC was associated with low rates of blood transfusion (6.6%), complications (1.4%), and reoperations (3.0%). Risk factors for transfusion included syndromic craniosynostosis (P = .01) and multiple fused sutures (P = .02). Median surgical time was 47 minutes, and hospital length of stay 1 day. Transfusion and reoperation rates were higher among syndromic patients (both P < .001). Head circumference normalized by 12 months of age relative to World Health Organization criteria in infants with sagittal, coronal, and multisuture craniosynostosis (all P < .001). CONCLUSIONS ESC is a safe, effective, and durable correction of infantile craniosynostosis. ESC can achieve head growth normalization with low risks of blood transfusion, complications, or reoperation. Early identification of craniosynostosis in the newborn period and prompt referral by pediatricians allows families the option of ESC vs larger and riskier open reconstruction procedures.
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Affiliation(s)
- Coleman P Riordan
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - David Zurakowski
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA; Department of General Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Petra M Meier
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Georgios Alexopoulos
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - John G Meara
- Department of Plastic and Oral Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Mark R Proctor
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Susan M Goobie
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA.
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23
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Proctor MR, Meara JG. A review of the management of single-suture craniosynostosis, past, present, and future. J Neurosurg Pediatr 2019; 24:622-631. [PMID: 31786542 DOI: 10.3171/2019.7.peds18585] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 07/29/2019] [Indexed: 11/06/2022]
Abstract
BACKGROUND Craniosynostosis is a condition in which 2 or more of the skull bones fuse prematurely. The spectrum of the disorder most commonly involves the closure of a single suture in the skull, but it can also involve syndromic diagnoses in which multiple skull bones and/or bones outside of the cranium are affected. Craniosynostosis can result in cosmetic deformity as well as potential limitations in brain growth and development, and the neurocognitive impact of the condition is just starting to be studied more thoroughly. Our knowledge regarding the genetics of this condition has also evolved substantially. In this review, the authors explore the medical and surgical advancements in understanding and treating this condition over the past century, with a focus on how the diagnosis and treatment have evolved. METHODS In this review article, the authors, who are the leaders of a craniofacial team at a major academic pediatric hospital, focus on single-suture craniosynostosis (SSC) affecting the 6 major cranial sutures and discuss the evolution of the treatment of SSC from its early history in modern medicine through the current state of the art and future trends. This discussion is based on the authors' broad experience and a comprehensive review of the literature. SUMMARY The management of SSC has evolved substantially over the past 100 years. There have been major advances in technology and medical knowledge that have allowed for safer treatment of this condition through the use of newer techniques and technologies in the fields of surgery, anesthesia, and critical care. The use of less invasive surgical techniques along with other innovations has led to improved outcomes in SSC patients. The future of SSC treatment will likely be guided by elucidation of the causes of neurocognitive delay in these children and assessment of how the timing and type of surgery can mitigate adverse outcomes.
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Affiliation(s)
| | - John G Meara
- 2Plastic and Oral Surgery, Boston Children's Hospital, Boston, Massachusetts
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24
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Abstract
BACKGROUND While there has been ample interest and literature published regarding craniosynostosis surgical technique, there are few reports on adverse hospital and health system outcomes. The purpose of this study was to describe rate of and risk factors for complications, and adverse outcomes following craniosynostosis reconstruction. METHODS This study retrospectively reviewed the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) Pediatric database and identified all patients undergoing craniosynostosis repair from 2012 to 2016. Univariate logistic regression analysis was used to identify significant associations between preoperative risk factors and adverse outcomes. Multivariate logistic regression analysis was then used to identify independent risk factors and causes of prolonged operative times, transfusions, reoperation, prolonged length of hospital stays, and readmission. RESULTS There were 3924 patients included who underwent craniosynostosis repair, of whom 1732 underwent frontoorbital advancement and 2192 underwent cranial vault remodeling. Transfusion was the most common NSQIP reportable outcome, occurring for 66.5% of all patients. The incidence of reoperation was 2.4% and readmission was 3.0%. CONCLUSION This study provides a large descriptive analysis of craniosynostosis repair throughout the United States. Largely nonmodifiable patient risk factors lead to worse health system metrics, with young age, gastrointestinal comorbidities, American Society of Anesthesiologist scores of 3 and greater, reoperation, and a prolonged length of stay as independent risk factors for readmission. This analysis can be used to identify the standard of practice in synostosis care and enhance the implementation of ancillary care services to provide safe and cost-effective care for patients undergoing craniosynostosis repair.
