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Bedioui A, Elia A, Still M, Aboubakr O, Leclerc A, Planet M, Simboli GA, Moiraghi A, Fathallah H, Parraga E, Benevello C, Dezamis E, Roux A, Zanello M, Pallud J. Predictors of postoperative epidural hematomas after custom-made porous hydroxyapatite cranioplasty: a single-center experience of 194 consecutive cases. Neurosurg Rev 2023; 46:132. [PMID: 37264174 DOI: 10.1007/s10143-023-02039-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/07/2023] [Accepted: 05/25/2023] [Indexed: 06/03/2023]
Abstract
Cranioplasty is important for improving cosmesis and functional recovery after decompressive craniectomy. We assessed the incidence and predictors of post-cranioplasty epidural hematomas requiring surgical evacuation. A single-institution, retrospective study enrolled 194 consecutive patients who underwent a cranioplasty using custom-made hydroxyapatite between February 2008 and April 2022. Variables associated with postoperative epidural hematoma requiring surgical evacuation at the p < 0.1 level in unadjusted analysis were entered into multivariable analyses. Nine patients (4.6%) experienced postoperative epidural hematomas requiring evacuation, with time interval between craniectomy and cranioplasty <6 months (adjusted odds ratio (aOR), 20.75, p = 0.047), cranioplasty-to-bone shift > half of the bone thickness (aOR, 17.53, p = 0.008), >10 mm difference between pre-cranioplasty and post-cranioplasty midline brain shift contralateral to the cranioplasty (aOR, 17.26, p < 0.001), and non-resorbable duraplasty (aOR, 17.43, p = 0.011) identified as independent predictors. Seventeen patients (8.8%) experienced post-cranioplasty hydrocephalus requiring shunt placement. Twenty-six patients (13.4%) experienced postoperative infection. Sixteen patients (8.2%) had postoperative epileptic seizures. The identification of independent predictors of post-cranioplasty epidural hematomas requiring surgical evacuation will help identify at-risk patients, guide prophylactic care, and reduce morbidity of this common and important procedure.
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Affiliation(s)
- Aziz Bedioui
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Angela Elia
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Neurosurgery Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France
| | - Megan Still
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Oumaima Aboubakr
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Arthur Leclerc
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Department of Neurosurgery, Centre Hospitalier Universitaire Caen, Caen, France
| | - Martin Planet
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Giorgia Antonia Simboli
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France
| | - Alessandro Moiraghi
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France
| | - Houssem Fathallah
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Eduardo Parraga
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Chiara Benevello
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Edouard Dezamis
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
| | - Alexandre Roux
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France
| | - Marc Zanello
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France
- Université Paris Cité, Paris, France
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France
| | - Johan Pallud
- Department of Neurosurgery, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, 1, rue Cabanis, 75674, Paris, France.
- Université Paris Cité, Paris, France.
- Inserm, U1266, IMA-Brain, Centre de Psychiatrie et Neurosciences, Paris, France.
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Changes in Spectral Fluorescence Properties of a Near-Infrared Photosensitizer in a Nanoform as a Coating of an Optical Fiber Neuroport. PHOTONICS 2021. [DOI: 10.3390/photonics8120556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In this work, we tested a new approach to assess the presence of inflammatory process in the implant area using spectral methods and the technique of fiber fluorescence analysis of photosensitizers in nanoform. First of all, the spectral characteristics of the photosensitizer when interacting with the porous surface of the implant, based on hydroxyapatite under in vitro and in vivo conditions, were determined. Thus, it was shown that spectral characteristics of photosensitizers can be used for judgement on the process of inflammation in the implant area and thus on the local presence of the immunocompetent cells. The analysis was performed at a sufficient depth in the biotissue by using the near-infrared spectral region, as well as two different methods: fiber-based laser spectroscopy and fiber-optic neuroscopy, which served to monitor the process and regular fluorescence diagnosis of the studied area. Fluorescence spectroscopic analysis was performed on experimental animals in vivo, i.e., under conditions of active immune system intervention, as well as on cell cultures in vitro in order to judge the role of the immune system in the interaction with the implant in comparison. Thus, the aim of the study was to determine the relationship between the fluorescence signal of nanophotosensitizers in the near infrared spectral region and its parameters with the level of inflammation and the type of surface with which the photosensitizer interacts in the implant area. Thus, fiber-optic control opens up new approaches for further diagnosis and therapy in the implant area, making immune cells a prime target for advanced therapies.
