No Difference in Clinical Outcomes and Survivorship for Robotic, Navigational, and Conventional Primary Total Knee Arthroplasty with a Minimum Follow-up of 10 Years

Background@#Computer-assisted surgery, including robotic and navigational total knee arthroplasty (TKA), has been proposed as a technique used to improve alignment of implants. The purpose of this study was to compare the clinical and radiological outcomes during a minimum follow-up period of 10 years among robotic, navigational, and conventional TKA. @*Methods@#A total of 855 knees (robotic group, 194; conventional group, 270; and navigational group, 391) were available for physical and radiological examinations over a mean follow-up period of 10 years. The survival rate was analyzed using the KaplanMeier method based on the survival endpoint. The Hospital for Special Surgery score, Western Ontario and McMaster Universities Osteoarthritis Index, Knee Society Score, and range of motion were used for clinical evaluation. The hip-knee-ankle (HKA) axis angle, the coronal inclination of femoral and tibial components, and the presence of radiolucent lines were also assessed at the final follow-up. @*Results@#All clinical assessments at the final follow-up revealed improvements in the three groups without any significant difference among the groups (p> 0.05). The cumulative 10-year survival rate was 97.4% in the robotic group, 96.6% in the conventional group, and 98.2% in the navigational group, with no significant difference (p = 0.447). The rates of complication-associated surgery were not significantly different among the groups (p = 0.907). Only the proportion of outliers in the HKA axis angle showed a significant difference (p = 0.001), but other radiological outcomes were not significantly different among the three groups. @*Conclusions@#Our study demonstrated satisfactory survival rates for robotic, navigational, and conventional TKAs and similar clinical outcomes during the long-term follow-up. Larger studies with continuous serial data are needed to confirm these findings.

Diagnosis and treatment of hereditary angioedema: An expert opinion

Hereditary angioedema (HAE) is a rare disease, but it severely interrupts daily life activities and can sometimes be life-threatening. Therefore, early diagnosis and prompt treatment of HAE attacks are critical. Physicians should be aware of how to diagnose and manage HAE to prepare not to miss a diagnosis when treating HAE patients. Physicians must also carry out tests to confirm the diagnosis of HAEs caused by C1 inhibitor deficiency (type 1) or C1 inhibitor dysfunction (type 2) in patients with recurrent angioedema. In addition, recent studies revealed another type of HAE which is not related to C1 inhibitor (normal C1 inhibitor HAE). Once HAE is confirmed, patients and their caregivers should be given with short-term and long-term treatment plans to relieve or prevent HAE attacks. HAE requires life-long measures, including psychological support for patients and self-management education.

Management of hereditary angioedema in pediatric, pregnant, and breast-feeding patients: An expert opinion

Hereditary angioedema (HAE) is a rare inherited condition marked by recurrent skin and submucosal edema. HAE is caused by a C1 inhibitor deficiency or decreased C1 inhibitor function. The initial attack may occur during childhood or pregnancy, with symptoms ranging from classic angioedema to nonspecific stomach cramps. In this review, we discuss strategies for children and pregnant women to manage HAE attacks effectively and safely in light of the recent increase in HAE diagnosis. To begin, aggressive work-up is necessary to confirm HAE–1/2 and to determine the most effective countermeasures. Secondly, in the event of an acute attack, plasma-derived C1-inhibitor is the first line of defense for children and pregnant women. Icatibant is also appropriate for use, except in pregnant women. Fresh frozen plasma (FFP) may be suggested as an alternative. Thirdly, proactive measures to prevent HAE attacks should be considered whenever a procedure is performed that may result in an exacerbation. Finally, FFP, attenuated androgen and antifibrinolytic agents are recommended for long-term prophylaxis in South Korea where the C1-inhibitor is scarce. However, when making a decision, it is necessary to consider both the efficacy and the risk of adverse effects. For proper management, written action plans and first-aid kits are required. The action plans should be customized to the patients‘ unique circumstances.