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25
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Evaluation of Direct Surgical Remodeling of Frontal Bossing in Patients With Sagittal Synostosis. J Craniofac Surg 2019; 30:2350-2354. [PMID: 31633666 DOI: 10.1097/scs.0000000000005786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The need for surgical correction of frontal bossing in patients with sagittal synostosis is currently debated. The authors retrospectively analyzed frontal bossing in patients with isolated, nonsyndromic sagittal synostosis who underwent calvarial remodeling with and without frontal craniotomy and compared with control subjects. METHODS The authors analyzed computed tomography (CT) scans of patients with sagittal synostosis <9 months of age (6.2 ± 1.6 months) who underwent modified-pi procedure either with frontal craniotomy (FC, n = 15) or without frontal craniotomy (NFC, n = 10). Only patients treated with both pre-operative and 1-year post-operative CT scans were included. Non-synostotic age-matched control scans were also analyzed. Cephalic index (CI), 3 previously validated measures of frontal bossing (bossing angle, horizontal bossing ratio, and vertical bossing ratio), and pre-nasion volume ratio were obtained. Additionally, three-dimensional photographs of 10 FC patients were evaluated for frontal bossing between 1 and 8 years post-operatively. RESULTS Pre-operatively, no significant differences were found between the 2 groups (.064<P < 0.940). Both groups showed greater scaphocephaly and frontal bossing compared to controls (P < 0.001). One-year post-operatively, all measures improved but remained significantly different than normal values except: CI of NFC patients (P = 0.296); bossing angle (P = 0.068) and horizontal bossing ratio (P = 0.129) of FC patients. Compared to NFC patients, horizontal bossing ratio was significantly improved in FC patients (P = 0.017, mean difference of 0.047). No other statistically significant differences were found between the 2 techniques (0.127<P < 0.637).In our long-term study of FC patients up to 9 years of age (n = 10), the authors analyzed forehead inclination as our measure of frontal bossing in three-dimensional photographs. A linear regression analysis showed a significant reduction in forehead inclination with age, decreasing 1.3 ± 0.4 degrees per year (P = 0.021). Forehead inclination for controls did not change significantly with age (P = 0.558). CONCLUSIONS At 1-year following modified-pi procedure, FC patients approached normalization of their forehead morphology to a greater extent than NFC patients. However, neither group completely normalized during this time period. Frontal bossing in FC patients continued to decrease with age, which reveals the post-operative dynamic nature of frontal bone morphology during childhood for these patients.
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Postoperative Ketorolac Administration Is Not Associated with Hemorrhage in Cranial Vault Remodeling for Craniosynostosis. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2019; 7:e2401. [PMID: 31592008 PMCID: PMC6756670 DOI: 10.1097/gox.0000000000002401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 06/28/2019] [Indexed: 11/25/2022]
Abstract
Nonsteroidal anti-inflammatory drugs have been used as part of multimodal postoperative analgesic regimens to reduce the necessity of opioids. However, due to its effect on platelet function, there is a hesitation to utilize ketorolac postoperatively. The goal of this study is to analyze our experience utilizing ketorolac in patients who underwent major cranial vault remodeling (CVR) for craniosynostosis with an emphasis on postoperative hemorrhage and complications.
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27
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Twenty-Year Outcome Experience With Open Craniosynostosis Repairs: An Analysis of Reoperation and Complication Rates. Ann Plast Surg 2019. [PMID: 29537994 DOI: 10.1097/sap.0000000000001365] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Surgical intervention during infancy for both syndromic and nonsyndromic patients with craniosynostosis remains the criterion standard of treatment with the 2 main options being open vault remodeling versus minimally invasive surgery. Although open cranial vault remodeling was initially considered a high-risk procedure, many advances have improved its safety. Despite this, there is a paucity of literature on the long-term outcomes of contemporary open craniosynostosis repair. METHODS A retrospective review of all patients who underwent primary open cranial vault repair for craniosynostosis by a single surgeon (J.A.A.) at New York-Presbyterian Hospital from 1995 to 2015 was performed. RESULTS For primary open repair, 81 patients (46 males, 35 females) were analyzed, and affected sutures included unicoronal (28), bicoronal (7), metopic (24), sagittal (11), lambdoid (2), and multisuture (9). Fourteen patients (17.3%) were syndromic. Mean (SD) operative patient age was 13.81 (16.24) months: 34 (42%) were 0 to 6 months; 26 (32%), 7 to 12 months; and 21 (26%), 12 months of age or older. There were no intraoperative complications. Mean (SD) estimated blood loss for the plastic surgery portion of all cases was 74.53 (72.34) mL, and total estimated blood loss was 174.93 (182.23) mL. Mean (SD) hospital length of stay was 4.31 (1.59) days. One syndromic patient was readmitted for a wound infection (1.2%) that was successfully treated with antibiotics, and 2 syndromic patients (2.5%) had reoperation for fronto-orbital readvancement. CONCLUSIONS This 20-year experience demonstrates the safety of modern open craniosynostosis repairs at a large academic medical center with low rates of mortality (0%), complications (1.2%), and reoperations (2.5%).