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Sharma N, Aghlmandi S, Dalcanale F, Seiler D, Zeilhofer HF, Honigmann P, Thieringer FM. Quantitative Assessment of Point-of-Care 3D-Printed Patient-Specific Polyetheretherketone (PEEK) Cranial Implants. Int J Mol Sci 2021; 22:8521. [PMID: 34445228 PMCID: PMC8395180 DOI: 10.3390/ijms22168521] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/26/2021] [Accepted: 08/05/2021] [Indexed: 12/18/2022] Open
Abstract
Recent advancements in medical imaging, virtual surgical planning (VSP), and three-dimensional (3D) printing have potentially changed how today's craniomaxillofacial surgeons use patient information for customized treatments. Over the years, polyetheretherketone (PEEK) has emerged as the biomaterial of choice to reconstruct craniofacial defects. With advancements in additive manufacturing (AM) systems, prospects for the point-of-care (POC) 3D printing of PEEK patient-specific implants (PSIs) have emerged. Consequently, investigating the clinical reliability of POC-manufactured PEEK implants has become a necessary endeavor. Therefore, this paper aims to provide a quantitative assessment of POC-manufactured, 3D-printed PEEK PSIs for cranial reconstruction through characterization of the geometrical, morphological, and biomechanical aspects of the in-hospital 3D-printed PEEK cranial implants. The study results revealed that the printed customized cranial implants had high dimensional accuracy and repeatability, displaying clinically acceptable morphologic similarity concerning fit and contours continuity. From a biomechanical standpoint, it was noticed that the tested implants had variable peak load values with discrete fracture patterns and failed at a mean (SD) peak load of 798.38 ± 211.45 N. In conclusion, the results of this preclinical study are in line with cranial implant expectations; however, specific attributes have scope for further improvements.
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Affiliation(s)
- Neha Sharma
- Clinic of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (N.S.); (H.-F.Z.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland;
| | - Soheila Aghlmandi
- Basel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical Research, University Hospital Basel, CH-4031 Basel, Switzerland;
| | - Federico Dalcanale
- Institute for Medical Engineering and Medical Informatics, University of Applied Sciences and Arts North-Western Switzerland, CH-4132 Muttenz, Switzerland; (F.D.); (D.S.)
| | - Daniel Seiler
- Institute for Medical Engineering and Medical Informatics, University of Applied Sciences and Arts North-Western Switzerland, CH-4132 Muttenz, Switzerland; (F.D.); (D.S.)
| | - Hans-Florian Zeilhofer
- Clinic of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (N.S.); (H.-F.Z.)
| | - Philipp Honigmann
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland;
- Hand Surgery, Cantonal Hospital Baselland, CH-4410 Liestal, Switzerland
- Amsterdam UMC, Department of Biomedical Engineering and Physics, University of Amsterdam, Amsterdam Movement Sciences, NL-1105 Amsterdam, The Netherlands
| | - Florian M. Thieringer
- Clinic of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (N.S.); (H.-F.Z.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland;
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Zaed I, Rossini Z, Faedo F, Fontanella MM, Cardia A, Servadei F. Long-term follow-up of custom-made porous hydroxyapatite cranioplasty in adult patients: a multicenter European study. Can we trust self-reported complications? J Neurosurg Sci 2020; 66:335-341. [PMID: 32989979 DOI: 10.23736/s0390-5616.20.05138-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Cranioplasty is a surgical intervention aiming to re-establish the integrity of skull defects. Autologous bone and different heterologous materials are used for this purpose, with various reported related complications. The aim of the study was to evaluate the complication rate in a multicentric cohort of patients underwent porous hydroxyapatite (PHA) cranioplasty implantation and to assess the validity of company post-market clinical analysis. METHODS Authors analyzed a company based register of 6279 PHA cranioplasty implanted all over the world. In these adult patients only self-reported complications were available. We then obtained the data of adult patients treated with custom-made porous HA prostheses (CustomBone Service) in 20 institutions from different European countries through an on-site interview with the physicians in charge of the patients (494 patients). The endpoints were the incidence of adverse events and of related implant removal. RESULTS The groups of patients had similar demographics characteristics. The average follow-up was 26.7 months. A significantly higher number of complications was recorded in the group of patients underwent onsite interview. Thirty-nine complications were reported (7.89%) with an explantation rate of 4.25% (21 cases) in the series, compared to the data reported from the Company (complications rate of 3.3% and explantation rate of 3.1%). The most common complications were infection (4.86%), hematomas (1.22%), fractures (1.01%), mobilization (0.4%) and scar retraction (0.4%). CONCLUSIONS Our data confirm that porous HA cranioplasty is at least as effective as other heterologous materials to repair cranial defects. Another interesting finding is that self-reporting complicantions by surgeons does not give a precise picture of the real rate of complications of the devices. These data in future studies need to be re-confirmed with on-site interviews.