The KAAACI/KDA Evidence-Based Practice Guidelines for Chronic Spontaneous Urticaria in Korean Adults and Children: Part 1. Definition, Methodology and First-line Management

Chronic spontaneous urticaria (CSU) is defined as the occurrence of spontaneous wheals, angioedema, or both for >6 weeks in the absence of specific causes. It is a common condition associated with substantial disease burden both for affected individuals and societies in many countries, including Korea. CSU frequently persists for several years and requires high-intensity treatment; therefore, patients experience deteriorations in quality of life and medication-associated complications. During the last decade, there have been major advances in the pharmacological treatment of CSU and there is an outstanding need for evidence-based guidelines that reflect clinical practice in Korea. The guidelines reported here represent a joint initiative of the Korean Academy of Asthma, Allergy and Clinical Immunology and the Korean Dermatological Association, and aim to provide evidence-based guidance for the management of CSU in Korean adults and children. In Part 1, disease definition, guideline scope and development methodology as well as evidence-based recommendations on the use of antihistamines and corticosteroids are summarized.

The KAAACI/KDA Evidence-Based Practice Guidelines for Chronic Spontaneous Urticaria in Korean Adults and Children: Part 1. Definition, Methodology and First-line Management

Chronic spontaneous urticaria (CSU) is defined as the occurrence of spontaneous wheals, angioedema, or both for >6 weeks in the absence of specific causes. It is a common condition associated with substantial disease burden both for affected individuals and societies in many countries, including Korea. CSU frequently persists for several years and requires high-intensity treatment; therefore, patients experience deteriorations in quality of life and medication-associated complications. During the last decade, there have been major advances in the pharmacological treatment of CSU and there is an outstanding need for evidence-based guidelines that reflect clinical practice in Korea. The guidelines reported here represent a joint initiative of the Korean Academy of Asthma, Allergy and Clinical Immunology and the Korean Dermatological Association, and aim to provide evidence-based guidance for the management of CSU in Korean adults and children. In Part 1, disease definition, guideline scope and development methodology as well as evidence-based recommendations on the use of antihistamines and corticosteroids are summarized.

KAAACI Evidence-Based Clinical Practice Guidelines for Chronic Cough in Adults and Children in Korea

Chronic cough is common in the community and causes significant morbidity. Several factors may underlie this problem, but comorbid conditions located at sensory nerve endings that regulate the cough reflex, including rhinitis, rhinosinusitis, asthma, eosinophilic bronchitis, and gastroesophageal reflux disease, are considered important. However, chronic cough is frequently non-specific and accompanied by not easily identifiable causes during the initial evaluation. Therefore, there are unmet needs for developing empirical treatment and practical diagnostic approaches that can be applied in primary clinics. Meanwhile, in referral clinics, a considerable proportion of adult patients with chronic cough are unexplained or refractory to conventional treatment. The present clinical practice guidelines aim to address major clinical questions regarding empirical treatment, practical diagnostic tools for non-specific chronic cough, and available therapeutic options for chronic wet cough in children and unexplained chronic cough in adults in Korea.

Chronic cough in Korean adults: a literature review on common comorbidity

Chronic cough is a significant medical condition with high prevalence and a strong negative impact on the quality of life. Cough hypersensitivity is thought to underlie chronic cough, with several environmental and host factors interacting to cause neuronal sensitization and chronicity. Comorbid conditions affecting cough reflex pathways, such as upper airway diseases, asthma, and gastroesophageal reflux, play important roles in chronic cough. However, their prevalence may vary in patients living in different geographical regions or with different ethnicities. We conducted a literature review to examine common comorbidities in Korean adult patients with chronic cough, their clinical implications, and the issues that still need to be addressed in the development of clinical evidence of chronic cough in Korean adult patients.

Seborrheic dermatitis treatment with stellate ganglion block: a case report / 대한마취과학회지

Seborrheic dermatitis is a chronic recurrent inflammatory disorder presumed to be caused by increased sebaceous gland secretion, metabolic changes in the cutaneous microflora, and changes in the host immune function. Stellate ganglion block (SGB) is known to increase the blood flow rate without altering the blood pressure, heart rate, or cardiac output, to stabilize hypertonic conditions of the sympathetic nerves, and to affect the endocrine and immune systems. It is used in the differential diagnosis and treatment of autonomic nervous system disorders of the head, neck, and upper limbs. The authors report the first case of successful treatment of a patient with seborrheic dermatitis through repeated SGB trials.

