Purpose: Although upper eyelid retraction is commonly associated with thyroid eye disease, its etiology remains unclear. This study evaluated the clinical features and treatment outcomes of patients with upper eyelid retraction caused by idiopathic orbital myositis (IOM). Methods: We conducted a retrospective analysis of the medical records of patients who presented with unilateral upper eyelid retraction. IOM was diagnosed based on normal thyroid function tests (TFT), including thyroid-stimulating immunoglobulin (TSI). Orbital imaging demonstrated contrast-enhanced enlargement of the superior rectus-levator palpebrae superioris complex (SR-LC). Pre- and post-systemic steroid treatment, margin-reflex distance 1 (MRD1), MRD1 difference between affected and unaffected eyes, exophthalmos, and diplopia were assessed. Results: In total, five patients (male: 4, female: 1) with a median age of 36.4 years were diagnosed with IOM. Three patients presented with diplopia on upgaze and supraduction limitation. Orbital imaging revealed levator palpebrae superioris muscle enlargement with distinct borders and homogeneous contrast enhancement. All cases with superior rectus enlargement demonstrated tendon involvement. The median duration from symptom onset to treatment initiation was 2.2 months. Four patients received oral prednisolone, whereas one received intravenous methylprednisolone. Although no significant improvements were observed in MRD1, MRD1 difference, or exophthalmos post-treatment, diplopia resolved in all three patients. Conclusions IOM can present with upper eyelid retraction, emphasizing the importance of differentiating it from thyroid eye disease. TFT, including TSIs, and orbital imaging are essential diagnostic tools. These findings indicate that systemic corticosteroids can effectively manage diplopia associated with IOM, emphasizing the potential benefit of early and aggressive treatment.

BACKGROUND: Osteoporosis, characterized by decreased bone mineral density due to an imbalance between osteoblast and osteoclast activity, poses significant challenges in bone healing, particularly in postmenopausal women. Current treatments, such as bisphosphonates, are effective but associated with adverse effects like medication-related osteonecrosis of the jaw, necessitating safer alternatives. METHODS: This study investigated the use of L-serine-incorporated gelatin sponges for bone regeneration in calvarial defects in an ovariectomized rat model of osteoporosis. Thirty rats were divided into three groups: a control group, a group treated with a gelatin sponge containing an amino acid mixture, and a group treated with a gelatin sponge containing L-serine. Bone regeneration was assessed using micro-computed tomography (micro-CT) and histological analyses. RESULTS: The L-serine group showed a significant increase in bone volume (BV) and bone area compared to the control and amino acid groups. The bone volume to total volume (BV/TV) ratio was also significantly higher in the L-serine group.Immunohistochemical analysis demonstrated that L-serine treatment suppressed the expression of cathepsin K, a marker of osteoclast activity, while increasing serine racemase activity. CONCLUSION These findings suggest that L-serine-incorporated gelatin sponges not only enhance bone formation but also inhibit osteoclast-mediated bone resorption, providing a promising and safer alternative to current therapies for osteoporosis-related bone defects. Further research is needed to explore its clinical applications in human patients.

BACKGROUND: Osteoporosis, characterized by decreased bone mineral density due to an imbalance between osteoblast and osteoclast activity, poses significant challenges in bone healing, particularly in postmenopausal women. Current treatments, such as bisphosphonates, are effective but associated with adverse effects like medication-related osteonecrosis of the jaw, necessitating safer alternatives. METHODS: This study investigated the use of L-serine-incorporated gelatin sponges for bone regeneration in calvarial defects in an ovariectomized rat model of osteoporosis. Thirty rats were divided into three groups: a control group, a group treated with a gelatin sponge containing an amino acid mixture, and a group treated with a gelatin sponge containing L-serine. Bone regeneration was assessed using micro-computed tomography (micro-CT) and histological analyses. RESULTS: The L-serine group showed a significant increase in bone volume (BV) and bone area compared to the control and amino acid groups. The bone volume to total volume (BV/TV) ratio was also significantly higher in the L-serine group.Immunohistochemical analysis demonstrated that L-serine treatment suppressed the expression of cathepsin K, a marker of osteoclast activity, while increasing serine racemase activity. CONCLUSION These findings suggest that L-serine-incorporated gelatin sponges not only enhance bone formation but also inhibit osteoclast-mediated bone resorption, providing a promising and safer alternative to current therapies for osteoporosis-related bone defects. Further research is needed to explore its clinical applications in human patients.