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Affiliation(s)
- Ismail Zaed
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy - .,Department of Neurosurgery, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy -
| | - Zefferino Rossini
- Department of Neurosurgery, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
| | - Francesca Faedo
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Marco M Fontanella
- Neurosurgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Andrea Cardia
- Department of Neurosurgery, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
| | - Franco Servadei
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy.,Department of Neurosurgery, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
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Liu L, Lu ST, Liu AH, Hou WB, Cao WR, Zhou C, Yin YX, Yuan KS, Liu HJ, Zhang MG, Zhang HJ. Comparison of complications in cranioplasty with various materials: a systematic review and meta-analysis. Br J Neurosurg 2020; 34:388-396. [PMID: 32233810 DOI: 10.1080/02688697.2020.1742291] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Objective: Meta-analysis to evaluate complications in the use of autogenous bone and bone substitutes and to compare bone substitutes, specifically HA, polyetheretherketone (PEEK) and titanium materials.Methods: Search of PubMed, Cochrane, Embase and Google scholar to identify all citations from 2010 to 2019 reporting complications regarding materials used in cranioplasty.Results: 20 of 2266 articles met the inclusion criteria, including a total of 2913 patients. The odds of overall complication were significantly higher in the autogenous bone group (n = 214/644 procedures, 33.2%) than the bone substitute groups (n = 116/436 procedures, 26.7%, CI 1.29-2.35, p < 0.05). In bone substitutes groups, there was no significant difference in overall complication rate between HA and Ti (OR, 1.2; 95% CI, 0.47-3.14, p = 0.69). PEEK has lower overall complication rates (OR, 0.51; 95% CI, 0.30-0.87, p = 0.01) and lower implant exposure rates (OR, 0.17; 95% CI, 0.06-0.53, p = 0.002) than Ti, but there was no significant difference in infection rates and postoperative hematoma rates.Conclusions: Cranioplasty is associated with high overall complication rates with the use of autologous bone grafts compared with bone substitutes. PEEK has a relatively low overall complication rates in substitutes groups, but still high infection rates and postoperative hematoma rates. Thus, autologous bone grafts should only be used selectively, and prospective long-term studies are needed to further refine a better material in cranioplasty.
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Affiliation(s)
- Liming Liu
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Shou-Tao Lu
- Tenth People's Hospital, Tongji University, Shanghai, China
| | - Ai-Hua Liu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Department of Neurointerventional Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wen-Bo Hou
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Wen-Rui Cao
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Chao Zhou
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Yu-Xia Yin
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Kun-Shan Yuan
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China
| | - Han-Jie Liu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ming-Guang Zhang
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hai-Jun Zhang
- National United Engineering Laboratory for Biomedical Material Modification, Dezhou, China.,Tenth People's Hospital, Tongji University, Shanghai, China.,Faculty of Medicine, Aalborg University, Alborg, Denmark
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Spennato P, Canella V, Aliberti F, Russo C, Ruggiero C, Nataloni A, Lombardo M, Cinalli G. Hydroxyapatite ceramic implants for cranioplasty in children: a retrospective evaluation of clinical outcome and osteointegration. Childs Nerv Syst 2020; 36:551-558. [PMID: 31786632 DOI: 10.1007/s00381-019-04423-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 10/29/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Cranioplasty in children is a controversial and challenging issue, since there is still no consensus on the ideal material. Main problems in paediatric age are represented by the child's growing skull, the lower bone thickness and the high incidence of cerebrospinal fluid (CSF) disorders or brain swelling. Autologous bone is still considered the "gold standard". When it is not available, a wide range of alloplastic materials have been proposed. Hydroxyapatite, a ceramic-based derivative, bears a chemical composition very similar to the human natural bone, making this material a valuable alternative to other cranioplasty solutions. METHODS