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28
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Cooper DC, Peterson EC, Grellner CG, Naidoo SD, Skolnick GB, Pfeifauf KD, Smyth MD, Snyder-Warwick AK, Patel KB. Cleft and Craniofacial Multidisciplinary Team Clinic: A Look at Attrition Rates for Patients With Complete Cleft Lip and Palate and Nonsyndromic Single-Suture Craniosynostosis. Cleft Palate Craniofac J 2019; 56:1287-1294. [PMID: 31195806 DOI: 10.1177/1055665619856245] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To evaluate attrition rates prior to expected completion of team care for children with complete cleft lip and palate (cleft) or nonsyndromic single-suture craniosynostosis (synostosis). DESIGN A single-institution retrospective review of attendance data from 2002 to 2016. SETTING Single cleft and craniofacial center in the United States. PATIENTS/PARTICIPANTS A sample of 983 patients with either cleft or synostosis. Patients who were more than 2 to 3 years from their last visit were considered lost to follow-up. Patients with cleft older than 16 years or synostosis over 11 years were considered graduated from team care. RESULTS Survival analysis shows that in our patients with cleft, 25% leave before age 8 and over 60% are lost from team by age 16. In patients with synostosis, 25% leave before age 6 and 45% are lost by age 11. Cox regression showed underrepresented minorities being 1.7 times more likely to become lost in the cleft group (hazard ratio: 1.66, 95% confidence interval [CI]: 1.01-2.74). CONCLUSIONS Overall, attrition rates were high at our institution. Many patients are lost to follow-up prior to receiving key medical interventions. Improved family education and personalized care are needed to help ensure continuity of care.
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Affiliation(s)
- Danielle C Cooper
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Erin C Peterson
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Cheryl G Grellner
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Sybill D Naidoo
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Gary B Skolnick
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Kristin D Pfeifauf
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Matthew D Smyth
- Department of Neurosurgery, Washington University in St Louis, St Louis, MO, USA
| | - Alison K Snyder-Warwick
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Kamlesh B Patel
- Division of Plastic and Reconstructive Surgery, Washington University in St Louis, St Louis, MO, USA
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Prevost R, Keribin P, Batut C, Guichard B, Ambroise B, Bohra A, Benateau H, Veyssiere A. Management of non-syndromic craniosynostoses in France in 2015: A national survey. J Craniomaxillofac Surg 2019; 47:556-560. [DOI: 10.1016/j.jcms.2019.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/13/2018] [Accepted: 01/23/2019] [Indexed: 11/17/2022] Open
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Practical Computed Tomography Scan Findings for Distinguishing Metopic Craniosynostosis from Metopic Ridging. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2019; 7:e1944. [PMID: 31044100 PMCID: PMC6467624 DOI: 10.1097/gox.0000000000001944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 07/27/2018] [Indexed: 11/26/2022]
Abstract
Background: Premature fusion of the metopic suture (ie, metopic craniosynostosis) can be difficult to discriminate from physiological closure of the metopic suture with ridging (MR). Yet, MCS is treated surgically, whereas MR is treated nonsurgically. Often, the diagnosis can be made by physical examination alone, but in difficult cases, a computed tomography (CT) scan can add additional diagnostic information. Methods: We de-identified, randomized, and analyzed the CT scans of patients with MCS (n = 52), MR (n = 20) and age-matched normative controls (n = 52) to identify specific findings helpful in distinguishing between MCS and MR. Four expert clinicians were blinded to the clinical diagnosis and assessed each CT for features of the orbits, frontal bones, and inner table of calvaria. Results: Although no single feature was diagnostic of MCS, we identified several signs that were correlated with MCS, MR, or controls. Features such as “posteriorly displaced frontal bone” and “frontal bone tangent to mid-orbit or medial” demonstrated higher correlation with MCS than MR and the addition of other features improves the accuracy of diagnosis as did inclusion of the interfrontal divergence angle. Conclusion: The presence of a closed metopic suture in addition to other CT scan findings may improve the accuracy of diagnosing MCS, MR, and normocephaly.
