Change in the Alignment and Distal Junctional Kyphosis Development after Posterior Cervical Spinal Fusion Surgery for Cervical Spondylotic Myelopathy – Risk Factor Analysis

Objective@#: This study analyzed the risk factors in patients who developed distal junctional kyphosis (DJK) after posterior cervical fusion. @*Methods@#: We retrospectively analyzed the clinical and radiographic outcomes of 64 patients, aged ≥18 years (51 and 13 male and female patients, respectively), who underwent single-staged multilevel (3–6 levels) posterior cervical fusion surgery due to multiple cervical spondylotic myelopathy. The surgeries were performed by a single spinal surgeon between January 2012 and December 2017. Demographic data, clinical outcomes, and radiological results were collected. We divided the patients into a DJK group and a non-DJK group according to the presence of DJK and investigated the risk factors by comparing the differences between the two groups. @*Results@#: Of the 64 patients, 13 developed DJK. No significant differences in clinical results were observed between the two groups before and immediately after the surgery. At the final follow-up, a higher visual analog score for neck pain was observed in the DJK group compared to the non-DJK group (p<0.01). The DJK group had a significantly lower T1 slope and a significantly higher C2-7 sagittal vertical axis (SVA) before surgery compared to the non-DJK group (p=0.03 and p<0.01, respectively). Immediately after surgery, the difference between the two groups decreased and no significant difference was observed. However, at the last followup, a significantly higher C2-7 SVA was observed in the DJK group (p<0.01). At the last follow up, there is no discrepancy in T1S-CL. In multiple logistic regression analysis, preoperative higher C2-7 SVA and preoperative lower T1 slope were identified as independent risk factors (p=0.03 and p<0.01, respectively). As a result, it was confirmed that DJK occurred along the process of returning to preoperative values. @*Conclusion@#: DJK can be considered to be caused by cervical misalignment due to excessive change in the surgical site in patients with low T1 slope and high C2-7 SVA before surgery. This also affects the clinical outcome after surgery. It is recommended to refrain from excessive segmental lordosis changes during multilevel cervical post fusion surgery, especially in patients with a small preoperative T1 slope and a large SVA value.

Posterior Floating Laminotomy as a New Decompression Technique for Posterior Cervical Spinal Fusion Surgery

Objective@#: In the cervical spine, many surgical procedures have been developed to achieve optimal results for various disorders, including degenerative diseases, traumatic injury, and tumor. In this study, we report our experience and follow-up results with a new surgical technique for cervical spine entitled posterior floating laminotomy (PFL) in comparison with conventional laminectomy and fusion (LF). @*Methods@#: Data for 85 patients who underwent conventional LF (n=66) or PFL (n=19) for cervical spine disorders between 2012 and 2019 were analyzed. Radiological parameters, including cervical lordosis (CL), T1 slope (T1S), segmental lordosis (SL), and C2–7 sagittal vertical axis (SVA), were measured with lateral spine X-rays. Functional outcomes, comprising the modified Japanese Orthopaedic Association (mJOA), neck disability index (NDI), and visual analog scale (VAS) scores, were also measured. For the patients who underwent PFL, postoperative magnetic resonance image (MRI) was performed in a month after the surgery, and the degree of decompression was evaluated at the T2-weighted axial image, and postoperative computed tomography (CT) was conducted immediately and 1 year after the operation to evaluate the gutter fusion. @*Results@#: There was no difference in CL, T1S, SL, and C2–7 SVA between the groups but there was a difference in the preoperative and postoperative SL angles. The mean difference in the preoperative SL angle compared with that at the last follow-up was -0.3° after conventional LF and 4.7° after PFL (p=0.04), respectively. mJOA, NDI, and VAS scores showed significant improvements (p<0.05) during follow-up in both groups. In the PFL group, postoperative MRI showed sufficient decompression and postoperative CT revealed gutter fusion at 1 year after the operation. @*Conclusion@#: PFL is a safe surgical method which can preserve postoperative CL and achieve good clinical outcomes.

