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Messo, Elias
Publications (10 of 10) Show all publications
Khonsari, R. H., Friess, M., Nysjö, J., Odri, G., Malmberg, F., Nyström, I., . . . Olszewski, R. (2013). Shape and volume of craniofacial cavities in intentional skull deformations. American Journal of Physical Anthropology, 151(1), 110-119
Open this publication in new window or tab >>Shape and volume of craniofacial cavities in intentional skull deformations
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2013 (English)In: American Journal of Physical Anthropology, ISSN 0002-9483, E-ISSN 1096-8644, Vol. 151, no 1, p. 110-119Article in journal (Refereed) Published
Abstract [en]

Intentional cranial deformations (ICD) have been observed worldwide but are especially prevalent in preColombian cultures. The purpose of this study was to assess the consequences of ICD on three cranial cavities (intracranial cavity, orbits, and maxillary sinuses) and on cranial vault thickness, in order to screen for morphological changes due to the external constraints exerted by the deformation device. We acquired CT-scans for 39 deformed and 19 control skulls. We studied the thickness of the skull vault using qualitative and quantitative methods. We computed the volumes of the orbits, of the maxillary sinuses, and of the intracranial cavity using haptic-aided semi-automatic segmentation. We finally defined 3D distances and angles within orbits and maxillary sinuses based on 27 anatomical landmarks and measured these features on the 58 skulls. Our results show specific bone thickness patterns in some types of ICD, with localized thinning in regions subjected to increased pressure and thickening in other regions. Our findings confirm that volumes of the cranial cavities are not affected by ICDs but that the shapes of the orbits and of the maxillary sinuses are modified in circumferential deformations. We conclude that ICDs can modify the shape of the cranial cavities and the thickness of their walls but conserve their volumes. These results provide new insights into the morphological effects associated with ICDs and call for similar investigations in subjects with deformational plagiocephalies and craniosynostoses.

National Category
Surgery Medical Image Processing
Identifiers
urn:nbn:se:uu:diva-198978 (URN)10.1002/ajpa.22263 (DOI)000318040200011 ()23553676 (PubMedID)
Available from: 2013-04-30 Created: 2013-04-30 Last updated: 2017-12-06Bibliographically approved
Saiepour, D., Messo, E., Hedlund, A. J. O. & Nowinski, D. J. (2012). Radiologic and Long-Term Clinical Outcome From Treatment of Isolated Medial Orbital Wall Blowout Fractures. The Journal of craniofacial surgery (Print), 23(5), 1252-1255
Open this publication in new window or tab >>Radiologic and Long-Term Clinical Outcome From Treatment of Isolated Medial Orbital Wall Blowout Fractures
2012 (English)In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 23, no 5, p. 1252-1255Article in journal (Refereed) Published
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.

Keywords
Orbit, facial fracture
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-185649 (URN)10.1097/SCS.0b013e31825e4e8e (DOI)000309547200064 ()
Available from: 2012-11-27 Created: 2012-11-27 Last updated: 2017-12-07Bibliographically approved
Nowinski, D., Messo, E., Hedlund, A. & Hirsch, J.-M. (2011). Computer-navigated contouring of craniofacial fibrous dysplasia involving the orbit. The Journal of craniofacial surgery (Print), 22(2), 469-472
Open this publication in new window or tab >>Computer-navigated contouring of craniofacial fibrous dysplasia involving the orbit
2011 (English)In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 22, no 2, p. 469-472Article in journal (Refereed) Published
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.

