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  • 1.
    Kharazmi, Mohammad
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Carlsson, Anders-Petter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Hallberg, Pär
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical pharmacogenomics and osteoporosis.
    Mandibular Bone Exposure and Osteonecrosis in a Patient With an Uncomplicated Medical History2015In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 26, no 5, p. 1719-1720Article in journal (Refereed)
  • 2.
    Kharazmi, Mohammad
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Hallberg, Pär
    Warfvinge, Gunnar
    Bisphosphonate-associated osteonecrosis of the external auditory canal.2013In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 24, no 6, p. 2218-20Article in journal (Refereed)
  • 3. Kharazmi, Mohammad
    et al.
    Hallberg, Pär
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical pharmacogenomics and osteoporosis.
    Warfvinge, Gunnar
    Bisphosphonate-Associated Osteonecrosis of the External Auditory Canal2013In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 24, no 6, p. 2218-2220Article in journal (Refereed)
  • 4.
    Nowinski, Daniel
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Di Rocco, Frederico
    Roujeau, Thomas
    Meyer, Philippe
    Renier, Dominique
    Arnaud, Eric
    Complex Pediatric Orbital Fractures Combined With Traumatic Brain Injury: Treatment and Follow-Up2010In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 21, no 4, p. 1054-1059Article in journal (Refereed)
    Abstract [en]

    The treatment of orbital fractures aims at the restoration of orbital anatomy and prevention of posttraumatic sequels. The treatment of facial fractures in patients with traumatic brain injury may necessitate a postponement of fracture surgery to allow for brain recovery. However, such delay of reconstruction in complex orbital fractures may lead to inferior results. Fourteen pediatric patients with complex orbital fractures were retrospectively reviewed. Eleven patients (79%) had brain injury, with a mean Glasgow Coma Scale score of 8.6 at initial evaluation. Fracture patterns were highly complex with many bilateral and multiple orbital wall fractures. Six patients (43%) had injuries to the medial canthal tendon, as part of a naso-orbito-ethmoid fracture. Mean follow-up time was 4.7 years (range, 1.2-13.1 years). Eleven patients (79%) had reconstructive surgery early (within 3 weeks), and 3 (29%) patients had the surgery postponed. Four patients had secondary surgeries for enophthalmos and medial canthal dislocation. Eighty-two percent of patients with brain injury had a good overall neurologic outcome (Glasgow Outcome Scale score of 1 or 2). Sixty-seven percent of patients had a good aesthetic outcome without any need for revisional surgery. Medial canthal injury and late surgery both correlated with an inferior aesthetic result. In conclusion, good results with respect to mental outcome and aesthetics can be achieved in highly complex orbital fractures combined with brain injury. Delayed surgery and medial canthal tendon injury predispose for posttraumatic sequels and secondary surgery.

  • 5.
    Nowinski, Daniel
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Messo, Elias
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Hedlund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Treatment of Orbital Fractures: Evaluation of Surgical Techniques and Materials for Reconstruction2010In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 21, no 4, p. 1033-1037Article in journal (Refereed)
    Abstract [en]

    Reconstruction of the fractured orbit serves to prevent functional and aesthetic posttraumatic sequels. In 2004, the surgical protocol at our unit was modified with respect to techniques for surgical access, types, and materials for reconstruction. The modifications were as follows: (a) introduction of medial orbital wall reconstructions through a bicoronal approach, (b) transconjunctival approach instead of the subciliary approach, and (c) porous polyethylene or porous polyethylene-titanium instead of autologous bone grafts. To evaluate the different surgical techniques and materials used, orbital reconstructions performed at our unit from 2000 to 2007 were retrospectively studied. In total, 177 primary or first-time secondary reconstructions were performed in 176 patients. The overall rate of early complications requiring medical or surgical intervention was 6.4%, and the reoperation rate was 3.4%. There were no statistically significant differences in the frequency of cicatricial eyelid complications between the subciliary and the transconjunctival approaches. There was a reduction in operative time with the use of implants compared with the use of bone. The overall rate of infections was 2%; however, there were no infections in the group treated with implants. Seven patients had secondary surgery for persistent enophthalmos, 4 of them due to defects in the medial orbital wall that had not been corrected at the time of primary reconstruction of the orbital floor. In conclusion, porous polyethylene/porous polyethylene-titanium is a safe material for orbital reconstructions. Reconstruction of the medial orbital wall is important to prevent posttraumatic enophthalmos, particularly in combined medial wall-orbital floor fractures.

  • 6.
    Nowinski, Daniel
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Messo, Elias
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Hedlund, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Hirsch, Jan-Michael
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Computer-navigated contouring of craniofacial fibrous dysplasia involving the orbit2011In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 22, no 2, p. 469-472Article in journal (Refereed)
    Abstract [en]

    Virtual surgical planning and computer-aided surgery were used to treat a mono-ostotic fibrous dysplasia of the right zygoma. Mirroring of the contralateral zygoma sets the target for the contouring of the affected zygomatic bone. An optical system for computer-guided surgery was used. Instruments were calibrated and visualized in real time on screen. Achievement of the virtually set target for the orbitozygomatic anatomy was assessed during surgery. Postoperative computed tomography and clinical follow-up confirmed an excellent result with regard to facial symmetry and eye bulb position. The volume of the orbit was increased from 24.2 to 26.0 mL compared with a contralateral orbital volume of 25.7 mL. Computer-guided surgery may be a useful tool in the surgical reduction of craniofacial fibrous dysplasia.

