Differences in Pilon Fractures According to Ipsilateral Fibular Injury Patterns: A Clinical Computed Tomography-Based Mapping Study

Background@#Preoperative verification of fracture morphology is essential for determining the definitive fixation strategy in the management of a pilon fracture. This study aimed to determine the correlation between fibular injury patterns and fracture morphologies and introduce clinical implications. @*Methods@#Computed tomography scans of 96 pilon fractures were retrospectively analyzed and divided into three types: intact fibula, simple fracture, and multifragment fracture. The principal fracture line and comminution zones were illustrated on a plafond template and diagrammatized on a 6 × 6 grid using PowerPoint software as fracture mapping. Correlations between fibular injury patterns and fracture morphologies, including comminution zones and principal fracture lines, were analyzed. @*Results@#The thickest comminution zone was most often located in the anterolateral quadrant. According to fibular injury patterns, the comminution zone of the multifragment group was placed two grids more lateral than that of other groups. Lateral exits of the principal fracture line in the multifragment group were much more concentrated within the fibular incisura. @*Conclusions@#In pilon fractures, a more complex fibular fracture pattern was related to the valgus position. Moreover, the articular fracture pattern of pilon fractures differed according to coronal angulation and fibular fracture pattern. These differences should influence the operative approach and placement of the plate.

Posterior Anti-Glide Plating for Supination External Rotation Type Lateral Malleolar Fractures: Clinical Comparison of Locking versus Non-Locking One-Third Semi-Tubular Plate Fixation

Purpose@#The purpose of this study was to evaluate and compare the clinical and radiological outcomes between locking plates and non-locking plates using posterior anti-glide plating for supination external rotation type lateral malleolar fractures. @*Materials and Methods@#A total of 50 patients who underwent internal fixation of posterior anti-glide plating due to lateral malleolar fractures, classified as supination-external rotation (SER) as per the Lauge-Hansen classification system, at our hospital from January 2017 to November 2018 were retro-spectively evaluated. Patients were divided into two groups: 1/3 semi-tubular locking plate (24 patients) and 1/3 semi-tubular non-locking plate (26 patients). A radiographic assessment was performed after surgery to evaluate the time of bone union. The American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot functional score was measured after the surgery to evaluate the clinical outcomes. @*Results@#The two groups showed similar distributions in sex, age, height, body mass index, fracture pattern, and mean follow-up period. Complete bone union was obtained in all cases and the mean bone union time was 13.00±3.38 weeks in Group 1 and 12.92±3.26 weeks in Group 2 (p=0.87). The mean AOFAS score at 24 weeks was 95.66±2.86 in Group 1 and 95.84±2.79 in Group 2 (p=0.82). The mean AOFAS score at 48 weeks was 97.25±3.54 in Group 1 and 96.57±3.07 in Group 2 (p=0.47). Two cases of complications were observed in the non-locking plate group. @*Conclusion@#For the treatment of Lauge-Hansen SER type lateral malleolar fracture, internal fixation us-ing locking 1/3 semi-tubular plate and non-locking 1/3 semi-tubular plate are both favorable fixation methods.

Dual Plate Fixation for Periprosthetic Femur Fracture after Total Knee Arthroplasty / 대한정형외과학회잡지

Purpose@#This study evaluated the results of dual plate fixation for periprosthetic femur fracture after total knee arthroplasty (TKA). @*Materials and Methods@#From October 2007 to February 2013, 23 cases of periprosthetic femur fracture after TKA were treated at the author’s hospital. There were 13 cases of fixation using a medial and lateral dual plate when the stability of the fracture site could not be achieved by one side fixation with a follow-up of more than one year. The cases included no loosening of the femoral component in fractures that were categorized as Lewis–Rorabeck classification II and supracondylar comminuted fractures and elongation of the fracture line to the lateral epicondyle of the femur or stem in the medullary canal. The mean age was 72 years (65–82 years), and 11 cases were female. Three cases had a stem due to revision. The mean bone marrow density was -3.2 (-1.7 to -4.4), and the mean period from primary TKA to periprosthetic fractures was 28 months (1–108 months). The mean follow-up period was 23 months (12–65 months). The medial fracture site was first exposed via the subvastus approach. Second, the supplementary plate was fixed on the lateral side of the fracture using a minimally invasive plate osteosynthesis technique. The average union time, complications, and Hospital for Special Surgery Knee Score (HSS) at the last follow-up were evaluated. @*Results@#The mean union time was 17.4 weeks (7–40 weeks). Two cases showed delayed bone union and nonunion occurred in one case, in whom bone union was achieved three months later after re-fixation using a dual plate with an autogenous bone graft. The mean varusvalgus angulation was 1.67 degrees (-1.2–4.9 degrees), and the mean anterior-posterior angulation was 2.86 degrees (0–4.9 degrees) at the last follow-up. The mean knee range of motion was 90 degrees, and the HSS score was 85 points (70–95 points) at the last follow-up. @*Conclusion@#Dual plate fixation for periprosthetic femur fractures that had not achieved stability by one side plate fixation after TKA showed a good clinical result that allowed early rehabilitation.