Successful sequential desensitization in a patient with drug hypersensitivity to three kinds of antiplatelet agents

Antiplatelet agents, such as aspirin, clopidogrel, and cilostazol, are essential for the treatment and prevention of cardiovascular, cerebrovascular, and peripheral vascular diseases. A 53-year-old male with aspirin hypersensitivity developed dizziness, which was caused by severe stenosis of the left vertebral artery. Clopidogrel was administerted, but discontinued due to generalized urticaria and angioedema. As an alternative drug, cilostazol was administered, but discontinued again because of the same adverse reactions. Desensitization was planned as other alternative antiplatelet agents were not available. Initially, aspirin desensitization was successfully performed. One day after aspirin desensitization, clopidogrel desensitization was sequentially done successfully. After a few months, cilostazole desensitization was performed. During the follow-up period, he had to stop aspirin and cilostazol twice to prevent the risk of bleeding after a procedure and an operation. After discontinuing medicines, sequential desensitization of aspirin and cilostazol was successfully performed. Physicians should be aware that drug hypersensitivity could be induced by various kinds of antiplatelet agents and that desensitization could be the treatment of choice unless alternative medicines are available.

Recurrence of herpes zoster in a young woman with IgG3 deficiency / 대한마취과학회지

No abstract available.

Successful administration of iodinated contrast media in a patient with anaphylaxis to multiple contrast media

Although hypersensitivity reactions to iodinated contrast media (ICM) are uncommon, their clinical impacts are considerable because of their wide use and potential fatality. The best way to prevent ICM-induced hypersensitivity is to avoid re-exposure to the ICM. However, ICM use is inevitable in the evaluation of many diseases. A 64-year-old male with renal cell carcinoma presented with anaphylaxis after computed tomography (CT) using iohexol. Intradermal test results were positive to iohexol, iomeprol, and ioversol. The following 3 CT scans using the test-negative agents iopromide, iopamidol, and iobitridol still provoked hypersensitivity reactions despite premedication using intravenous antihistamine and corticosteroid. For the next step, iodixanol, a nonionic iso-osmolar dimer, was tested by intravenous graded challenges in addition to the intradermal skin test, which and was confirmed to be negative. The patient underwent CT scan using iodixanol after premedication with chlorpheniramine 4 mg and methylprednisolone 40 mg, and hypersensitivity reactions did not recur. We report a case of a patient showing hyper reactivity to multiple ICMs despite negative intradermal skin tests, who eventually underwent successful enhanced CT scans after choosing ICM by the graded challenge test.

ERRATUM: Acknowledgments Correction. Iodinated contrast media-induced fixed drug eruption

Acknowledgments section for grant support was misprinted unintentionally.

Iodinated contrast media-induced fixed drug eruption

Iodinated contrast media (ICM) can cause not only immediate onset hypersensitivity but also delayed onset hypersensitivity. While the most common form of delayed onset hypersensitivity reaction to ICM is exanthematous eruption, fixed drug eruption (FDE) can occur rarely related to ICM. A 70-year-old male with liver cirrhosis and hepatocellular carcinoma repeatedly experienced erythematous patches on his right forearm and hand 6 hours after exposure to iopromide for computed tomography scan. ICM induced FDE was diagnosed clinically. Intradermal test with 6 kinds of ICM (iobitridol, iohexol, iomeprol, iopamidol, iopromide, and iodixanol) was performed and showed the weakest positive reaction to iohexol compared to the others in 48 hours. After changing iopromide to iohexol based on these results, FDE did not recur. We report here a case of iopromide induced FDE which was successfully prevented by changing ICM to iohexol based on intradermal test results.

Role of Craniofacial Resection for Malignant Tumors Involving the Anterior Skull Base: Surgical Experience in a Single Institution

BACKGROUND: Craniofacial resection (CFR) has been regarded as a standard treatment for various tumors involving the anterior skull base. The purpose of this study was to evaluate the results of CFR for the patients with anterior skull base malignancies in our hospital. METHODS: We retrospectively analyzed 17 patients with anterior skull base malignancies treated with CFR between 2001 and 2012. Mean follow-up duration was 41 months (range, 2-103 months). RESULTS: Intracranial involvement was found in 11 patients (65%) and orbital extension in 6 patients (35%). Classical bifrontal craniotomy was combined with endoscopic endonasal approach in 14 patients and external approach in 3 patients. Vascularized flap was used for reconstruction of the anterior fossa floor in 16 patients (94%). The most common pathological type was squamous cell carcinoma (6 patients). Gross total resection was achieved in all cases. Postoperative complications developed in 4 patients (24%) and included local wound problem and brain abscess. One patient with liver cirrhosis died from unexpected varix bleeding after the operation. Although postoperative treatment, such as radiotherapy or chemotherapy, was performed in 14 patients, local recurrence was seen in 6 patients. The mean overall survival time after the operation was 69.0 months (95% confidence interval: 47.5-90.5 months) with a 1-, 2-, and 5-year survival rate of 82.3%, 76.5%, and 64.7%, respectively. Postoperative radiotherapy was found to be the powerful prognostic factor for favorable survival. CONCLUSION: Considering the higher local control rate and acceptable complication or mortality rate, CFR with adjuvant radiotherapy is a gold standard treatment option for malignant tumors involving anterior skull base, especially with extensive intracranial involvement.