  • 7.
    Saiepour, Daniel
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Messo, Elias
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Hedlund, Anders J. O.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Nowinski, Daniel J.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Radiologic and Long-Term Clinical Outcome From Treatment of Isolated Medial Orbital Wall Blowout Fractures2012In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 23, no 5, p. 1252-1255Article in journal (Refereed)
    Abstract [en]

    Blowout fractures in the medial orbital wall may lead to enophthalmos, ocular dysmotility, and diplopia. Ten consecutive patients with unilateral, isolated fractures of the medial orbital wall were retrospectively studied. The radiologic accuracy of the medial orbital wall reconstructions and the long-term clinical outcomes were assessed. All cases were treated through a bicoronal approach and by use of porous polyethylene-titanium implants. The total fracture area and the orbital volume increase from the blowout were measured on computed tomographic scans. Next, we evaluated the reconstruction in the posterior part of the medial wall. This was done by calculating the ratio between the defect area and the implant area located behind the anterior ethmoidal canal. The patients were examined at least 1 year after the operation, and the rates of enophthalmos and diplopia were evaluated. The mean fracture defect area was 2.45 cm(2) (range, 0.41-4.16 cm(2)), and the mean volume increase from the blowout fractures was 1.82 cm(3) (range, 0.53-2.76 cm(3)). The orbital volume was accurately restored in all patients. However, the ratio of implant to defect area behind the anterior ethmoidal canal ranged from 0% to 100% (mean, 47.3%). None of the patients had enophthalmos or diplopia at the long-term follow-up. The results confirm that restoration of orbital volume is important to prevent postoperative enophthalmos in isolated medial orbital blowout fractures. Complete reconstruction of the most posterior part of the medial orbital wall seems to be of lesser importance.

  • 8. Skogh, Ann-Charlott Docherty
    et al.
    Kihlstrom, Lars
    Neovius, Erik
    Persson, Cecilia
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
    Beckman, Mats O.
    Engstrand, Thomas
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Polymer Chemistry.
    Variation in Calvarial Bone Healing Capacity: A Clinical Study on the Effects of BMP-2-Hydrogel or Bone Autograft Treatments at Different Cranial Locations2013In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 24, no 2, p. 339-343Article in journal (Refereed)
    Abstract [en]

    Background: Bone morphogenetic protein-2 (BMP-2) together with a suitable carrier is an attractive option that may be used for craniofacial bone reconstruction. In this prospective randomized study, a hyaluronan-based hydrogel with BMP-2 was used to achieve bone healing in standardized critical-size cranial defects in humans after neurosurgery. Methods: Twelve patients were randomized into the treatment group (N = 6) or control group (N = 6). In the treatment group, holes made during craniotomy were treated with hydrogel with BMP-2, 250 mu g/mL, or hydrogel without BMP-2. In the remaining hole/s in the same patient, Spongostan (Ethicon) alone or Tisseel (Baxter) mixed with autologous bone matrix were used as negative and positive controls, respectively. In the control group, the holes were treated with Spongostan or Tisseel mixed with bone autograft. Bone healing was assessed with CT scans after 3 and 6 months. Bone areas in treated defects were measured and statistical analysis was performed. Results: Independent of location, bone healing in defects treated with Tisseel with autograft, hydrogel alone, or hydrogel with BMP-2 was significantly increased compared to negative control (P < 0.001, P = 0.002, and P = 0.005, respectively). In general, all defects healed significantly better in the frontal bone as compared to parietal-temporal location, except for defects treated with Tisseel and autograft, which healed well independently of location. No local or systemic side effects, including excessive bone overgrowth or inflammatory reaction, were seen in treated patients. Conclusions: Tissue engineering of bone with hyaluronan-based hydrogel shows good healing of cranial defects, comparable with bone autografts. The hydrogel itself may represent a novel alternative to autologous bone transplants in craniofacial bone repair. The study also reveals a general superior healing capacity in the frontal bone as compared to parietal/temporal bones.