Keywords
Computer-assisted surgery, orbit, virtual planning
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-151519 (URN)10.1097/SCS.0b013e3182074312 (DOI)000288535800022 ()21403578 (PubMedID)
Available from: 2011-04-13 Created: 2011-04-13 Last updated: 2017-12-11Bibliographically approved
Nowinski, D., Saiepour, D., Leikola, J., Messo, E., Nilsson, P. & Enblad, P. (2011). Posterior cranial vault expansion performed with rapid distraction and time-reduced consolidation in infants with syndromic craniosynostosis. Child's nervous system (Print), 27(11), 1999-2003
Open this publication in new window or tab >>Posterior cranial vault expansion performed with rapid distraction and time-reduced consolidation in infants with syndromic craniosynostosis
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2011 (English)In: Child's nervous system (Print), ISSN 0256-7040, E-ISSN 1433-0350, Vol. 27, no 11, p. 1999-2003Article in journal (Refereed) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-166090 (URN)10.1007/s00381-011-1563-1 (DOI)000297163800025 ()
Available from: 2012-01-11 Created: 2012-01-10 Last updated: 2017-12-08Bibliographically approved
Ramadhan, A., Messo, E. & Hirsch, J.-M. (2010). Anatomical Variation of Mental Foramen: A case report. Stomatologija, Baltic Dental and Maxillofacial Journal, 12(3), 93-96
Open this publication in new window or tab >>Anatomical Variation of Mental Foramen: A case report
2010 (English)In: Stomatologija, Baltic Dental and Maxillofacial Journal, ISSN 1392-8589, E-ISSN 1822-301X, Vol. 12, no 3, p. 93-96Article in journal (Refereed) Published
Abstract [en]

We have reported a case of triple mental foramina at the right side of the premolar region, which was discovered during reposition and ostheosynthesis of a mandible fracture. A review of the literature, was performed which disclosed no previous clinical cases reported but an incidence of 1.2% of triple foramina after investigating dry skulls or radiographics. The discussion stresses the importance of adequate preoperative radiological examination in the clinical situation especially when closed surgery is planned.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-139445 (URN)21063139 (PubMedID)
Available from: 2010-12-27 Created: 2010-12-27 Last updated: 2017-12-11Bibliographically approved
Nowinski, D., Messo, E. & Hedlund, A. (2010). Treatment of Orbital Fractures: Evaluation of Surgical Techniques and Materials for Reconstruction. The Journal of craniofacial surgery (Print), 21(4), 1033-1037
Open this publication in new window or tab >>Treatment of Orbital Fractures: Evaluation of Surgical Techniques and Materials for Reconstruction
2010 (English)In: The Journal of craniofacial surgery (Print), ISSN 1049-2275, E-ISSN 1536-3732, Vol. 21, no 4, p. 1033-1037Article in journal (Refereed) Published
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.

Keywords
Orbit, Medpor, craniofacial trauma
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-135952 (URN)10.1097/SCS.0b013e3181e4345d (DOI)000280149100021 ()
Available from: 2010-12-09 Created: 2010-12-09 Last updated: 2017-12-11Bibliographically approved
Leiggener, C., Messo, E., Thor, A., Zeilhofer, H.-F. & Hirsch, J.-M. (2009). A selective laser sintering guide for transferring a virtual plan to real time surgery in composite mandibular reconstruction with free fibula osseous flaps. International Journal of Oral and Maxillofacial Surgery, 38(2), 187-192
Open this publication in new window or tab >>A selective laser sintering guide for transferring a virtual plan to real time surgery in composite mandibular reconstruction with free fibula osseous flaps
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2009 (English)In: International Journal of Oral and Maxillofacial Surgery, ISSN 0901-5027, E-ISSN 1399-0020, Vol. 38, no 2, p. 187-192Article in journal (Refereed) Published
Abstract [en]