All patients implanted with a custom-made porous hydroxyapatite device at Santobono-Pausilipon Hospital in Naples were retrospectively reviewed. A follow-up CT scan of the skull was performed from 1 up to 48 months postoperatively to document the bone ingrowth as well as the osteointegration process. The bone density was measured as according to the Hounsfield scale at the bone-implant interface. RESULTS Between 2014 and 2018, 11 patients (7 males, 4 females) underwent cranioplasty with hydroxyapatite ceramic implants (HAP). Patients' age ranged between 3 and 16 years old. Initial aetiology was trauma in most cases. Two subjects were implanted with HAP as primary cranioplasty, 9 as revision surgery following previous cranioplasty failure. Sites of the cranial defect were unilateral fronto-temporo-parietal (N = 8), unilateral frontal (N = 1) and bifrontal (N = 2). Two patients with large bilateral defects received two prostheses. In one of these, the two prostheses were explanted and replaced with two back-up implants (accounting for a total of 15 implants in 11 patients). Osteointegration was measurable for 12 out of 15 implanted devices. The mean percentage was about 51%. There were six asymptomatic prosthesis fractures (40%), all occurring within 6 months from implant. In one case, the bifrontal prostheses were explanted and replaced. This was the only patient who underwent revision surgery. CONCLUSION Hydroxyapatite ceramic implants represent a valid alternative to other cranioplasty solutions. Where coaptation occurs correctly, with good osteointegration, implant mechanical resistance increases over time.
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Affiliation(s)
- Pietro Spennato
- Department of Neurosurgery Santobono-Pausipilon children's hospital, Naples, Italy.
| | | | - Ferdinado Aliberti
- Department of Neurosurgery Santobono-Pausipilon children's hospital, Naples, Italy
| | - Carmela Russo
- Department of Neuroradiology, Santobono-Pausilipon Children's Hospital, Naples, Italy
| | - Claudio Ruggiero
- Department of Neurosurgery Santobono-Pausipilon children's hospital, Naples, Italy
| | | | - Milena Lombardo
- Department of Neurosurgery Santobono-Pausipilon children's hospital, Naples, Italy
| | - Giuseppe Cinalli
- Department of Neurosurgery Santobono-Pausipilon children's hospital, Naples, Italy
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Morselli C, Zaed I, Tropeano MP, Cataletti G, Iaccarino C, Rossini Z, Servadei F. Comparison between the different types of heterologous materials used in cranioplasty: a systematic review of the literature. J Neurosurg Sci 2019; 63:723-736. [PMID: 31599560 DOI: 10.23736/s0390-5616.19.04779-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
INTRODUCTION The choice of heterologous materials for cranioplasty after decompressive craniectomy is still difficult. The aim of this study is to examine the association between material of choice and related complications to suggest the best treatment option. EVIDENCE ACQUISITION A systematic review was performed for articles reporting cranioplasty comparing the following heterologous implants: titanium, poli-methyl-methacrylate (PMMA), polyetheretherketone (PEEK) and hydroxyapatite (HA). Extracted data included implant materials and incidence of the most frequent complications. EVIDENCE SYNTHESIS The final selection resulted in 106 papers but according to our rules only 27 studies were included in the final analysis. Among a total of 1688 custom-made prosthesis implanted, 649 were titanium (38.49%), 298 PMMA (17.56%), 233 PEEK (13.82%), and 508 were HA (30.13%). A total of 348 complications were recorded out of 1688 reported patients (20.64%). In the titanium group, 139 complications were recorded (21.42%); in the PMMA group 57 (19.26%), in the PEEK group 49 (21.03%) and in the HA group 103 (20.3%). If we examine a summary of the reported complications clearly related to cranioplasty (postoperative infections, fractures and prosthesis displacement) versus type of material in multicentric and prospective studies we can see how HA group patients have less reported infections and cranioplasty explantation after infections than PMMA, PEEK and titanium. On the contrary HA patients seem to have a higher number of prosthesis displacement again if compared with the other materials. Since these data are not derived from a statistically correct analysis they should be used only to help to differentiate the properties of the various heterologous cranioplasties. CONCLUSIONS The ideal material for all heterologous cranioplasty has not yet been identified. The choice of material should be based on the clinical data of patients, such as the craniectomy size, presence of seizures, possibility of recovery, good long-term outcome associated with a cost analysis.