Correlation between meniscal extrusion and symptom duration, alignment, and arthritic changes in medial meniscus posterior root tear: research article

Background@#Medial meniscus posterior root tear can result in medial meniscus extrusion. However, the severity of medial meniscus extrusion is different in each root tear patient. The purpose of this study was to identify the factors that contribute to the severity of medial meniscus extrusion with medial meniscus posterior root tear, such as duration of disease, the degree of arthritis—chondral wear, subchondral edema, osteophyte size, and Kellgren– Lawrence (K/L) grade—and mechanical alignment for appropriate treatment method. @*Methods@#From January 2009 to August 2014, we retrospectively analyzed magnetic resonance imaging (MRI) and simple x-ray of 99 patients with medial meniscus posterior root tear. The duration of the disease was identified through retrospective chart review. The severity of medial meniscus extrusion, the presence of subchondral edema, the degree of chondral wear, and the size of the osteophyte were measured on MRI. K/L grade was confirmed on simple x-ray, and the mechanical axis was measured on whole extremity radiographs. Statistical analysis was performed by using bivariate correlation analysis and one-way analysis of variance. @*Results@#The mean medial meniscus extrusion was 4.61 mm, and the mean duration of the disease was 15.52 months.The mean degree of chondral wear was 25.8%, and 63 out of 99 cases showed subchondral edema. The average alignment was 4.30 degrees, and the average size of the osteophyte was 1.48 mm. There were 40 cases (40.4%) with K/ L grade I, 48 cases (48.5%) with grade II, 11 cases (11.1%) with grade III, and no cases with grade IV. In the group mean analysis between the K/L grade and the severity of medial meniscus extrusion, the average medial meniscus extrusions were 3.97 mm in grade I, 4.93 mm in grade II, and 5.59 mm in grade III. There was a statistical significance between the size of the osteophyte and the severity of medial meniscus extrusion (P = 0.000), K/L grade, and the severity of medial meniscus extrusion (P = 0.001). @*Conclusions@#The severity of medial meniscus extrusion with medial meniscus posterior horn root tear is associated with the size of the osteophyte and K/L grade.

Clinical Outcome after Treatment of Tibia Segmental Fracture with Intramedullary Nailing and Minimal Invasive Plate Osteosynthesis

Purpose@#This study examined the clinical outcomes after the treatment of a tibia segmental fracture with intramedullary nailing (IM nailing) and minimal invasive plate osteosynthesis (MIPO). @*Materials and Methods@#From July 2012 to December 2017, 14 out of 17 cases from a treatment cohort of 32 cases of AO type 42 C2 tibia segmental fractures with IM nailing and MIPO were studied retrospectively. Periodic radiographs were used to evaluate the presence of union, union time, and radiographic evaluation of bony union (varus-valgus deformity, anteroposterior angular deformity, shortening). To evaluate the postoperative clinical function, modified Rasmussen’s system was used for proximal fractures, and the American Orthopaedic Foot and Ankle Society functional score was used for distal fractures. @*Results@#Bony union was achieved in all 14 cases, and the average union time was 26 weeks. In one case of soil contamination, there were no other complications other than simple debridement after a soft tissue infection. The mean varus was two degrees; the mean anteroposterior angular deformity was three degrees of anterior oblique; the mean length shortening was 5 mm (2-9 mm). The mean functional score of the knee joint with the Modified Rasmussen’s system measured for the postoperative clinical function was relatively good (excellent 9, good 4, fair 1, and poor 0). The results of the Molander and Olerud Functional scores of the ankle joints were also good (excellent 8, good 3, fair 2, poor 0). @*Conclusion@#The treatment of tibia segmental fractures with IM nailing and MIPO can effectively reduce the gap of fracture sites. Hence, it is possible to increase the bony union probability and obtain relatively satisfactory alignment. Overall, the treatment of tibia segmental fractures with IM nailing and minimally invasive plate osteosynthesis appears to be a useful treatment, considering the preservation of the soft tissue and the alignment of the tibia.

