The sphenopalatine ganglion is an extracranial neural structure within the pterygopalatine fossa. Modulation of this region via implantation of a neuromodulatory device presents a novel therapy for the treatment of facial and head pain. Yet sex, race, and genetic factors contribute to morphological variations between individuals. This study defines the standards and variations of the bony landmarks surrounding the pterygopalatine fossa. One hundred dry skulls were analyzed from the Hamann-Todd osteological collection. Ten anatomical dimensions were measured on each side of the face for each specimen (vidian foramen, zygomatic buttress, zygomatic maxillary suture, pyriform rim, infraorbital rim, pterygoid maxillary suture, greater palatine foramen, auditory canal, and pterygoid fossa). A statistical analysis was performed for both sides of the face based on sex and race. When stratified by sex, 7 of the 10 measurements revealed a statistically significant difference bilaterally. When stratified by race, 5 of the 10 measurements demonstrated a statistically significant difference bilaterally. Both male and African American skulls showed greater hemifacial values bilaterally when compared with their respective counterparts. The only statistically significant measurement on both the left and right sides of all skulls was the length from the vidian foramen to the infraorbital rim. Defining the anatomical mean distance between skull landmarks and highlighting differences between sex and race not only provides further insight into relative skull anatomy, but also sets the stage for device innovation.
Background: Autologous bone continues to represent the first choice for reconstruction of calvarial defects. However, unanswered questions remain on the natural history of the graft and the influence of patient-related risk factors. This study investigated the outcomes of skull reconstruction with split calvarial bone graft, examining the natural history and stratifying the risk of unfavorable results. Methods: Patients who underwent cranioplasty with split calvarial bone graft between 1982 and 2016 at the Cleveland Clinic were analyzed, recording demographics, comorbidities, indications, size and location of defect, and outcomes including complications and reoperations. Changes in graft thickness were analyzed using computed tomographic and magnetic resonance imaging scans. Results: Forty-one patients with an average age of 33.2 years, cranial defect size of 68 cm2, and mean follow-up of 28 months were included. The majority of patients (85 percent) had significant risk factors, with 43 percent suffering prior infection. Seventy-three percent of patients experienced successful restoration. A major complication was recorded in 26.8 percent; resorption occurred in 19.5 percent of patients (in 75 percent only at the recipient site), with 9.8 percent requiring reoperation. Patients with one or more risk factors or a smoking history were more likely to experience a complication. The mean ratio of the graft to the bicortical donor bone thickness was 0.48 ± 0.17 for the recipient site and 0.57 ± 0.10 for the donor site at an average radiographic follow-up of 11.9 ± 10.9 years. Conclusions: This study demonstrated a 73.2 percent first-attempt success rate in a high-risk population. The grafts maintain thickness over time, with no evidence of bone hypertrophy. Defect characteristics and patient systemic factors appear to be important variables influencing success. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.
Summary:Cerebrospinal fluid (CSF) drainage catheters have been associated with numerous complications in various anatomic locations, because of migration, infection, and obstruction. However, breast-related CSF shunt complications tend to occur infrequently or have seldom been reported in the empirical literature. Therefore, a case is presented detailing a breast pseudocyst caused by migration and subsequent coiling of a ventriculoperitoneal shunt in the right breast pocket. To the best of the authors’ knowledge, this is the first case that has been reported in the peer-reviewed literature of a pseudocyst resulting from a CSF drainage catheter coiling around the breast implant post pancreaticoduodenectomy. Moreover, this case highlights the importance of cross-disciplinary procedural awareness, particularly in regards to breast, ventriculoperitoneal shunt, and pancreatic procedures.
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