Posterior Thoracic Cage Interbody Fusion Offers Solid Bone Fusion with Sagittal Alignment Preservation for Decompression and Fusion Surgery in Lower Thoracic and Thoracolumbar Spine

Objective@#: It is challenging to make solid fusion by posterior screw fixation and laminectomy with posterolateral fusion (PLF) in thoracic and thoracolumbar (TL) diseases. In this study, we report our experience and follow-up results with a new surgical technique entitled posterior thoracic cage interbody fusion (PTCIF) for thoracic and TL spine in comparison with conventional PLF. @*Methods@#: After institutional review board approval, a total of 57 patients who underwent PTCIF (n=30) and conventional PLF (n=27) for decompression and fusion in thoracic and TL spine between 2004 and 2019 were analyzed. Clinical outcomes and radiological parameters, including bone fusion, regional Cobb angle, and proximal junctional Cobb angle, were evaluated. @*Results@#: In PTCIF and conventional PLF, the mean age was 61.2 and 58.2 years (p=0.46), and the numbers of levels fused were 2.8 and 3.1 (p=0.46), respectively. Every patient showed functional improvement except one case of PTCIF. Postoperative hematoma as a perioperative complication occurred in one and three cases, respectively. The mean difference in the regional Cobb angle immediately after surgery compared with that of the last follow-up was 1.4° in PTCIF and 7.6° in conventional PLF (p=0.003), respectively. The mean durations of postoperative follow-up were 35.6 months in PTCIF and 37.3 months in conventional PLF (p=0.86). @*Conclusion@#: PTCIF is an effective fusion method in decompression and fixation surgery with good clinical outcomes for various spinal diseases in the thoracic and TL spine. It provides more stable bone fusion than conventional PLF by anterior column support.

Clinical Outcomes of Gamma Knife Radiosurgery for Metastatic Brain Tumors from Gynecologic Cancer : Prognostic Factors in Local Treatment Failure and Survival

OBJECTIVE: Brain metastases in gynecologic cancer (ovarian, endometrial, and cervical cancer) patients are rare, and the efficacy of Gamma Knife Radiosurgery (GKRS) to treat these had not been evaluated. We assessed the efficacy of GKRS and prognostic factors for tumor control and survival in brain metastasis from gynecologic cancers. METHODS: This retrospective study was approved by the institutional review board. From May 1995 to October 2012, 26 women (mean age 51.3 years, range 27-70 years) with metastatic brain tumors from gynecologic cancer were treated with GKRS. We reviewed their outcomes, radiological responses, and clinical status. RESULTS: In total 24 patients (59 lesions) were available for follow-up imaging. The median follow-up time was 9 months. The mean treated tumor volume at the time of GKRS was 8185 mm³ (range 10-19500 mm³), and the median dose delivered to the tumor margin was 25 Gy (range, 10-30 Gy). A local tumor control rate was 89.8% (53 of 59 tumors). The median overall survival was 9.5 months after GKRS (range, 1-102 months). Age-associated multivariate analysis indicated that the Karnofsky performance status (KPS), the recursive partitioning analysis (RPA) classification, and the number of treated lesions were significant prognostic factors for overall survival (HR=0.162, p=0.008, HR=0.107, p=0.038, and HR=2.897, p=0.045, respectively). CONCLUSION: GKRS is safe and effective for the management of brain metastasis from gynecologic cancers. The clinical status of the patient is important in determining the overall survival time.

Resuscitative Endovascular Balloon Occlusion of the Aorta in a Trauma Patient with Hypovolemic Shock / 대한구급학회지

Hemorrhagic shock is one of the most common causes of death in patients with multiple trauma and therefore rapid control of bleeding is the main strategy to save these patients. Resuscitative balloon occlusion of the aorta (REBOA) has been applied in several trauma cases and because of the effectiveness of this procedure it has been adopted in the trauma field. Herein, we report the first successful case of REBOA in Korea performed on a 46-year-old man with hemorrhagic shock after a fall from a height of 14-stories. The patient visited our hospital emergency room with hypovolemic shock, we performed Resuscitative Endovascular Balloon Occlusion of the Aorta under bed side blind technique. His vital sign was stabilized after procedure, then we could performed endovascular bleeding control. The patient was discharged on his 33rd in-hospital day without invasive procedure and major scar.

Laparoscopic resection of hilar cholangiocarcinoma

Laparoscopic resection of hilar cholangiocarcinoma is technically challenging because it involves complicated laparoscopic procedures that include laparoscopic hepatoduodenal lymphadenectomy, hemihepatectomy with caudate lobectomy, and hepaticojejunostomy. There are currently very few reports describing this type of surgery. Between August 2014 and December 2014, 5 patients underwent total laparoscopic or laparoscopic-assisted surgery for hilar cholangiocarcinoma. Two patients with type I or II hilar cholangiocarcinoma underwent radical hilar resection. Three patients with type IIIa or IIIb cholangiocarcinoma underwent extended hemihepatectomy together with caudate lobectomy. The median (range) age, operation time, blood loss, and length of hospital stay were 63 years (43-76 years), 610 minutes (410-665 minutes), 650 mL (450-1,300 mL), and 12 days (9-21 days), respectively. Four patients had a negative margin, but 1 patient was diagnosed with high-grade dysplasia on the proximal resection margin. The median tumor size was 3.0 cm. One patient experienced postoperative biliary leakage, which resolved spontaneously. Laparoscopic resection is a feasible surgical approach in selected patients with hilar cholangiocarcinoma.