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Impact of Cardiac Risk Factors on Complications Following Cranial Vault Remodeling: Analysis of the 2012 to 2016 National Safety Quality Improvement Program-Pediatric Database. J Craniofac Surg 2019; 30:442-447. [PMID: 30615003 DOI: 10.1097/scs.0000000000005114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Congenital cardiac malformations have been reported in 8% of patients with craniosynostosis undergoing cranial vault remodeling (CVR), but associations with surgical outcomes are unknown. This study evaluated postoperative complications in patients who underwent CVR for craniosynostosis with or without cardiac risk factors (CRF) using the National Safety Quality Improvement Program-Pediatric (NSQIP-P) database. NSQIP-P database was queried for patients <2 years with craniosynostosis who underwent CVR from 2012 to 2016 based on diagnosis and procedure codes. The primary outcome was a composite of available NSQIP-P complications. Analysis compared patients with craniosynostosis based on the presence or absence of CRF. Univariate and multiple logistic regression identified risk factors associated with postoperative complications. A total of 3293 patients met inclusion criteria (8% with CRF). Two-thirds of patients experienced at least 1 complication, though patients with CRF experienced a greater proportion (74% vs 66%, P = 0.001). Univariate analysis identified associations between post-operative complications and age, ASA class, supplemental oxygen, neuromuscular disorders, preoperative nutritional supplementation, interventricular hemorrhage, and CRF. On multivariate regression, only older age (OR 1.17, 95% CI 1.01-1.36) and longer operative duration (OR 1.01, 95% CI 1.01-1.01) were associated with greater odds of postoperative complications. The most common complication in patients with craniosynostosis who undergo CVR is bleeding requiring transfusion. Older age and longer operative duration were associated with postoperative complications. Although patients with CRF have more postoperative complications, CRF was not a risk factor on adjusted analysis.
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Comparison of Distraction Osteogenesis and Single-Stage Remodeling for Correction of Unilateral Coronal Craniosynostosis. J Craniofac Surg 2019; 30:370-376. [DOI: 10.1097/scs.0000000000005038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Jimenez DF, McGinity MJ, Barone CM. Endoscopy-assisted early correction of single-suture metopic craniosynostosis: a 19-year experience. J Neurosurg Pediatr 2018; 23:61-74. [PMID: 30265229 DOI: 10.3171/2018.6.peds1749] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 06/14/2018] [Indexed: 11/06/2022]
Abstract
In BriefThe long-term results of treating infants with metopic craniosynostosis by using endoscopic, minimally invasive techniques are reported. The impetus arose from the lack of consistent and favorable outcomes associated with calvarial vault remodeling techniques and from the very traumatic and invasive nature of these procedures. The results presented show excellent and consistent long-term outcomes that are superior to traditional methods and are associated with minimal trauma, blood loss, and anesthetic exposure, and with short surgical times.
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Affiliation(s)
- David F Jimenez
- 1Department of Neurosurgery, University of Texas Health San Antonio; and
| | - Michael J McGinity
- 1Department of Neurosurgery, University of Texas Health San Antonio; and
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Proof of Concept Study for the Design, Manufacturing, and Testing of a Patient-Specific Shape Memory Device for Treatment of Unicoronal Craniosynostosis. J Craniofac Surg 2018; 29:45-48. [PMID: 29040141 DOI: 10.1097/scs.0000000000004025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Treatment of unicoronal craniosynostosis is a surgically challenging problem, due to the involvement of coronal suture and cranial base, with complex asymmetries of the calvarium and orbit. Several techniques for correction have been described, including surgical bony remodeling, early strip craniotomy with orthotic helmet remodeling and distraction. Current distraction devices provide unidirectional forces and have had very limited success. Nitinol is a shape memory alloy that can be programmed to the shape of a patient-specific anatomy by means of thermal treatment.In this work, a methodology to produce a nitinol patient-specific distractor is presented: computer tomography images of a 16-month-old patient with unicoronal craniosynostosis were processed to create a 3-dimensional model of his skull and define the ideal shape postsurgery. A mesh was produced from a nitinol sheet, formed to the ideal skull shape and heat treated to be malleable at room temperature. The mesh was afterward deformed to be attached to a rapid prototyped plastic skull, replica of the patient initial anatomy. The mesh/skull construct was placed in hot water to activate the mesh shape memory property: the deformed plastic skull was computed tomography scanned for comparison of its shape with the initial anatomy and with the desired shape, showing that the nitinol mesh had been able to distract the plastic skull to a shape close to the desired one.The shape-memory properties of nitinol allow for the design and production of patient-specific devices able to deliver complex, preprogrammable shape changes.
