1.Unrecognized bony Bankart lesion accompanying a dislocated four-part proximal humerus fracture before surgery: a case report
Seungjin LEE ; Daehun SHIN ; Yoonsuk HYUN
Clinics in Shoulder and Elbow 2022;25(1):68-72
Proximal humerus fractures are the third most common fractures, totaling 4% to 5% of all fractures. Here, we present the case of a 39-yearold man with a dislocated four-part fracture of the proximal humerus with a huge bony Bankart lesion. Preoperatively, the bony Bankart lesion of the glenoid was not visualized on computed tomography scans or magnetic resonance imaging because the fracture of the proximal humerus was comminuted, displaced, and complex. It was planned for only the humerus fracture to be treated by open reduction and internal fixation using a locking plate. However, a fractured fragment remained under the scapula after reduction of the dislocated humeral head. This was mistaken for a dislocated bone fragment of the greater tuberosity and repositioning was attempted. After failure, visual confirmation showed that the bone fragment was a piece of the glenoid. After reduction and fixation of this glenoid part with suture anchors, we acquired a well-reduced fluoroscopic image. Given this case of complex proximal humerus fracture, a glenoid fracture such as a bony Bankart lesion should be considered preoperatively and intraoperatively in such cases.
2.Treatment of Failed Arthrodesis of First Metatarsophalangeal Joint with Tensor Fascia Lata Interposition Arthroplasty: A Case Report.
Jaewoo SIM ; Yoonsuk HYUN ; Junsik PARK ; Saehyun KANG ; Hwanjin KWON ; Gablae KIM
Journal of Korean Foot and Ankle Society 2017;21(1):39-42
Surgical treatments for arthritis in the first metatarsophalangeal joint include arthrodesis, interposition arthroplasty using silicone or meniscus cartilage, and rarely arthroplasty. Although arthrodesis was performed successfully, pain can persist if the angle of fusion was inappropriate. Interposition arthroplasty can be tried for the treatment of persisting pain after the arthrodesis. Interposition arthroplasty using tensor fascia lata is known that has low risk of adhesions and easy to harvest. Compared to autologous grafts, grafting rates is high and low risk of rejection additionally. Herein, we report a successfully managed arthritis with severe pain with interposition arthroplasty using tensor fascia lata after a failed metatarsophalangeal joint arthrodesis.
Arthritis
;
Arthrodesis*
;
Arthroplasty*
;
Cartilage
;
Fascia Lata*
;
Fascia*
;
Metatarsophalangeal Joint*
;
Silicon
;
Silicones
;
Transplants
3.Relative Risk and Clinical Severity Assessment in Patients with Non-Oral Route Organophosphate Poisoning Compared with Oral Route Poisoning.
Woo Jin JUNG ; Min Heui YU ; Yoonsuk LEE ; Hyun KIM ; Yong Sung CHA ; Kyung Hye PARK
Yonsei Medical Journal 2018;59(8):982-988
PURPOSE: Organophosphates, commonly used in agricultural pesticides, pose high risks and incidences of poisoning. In the present study, we investigated the relative risk and clinical severity, including laboratory results, of non-oral route poisoning (NORP) patients, compared to oral route poisoning (ORP) patients. MATERIALS AND METHODS: A single institutional toxicology database registry was utilized to gain information on clinical laboratory results on organophosphate poisoning patients who visited the emergency department (ED) between January 2000 and October 2016. Clinical outcomes, such as mortality and complication rates, were compared using 1:2 propensity score matching in the total cohort. RESULTS: Among a total of 273 patients in our study, 34 experienced NORP. After 1:2 propensity score matching, rates of respiratory complications and mortality were higher in the ORP group than in the NORP group. However, there was no difference in hospitalization time and time spent in the intensive care unit between the two groups. Compared with ORP patients after matching, the relative risk of mortality in NORP patients was 0.34, and the risk of respiratory distress was 0.47. The mean level of pseudocholinesterase was significantly higher in the NORP group than in the ORP group, while recovery rates were similar between the two groups. CONCLUSION: Although the majority of NORP patients were admitted to the ED with unintentional poisoning and the relative risk of NORP was lower than that for ORP, we concluded that NORP is as critical as ORP. Considerable medical observation and intensive therapeutic approaches are also needed for NORP patients.