BACKGROUND: Osteoporosis, characterized by decreased bone mineral density due to an imbalance between osteoblast and osteoclast activity, poses significant challenges in bone healing, particularly in postmenopausal women. Current treatments, such as bisphosphonates, are effective but associated with adverse effects like medication-related osteonecrosis of the jaw, necessitating safer alternatives. METHODS: This study investigated the use of L-serine-incorporated gelatin sponges for bone regeneration in calvarial defects in an ovariectomized rat model of osteoporosis. Thirty rats were divided into three groups: a control group, a group treated with a gelatin sponge containing an amino acid mixture, and a group treated with a gelatin sponge containing L-serine. Bone regeneration was assessed using micro-computed tomography (micro-CT) and histological analyses. RESULTS: The L-serine group showed a significant increase in bone volume (BV) and bone area compared to the control and amino acid groups. The bone volume to total volume (BV/TV) ratio was also significantly higher in the L-serine group.Immunohistochemical analysis demonstrated that L-serine treatment suppressed the expression of cathepsin K, a marker of osteoclast activity, while increasing serine racemase activity. CONCLUSION These findings suggest that L-serine-incorporated gelatin sponges not only enhance bone formation but also inhibit osteoclast-mediated bone resorption, providing a promising and safer alternative to current therapies for osteoporosis-related bone defects. Further research is needed to explore its clinical applications in human patients.

Purpose: Although upper eyelid retraction is commonly associated with thyroid eye disease, its etiology remains unclear. This study evaluated the clinical features and treatment outcomes of patients with upper eyelid retraction caused by idiopathic orbital myositis (IOM). Methods: We conducted a retrospective analysis of the medical records of patients who presented with unilateral upper eyelid retraction. IOM was diagnosed based on normal thyroid function tests (TFT), including thyroid-stimulating immunoglobulin (TSI). Orbital imaging demonstrated contrast-enhanced enlargement of the superior rectus-levator palpebrae superioris complex (SR-LC). Pre- and post-systemic steroid treatment, margin-reflex distance 1 (MRD1), MRD1 difference between affected and unaffected eyes, exophthalmos, and diplopia were assessed. Results: In total, five patients (male: 4, female: 1) with a median age of 36.4 years were diagnosed with IOM. Three patients presented with diplopia on upgaze and supraduction limitation. Orbital imaging revealed levator palpebrae superioris muscle enlargement with distinct borders and homogeneous contrast enhancement. All cases with superior rectus enlargement demonstrated tendon involvement. The median duration from symptom onset to treatment initiation was 2.2 months. Four patients received oral prednisolone, whereas one received intravenous methylprednisolone. Although no significant improvements were observed in MRD1, MRD1 difference, or exophthalmos post-treatment, diplopia resolved in all three patients. Conclusions IOM can present with upper eyelid retraction, emphasizing the importance of differentiating it from thyroid eye disease. TFT, including TSIs, and orbital imaging are essential diagnostic tools. These findings indicate that systemic corticosteroids can effectively manage diplopia associated with IOM, emphasizing the potential benefit of early and aggressive treatment.

BACKGROUND: Osteoporosis, characterized by decreased bone mineral density due to an imbalance between osteoblast and osteoclast activity, poses significant challenges in bone healing, particularly in postmenopausal women. Current treatments, such as bisphosphonates, are effective but associated with adverse effects like medication-related osteonecrosis of the jaw, necessitating safer alternatives. METHODS: This study investigated the use of L-serine-incorporated gelatin sponges for bone regeneration in calvarial defects in an ovariectomized rat model of osteoporosis. Thirty rats were divided into three groups: a control group, a group treated with a gelatin sponge containing an amino acid mixture, and a group treated with a gelatin sponge containing L-serine. Bone regeneration was assessed using micro-computed tomography (micro-CT) and histological analyses. RESULTS: The L-serine group showed a significant increase in bone volume (BV) and bone area compared to the control and amino acid groups. The bone volume to total volume (BV/TV) ratio was also significantly higher in the L-serine group.Immunohistochemical analysis demonstrated that L-serine treatment suppressed the expression of cathepsin K, a marker of osteoclast activity, while increasing serine racemase activity. CONCLUSION These findings suggest that L-serine-incorporated gelatin sponges not only enhance bone formation but also inhibit osteoclast-mediated bone resorption, providing a promising and safer alternative to current therapies for osteoporosis-related bone defects. Further research is needed to explore its clinical applications in human patients.

Purpose: Although upper eyelid retraction is commonly associated with thyroid eye disease, its etiology remains unclear. This study evaluated the clinical features and treatment outcomes of patients with upper eyelid retraction caused by idiopathic orbital myositis (IOM). Methods: We conducted a retrospective analysis of the medical records of patients who presented with unilateral upper eyelid retraction. IOM was diagnosed based on normal thyroid function tests (TFT), including thyroid-stimulating immunoglobulin (TSI). Orbital imaging demonstrated contrast-enhanced enlargement of the superior rectus-levator palpebrae superioris complex (SR-LC). Pre- and post-systemic steroid treatment, margin-reflex distance 1 (MRD1), MRD1 difference between affected and unaffected eyes, exophthalmos, and diplopia were assessed. Results: In total, five patients (male: 4, female: 1) with a median age of 36.4 years were diagnosed with IOM. Three patients presented with diplopia on upgaze and supraduction limitation. Orbital imaging revealed levator palpebrae superioris muscle enlargement with distinct borders and homogeneous contrast enhancement. All cases with superior rectus enlargement demonstrated tendon involvement. The median duration from symptom onset to treatment initiation was 2.2 months. Four patients received oral prednisolone, whereas one received intravenous methylprednisolone. Although no significant improvements were observed in MRD1, MRD1 difference, or exophthalmos post-treatment, diplopia resolved in all three patients. Conclusions IOM can present with upper eyelid retraction, emphasizing the importance of differentiating it from thyroid eye disease. TFT, including TSIs, and orbital imaging are essential diagnostic tools. These findings indicate that systemic corticosteroids can effectively manage diplopia associated with IOM, emphasizing the potential benefit of early and aggressive treatment.