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Affiliation(s)
- Carlotta Morselli
- Humanitas University, Pieve Emanuele, Milan, Italy.,Department of Neuroscience, Sapienza University, Rome, Italy
| | - Ismail Zaed
- Department of Neurosurgery, Humanitas University and Research Hospital, Milan, Italy -
| | | | | | - Corrado Iaccarino
- Department of Neurosurgery, University Hospital of Parma, Parma, Italy
| | - Zefferino Rossini
- Department of Neurosurgery, Humanitas University and Research Hospital, Milan, Italy
| | - Franco Servadei
- Department of Neurosurgery, Humanitas University and Research Hospital, Milan, Italy
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Hydroxyapatite cranioplasty: a retrospective evaluation of osteointegration in 17 cases. Acta Neurochir (Wien) 2018; 160:2117-2124. [PMID: 30276548 DOI: 10.1007/s00701-018-3694-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 09/24/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Cranial reconstruction with autologous bone is still the gold standard although several biomaterials are available to re-establish the integrity of the cranial vault. Due to their biological and morphological characteristics, hydroxyapatite implants show promising results in small clinical cohort studies, especially within the paediatric population. Its biocompatibility and osteoconductivity should allow the formation of osseous bridging at the skull-prosthesis interface. OBJECTIVE To examine the possible occurrence of osteointegration and to quantify it. METHODS A retrospective study of patients with a hydroxyapatite implant from 2010 to 2014 at our neurosurgical department was conducted. Demographic, surgical and radiological data were studied. A senior neuroradiologist, a staff member neurosurgeon and a resident neurosurgeon independently performed the radiological evaluation. A new software analysis technique was developed to objectively quantify the degree of osteointegration. RESULTS Seventeen implants were evaluated with an average patient age of 39 years and a mean follow-up of 155 weeks. Through radiologic evaluation, osseous bridging was deemed higher than 50% in six prostheses and higher than 75% in three. In five patients, no osteointegration could be seen. The remaining patients exhibited sparse signs of osteointegration, estimated between 10 and 50%. Software analysis showed an average osteointegration ratio of 37.4% with a 400-HU filter and 27.3% with a 700-HU filter. CONCLUSION In this small retrospective study of cranial hydroxyapatite implants, osteointegration did occur and to a degree of more than 50% in 1/3 of the patients.
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Frassanito P, Tamburrini G, Massimi L, Peraio S, Caldarelli M, Di Rocco C. Problems of reconstructive cranioplasty after traumatic brain injury in children. Childs Nerv Syst 2017; 33:1759-1768. [PMID: 29149388 DOI: 10.1007/s00381-017-3541-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/10/2017] [Indexed: 11/29/2022]
Abstract
Cranial repair after traumatic brain injury in children is still burdened by unsolved problems and controversial issues, mainly due to the high rate of resorption of autologous bone as well as the absence of valid alternative material to replace the autologous bone. Indeed, inert biomaterials are associated to satisfactory results in the short period but bear the continuous risk of complications related to the lack of osteointegration capacity. Biomimetic materials claiming osteoconductive properties that could balance their mechanical limits seem to allow good cranial bone reconstruction. However, these results should be confirmed in the long term and in larger series. Further complicating factors that may affect cranial reconstruction after head injury should be identified in the possible associated alterations of CSF dynamics and in difficulties to manage the traumatic skin lesion and the surgical wound, which also might impact on the cranioplasty outcome. All the abovementioned considerations should be taken into account when dealing with the cranial reconstruction after decompressive craniectomy in children.
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Affiliation(s)
- Paolo Frassanito
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, Catholic University Medical School, Largo A. Gemelli, 8, 00168, Rome, Italy.