  • 9. Smektala, Tomasz
    et al.
    Nysjö, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Visual Information and Interaction. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis and Human-Computer Interaction.
    Thor, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Homik, Aleksandra
    Sporniak-Tutak, Katarzyna
    Safranow, Krzysztof
    Dowgierd, Krzysztof
    Olszewski, Raphael
    Three-Dimensional Eyeball and Orbit Volume Modification After LeFort III Midface Distraction2015In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 26, no 5, p. 1652-1655Article in journal (Refereed)
    Abstract [en]

    The aim of our study was to evaluate orbital volume modification with LeFort III midface distraction in patients with craniosynostosis and its influence on eyeball volume and axial diameter modification. Orbital volume was assessed by the semiautomatic segmentation method based on deformable surface models and on 3-dimensional (3D) interaction with haptics. The eyeball volumes and diameters were automatically calculated after manual segmentation of computed tomographic scans with 3D slicer software. The mean, minimal, and maximal differences as well as the standard deviation and intraclass correlation coefficient (ICC) for intraobserver and interobserver measurements reliability were calculated. The Wilcoxon signed rank test was used to compare measured values before and after surgery. P < 0.05 was considered statistically significant. Intraobserver and interobserver ICC for haptic-aided semiautomatic orbital volume measurements were 0.98 and 0.99, respectively. The intraobserver and interobserver ICC values for manual segmentation of the eyeball volume were 0.87 and 0.86, respectively. The orbital volume increased significantly after surgery: 30.32% (mean, 5.96  mL) for the left orbit and 31.04% (mean, 6.31  mL) for the right orbit. The mean increase in eyeball volume was 12.3%. The mean increases in the eyeball axial dimensions were 7.3%, 9.3%, and 4.4% for the X-, Y-, and Z-axes, respectively. The Wilcoxon signed rank test showed that preoperative and postoperative eyeball volumes, as well as the diameters along the X- and Y-axes, were statistically significant. Midface distraction in patients with syndromic craniostenosis results in a significant increase (P < 0.05) in the orbit and eyeball volumes. The 2 methods (haptic-aided semiautomatic segmentation and manual 3D slicer segmentation) are reproducible techniques for orbit and eyeball volume measurements.

  • 10.
    Svee, Andreas
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Frykholm, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
    Linder, Arne
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Otolaryngology and Head and Neck Surgery.
    Hakelius, Malin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Skoog, Valdemar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Nowinski, Daniel
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Early Release of Interalveolar Synechiae Under General Anesthesia Through Fiberscopic Nasal Intubation2012In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 23, no 4, p. E299-E302Article in journal (Refereed)
    Abstract [en]

    This article presents a treatment strategy for early release of interalveolar synechiae, aiming to facilitate early oral feeding and prevent temporomandibular joint ankylosis. The treatment results of 2 patients with van der Woude syndrome were retrospectively studied. Both patients underwent early surgical release of interalveolar synechiae under general anesthesia through fiberscopic nasal intubation. The 2 patients were treated at the ages of 6 and 14 days, respectively. The interincisival distances increased from 5 and 6 mm preoperatively to 11 and 10 mm immediately after surgery. This was increased further to 25 and 20 mm at long-term follow-up (6 and 24 months). In conclusion, synechiae between the upper and lower jaws can be safely treated at a very early age under general anesthesia with fiberscopic nasotracheal intubation. The purpose of early intervention in these cases is to facilitate oral feeding and prevent temporomandibular joint ankylosis.

  • 11.
    Thor, Andreas
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Palmquist, Anders
    Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Biomat, SE-40530 Gothenburg, Sweden; BIOMATCELL VINN Excellence Ctr Biomat & Cell Ther, Gothenburg, Sweden.
    Hirsch, Jan-Michael
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
    Rännar, Lars-Erik
    Mid Sweden Univ, Dept Qual Technol Mech Engn & Math, Ostersund, Sweden.
    Dérand, Per
    SUS, Univ Lund Hosp, Dept Oral & Maxillofacial Surg, Lund, Sweden.
    Omar, Omar
    Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Biomat, SE-40530 Gothenburg, Sweden; BIOMATCELL VINN Excellence Ctr Biomat & Cell Ther, Gothenburg, Sweden.
    Clinical, Morphological, and Molecular Evaluations of Bone Regeneration With an Additive Manufactured Osteosynthesis Plate2016In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 27, no 7, p. 1899-1904Article in journal (Refereed)
    Abstract [en]

    There is limited information on the biological status of bone regenerated with microvascular fibula flap combined with biomaterials. This paper describes the clinical, histological, ultrastructural, and molecular picture of bone regenerated with patient-customized plate, used for mandibular reconstruction in combination with microvascular osteomyocutaneous fibula flap. The plate was virtually planned and additively manufactured using electron beam melting. This plate was retrieved from the patient after 33 months. Microcomputed tomography, backscattered-scanning electron microscopy, histology, and quantitative-polymerase chain reaction were employed to evaluate the regenerated bone and the flap bone associated with the retrieved plate. At retrieval, the posterior two-thirds of the plate were in close adaptation with the underlying flap, whereas soft tissue was observed between the native mandible and the anterior one-third. The histological and structural analyses showed new bone regeneration, ingrowth, and osseointegration of the posterior two-thirds. The histological observations were supported by the gene expression analysis showing higher expression of bone formation and remodeling genes under the posterior two-thirds compared with the anterior one-third of the plate. The observation of osteocytes in the flap indicated its viability. The present data endorse the suitability of the customized, additively manufactured plate for the vascularized fibula mandibular reconstruction. Furthermore, the combination of the analytical techniques provides possibilities to deduce the structural and molecular characteristics of bone regenerated using this procedure.

1 - 11 of 11
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