The Volume of Subscapularis Muscle Remains Unaffected by Supraspinatus Tendon Tears: Three-dimensionally Reconstructed Magnetic Resonance Imaging Analysis

BACKGROUND: This study aimed to compare the subscapularis muscle volume between the intact groups (group I) and supraspinatus tendon tear groups (group T) based on the sex and three different age groups. METHODS: Subjects with a group I and subjects with group T without any other lesions were retrospectively evaluated from among patients who received a magnetic resonance imaging (MRI) scan between January 2011 and December 2013. The MRI scans were studied by a consultant radiologist. The subscapularis muscle volume was compared according to the age and sex; the age groups were categorized as patients in their 40s, 50s, and 60s. The volume of subscapularis muscle was measured by three-dimensional reconstructed images acquired through the axial section of 1.5T MRI. RESULTS: No statistically significant differences were observed between subscapularis muscle volume of the group I and group T, except for male patients in their 50s (group I: 100,650 mm3 vs. group T: 106,488 mm3) and 60s (group I: 76,347 mm3 vs. group T: 99,549 mm3) (p<0.05). Males had a larger mean volume of subscapularis muscle than females, and the subscapularis muscle volume decreased in a linear manner with increasing age. CONCLUSIONS: Decrease in subscapularis muscle volume was observed with increasing age, and the impact of supraspinatus tear on subscapularis muscle volume is age and sex dependent.

Three-dimensional Capsular Volume Measurements in Multidirectional Shoulder Instability

BACKGROUND: In a previous study undertaken to quantify capsular volume in rotator cuff interval or axillary pouch, significant differences were found between controls and patients with instability. However, the results obtained were derived from two-dimensional cross sectional areas. In our study, we sought correlation between three-dimensional (3D) capsular volumes, as measured by magnetic resonance arthrography (MRA), and multidirectional instability (MDI) of the shoulder. METHODS: The MRAs of 21 patients with MDI of the shoulder and 16 control cases with no instability were retrospectively reviewed. Capsular areas determined by MRA were translated into 3D volumes using 3D software Mimics ver. 16 (Materilise, Leuven, Belgium), and glenoid surface area was measured in axial and coronal MRA views. Then, the ratio between capsular volume and glenoid surface area was calculated, and evaluated with control group. RESULTS: The ratio between 3D capsular volume and glenoid surface area was significantly increased in the MDI group (3.59 ± 0.83 cm³/cm²) compared to the control group (2.53 ± 0.62 cm³/cm²) (p < 0.01). CONCLUSIONS: From these results, we could support that capsular volume enlargement play an important role in MDI of the shoulder using volume measurement.

A Case of Sarcomatoid Carcinoma Arising from Mucinous Cystadenocarcinoma of Appendix

Sarcomatoid carcinoma or carcinosarcoma is a very rare biphasic tumor characterized by a combination of malignant epithelial and mesenchymal cells. The pathogenesis of sarcomatoid carcinoma is not fully elucidated and the guideline of treatment has not been established yet. Although the upper aerodigestive tract, lung and female urogenital system are known to be the most frequently affected, this tumor also can occur in various sites, including the digestive tract. Since sarcomatoid carcinoma in colon was firstly reported in 1986, 24 cases have been reported to date. We report a rare case with sarcomatoid carcinoma of appendix. Interesting histologic feature of our case was the presence of mucinous cystadenocarcinoma with morphological "transition" between carcinomatous and sarcomatous tissue. To our knowledge, this is the first case of sarcomatoid carcinoma arising from mucinous cystadenocarcinoma of the appendix.

Acute Cholecystitis After a Colonoscopy

Acute cholecystitis after a colonoscopy is a rare event, and only eight documented cases are reported in the literature. A 35-year-old male underwent a screening colonoscopy. There was a 5-mm sessile polyp in the sigmoid colon, which was removed by using a hot snare polypectomy. Forty-eight hours after the colonoscopy, the patient visited our emergency department with epigastric pain and fever. Based on the clinical findings, laboratory data and radiologic imaging, our diagnosis was acute cholecystitis. Because no previous cases of this type have been reported to date in Korea, we publish the details of our patients who presented with a postcolonoscopy complication diagnosed as acute cholecystitis.