| | - Gianpiero Tamburrini
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, Catholic University Medical School, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Luca Massimi
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, Catholic University Medical School, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Simone Peraio
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, Catholic University Medical School, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Massimo Caldarelli
- Pediatric Neurosurgery, Fondazione Policlinico Universitario A. Gemelli, Catholic University Medical School, Largo A. Gemelli, 8, 00168, Rome, Italy
| | - Concezio Di Rocco
- Department of Neurosurgery, International Neuroscience Institute, Hannover, Germany
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Cho TG, Kang SH, Cho YJ, Choi HJ, Jeon JP, Yang JS. Osteoblast and Bacterial Culture from Cryopreserved Skull Flap after Craniectomy: Laboratory Study. J Korean Neurosurg Soc 2017; 60:397-403. [PMID: 28689388 PMCID: PMC5544374 DOI: 10.3340/jkns.2017.0101.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/24/2017] [Accepted: 05/04/2017] [Indexed: 11/27/2022] Open
Abstract
Objective Cranioplasty using a cryopreserved skull flap is a wide spread practice. The most well-known complications of cranioplasty are postoperative surgical infections and bone flap resorption. In order to find biological evidence of cryopreserved cranioplasty, we investigated microorganism contamination of cryopreserved skulls and cultured osteoblasts from cryopreserved skulls. Methods Cryopreserved skull flaps of expired patients stored in a bone bank were used. Cryopreserved skulls were packaged in a plastic bag and wrapped with cotton cloth twice. After being crushed by a hammer, cancellous bone between the inner and outer table was obtained. The cancellous bone chips were thawed in a water bath of 30°C rapidly. After this, osteoblast culture and general microorganism culture were executed. Osteoblast cultures were done for 3 weeks. Microorganism cultures were done for 72 hours. Results A total of 47 cryopreserved skull flaps obtained from craniectomy was enrolled. Of the sample, 11 people were women, and the average age of patients was 55.8 years. Twenty four people had traumatic brain injuries, and 23 people had vascular diseases. Among the patients with traumatic brain injuries, two had fracture compound comminuted depressed. The duration of cryopreservation was, on average, 83.2 months (9 to 161 months). No cultured osteoblast was observed. No microorganisms were cultured. Conclusion In this study, neither microorganisms nor osteoblasts were cultured. The biological validity of cryopreserved skulls cranioplasty was considered low. However, the usage of cryopreserved skulls for cranioplasty is worthy of further investigation in the aspect of cost-effectiveness and risk-benefit of post-cranioplasty infection.
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Affiliation(s)
- Tack Geun Cho
- Department of Neurosurgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Suk Hyung Kang
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Yong Jun Cho
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Hyuk Jai Choi
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Pyeong Jeon
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Seo Yang
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
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Cho YJ, Kang SH. Review of Cranioplasty after Decompressive Craniectomy. Korean J Neurotrauma 2017; 13:9-14. [PMID: 28512612 PMCID: PMC5432454 DOI: 10.13004/kjnt.2017.13.1.9] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 04/17/2017] [Accepted: 04/19/2017] [Indexed: 12/18/2022] Open
Abstract
Cranioplasty is an in evitable operation conducted after decompressive craniectomy (DC). The primary goals of cranioplasty after DC are to protect the brain, achieve a natural appearance and prevent sinking skin flap syndrome (or syndrome of the trephined). Furthermore, restoring patients' functional outcome and supplementing external defects helps patients improve their self-esteem. Although early cranioplasty is preferred in recent year, optimal timing for cranioplasty remains a controversial topic. Autologous bone flaps are the most ideal substitute for cranioplasty. Complications associated with cranioplasty are also variable, however, post-surgical infection is most common. Many new materials and techniques for cranioplasty are introduced. Cost-benefit analysis of these new materials and techniques can result in different outcomes from different healthcare systems.
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Affiliation(s)
- Yong Jun Cho
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chuncheon, Korea
| | - Suk Hyung Kang
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chuncheon, Korea
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Osteointegration in cranial bone reconstruction: a goal to achieve. J Appl Biomater Funct Mater 2016; 14:e470-e476. [PMID: 27311430 DOI: 10.5301/jabfm.5000293] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2016] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND The number of cranioplasty procedures is steadily increasing, mainly due to growing indications for decompressive procedures following trauma, tumor or malformations. Although autologous bone is still considered the gold standard for bone replacement in skull, there is an urgent need for synthetic porous implants able to guide bone regeneration and stable reconstruction of the defect. In this respect, hydroxyapatite scaffolds with highly porous architecture are very promising materials, due to the excellent biocompatibility and intrinsic osteogenic and osteoconductive properties that enable deep bone penetration in the scaffold and excellent osteointegration. Osteointegration is here highlighted as a key aspect for the early recovery of bone-like biomechanical performance, for which custom-made porous hydroxyapatite scaffolds play a major role. There are still very few cases documenting the clinical performance of porous scaffolds following cranioplasty. METHODS This paper reports 2 clinical cases where large cranial defects were repaired by the aid of porous hydroxyapatite scaffolds with customized shapes and 3D profiles (Fin-Ceramica, Faenza, Italy). RESULTS In the long term (i.e., after 2 years), these scaffolds yielded extensive osteointegration through formation and penetration of new organized bone. CONCLUSIONS These results confirm that porous hydroxyapatite scaffolds, uniquely possessing chemico-physical and morphological/mechanical properties very close to those of bone, can be considered as a tool to provide effective bone regeneration in large cranial bone defects. Moreover, they may potentially prevent most of the postsurgical drawbacks related to the use of metal or plastic implants.