BACKGROUND: Osteoporosis, characterized by decreased bone mineral density due to an imbalance between osteoblast and osteoclast activity, poses significant challenges in bone healing, particularly in postmenopausal women. Current treatments, such as bisphosphonates, are effective but associated with adverse effects like medication-related osteonecrosis of the jaw, necessitating safer alternatives. METHODS: This study investigated the use of L-serine-incorporated gelatin sponges for bone regeneration in calvarial defects in an ovariectomized rat model of osteoporosis. Thirty rats were divided into three groups: a control group, a group treated with a gelatin sponge containing an amino acid mixture, and a group treated with a gelatin sponge containing L-serine. Bone regeneration was assessed using micro-computed tomography (micro-CT) and histological analyses. RESULTS: The L-serine group showed a significant increase in bone volume (BV) and bone area compared to the control and amino acid groups. The bone volume to total volume (BV/TV) ratio was also significantly higher in the L-serine group.Immunohistochemical analysis demonstrated that L-serine treatment suppressed the expression of cathepsin K, a marker of osteoclast activity, while increasing serine racemase activity. CONCLUSION These findings suggest that L-serine-incorporated gelatin sponges not only enhance bone formation but also inhibit osteoclast-mediated bone resorption, providing a promising and safer alternative to current therapies for osteoporosis-related bone defects. Further research is needed to explore its clinical applications in human patients.

Background/Aims: Acute pancreatitis (AP) is a leading cause of emergency hospitalization. We present the current diagnostic and therapeutic status of AP as revealed by analysis of a large multicenter dataset. Methods: The medical records of patients diagnosed with AP between 2018 and 2019 in 12 tertiary medical centers in Korea were retrospectively reviewed. Results: In total, 676 patients were included, of whom 388 (57.4%) were male, and the mean age of all patients was 58.6 years. There were 355 (52.5%), 301 (44.5%), and 20 (3.0%) patients with mild, moderate, and severe AP, respectively, as assessed by the revised Atlanta classification. The most common etiologies of AP were biliary issues (41.6%) and alcohol consumption (24.6%), followed by hypertriglyceridemia (6.8%). The etiology was not identified in 111 (16.4%) patients at the time of initial admission. The overall mortality rate was 3.3%, increasing up to 45.0% among patients with severe AP. Notably, 70.0% (14/20) of patients with severe AP and 81.5% (154/189) of patients with systemic inflammatory response syndrome had received <4 L per day during the initial 24 hours of admission. Only 23.8% (67/281) of acute biliary pancreatitis patients underwent cholecystectomy during their initial admission. In total, 17.8% of patients experienced recurrent attacks during follow-up. However, none of the patients with acute biliary pancreatitis experienced recurrent attacks if they had undergone cholecystectomy during their initial admission. Conclusions This study provides insights into the current status of AP in Korea, including its etiology, severity, and management. Results reveal disparities between clinical guidelines and their practical implementation for AP treatment.

Purpose: Pelvis tilting in sagittal plane influences the acetabular cup position. Majority of total hip arthroplasty (THA) are performed in lateral decubitus surgical position. This study is to assess whether there is any difference in sacral slope between standing and lateral decubitus position and influence of this variation in planning acetabular cup anteversion. Materials and Methods: This is a prospective study including 50 patients operated between January 2020 to March 2022. Preoperative radiograph included lumbosacral spine lateral X-ray in standing, supine and lateral decubitus positions to calculate the sacral slope for assessment of anterior or posterior pelvic tilting. In our study, we determined the position of the acetabular cup based on changes in sacral slope between standing and lateral decubitus postures. For patients whose sacral slope increased from lateral decubitus to standing, we implanted the acetabular component with a higher degree of anteversion. Conversely, for patients with reverse phenomenon, the cup was inserted at lower anteversion. Results: Twenty-four patients (48.0%) had increase in sacral slope from lateral decubitus to standing whereas 26 patients (52.0%) had decrease in sacral slope. There was linear correlation between difference in preoperative sacral slope and postoperative cross table lateral cup anteversion. Harris hip scores improved from 40.78 to 85.43. There was no subluxation or dislocation in any patient at minimum 2-year follow-up. Conclusion Individualized acetabular cup placement is important for better functional outcome in THA. Evaluation of pelvic tilting in lateral decubitus position is necessary for better positioning of acetabular cup and avoid postoperative complications.