Psoriatic Onycho-pachydermo-periostitis of the Fingertips: A Report of Two Cases

Psoriatic onycho-pachydermo-periostitis (POPP) causes severe nail dystrophy, painful soft tissue swelling, and marked periosteal reaction of the involved distal phalanx. There are few reports of POPP involving the great toe. We report on 2 cases of POPP involving the fingertips. A 60-year-old woman presented with fusiform swelling of her right 4th fingertip with severe tenderness, and her fingernails and toenails had varying degrees of onycholysis. She had mixed multiple erosions and meta-epiphyseal periostitis at the distal phalanx of the right 4th finger but was treated successfully with methotrexate and cyclosporine. A 39-year-old woman presented with painful swelling of the left 2nd and 5th fingertip, psoriatic lesions on the knees and soles of the feet, and onycholysis without reactive periostitis of the left 2nd and 5th fingers. She was treated successfully with cyclosporine. Despite its rarity, POPP should be considered when diagnosing arthritic or infectious conditions affecting the distal interphalangeal joint.

Successful rapid desensitization for cetuximab-induced anaphylaxis

Cetuximab, a chimeric mouse-human immunoglobulin, is an antiepidermal growth factor receptor monoclonal antibody. It has been approved by the U.S. Food and Drug Administration for the treatment of metastatic colorectal and head/neck cancer, but can cause fatal hypersensitivity reactions in some patients. A 66-year-old male with metastatic sigmoid cancer had cetuximab-induced anaphylaxis when the first dose of cetuximab was administered. Cetuximab was safely readministered for another 15 cycles based on the rapid desensitization protocol. We experienced a case of cetuximab-induced anaphylaxis on the first exposure which was successfully managed by rapid desensitization.

Survival and Risk Factor Analysis of Open Wedge Tibial Osteotomy for Medial Unicompartmental Osteoarthritis / 대한정형외과학회잡지

PURPOSE: The purpose of this study was to evaluate the mid to long-term clinicoradiological results of open wedge high tibial osteotomy performed as the primary treatment for medial unicompartmental osteoarthritis of the knee and to analyze the factors that affect the survival rate. MATERIALS AND METHODS: The study cohort consisted of 124 patients who underwent open wedge high tibial osteotomy for medial unicompartmental osteoarthritis of the knee and had a minimum follow-up period of five years. Hospital for special surgery (HSS) and the Western Ontario and MacMaster (WOMAC) scores, tibiofemoral angle, mechanical axis of lower limb, medial proximal tibia angle, and tibia posterior slope angle were used to evaluate the clinical and radiographic outcomes over the mean follow-up period of 85 months. The risk factors that affected the survival rate were calculated by multivariate regression analysis. RESULTS: Mean HSS scores and WOMAC scores showed significant improvements at the final follow-up. The tibiofemoral angle was improved to 8.4 degrees of valgus after surgery. A total of 12 patients (9.7%) failed to survive until the final follow-up resulting in 8 year survivorship of 90.3%. Risk factors significantly affecting the survival rate afteropen wedge high tibial osteotomy included a high body mass index (BMI), severe varus deformity, severe osteoarthritis (Kellgren-Lawrence Grade III or IV) preoperatively and overcorrection angles in operation. CONCLUSION: Open wedge high tibial osteotomy showed good clinical and radiological outcomes in the current study. Analysis of the risk factors influencing survivorship after open wedge high tibial osteotomy suggests that the surgical procedure be avoided or modified with patients who have a high BMI, severe varus deformity, or severe osteoarthritis symptoms preoperatively.