Cholinesterases
;
Cohort Studies
;
Emergency Service, Hospital
;
Hospitalization
;
Humans
;
Incidence
;
Intensive Care Units
;
Mortality
;
Organophosphate Poisoning*
;
Organophosphates
;
Pesticides
;
Poisoning*
;
Propensity Score
;
Pseudocholinesterase
;
Toxicology
4.Large Hill–Sachs Lesion Combined with a Rotator Cuff Tear in an Acute Traumatic Anterior Dislocation of the Shoulder in an Elderly Patient Treated with an Allogenic Iliac Tricortical Bone Graft
Yoonsuk HYUN ; Jinkyu LIM ; Seung-Ha BAEK ; Jinho PARK ; Seung-Jin LEE
The Journal of the Korean Orthopaedic Association 2020;55(2):188-192
An indirect reduction through the bicipital groove and allogenic iliac tricortical bone graft was performed as a treatment for a large Hill– Sachs lesion with a rotator cuff tear in an acute traumatic shoulder joint dislocation in an elderly patient. Six months after surgery, the rotator cuff healing and bone union were confirmed. The patient also showed satisfactory clinical results with 95 points of the American Shoulder and Elbow Surgeons (ASES) shoulder score and active range of motion with 155° flexion, 120° abduction, and 70° external rotation and 30º internal rotation at 90º abduction. The surgical method can be considered for a large Hill–Sachs lesion with rotator cuff tear in an acute traumatic shoulder joint dislocation in elderly patients.
5.Relationship between Serum Neuron Specific Enolase Level and Seizure in Patients with Acute Glufosinate Ammonium Poisoning.
Gyo Jin AN ; Yoonsuk LEE ; Yong Sung CHAN ; Hyun KIM
Journal of The Korean Society of Clinical Toxicology 2018;16(1):49-56
PURPOSE: Glufosinate ammonium poisoning can cause seizures, even after a symptom-free period. This study was conducted to evaluate the relationship between serum neuron specific enolase (NSE) level and the occurrence of seizures in patients with acute glufosinate ammonium poisoning. METHODS: For this retrospective observational study, data from patients diagnosed with acute glufosinate ammonium poisoning were collected between January 2016 and June 2016. Serum NSE was measured within 2 hours of arrival at the emergency department. The patients were divided into a seizure group and a non-seizure group. RESULTS: The seizure group included eight of the 15 total patients (53.3%). The serum NSE level was significantly higher in the seizure group than in the non-seizure group (32.4±11.9 ng/mL vs. 19.5±5 ng/mL, p=0.019). The amount of glufosinate ingested and initial and peak serum ammonia levels were significantly higher in the seizure group than in the non-seizure group. There was no significant difference in the area under the curve of the serum NSE level or the initial and peak serum ammonia levels in terms of predicting the occurrence of seizures. CONCLUSION: In acute glufosinate poisoning, initial serum NSE levels may help in prediction of seizures.
Ammonia
;
Ammonium Compounds*
;
Biomarkers
;
Emergency Service, Hospital
;
Herbicides
;
Humans
;
Neurons*
;
Observational Study
;
Phosphopyruvate Hydratase*
;
Poisoning*
;
Retrospective Studies
;
Seizures*
6.Usefulness of serum lactate as a predictor of successful discontinuation of continuous atropine infusion in patients with severe acute organophosphate poisoning.