Acute Cholecystitis After a Colonoscopy

Acute cholecystitis after a colonoscopy is a rare event, and only eight documented cases are reported in the literature. A 35-year-old male underwent a screening colonoscopy. There was a 5-mm sessile polyp in the sigmoid colon, which was removed by using a hot snare polypectomy. Forty-eight hours after the colonoscopy, the patient visited our emergency department with epigastric pain and fever. Based on the clinical findings, laboratory data and radiologic imaging, our diagnosis was acute cholecystitis. Because no previous cases of this type have been reported to date in Korea, we publish the details of our patients who presented with a postcolonoscopy complication diagnosed as acute cholecystitis.

An IgG4-Related Inflammatory Pseudotumor of the Greater Omentum / 대한내과학회지

IgG4-related sclerosing disease is a novel clinical disease entity characterized by an elevated serum IgG4 concentration and tissue infiltration by IgG4-positive plasma cells. Although this disease is a novel entity, it is not rare and is present in a proportion of patients with a wide variety of diseases, including autoimmune pancreatitis, sclerosing cholangitis, retroperitoneal fibrosis, and inflammatory pseudotumor. Despite the effectiveness of steroid therapy, IgG4-related sclerosing disease is often misdiagnosed as a malignant tumor. Here, we report an inflammatory pseudotumor of the great omentum that was misdiagnosed as a malignant tumor and subject to surgical resection.

A Case of Endoscopic Treatment for Gastrocolocutaneous Fistula as a Complication of Percutaneous Endoscopic Gastrostomy

As a rare complication of percutaneous endoscopic gastroscopy (PEG), a gastrocolocutaneous fistula may occur after PEG placement. This paper reports an interesting case which PEG tube unintentionally penetrated transverse colon during PEG. A 72-year-old female patient who suffered from medullary infarction underwent PEG procedure for enteral nutrition, and fecal materials were observed 6 days after the procedure. Transverse colon located in antero-superior site of stomach was observed through abdominal computed tomography, and also the wrong inserted tube was found through gastroscopy and colonoscopy. Endoscopic treatment for the fistula was performed by the use of hemo-clip and detachable snare, closure of the fistula was finally confirmed 6 days after the endoscopic procedure. Therefore, the gastrocolocutaneous fistula should be considered as one of the complications of PEG when fecal material is observed through PEG tube in a few days after PEG procedure and endoscopic treatment can be feasible in this case.

Clinical characteristics and prevalence of toxoplasma infection in human immunodeficiency virus-infected patients in South Korea / 대한내과학회지

BACKGROUND/AIMS: Toxoplasmic encephalitis (TE) is one of the most common causes of focal brain lesions, which complicate the course of acquired immunodeficiency syndrome (AIDS). There is wide geographic variation in the prevalence of toxoplasma infection. This study was performed to characterize toxoplasma infection in human immunodeficiency virus (HIV)-infected patients in South Korea. METHODS: We retrospectively examined the incidence and clinical characteristics of TE in 683 HIV-infected patients who were enrolled between 1990 and 2008 at four university hospitals in Busan, Korea. We also assessed the seroprevalence of IgG antibodies to Toxoplasma gondii, risk factors for toxoplasma seropositivity, and seroconversion rates during the course of HIV infection. RESULTS: Among 683 HIV-infected patients, six (0.9%) patients were diagnosed with TE. The incidence of TE was 0.34 per 100 person-years (py) during the study period. Of the 414 patients who had undergone serological examinations for Toxoplasma gondii, 35 (8.5%) patients were seropositive. Univariate analysis showed that the risk factors associated with toxoplasma seropositivity included increased age, heterosexual transmission, marriage, and a history of overseas residence (p<0.05). Of these factors, a history of overseas residence was a significant risk factor in a multivariate analysis (p<0.05). A total of 95 patients who were seronegative on their initial screen showed serial toxoplasma IgG antibodies (mean duration of follow-up, 2.1 years). Among these patients, only two (2.1%) acquired IgG antibodies to Toxoplasma gondii during the follow-up period. CONCLUSIONS: The seroprevalence of anti-toxoplasma IgG antibodies in HIV-infected patients in Korea was 8.5%. A history of overseas residence was a significant risk factor for toxoplasma seropositivity. The incidence of TE was 0.34/100 py, which is lower than that reported in other countries. Toxoplasma seroconversion was also uncommon (2.1%).