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Virtual Surgical Planning for Correction of Delayed Presentation Scaphocephaly Using a Modified Melbourne Technique. J Craniofac Surg 2018; 29:914-919. [DOI: 10.1097/scs.0000000000004290] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Predictors of Postoperative Complications of Craniosynostosis Repair in the National Inpatient Sample. Ann Plast Surg 2018; 80:S261-S266. [DOI: 10.1097/sap.0000000000001383] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Craniosynostosis and Guanine Nucleotide-binding Protein Alpha Stimulating Mutation: Risk of Bleeding Diathesis and Circulatory Collapse in Patients Undergoing Cranial Vault Reconstruction. J Craniofac Surg 2018; 28:1286-1288. [PMID: 28358762 DOI: 10.1097/scs.0000000000003592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Reconstruction of the craniosynostosis deformity is a relatively safe operation with low overall complication risks. Despite expected risk of significant blood loss, life-threatening bleeding is relatively rare, and there is a low incidence of reported deaths in the literature. Several modalities have been described for perioperative mitigation of blood loss and transfusion requirements. Due to the low overall risk of life-threatening bleeding and circulatory collapse, it is judicious that any potential causes of such unusual but potentially significant fatal bleeding complication be evaluated and reported to increase awareness for craniofacial surgeons treating these conditions. In this report and literature review, the authors present a highly unusual patient with significant bone bleeding and circulatory collapse in a metopic craniosynostosis patient with guanine nucleotide-binding protein alpha stimulating (GNAS) mutation; perform a literature review regarding bleeding diathesis in craniosynostosis patients with GNAS mutations; and suggest guidelines to potentially prevent mortality in such patients.
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The Directive Growth Approach for Nonsyndromic, Unicoronal Craniosynostosis: Patient and Clinical Outcomes. J Craniofac Surg 2017; 28:2108-2112. [PMID: 28968328 PMCID: PMC5673299 DOI: 10.1097/scs.0000000000004179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Deformities of the cranium in patients with nonsyndromic single-suture synostosis occur because of growth restriction at fused sutures and growth over compensation at normal sutures. Traditional surgery includes ostectomies of the synostotic suture to release these restricted areas and osteotomies to enable immediate cranial remodeling. In the process of reshaping the cranium, traditional approaches usually involve obliteration of both the normal functioning suture and the pathologic suture. The directive growth approach (DGA) is a new, simpler, more natural way to repair deformities caused by single-suture cranial synostosis. The DGA works by reversing the original deforming forces by temporarily restricting growth in areas of over compensation and forcing growth in areas of previous synostotic restriction. Most importantly, it preserves a normal functioning suture to allow for improved future cranial growth. Eighteen consecutive nonsyndromic patients with unilateral coronal synostosis were used to illustrate the efficacy of the DGA. Ten patients who underwent DGA treatment were compared with a control group of 8 patients treated with traditional frontal orbital advancement. Postoperative three-dimensional computed tomography (CT) comparison measurements were taken, including bilateral vertical and transverse orbital dimensions, lateral orbital rim to external auditory canal, and forehead measurements from the superior aspect of the orbital rim to the pituitary fossa. The traditional treatment group showed absence of the coronal sutures bilaterally on long-term CT scans. The DGA group showed normal coronal sutures on the unaffected sides. Postoperative CT measurements showed no statistical difference between the 2 techniques (P < 0.05).
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A Treatment Algorithm for Patients Presenting with Sagittal Craniosynostosis after the Age of 1 Year. Plast Reconstr Surg 2017; 140:582-590. [DOI: 10.1097/prs.0000000000003602] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Comparison between piezosurgery and conventional osteotomy in cranioplasty with fronto-orbital advancement. J Craniomaxillofac Surg 2017; 45:395-400. [DOI: 10.1016/j.jcms.2016.12.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 10/25/2016] [Accepted: 12/15/2016] [Indexed: 11/23/2022] Open
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