Delayed Pneumothorax after Thoracic Paravertebral Block / 대한정형외과학회잡지

This paper reports a case of a patient aged 63 years who developed a delayed pneumothorax after thoracic paravertebral block (TPVB). TPVB is a non-invasive procedure that is known to be relatively safe. A 63-year-old female was admitted with back pain. TPVB T9–10 left was then performed. Two days after the procedure, she complained of dyspnea in the emergency room. X-ray showed a pneumothorax in her left side with partial left lung collapse. The pneumothorax was managed by surgical intervention, and an intercostal tube was inserted. The post-procedural X-ray showed a fully expanded lung. A chest tube was taken out after 72 hours. A delayed pneumothorax can occur after TPVB. Therefore, careful observation is required after this procedure.

Efficacy of Tranexamic Acid during Primary Total Knee Arthroplasty:Comparative Study between Intravenous Use and Topical Use / 대한정형외과학회잡지

Purpose@#This study examined the effectiveness of tranexamic acid in reducing postoperative blood loss in total knee arthroplasty by comparing the methods of administration between an intravenous group, topical group, and non-tranexamic acid group. @*Materials and Methods@#This was a retrospective case series study of patients who underwent primary total knee arthroplasty from March 2017 to February 2019 performed by a single surgeon. The study population was divided into three groups according to the method of tranexamic acid administration (Group I: intravenous group, Group II: topical group, Group III: non-tranexamic acid group). To evaluate the effectiveness of tranexamic acids, the total amount of postoperative blood loss, postoperative hemoglobin loss, and volume of red blood cell transfusion in the three groups were compared. @*Results@#The total amount of postoperative blood loss was lower in the tranexamic acid administered group than in the non-tranexamic acid group (1,366±866 ml). Among the administration methods, the intravenous group (987±449 ml) was significantly lower than the topical group (1,136±339 ml) (p=0.004). Postoperative hemoglobin loss was lower in the tranexamic acid group than the non-tranexamic acid group.Among the administration methods, the intravenous group was lower than the topical group. The transfusion rate was higher in the nontranexamic acid group (5.7%) than the tranexamic administered group. The transfusion rate of the intravenous group was 1.4%, and no patient required a transfusion postoperatively in the topical group. The number of postoperative thromboembolic events, as a complication of tranexamic acid, was similar in the three groups. @*Conclusion@#Tranexamic acid was effective in reducing postoperative blood loss after primary total knee arthroplasty compared to the nontranexamic acid administered group. No significant difference in the complications induced by tranexamic acid was observed among the three groups.

Retrospective Comparative Study of the Intraoperative Fracture Gap Compression in the Treatment of Intertrochanteric Fracture Using Proximal Femoral Nail Antirotation

Purpose@#Intertrochanteric fractures can be treated using proximal femoral nail antirotation (PFNA). This study examined the clinical and radiological results of the intraoperative fracture compression. @*Materials and Methods@#Ninety-four patients underwent intraoperative compression (Group I), and 88patients underwent natural sliding only (Group II). The patients were followed-up for more than two years. All patients met the following seven conditions: (1) AO/OTA 31-A1, A2 type intertrochanter fracture, (2) availability of compression of more than one cortical bone in the anterior or medial regionof the fracture site under the preoperative imaging test, (3) Singh index grade ≥3, (4) blade position: center-center, center-inferior, (5) tip-apex distance <25 mm, (6) reduction status of good or very good, and (7) positive or neutral medial cortical support position with slightly valgus reduction. @*Results@#A slight tendency toward significant differences in acute phase pain between the two groups was observed at six weeks postoperatively (p=0.073). Twenty-four months after surgery, lateral extension of the PFNA helical blade between the two groups showed significant differences (p=0.017). Fracture gaps measured immediately after surgery showed significant differences (p=0.001), and a clear tendency for a significant difference in the average fracture union time was found (p=0.065). @*Conclusion@#Intraoperative fracture compression, intraoperative fracture compression appears beneficial to achieve a successful union of trochanteric fractures provided that all conditions are met to apply the method safely.

Additional fixation using a metal plate with bioresorbable screws and wires for robinson type 2B clavicle fracture

Simple clavicle shaft fracture typically achieves satisfactory union after treatment and does not result in complication with conservative treatment. Non-union or malunion can occur in displaced clavicle fractures or comminuted shaft fractures. Treatment of displaced comminuted clavicle shaft fractures is performed by holding together the free fragments with interfragmentary screws or wires and fixing them to the clavicle with a plate. Therefore, we performed interfragmentary fixation using open reduction and internal fixation with bioresorbable screws (Mg-Ca alloy, Resomet Bioresorbable bone screw; U&I Corp.) and bioresorbable wires (Mg-Ca alloy, Resomet Bioresorbable K-wire and pin, U&I Corp.) for displaced comminuted clavicle fractures (Robinson type 2B) and additionally used a metal plate. We expected decreased irritation and infection due to absorption after surgery. We report four cases that were treated in this way.

