Temporary 12-Hour Drain Clamping versus 3-Hour Drain Clamping in Simultaneous Bilateral Total Knee Arthroplasty

Background@#Total knee arthroplasty (TKA) is a procedure that has a risk of perioperative blood loss and allogeneic blood transfusion. The purpose of the present study was to compare the perioperative blood loss and transfusion rate between the 3-hour interval clamping and 12-hour interval clamping of closed suction drainage after simultaneous bilateral total knee arthroplasty (SBTKA). @*Methods@#A total of 122 SBTKAs were enrolled in this retrospective study. A 3-hour clamping protocol was applied in 53 SBTKAs and a 12-hour clamping protocol was applied in 69 SBTKAs. The amount of perioperative blood loss, transfusion requirements, postoperative hemoglobin and hematocrit levels, the lowest hemoglobin and hematocrit levels during hospitalization, readmission within 90 days, and clinical outcomes were compared between the 3-hour clamping group and the 12-hour clamping group. @*Results@#The 12-hour clamping group had fewer patients requiring transfusion (26.1%, 18/69) than did the 3-hour clamping protocol group (49.1%, 26/53) (p = 0.008). The 12-hour clamping group had a lower amount of estimated blood loss (1,426.9 ± 421.5 mL) than did the 3-hour clamping protocol group (1,882.1 ± 445.6 mL) (p < 0.001). The 12-hour clamping group showed higher hemoglobin and hematocrit levels (both p < 0.001) on postoperative day 5 than did the 3-hour clamping group. The lowest hemoglobin and hematocrit levels were higher in the 12-hour clamping group than in the 3-hour clamping group (p = 0.039 and p = 0.016, respectively). Within 1 postoperative month, there were 2 cases of wound dehiscence in each group (p = 0.585). But, at 1 year after the operation, no serious complications occurred in the two groups. @*Conclusions@#Compared to the 3-hour clamping protocol, the 12-hour clamping protocol significantly reduced transfusion requirements, estimated blood loss volume, and hemoglobin and hematocrit levels after SBTKA. We suggest that 12-hour temporary clamping should be considered for reducing transfusion rates.

Investigation for Shoulder Kinematics Using Depth Sensor-Based Motion Analysis System / 대한정형외과학회잡지

Purpose@#The purpose of this study was to analyze the motion of the shoulder joint dynamically through a depth sensor-based motion analysis system for the normal group and patients group with shoulder disease and to report the results along with a review of the relevant literature. @*Materials and Methods@#Seventy subjects participated in the study and were categorized as follows: 30 subjects in the normal group and 40 subjects in the group of patients with shoulder disease. The patients with shoulder disease were subdivided into the following four disease groups: adhesive capsulitis, impingement syndrome, rotator cuff tear, and cuff tear arthropathy. Repeating abduction and adduction three times, the angle over time was measured using a depth sensor-based motion analysis system. The maximum abduction angle (θmax ), the maximum abduction angular velocity (ωmax ), the maximum adduction angular velocity (ωmin ) , and the abduction/adduction time ratio (tabd / tadd ) were calculated. The above parameters in the 30 subjects in the normal group and 40 subjects in the patients group were compared. In addition, the 30 subjects in the normal group and each subgroup (10 patients each) according to the four disease groups, giving a total of five groups, were compared. @*Results@#Compared to the normal group, the maximum abduction angle (θmax ), the maximum abduction angular velocity (ωmax ), and the maximum adduction angular velocity (ωmin ) were lower, and abduction/adduction time ratio (tabd /tadd ) was higher in the patients with shoulder disease. A comparison of the subdivided disease groups revealed a lower maximum abduction angle (θmax ) and the maximum abduction angular velocity (ωmax ) in the adhesive capsulitis and cuff tear arthropathy groups than the normal group. In addition, the abduction/adduction time ratio (tabd /tadd ) was higher in the adhesive capsulitis group, rotator cuff tear group, and cuff tear arthropathy group than in the normal group. @*Conclusion@#Through an evaluation of the shoulder joint using the depth sensor-based motion analysis system, it was possible to measure the range of motion, and the dynamic motion parameter, such as angular velocity. These results show that accurate evaluations of the function of the shoulder joint and an in-depth understanding of shoulder diseases are possible.

Drug-induced Hyperprolactinemia Results in Atypical Atypical Fracture / 대한고관절학회지

We report a case of bilateral femur fracture which may have resulted in part from long-term administration of antipsychotic agents. A 43-year-old female patient with pain in both thighs visited our clinic. We conducted Xray and magnetic resonance imaging (MRI) examinations which revealed bilateral femur fractures. The right proximal femur had a complete fracture, and the left proximal femur had an incomplete fracture, both of which were in the subtrochanteric area. The patient was treated by intramedullary nailing in the right femur. Laboratory analysis showed hyperprolactinemia and hypogonadism. Bone mineral density analysis showed osteoporosis. Antipsychotic drug-induced hyperprolactinemia is a well-known phenomenon. Despite concerns about hyperprolactinemia induced osteoporotic fracture in patients treated with only prolactin-elevating medications, the issue has not been extensively studied. If hyperprolactinemia patients suffer from uncontrolled pain, we recommend MRI examination as surgeons should be aware of the possibility of osteoporotic fracture induced by hyperprolactinemia.