Ho Chul KWON ; Yong Sung CHA ; Gyo Jin AN ; Yoonsuk LEE ; Hyun KIM
Clinical and Experimental Emergency Medicine 2018;5(3):177-184
OBJECTIVE: In severe organophosphate (OP) poisoning, administration of atropine via continuous intravenous infusion is typically considered. To date, there have been no studies on predicting successful atropine discontinuation through plasma cholinesterase (PChE) and serum lactate levels, which are monitored during critical care in severe acute OP poisoning. Therefore, we retrospectively evaluated the usefulness of serum lactate and PChE as predictors of successful discontinuation of atropine infusion. METHODS: This retrospective observational study was performed on consecutive adult patients treated for severe acute OP poisoning between March 2011 and December 2016. We sequentially evaluated serum lactate and PChE levels on emergency department arrival and before a discontinuation trial of atropine infusion. Discontinuation of atropine intravenous infusion was attempted in patients after clearance of respiratory secretions and cessation of bronchoconstriction. Discontinuation of atropine infusion attempts were divided into successful and failed trials. RESULTS: A total of 95 trials were conducted in 62 patients. Serum lactate levels before trials were significantly different between patients with successful and failed trials. The area under the curve for prediction of successful atropine discontinuation using serum lactate levels before trial discontinuation were 0.742 (95% confidence interval, 0.638 to 0.846). PChE level was not significantly different between two groups. CONCLUSION: Serum lactate levels before the discontinuation trial of atropine infusion served to predict successful discontinuation in severe acute OP poisoning.
Adult
;
Atropine*
;
Bronchoconstriction
;
Cholinesterases
;
Critical Care
;
Emergency Service, Hospital
;
Humans
;
Infusions, Intravenous
;
Lactic Acid*
;
Observational Study
;
Organophosphate Poisoning*
;
Plasma
;
Poisoning
;
Prognosis
;
Retrospective Studies
7.Successful treatment of central retinal artery occlusion using hyperbaric oxygen therapy.
Soo Han KIM ; Yong Sung CHA ; Yoonsuk LEE ; Hyun KIM ; Ie Na YOON
Clinical and Experimental Emergency Medicine 2018;5(4):278-281
Central retinal artery occlusion (CRAO) is considered an ophthalmologic emergency. The prognosis of this disease is very poor. Currently, there is no generally effective therapy available to treat CRAO. Hyperbaric oxygen therapy (HBOT) can increase the volume of oxygen delivered to the ischemic retinal tissue until spontaneous or assisted reperfusion occurs. We report the case of a patient who experienced sudden visual loss due to CRAO that was treated with HBOT. The patient was an 81-year-old woman who presented with CRAO in her right eye (OD). She exhibited “hand motion” visual acuity before treatment. She underwent three sessions of HBOT at a pressure of 2.8 atmospheres absolute, performed over 3 days. After 4 days in hospital, her visual acuity improved to 0.4 (OD) for far vision and 0.5 (OD) for near vision. Her vision was stable without the supply of oxygen; therefore, she was discharged.
Aged, 80 and over
;
Atmosphere
;
Emergencies
;
Female
;
Humans
;
Hyperbaric Oxygenation
;
Ophthalmic Artery
;
Oxygen*
;
Prognosis
;
Reperfusion
;
Retinal Artery Occlusion*
;
Retinal Artery*
;
Retinaldehyde
;
Visual Acuity
8.Evaluation of the Dosimeter Volume Effect on Small-Field Dosimetry Using the Elekta Harmony Pro Linear Accelerator
Hyojun PARK ; Jin JEGAL ; Yoonsuk HUH ; Inbum LEE ; Sung Hyun LEE ; Chang Heon CHOI ; Jung-In KIM ; Seonghee KANG
Progress in Medical Physics 2024;35(4):89-97
Purpose:
This study investigated the dose perturbation according to the size of the sensitive volume in the dosimeter in small-field dosimetry.
Methods:
The dose profiles with different field sizes were measured using three different dosimeters: the CC13, Razor ion chamber, and Edge solid-state detector. Both the open and wedged beams with different field sizes were employed in the measurement. The profiles were measured in a water phantom at maximum dose depths of 5, 10, and 20 cm. The penumbra and width of the open-beam profiles were compared according to the types of the dosimeters and beam. The dose fall-off between the peak and 20% dose was evaluated for the wedged beam profiles.