Treatment of instability with scapular notching and glenoid component loosing by partial mixed different implant revision

In general, reverse shoulder arthroplasty revision is performed using the same implant for both the humerus and glenoid components. However, the authors of the present case used different implants from what was used previously for treating instability with scapular notching and glenoid aseptic loosening and report the case.

Additional fixation using a metal plate with bioresorbable screws and wires for robinson type 2B clavicle fracture

Simple clavicle shaft fracture typically achieves satisfactory union after treatment and does not result in complication with conservative treatment. Non-union or malunion can occur in displaced clavicle fractures or comminuted shaft fractures. Treatment of displaced comminuted clavicle shaft fractures is performed by holding together the free fragments with interfragmentary screws or wires and fixing them to the clavicle with a plate. Therefore, we performed interfragmentary fixation using open reduction and internal fixation with bioresorbable screws (Mg-Ca alloy, Resomet Bioresorbable bone screw; U&I Corp.) and bioresorbable wires (Mg-Ca alloy, Resomet Bioresorbable K-wire and pin, U&I Corp.) for displaced comminuted clavicle fractures (Robinson type 2B) and additionally used a metal plate. We expected decreased irritation and infection due to absorption after surgery. We report four cases that were treated in this way.

Treatment of instability with scapular notching and glenoid component loosing by partial mixed different implant revision

In general, reverse shoulder arthroplasty revision is performed using the same implant for both the humerus and glenoid components. However, the authors of the present case used different implants from what was used previously for treating instability with scapular notching and glenoid aseptic loosening and report the case.

Subscapular and Pectoralis Major Sparing Deltopectoral Approach for Reverse Total Shoulder Arthroplasty

In reverse ball shoulder replacement, surgery is usually performed using a deltopectoral approach or an anterosuperior transdeltoid approach. The deltopectoral approach is to incise the pectoralis major to upper 1/3 to 1/2, and subscapularis tendon should be removed at the lesser tuberosity of the humerus. This approach has the problem of breaking the shoulder deltoid instead of incising the rotator cuff. Therefore, we report a detailed procedure of reverse ball shoulder replacement using approach without incision of the pectoralis major muscle and subscapularis muscle.

Subscapular and Pectoralis Major Sparing Deltopectoral Approach for Reverse Total Shoulder Arthroplasty

In reverse ball shoulder replacement, surgery is usually performed using a deltopectoral approach or an anterosuperior transdeltoid approach. The deltopectoral approach is to incise the pectoralis major to upper 1/3 to 1/2, and subscapularis tendon should be removed at the lesser tuberosity of the humerus. This approach has the problem of breaking the shoulder deltoid instead of incising the rotator cuff. Therefore, we report a detailed procedure of reverse ball shoulder replacement using approach without incision of the pectoralis major muscle and subscapularis muscle.

Bioabsorbable Screws Used in Hallux Valgus Treatment Using Proximal Chevron Osteotomy / 대한족부족관절학회지

Hallux valgus is a deformity that causes pain in the first metatarsophalangeal joint. Surgical methods are quite diverse and a range of osteotomies are used at the proximal and distal part of the metatarsal bone and proximal phalange. Fixation methods, such as plate, screw, K-wire, and others have been used in various ways. The fixation device is often removed with various side effects due to the fixation devices. In the case of instruments that are absorbed in vivo, these procedures are not necessary to remove and there is an advantage of not performing the second operation. Three patients were treated, in which a proximal chevron osteotomy was used with a bioabsorbable screw (K-MET™; U&I Corporation).

Pneumocephalus after Interlaminar Lumbar Epidural Block / 대한정형외과학회잡지

Lumbar epidural block using a “loss of resistance” technique (LORT) with air can potentially cause pneumocephalus. Herein, we present a pneumocephalus that occurred after an epidural block. A 58-year-old male patient underwent an interlaminar lumbar epidural block using a LORT with air for L4–5 disc herniation. After the block, the patient complained of headache, vomiting, and truncal myoclonus. For further evaluation, a brain computed tomography was performed, and pneumocephalus was finally diagnosed. The patient underwent conservative treatment and recovered without any complications. He was discharged on the 11th day after the block.

Vascular Injury in Posterior Lumbar Spinal Surgery / 대한정형외과학회잡지

Vascular complications are uncommon, but it may pose a serious problem in posterior spinal surgery. Vascular injury during lumbar spinal surgery should be suspected if symptoms of circulatory instability are noted. If vascular injury is suspected, a contrast enhanced computed tomography should be checked and proper management, i.e., interventional treatment or surgery should be performed. To date, there have only been a few reports regarding vascular injuries during posterior lumbar spinal surgery. Clinicians should pay attention to signs of vascular injury during posterior spinal surgery, and accordingly, promptly perform treatment. In two patients with retroperitoneal hemorrhage, extravasation of the common iliac arteries was successfully repaired. One patient with pseudoaneurysm was treated by stent placement.