The free fibular flap is the standard procedure for reconstructing mandibular defects. The graft has to be contoured to fit the defect so preoperative planning is required. The systems used previously do not allow transfer of the surgical plan to the operation room in an optimal way. The authors present a method to bring the virtual plan to real time surgery using a rapid prototyping guide. Planning was conducted using the Surgicase CMF software simulating surgery on a workstation. The osteotomies were translated into a rapid prototyping guide, sterilised and applied during surgery on the fibula allowing for the osteotomies and osteosynthesis to be performed with intact circulation. During reconstruction the authors were able to choose the best site for the osteotomies regarding circulation and as a result increased the precision and speed of treatment.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-110335 (URN)10.1016/j.ijom.2008.11.026 (DOI)000264020900012 ()19179046 (PubMedID)
Available from: 2009-11-11 Created: 2009-11-11 Last updated: 2017-12-12Bibliographically approved
Farzad, P., Messo, E. & Hirsch, J.-M. (2009). Högteknologi revolutionerar kraniomaxillofacial kirurgi: Datornavigation ger bättre precision och färre komplikationer. Läkartidningen, 106(38), 2362-2365
Open this publication in new window or tab >>Högteknologi revolutionerar kraniomaxillofacial kirurgi: Datornavigation ger bättre precision och färre komplikationer
2009 (Swedish)In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 106, no 38, p. 2362-2365Article in journal (Refereed) Published
Abstract [sv]

Inom kraniofacial kirurgi pågår en högteknologisk utveckling. Datorstödd och datornavigerad kirurgi är områden som i dag utvecklas snabbt. Nyttan med dessa teknologier är framför allt förbättrad precision och förutsägbarhet med minskad risk för komplikationer och totalt mindre morbiditet. Virtuell planering av rekonstruktioner kan nu göras i och med att datortomografin utvecklats från analog till digital teknik. En ideal simulering av det tilltänkta ingreppet görs sedan på en datorarbetsstation. Osteotomier, förflyttningar av bensegment eller inpassning av biomaterial kan simuleras oändligt antal gånger. Med hjälp av individuellt producerade guider i stereolitografi eller med en navigator överförs den virtuella planen till operationssituationen.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-113984 (URN)19848342 (PubMedID)
Available from: 2010-02-08 Created: 2010-02-08 Last updated: 2017-12-12Bibliographically approved
Nowinski, D., Messo, E. & Hedlund, A. (2009). Nya implantat möjliggör rekonstruktion av orbita med hög precision. Läkartidningen, 106(6), 354-7
Open this publication in new window or tab >>Nya implantat möjliggör rekonstruktion av orbita med hög precision
2009 (Swedish)In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 106, no 6, p. 354-7Article in journal (Refereed) Published
Abstract [sv]

Felaktig behandling av orbitafrakturer kan ge svåra resttillstånd med påverkan på ögats funktion och utseende. Korrekt anatomisk rekonstruktion av orbitans väggar kräver ofta stor vana vid orbitakirurgi. Nya anatomiska standardimplantat ger förutsättningar för rekonstruktioner med hög precision, men placering av dessa implantat kräver extensiv friläggning av ögonhålan.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-114235 (URN)19297811 (PubMedID)
Available from: 2010-02-12 Created: 2010-02-12 Last updated: 2017-12-12Bibliographically approved
Hirsch, J., Thor, A., Leiggener, C., Messo, E., Acosta, R., Krol, Z. & Buitrage-Tellez, C. (2009). Reconstruction of the temperomandibular joint with free fibula microvascular flaps without and with surgical guides. International Journal of Computer Assisted Radiology and Surgery, 4(Suppl 1), S226-S227
Open this publication in new window or tab >>Reconstruction of the temperomandibular joint with free fibula microvascular flaps without and with surgical guides
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2009 (English)In: International Journal of Computer Assisted Radiology and Surgery, ISSN 1861-6410, E-ISSN 1861-6429, Vol. 4, no Suppl 1, p. S226-S227Article in journal, Meeting abstract (Refereed) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-114236 (URN)10.1007/s11548-009-0339-5 (DOI)
Note

From the issue entitled "CARS 2009 - Proceedings of the 23rd International Congress and Exhibition, Berlin, Germany, June 23 - 27, 2009"

Available from: 2010-02-12 Created: 2010-02-12 Last updated: 2017-12-12Bibliographically approved
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