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.

Comparison of the Results between Plating and Intramedullary Nailing for Ipsilateral Fibular Fractures in Pilon Fractures

Purpose@#To compare the results between plating and intramedullary nailing for ipsilateral fibular fractures in pilon fractures. @*Materials and Methods@#Among 124 patients with pilon fractures from November 2008 to March 2019, 50 patients with a fibular fracture were studied retrospectively and divided into two groups:Group A using a plate and Group B using a Rush pin. The radiological tests confirmed the fracture pat-terns (Rüedi–Allgöwer classification, AO/OTA classification) and evaluated the degree of reduction of fibular and tibial fractures after surgery. The American Orthopaedic Foot & Ankle Society (AOFAS) was examined for a clinical evaluation, and the complications were checked. @*Results@#The two groups showed similar distributions in gender, age, injury mechanism, diabetes, smoking, mean follow-up period, Rüedi–Allgöwer classification, AO/OTA classification, and open fracture.The fibular fractures were classified as simple, wedge, multiple, and segmental, showing significant differences between the two groups (p=0.03). There was no difference in the Talocrural angle, Shenton line, and Dime sign. In the reduction of pilon fractures, the appropriate reduction was obtained in 22 cases (88.0%) for both groups. The AOFAS averaged 83.24 in Group A and 80.44 points in Group B, showing no significant difference in complications (nonunion, malunion, infection, and arthritis). @*Conclusion@#Regardless of how the fibular fracture was fixed, the reduction of pilon fractures in bothgroups showed good results. Both intramedullary nail and plate fixation could be a suitable fixation method for ipsilateral fibular fractures with a low risk of shortening in pilon fractures.

Comparison of the Results between Plating and Intramedullary Nailing for Ipsilateral Fibular Fractures in Pilon Fractures

Purpose@#To compare the results between plating and intramedullary nailing for ipsilateral fibular fractures in pilon fractures. @*Materials and Methods@#Among 124 patients with pilon fractures from November 2008 to March 2019, 50 patients with a fibular fracture were studied retrospectively and divided into two groups:Group A using a plate and Group B using a Rush pin. The radiological tests confirmed the fracture pat-terns (Rüedi–Allgöwer classification, AO/OTA classification) and evaluated the degree of reduction of fibular and tibial fractures after surgery. The American Orthopaedic Foot & Ankle Society (AOFAS) was examined for a clinical evaluation, and the complications were checked. @*Results@#The two groups showed similar distributions in gender, age, injury mechanism, diabetes, smoking, mean follow-up period, Rüedi–Allgöwer classification, AO/OTA classification, and open fracture.The fibular fractures were classified as simple, wedge, multiple, and segmental, showing significant differences between the two groups (p=0.03). There was no difference in the Talocrural angle, Shenton line, and Dime sign. In the reduction of pilon fractures, the appropriate reduction was obtained in 22 cases (88.0%) for both groups. The AOFAS averaged 83.24 in Group A and 80.44 points in Group B, showing no significant difference in complications (nonunion, malunion, infection, and arthritis). @*Conclusion@#Regardless of how the fibular fracture was fixed, the reduction of pilon fractures in bothgroups showed good results. Both intramedullary nail and plate fixation could be a suitable fixation method for ipsilateral fibular fractures with a low risk of shortening in pilon fractures.

A Comparison of Proximal and Distal Chevron Osteotomy for the Correction of Severe Hallux Valgus Deformity / 대한족부족관절학회지

Purpose@#This study compared the results of proximal and distal chevron osteotomy in patients with severe hallux valgus. Several recent studies have shown that the indications for distal metatarsal osteotomy with a distal soft-tissue procedure could be extended to include severe hallux valgus. @*Materials and Methods@#This study analyzed 127 severe hallux valgus surgeries. Of these, 76 patients (76 feet) were excluded for lack of adequate follow-up and additional procedures (Akin procedure), leaving 51 patients (51 feet) in the study. The mean age of the patients was 58 years (21~83 years), and the mean follow-up duration was 18 months (12~32 months). The patients were divided into two groups. Group 1 underwent distal chevron osteotomy, and group 2 underwent proximal chevron osteotomy performed sequentially by a single surgeon. The patients were interviewed for the American Orthopaedic Foot and Ankle Society (AOFAS) score before and one year after surgery. The anteroposterior weight-bearing radiography of the foot was taken before and one year after surgery. @*Results@#There were no significant differences in pain and function after one year in either group. Both groups experienced significant pain reduction and an increase in the AOFAS score. Significant improvement of the hallux valgus and intermetatarsal angle corrections was observed in both groups, and the sesamoid position was similar in each group. More improvement in radiographic correction of intermetatarsal angle was noted in group 2. Both procedures gave similar good clinical and radiological outcomes. @*Conclusion@#This study suggests that a distal chevron osteotomy with a distal soft-tissue procedure is as effective and reliable a means of correcting severe hallux valgus as a proximal chevron osteotomy with a distal soft-tissue procedure.