Management of Melorheostosis / 대한정형외과학회잡지

Melorheostosis is a very rare sclerosing bone disease with pain, joint stiffness, and limitation of motion. Its characteristic on radiography is a dense bone formation along the side of the bone, resembling the flow of candle grease. Various conservative or surgical methods have been practiced in treating pain and deformities. This is a report on the successful treatment result of six cases of melotheostosis, involving the metatarsal, metacarpal, clavicle, and tibia, which weretreated by conservative and operative treatment methods.

The Use of Locking Compression Plate for Stabilization of Existing and Impending Pathologic Fractures at Long Bones with Metastatic Cancer / 대한정형외과학회잡지

PURPOSE: The purpose of this study is to evaluate the results and the advantages of the operative treatment of metastatic pathologic fractures in long bones using locking compression plates. MATERIALS AND METHODS: Twenty-five patients (28 cases) who underwent open reduction and internal fixation with a locking compression plate with or without cement augmentation for pathologic fractures in long bones resulting from metastatic cancer between 2004 and 2013 were reviewed retrospectively. Mean age at the time of surgery was 62.8 years. Pathologic fractures occurred in 11 cases in the humerus, 11 cases in the femur, and 6 cases in the tibia. Functional analysis of Musculoskeletal Tumor Society (MSTS) scores, functional restoration condition of patients with upper extremity involvements, and interval to wheelchair ambulation in patients with lower extremity involvements was performed. Pain relief (visual analogue scale, VAS) and operation time, postoperative satisfaction with individuals, and complications were evaluated. RESULTS: Mean operation time was 81.3 minutes and mean MSTS scores were 19.8. Mean time from operation to wheelchair ambulation was 3.3 days. Mean VAS improved from 8.1 preoperatively to 2.9 at 1 week postoperatively. Most patients reported that they were more than 'satisfied' One transient radial nerve palsy and one late complication of screw breakage and reduction loss had occurred at postoperative 3 months. CONCLUSION: Internal fixation with a locking compression plate in metastatic pathologic fractures can be an effective treatment option in the meta or diaphyseal area of long bones.

Surgical Resection of Malignant Bone Tumors / 대한정형외과학회잡지

Malignant bone tumors are less common than other tumors, and we often make a misdiagnosis. However, due to its severity and prognosis we should not pass over the malignant bone tumor, because it is one of the important diseases to diagnose. Specific techniques are available for the resection and reconstruction of malignant bone tumors from the body involving extremities. In particular, it is necessary to establish guidelines for elimination of tumor cells as much as possible and minimize the malfunction. Knowledge of the staging system and guide lines for resection margin is required for treatment of malignant bone tumors.

The Alignment and Deformity of the Upper Extremity in Hereditary Multiple Exostoses / 대한골관절종양학회지

PURPOSE: This study was aimed to analyze the incidence and the anatomical distributions of HME (Hereditary Multiple Exostoses) on upper limbs and its related change in alignment of the upper limbs in HME patients. MATERIALS AND METHODS: Thirty eight patients who had been diagnosed HME between 2001 and 2009, were categorized into two groups; (1) group A (1-2 involvements); (2) group B (> or =3 involvements). We checked the carrying angle, VAS (Visual Analogue Scale), limitations in daily activities, cosmetic satisfaction according to the number of exostoses invasion. RESULTS: Among the 38 patients, 23 patients (43 cases) had exostoses in the upper limbs. The locations of exostoses in the upper limbs were proximal humerus in 33 cases (30%), distal ulna in 31 cases (28.2%), and distal radius in 24 cases (21.8%). The carrying angle of group A and B was 10.7degrees, 13.8degrees, VAS was 1.3, 3.5, and the limitations in daily activities was 7.3, 6.6 of 8 points. The cosmetic satisfactory cases were 13 and 10 cases, respectively. CONCLUSION: The deformity in upper limbs was observed in 65% of the HME patients. As the number of invasion increases, carrying angle and VAS were increased but limitations in daily activities and cosmetic satisfaction were decreased.

A Case of Nodular Regenerative Hyperplasia of Liver that mimicked Primary Biliary Cirrhosis / 대한간학회지

Nodular regenerative hyperplasia (NRH) of the liver is a rare disease that is characterized by multiple regenerative nodules in the hepatic parenchyma without fibrosis. The exact pathogenesis of NRH has not been established, but it's been suggested that obliteration of portal veins may initiate the nodular transformation. It is also known that this disease is associated with autoimmune disease, myeloproliferative disease, lymphoproliferative disease, primary biliary cirrhosis, and some chemotherapy agents. The patients with NRH are usually asymptomatic, yet if they have symptoms, the most common clinical manifestations are those of portal hypertension, including splenomegaly and esophageal varices with or without bleeding. We report a case of nodular regenerative hyperplasia that presented with clinical manifestations similar to those of primary biliary cirrhosis.