This study sought to both assist in the selection of flaps for ischial pressure wound reconstruction and evaluate the overall complication rates associated with reconstruction. A retrospective medical record review was conducted for 78 patients following the surgical reconstruction of an ischial pressure sore. Records were reviewed for demographics, location of sores, methods of reconstruction and flap selection, as well as any complications and recurrences. A total of 72 wounds were reconstructed with an average of 1.4 flaps used per wound. An ischial flap complication rate of 16% was observed in flap follow-up, with a recurrence rate of 7% recorded. The vast majority of complications went on to heal with 15% of patients requiring a second reconstruction. Our relatively large sample of ischial flaps allowed for a close comparison with previously published work. Both flap selection and site of reconstruction significantly affected the success rates for pressure sore coverage. The overall complication rates by flap and reconstructive site in this review are lower than previously published reports. Our experience with ischial reconstruction was extensive enough to suggest a posterior medial thigh fasciocutaneous flap combined with a biceps femoris muscle flap as a first choice in ischial pressure wound reconstruction.
Objective
To examine the effect of trauma velocity on the pattern of Le Fort I facial fractures.
Method
A retrospective medical record review was conducted on a consecutive cohort of craniofacial traumas surgically treated by a single surgeon between 2007 and 2011 (n=150). Of these cases, 39 Le Fort fractures were identified. Patient demographic information, method of trauma and velocity of impact were reviewed for these cases. Velocity of impact was expressed categorically as either ‘high’ or ‘low’: high-velocity fractures were those caused by a fall from >1 story or a motor vehicle collision; low-velocity fractures were the result of assaults with a blunt weapon, closed fist or falls from standing height. The vertical position of each fracture was measured at its point of entry on the lateral buttress and its point of exit on the piriform aperture. To allow for comparison across individuals, values were expressed as ratios based on their location on the face relative to these landmarks. A Wilcoxon rank-sum test was used to compare the fracture heights caused by high- and low-velocity trauma.
Results
The results revealed that high-velocity traumas to the face create Le Fort I fractures at a higher point in the lateral buttress compared with low-velocity traumas. There was no difference between heights at the piriform aperture.
Conclusion
High-velocity trauma resulted in higher Le Fort I fracture patterns compared with low-velocity trauma.
The accurate assessment of symmetry in the craniofacial skeleton is important for cosmetic and reconstructive craniofacial surgery. Although there have been several published attempts to develop an accurate system for determining the correct plane of symmetry, all are inaccurate and time consuming. Here, the authors applied a novel semi-automatic method for the calculation of craniofacial symmetry, based on principal component analysis and iterative corrective point computation, to a large sample of normal adult male facial computerized tomography scans obtained clinically (n = 32). The authors hypothesized that this method would generate planes of symmetry that would result in less error when one side of the face was compared to the other than a symmetry plane generated using a plane defined by cephalometric landmarks. When a three-dimensional model of one side of the face was reflected across the semi-automatic plane of symmetry there was less error than when reflected across the cephalometric plane. The semi-automatic plane was also more accurate when the locations of bilateral cephalometric landmarks (eg, frontozygomatic sutures) were compared across the face. The authors conclude that this method allows for accurate and fast measurements of craniofacial symmetry. This has important implications for studying the development of the facial skeleton, and clinical application for reconstruction.
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