A Comparison of Proximal and Distal Chevron Osteotomy for the Correction of Severe Hallux Valgus Deformity / 대한족부족관절학회지

Purpose@#This study compared the results of proximal and distal chevron osteotomy in patients with severe hallux valgus. Several recent studies have shown that the indications for distal metatarsal osteotomy with a distal soft-tissue procedure could be extended to include severe hallux valgus. @*Materials and Methods@#This study analyzed 127 severe hallux valgus surgeries. Of these, 76 patients (76 feet) were excluded for lack of adequate follow-up and additional procedures (Akin procedure), leaving 51 patients (51 feet) in the study. The mean age of the patients was 58 years (21~83 years), and the mean follow-up duration was 18 months (12~32 months). The patients were divided into two groups. Group 1 underwent distal chevron osteotomy, and group 2 underwent proximal chevron osteotomy performed sequentially by a single surgeon. The patients were interviewed for the American Orthopaedic Foot and Ankle Society (AOFAS) score before and one year after surgery. The anteroposterior weight-bearing radiography of the foot was taken before and one year after surgery. @*Results@#There were no significant differences in pain and function after one year in either group. Both groups experienced significant pain reduction and an increase in the AOFAS score. Significant improvement of the hallux valgus and intermetatarsal angle corrections was observed in both groups, and the sesamoid position was similar in each group. More improvement in radiographic correction of intermetatarsal angle was noted in group 2. Both procedures gave similar good clinical and radiological outcomes. @*Conclusion@#This study suggests that a distal chevron osteotomy with a distal soft-tissue procedure is as effective and reliable a means of correcting severe hallux valgus as a proximal chevron osteotomy with a distal soft-tissue procedure.

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.

Arthroscopically-Assisted Reduction and Internal Fixation of Intra-Articular Fractures of the Lateral Tibial Plateau / 대한정형외과학회잡지

PURPOSE: To evaluate the results of tibial lateral plateau fractures using arthroscopic-assisted reduction and internal fixation without cortical window or bone grafts. MATERIALS AND METHODS: From March 2009 to March 2017, 27 patients with Schatzker type II tibial plateau fractures with articular depression and displacement over 5 mm on a computed tomography (CT) scan, who were treated with arthroscopic reduction and internal fixation and followed-up for at least 18 months, were enrolled in this study. Under arthroscopic guidance, the depressed fracture fragment was reduced using a freer and fixed with 5.0 or 6.5 mm cannulated screws through the inframeniscal portal without a cortical window or bone graft. The clinical and radiological results were evaluated using a Rasmussen system. Second look arthroscopy was performed in thirteen patients during the implant removal operation. RESULTS: All fractures healed completely with a mean union time of 8.7 weeks (range from 8 to 12 weeks). Twenty four patients had good to excellent clinical results and 25 patients had good to excellent radiological results according to the Rasmussen classification. A well-healed articular surface with fibrocartilage was also found in 13 cases with second look arthroscopy. The 8 cases on CT scan at outpatient department follow-up showed bone union without bone grafting. CONCLUSION: Arthroscopic-assisted fixation of tibial lateral plateau fractures is a useful method without a cortical window or bone graft that produces good clinical results.

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.

Calcaneal Apophyseal Avulsion Fractures with Achilles Tendon Rupture in a 10-Year-Old Patient: A Case Report / 대한족부족관절학회지

Calcaneal apophysitis is a relatively common disease in young athletes. On the other hand, if not treated properly, it can lead to apophyseal avulsion fracture in rare cases. In the case of apophyseal avulsion fractures, it is often necessary to remove or preserve the bone fragment, which often requires a suture of the Achilles tendon. A 10-year-old badminton athlete visited the outpatients' clinic with pain in both heels from 10 months ago without any trauma history. After conservative therapy, the pain in the left heel was relived but the right heel pain persisted. After 10 months of conservative therapy, the patient visited the outpatients' clinic showing a calcaneal apophyseal avulsion fracture with a total rupture of the Achilles tendon. In the operation room, a bone fragment needed to be removed because of its poor viability and the fragment was too thin for fixation. After removing the bone fragment, the ruptured Achilles tendon was fixed with an anchor system.

Epileptic nystagmus in a patient with a cavernous angioma

Epileptic nystagmus(EN) refers to recurrent attacks of nystagmus caused by a cortical seizure activity. There have been a few reports of EN associated with stroke and tumor. But EN associated with a cavernous angioma has never been reported. We report, therefore, clinical, electroencephalographic, radiologic and pathologic findings of a patient with EN associated with a cavernous angioma.