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Sprio S, Dapporto M, Montesi M, Panseri S, Lattanzi W, Pola E, Logroscino G, Tampieri A. Novel Osteointegrative Sr-Substituted Apatitic Cements Enriched with Alginate. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E763. [PMID: 28773884 PMCID: PMC5457115 DOI: 10.3390/ma9090763] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 08/29/2016] [Accepted: 09/02/2016] [Indexed: 12/16/2022]
Abstract
The present work describes the synthesis of novel injectable, self-setting bone cements made of strontium-substituted hydroxyapatite (Sr-HA), obtained by single-phase calcium phosphate precursors doped with different amounts of strontium and enriched with alginate. The addition of alginate improved the injectability, cohesion, and compression strength of the cements, without affecting the hardening process. A Sr-HA cement exhibiting adequate hardening times and mechanical strength for clinical applications was further tested in vivo in a rabbit model, in comparison with a commercial calcium phosphate cement, revealing the maintenance of biomimetic composition and porous microstructure even after one month in vivo, as well as enhanced ability to induce new bone formation and penetration.
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Affiliation(s)
- Simone Sprio
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Via Granarolo 64, Faenza 48018, Italy.
| | - Massimiliano Dapporto
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Via Granarolo 64, Faenza 48018, Italy.
| | - Monica Montesi
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Via Granarolo 64, Faenza 48018, Italy.
| | - Silvia Panseri
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Via Granarolo 64, Faenza 48018, Italy.
| | - Wanda Lattanzi
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Largo F Vito, 1, Rome 00168, Italy.
- Latium Musculoskeletal Tissue Bank, Largo F Vito, 1, Rome 00168, Italy.
| | - Enrico Pola
- Orthopaedics and Traumatology, Università Cattolica del Sacro Cuore, Largo F Vito, 1, Rome 00168, Italy.
| | - Giandomenico Logroscino
- Orthopaedics and Traumatology, Università Cattolica del Sacro Cuore, Largo F Vito, 1, Rome 00168, Italy.
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Via Granarolo 64, Faenza 48018, Italy.
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Spontaneous fractures in custom-made porous hydroxyapatite cranioplasty implants: is fragility the only culprit? Acta Neurochir (Wien) 2015; 157:517-23. [PMID: 25588747 DOI: 10.1007/s00701-014-2319-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/17/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Although the porous hydroxyapatite (PHA) used in custom-made cranioplasty implants is a material appreciated for its biomimetic properties, before osteointegration it is initially very fragile. Nevertheless, we wondered whether this primary fragility is entirely due to brittleness or whether the surgeon's actions may influence the behavior of the material. METHODS To study the influence of the surgeon's behavior, we made a virtual model of a custom-made PHA cranioplasty implant and submitted it to three implant procedural variables using finite element methods. In the first test, a scenario in which the surgeon's design, validation, and positioning techniques are impeccable, the edges of the implant adhered well to the craniectomy margins. In the second test, a discrepancy between a portion of the perimeter of the craniectomy and the profile of the prosthesis was modeled, and in the third test, several gaps were simulated between the implant and the craniectomy margins. RESULTS Our mathematical model showed that when local and general discontinuities were included in the test scenarios, there was an increase in the load coming to bear on the cranioplasty implant, which amounted to 80 and 50 %, respectively. CONCLUSIONS The fragility of custom-made PHA cranioplasty implants increases if the surgeon fails to achieve a precise design and validation, and/or an accurate surgical procedure. Nevertheless, careful attention during these phases helps to maintain the strength of the implant, given the more favorable mechanical conditions, without interfering with its biomimetic capacity.
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