Resuscitative Endovascular Balloon Occlusion of the Aorta in a Trauma Patient with Hypovolemic Shock / 대한중환자의학회지

Hemorrhagic shock is one of the most common causes of death in patients with multiple trauma and therefore rapid control of bleeding is the main strategy to save these patients. Resuscitative balloon occlusion of the aorta (REBOA) has been applied in several trauma cases and because of the effectiveness of this procedure it has been adopted in the trauma field. Herein, we report the first successful case of REBOA in Korea performed on a 46-year-old man with hemorrhagic shock after a fall from a height of 14-stories. The patient visited our hospital emergency room with hypovolemic shock, we performed Resuscitative Endovascular Balloon Occlusion of the Aorta under bed side blind technique. His vital sign was stabilized after procedure, then we could performed endovascular bleeding control. The patient was discharged on his 33rd in-hospital day without invasive procedure and major scar.

Hybrid Repair of Suprarenal Abdominal Aortic Aneurysm: Antegrade Debranching with Endovascular Aneurysm Repair

We report a hybrid repair approach to the treatment of abdominal aortic aneurysm in patients with complex anatomies when typical endovascular aneurysm repair is limited due to juxtarenal involvement. A 63-year-old man presented with a 3-day history of fever and abdominal pain. He was diagnosed with acute cholecystitis along with incidental findings of two separate aneurysms of the abdominal aorta: a 3.7 cm saccular aneurysm at the suprarenal level, and a 6.6 cm fusiform aneurysm above the iliac bifurcation. He was treated with a hybrid technique involving an open approach for antegrade debranching of the superior mesenteric artery, and renal arteries and endovascular stent placement for treatment of an abdominal aortic aneurysm. The procedure was successfully completed with no adverse events as of the most recent 6-month outpatient follow-up.

In Situ Aortic Reconstruction with Femoral Vein after Post-EVAR Infection

A 78-year-old male presented with early gastric cancer and a 5.5 cm-sized infrarenal abdominal aortic aneurysm, detected during regular screening. Endovascular aneurysm repair (EVAR) was performed first, followed by laparoscopic distal gastrectomy. After gastrectomy, the patient underwent computed tomography (CT) scan due to persistent fever, which showed increased perigraft fluid collection around the right iliac limb graft. Echocardiography also revealed mitral valve vegetation, consistent with infective endocarditis. Despite intensive antibiotic treatment, the patient had persistent fever and showed fluid extension to the psoas muscle on CT scan. On the 49th post operative day (POD) after EVAR, stent graft explantation and aortic reconstruction with the left superficial femoral vein was performed. Ligation of the right iliac artery for infection control and simultaneous femoro-femoral bypass was also performed. The patient was discharged on the 46th POD after graft removal without any events.

Laparoscopic treatment of hepatic cysts located in the posterosuperior segments of the liver

PURPOSE: Laparoscopy is considered the treatment of choice for hepatic cysts, especially those located in anterolateral segments (AL; segments II, III, IVb, V, and VI) because of the ease of laparoscopic access. Here, we evaluated the feasibility and safety of laparoscopic treatment of hepatic cysts in posterosuperior segments (PS; segments I, IVa, VII, and VIII). METHODS: We retrospectively analyzed clinical data for 34 patients who underwent laparoscopic treatment of hepatic cysts between September 2004 and December 2012. Patients were divided into two groups depending on whether the main largest cyst was located in AL (n = 20) or PS (n = 14). Laparoscopic cyst unroofing was performed in 29 patients with symptomatic simple cysts. Laparoscopic resection was performed in 5 patients with suspected cystic neoplasms. RESULTS: There were no deaths or major complications. The mean operation time was 110 minutes and the mean hospital stay was 4.4 days. The mean cyst size was not significantly different (P = 0.511) but the frequency of multiple cysts was significantly greater in group PS (P = 0.003). The predominant type of resection was unroofing in both groups (P = 0.251). The mean blood loss (P = 0.747), mean hospital stay (P = 0.812), mean operation time (P = 0.669), morbidity rate (P = 0.488), and relapse rate (P = 0.448) were not significantly different. Relapse occurred in one patient who underwent reunroofing 17 months later. The median follow-up is 62 months. CONCLUSION: Laparoscopy is a safe procedure for hepatic cysts located in posterosuperior segments.