Results:
In the open-beam measurement, the fall-off of the profile was steeper with the Edge detector, which has the smallest sensitive volume. Meanwhile, the dose in the out-of-field region was the smallest with the Edge detector. The widths of the penumbra were 6.10, 4.47, and 4.03 mm for the profile of the 3×3 cm 2 field measured by the CC13 chamber, Razor chamber, and Edge detector, respectively. The width of the profile was not changed even if different dosimeters were used in the measurement. The wedged beam profiles showed more clear peaks at the field edge when a smaller dosimeter was used.
Conclusions
The results demonstrate the necessity of dosimeters with a small sensitive volume for measuring a small-field beam or a steep dose gradient.
9.Evaluation of the Dosimeter Volume Effect on Small-Field Dosimetry Using the Elekta Harmony Pro Linear Accelerator
Hyojun PARK ; Jin JEGAL ; Yoonsuk HUH ; Inbum LEE ; Sung Hyun LEE ; Chang Heon CHOI ; Jung-In KIM ; Seonghee KANG
Progress in Medical Physics 2024;35(4):89-97
Purpose:
This study investigated the dose perturbation according to the size of the sensitive volume in the dosimeter in small-field dosimetry.
Methods:
The dose profiles with different field sizes were measured using three different dosimeters: the CC13, Razor ion chamber, and Edge solid-state detector. Both the open and wedged beams with different field sizes were employed in the measurement. The profiles were measured in a water phantom at maximum dose depths of 5, 10, and 20 cm. The penumbra and width of the open-beam profiles were compared according to the types of the dosimeters and beam. The dose fall-off between the peak and 20% dose was evaluated for the wedged beam profiles.
Results:
In the open-beam measurement, the fall-off of the profile was steeper with the Edge detector, which has the smallest sensitive volume. Meanwhile, the dose in the out-of-field region was the smallest with the Edge detector. The widths of the penumbra were 6.10, 4.47, and 4.03 mm for the profile of the 3×3 cm 2 field measured by the CC13 chamber, Razor chamber, and Edge detector, respectively. The width of the profile was not changed even if different dosimeters were used in the measurement. The wedged beam profiles showed more clear peaks at the field edge when a smaller dosimeter was used.
Conclusions
The results demonstrate the necessity of dosimeters with a small sensitive volume for measuring a small-field beam or a steep dose gradient.
10.Evaluation of the Dosimeter Volume Effect on Small-Field Dosimetry Using the Elekta Harmony Pro Linear Accelerator
Hyojun PARK ; Jin JEGAL ; Yoonsuk HUH ; Inbum LEE ; Sung Hyun LEE ; Chang Heon CHOI ; Jung-In KIM ; Seonghee KANG
Progress in Medical Physics 2024;35(4):89-97
Purpose:
This study investigated the dose perturbation according to the size of the sensitive volume in the dosimeter in small-field dosimetry.
Methods:
The dose profiles with different field sizes were measured using three different dosimeters: the CC13, Razor ion chamber, and Edge solid-state detector. Both the open and wedged beams with different field sizes were employed in the measurement. The profiles were measured in a water phantom at maximum dose depths of 5, 10, and 20 cm. The penumbra and width of the open-beam profiles were compared according to the types of the dosimeters and beam. The dose fall-off between the peak and 20% dose was evaluated for the wedged beam profiles.
Results:
In the open-beam measurement, the fall-off of the profile was steeper with the Edge detector, which has the smallest sensitive volume. Meanwhile, the dose in the out-of-field region was the smallest with the Edge detector. The widths of the penumbra were 6.10, 4.47, and 4.03 mm for the profile of the 3×3 cm 2 field measured by the CC13 chamber, Razor chamber, and Edge detector, respectively. The width of the profile was not changed even if different dosimeters were used in the measurement. The wedged beam profiles showed more clear peaks at the field edge when a smaller dosimeter was used.
Conclusions
The results demonstrate the necessity of dosimeters with a small sensitive volume for measuring a small-field beam or a steep dose gradient.