Comparison of dexmedetomidine and epinephrine as an adjuvant to 1% mepivacaine in brachial plexus block / 대한마취과학회지

BACKGROUND: Dexmedetomidine extends the duration of nerve block when administered perineurally together with local anesthetics by central and/or peripheral action. In this study, we compared the duration of nerve block between dexmedetomidine and epinephrine as an adjuvant to 1% mepivacaine in infraclavicular brachial plexus block. METHODS: Thirty patients, scheduled for upper limb surgery were assigned randomly to 3 groups of 10 patients each. We performed brachial plexus block using a nerve stimulator. In the control group (group C), patients received 40 ml of 1% mepivacaine. In group E, patients received 40 ml of 1% mepivacaine containing 200 microg of epinephrine as an adjuvant. In group D, patients received 40 ml of 1% mepivacaine containing 1 microg/kg of dexmedetomidine as an adjuvant. Sensory block duration, motor block duration, time to sense pain, and onset time were assessed. We also monitored blood pressure, heart rate, oxygen saturation and bispectral index. RESULTS: In group D and group E, sensory block duration, motor block duration and time to sense first pain were prolonged significantly compared to group C. However, there was no significant difference between group D and group E. CONCLUSIONS: Perineural 1 microg/kg of dexmedetomidine similarly prolonged nerve block duration compared to 200 microg of epinephrine, but slowed heart rate. Thus, dexmedetomidine is expected to be a good alternative as an adjuvant to local anesthesia in patients who are cautioned against epinephrine.

Arachnoid Membrane Suturing for Prevention of Subdural Fluid Collection in Extracranial-intracranial Bypass Surgery

OBJECTIVE: Water-tight closure of the dura in extracranial-intracranial (EC-IC) bypass is impossible because the superficial temporal artery (STA) must run through the dural defect. Consequently, subdural hygroma and subcutaneous cerebrospinal fluid (CSF) collection frequently occur postoperatively. To reduce these complications, we prospectively performed suturing of the arachnoid membrane after STA-middle cerebral artery (STA-MCA) and evaluated the clinical usefulness. MATERIALS AND METHODS: Between Mar. 2005 and Oct. 2010, extracranial-intracranial arterial bypass (EIAB) with/without encephalo-myo-synangiosis was performed in 88 cases (male : female = 53 : 35). As a control group, 51 patients (57 sides) underwent conventional bypass surgery without closure of the arachnoid membrane. Postoperative computed tomography (CT) scan was performed twice in three days and seven days later, respectively, for evaluation of the presence of subdural fluid collection and other mass lesions. RESULTS: The surgical result was excellent, with no newly developing ischemic event until recent follow-up. The additional time needed for arachnoid suture was five to ten minutes, when three to eight sutures were required. Post-operative subdural fluid collection was not seen on follow-up computed tomography scans in all patients. CONCLUSION: Arachnoid suturing is simple, safe, and effective for prevention of subdural fluid collection in EC-IC bypass surgery, especially the vulnerable ischemic hemisphere.

Predictive Factors for a Kyphosis Recurrence Following Short-Segment Pedicle Screw Fixation Including Fractured Vertebral Body in Unstable Thoracolumbar Burst Fractures

OBJECTIVE: The technique of short segment pedicle screw fixation (SSPSF) has been widely used for stabilization in thoracolumbar burst fractures (TLBFs), but some studies reported high rate of kyphosis recurrence or hardware failure. This study was to evaluate the results of SSPSF including fractured level and to find the risk factors concerned with the kyphosis recurrence in TLBFs. METHODS: This study included 42 patients, including 25 males and 17 females, who underwent SSPSF for stabilization of TLBFs between January 2003 and December 2010. For radiologic assessments, Cobb angle (CA), vertebral wedge angle (VWA), vertebral body compression ratio (VBCR), and difference between VWA and Cobb angle (DbVC) were measured. The relationships between kyphosis recurrence and radiologic parameters or demographic features were investigated. Frankel classification and low back outcome score (LBOS) were used for assessment of clinical outcomes. RESULTS: The mean follow-up period was 38.6 months. CA, VWA, and VBCR were improved after SSPSF, and these parameters were well maintained at the final follow-up with minimal degree of correction loss. Kyphosis recurrence showed a significant increase in patients with Denis burst type A, load-sharing classification (LSC) score >6 or DbVC >6 (p6, or DbVC >6.