Implementation of a Critical Pathway for Patients with Acute Cholecystitis

PURPOSE: Since introduction of the laparoscopic procedure for cholecystectomy, it has become the treatment of choice for symptomatic gallbladder diseases. Previous studies have demonstrated that implementation of critical pathway (CP) in laparoscopic cholecystectomy (LC) is effective in reducing cost in terms of length of stay (LOS) and revisit rates. However, few studies have proven the effectiveness of critical pathway specifically in patients with acute cholecystitis (AC). METHODS: CP was introduced for LC for chronic cholecystitis (CC) in April 2008. Then, indication for CP was extended to AC in May 2010. We compared outcomes of LC for patients with AC between two eras, including Pre-CP (Jan 2007 to Mar 2008) and Post-CP (May 2010 to Jun 2011). Among 78 patients with AC, 70 patients (90%) were enrolled for the critical pathway. Among them, 55 patients (79%) were discharged with full application of CP; however, it was suspended in 15 patients (21%). RESULTS: No differences in demographics and clinical characteristics were observed between Pre-CP (n=97) and Post-CP (n=70) patients. The mean LOS before surgery was shorter in the Post-CP group (2.6 vs. 4.0 days, p=.012). In addition, the mean total LOS was shorter in the Post-CP group (5.5 vs. 8.7 days, p<.001). However no differences in postoperative complications were observed between the two groups (10 vs. 5 cases, p=.483). CONCLUSION: Implementation of CP in AC resulted in a decrease in the LOS in total and before surgery, without increasing morbidity. Therefore, critical pathway can be safely implemented for selected patients with AC.

Analysis of Frostbite (1)

PURPOSE: Frostbite can affect people involved in winter sports, homeless and soldiers. It results in tissue necrosis from direct cellular damage and indirect damage secondary to vasospasm and the progressive microvascular thrombosis following reperfusion of the ischemic limb. However, the frostbite is under-estimated by the physicians. We describe the assessment and management of frostbite and identify the challenges of managing these complex tissue injuries. METHODS: A retrospective analysis of 62 injuries (61 men, average age; 20.5 yo) was conducted between August 2009 to April 2011 in the burn center of AFCH. We sought to determine the demographic characteristics, identification of soft tissue injury, treatment and complications. RESULTS: The 62 were treated as outpatients (n=23, 37.1%) or inpatients (n=39, 62.9%). The superficial degree was 38 (61.3%), while 24 (38.7) have deep degree. The 47.4% of superficial and 87.5% of deep frostbite were admitted. The sites most prone to frostbite were feet (95.2%), followed by hands (27.4%). The toes had the more deep injuries. The 6 cases (9.7%) occurred in wet circumstances. They had suffered more deep injuries than dry circumstances (66.6% vs 35.8%). Thirteen (33.3%) of inpatients were transferred to center 14 days after exposure. The increased levels of isoenzymes did not present the degree of injuries. The bone scan was performed in 22 (56.4%) of inpatients at average 11.3 PFD. We believe it showed an excellent correlation with clinical course, though not confirmed statistically. The patient was treated with rapid rewarming (7; 11.3%), hydrotherapy (11; 17.7%), STSG (3; 12.5 of deep frostbite), berasil (14; 22.6%) and ibuprofen (5; 8.1%). The PGE1 was administered to 34 (87.2%) of inpatients for 8.8 days. We believe the effect of PGE1 to prevent amputations, though not confirmed in evidence base. The sequelae of 9 (23.1%) inpatients included of paresthesia (10.3%), LOM (10.3%), Raynaud's syndrome (7.7%) and hyperhydrois (2.6%). CONCLUSION: In a military context, health education of troops is necessary to avoid moisture circumstances and to protect from cold injuries. We need new guideline to recommend early rewarming and evacuation to specialized units so that the degree of frostbite can be alleviated and rate of complication can be lowered. We need new principles to use NSAIDs, pentoxifylline, antiprostaglandin agents and thrombolytic therapy in amelioration of tissue damage. Together with initial aids, use of radiological assessment, triple phase bone scanning, Duplex studies, Plethysmograpy and future advancements should allow for a more aggressive and active approach to the management of tissue viability. This information is only a primer and requires continuous updating to improve patient outcomes.