Treatment of Neglected Proximal Interphalangeal Fracture Dislocation Using a Traction Device: A Case Report

This paper reports the use of a traction device for the treatment of neglected proximal interphalangeal fracture dislocations. A 44-year-old man with a fracture dislocation of a right ring finger proximal interphalangeal joint was admitted 17 days after the injury. Closed reduction and external fixation were performed using a dynamic traction device and C-arm under a brachial plexus block. Passive range of motion exercise was started after two weeks postoperatively and active range of motion exercise was started after three weeks. The traction device was removed after five weeks. No infection occurred during the traction period. No subluxation or displacement was observed on the X-ray taken two months postoperatively. The active range of motion of the proximal interphalangeal joint was 90°. The patient was satisfied with the functional result of the treatment with the traction device. The dynamic traction device is an effective treatment for neglected fracture dislocations of the proximal interphalangeal joint of a finger.

In vivo 3-dimensional Kinematics of Cubitus Valgus after Non-united Lateral Humeral Condyle Fracture

BACKGROUND: Nonunion of lateral humeral condyle fracture causes cubitus valgus deformity. Although corrective osteotomy or osteosynthesis can be considered, there are controversies regarding its treatment. To evaluate elbow joint biomechanics in non-united lateral humeral condyle fractures, we analyzed the motion of elbow joint and pseudo-joint via in vivo three-dimensional (3D) kinematics, using 3D images obtained by computed tomography (CT) scan. METHODS: Eight non-united lateral humeral condyle fractures with cubitus valgus and 8 normal elbows were evaluated in this study. CT scan was performed at 3 different elbow positions (full flexion, 90° flexion and full extension). With bone surface model, 3D elbow motion was reconstructed. We calculated the axis of rotation in both the normal and non-united joints, as well as the rotational movement of the ulno-humeral joint and pseudo-joint of non-united lateral condyle in 3D space from full extension to full flexion. RESULTS: Ulno-humeral joint moved to the varus on the coronal plane during flexion, 25.45° in the non-united cubitus valgus group and −2.03° in normal group, with statistically significant difference. Moreover, it moved to rotate externally on the axial plane −26.75° in the non-united cubitus valgus group and −3.09° in the normal group, with statistical significance. Movement of the pseudo-joint of fragment of lateral condyle showed irregular pattern. CONCLUSIONS: The non-united cubitus valgus group moved to the varus with external rotation during elbow flexion. The pseudo-joint showed a diverse and irregular motion. In vivo 3D motion analysis for the non-united cubitus valgus could be helpful to evaluate its kinematics.

Risk Factors for Wound Infection in Spinal Surgery: A Focus on Diabetes Mellitus / 대한척추외과학회지

STUDY DESIGN: Retrospective study. OBJECTIVES: To identify risk factors for infection after spinal surgery. SUMMARY OF LITERATURE REVIEW: Infection after spinal surgery is relatively uncommon. However, such infections cause serious consequences and increased costs and sequelae. Risk factors for infection after spinal surgery include a posterior approach, instrumentation, the use of an allogenic bone graft, transfusion, and a long operating time. Patient-related factors include diabetes and obesity. MATERIALS AND METHODS: From January 2009 to December 2013, 350 patients who underwent surgery at our hospital due to spinal disease, including 10 patients with a postoperative spinal infection, were evaluated. We investigated patients' age, gender, morbidity due to diabetes mellitus, body mass index, level of surgery, approach, location, instrumentation, and operation type. RESULTS: Ten of the 350 patients developed a spinal infection after surgery. The proportion of diabetic patients among the infected patients was higher than among the non-infected patients, although the difference was not statistically significant. Additionally, the proportion of diabetic patients with hemoglobin A1c levels greater than 7.0% was higher among the infected patients. Operating time, the surgical approach, drain tube insertion, transfusion, and the use of an allogenic bone graft were not significantly different between the infected and non-infected patient groups. CONCLUSIONS: Uncontrolled diabetes is the most important risk factor for the development of spinal infection after surgery. Therefore, in order to prevent infection after surgery, blood glucose should be controlled before surgery.

Risk Factors for Wound Infection in Spinal Surgery: A Focus on Diabetes Mellitus

OBJECTIVES@#To identify risk factors for infection after spinal surgery.SUMMARY OF LITERATURE REVIEW: Infection after spinal surgery is relatively uncommon. However, such infections cause serious consequences and increased costs and sequelae. Risk factors for infection after spinal surgery include a posterior approach, instrumentation, the use of an allogenic bone graft, transfusion, and a long operating time. Patient-related factors include diabetes and obesity.@*MATERIALS AND METHODS@#From January 2009 to December 2013, 350 patients who underwent surgery at our hospital due to spinal disease, including 10 patients with a postoperative spinal infection, were evaluated. We investigated patients' age, gender, morbidity due to diabetes mellitus, body mass index, level of surgery, approach, location, instrumentation, and operation type.@*RESULTS@#Ten of the 350 patients developed a spinal infection after surgery. The proportion of diabetic patients among the infected patients was higher than among the non-infected patients, although the difference was not statistically significant. Additionally, the proportion of diabetic patients with hemoglobin A1c levels greater than 7.0% was higher among the infected patients. Operating time, the surgical approach, drain tube insertion, transfusion, and the use of an allogenic bone graft were not significantly different between the infected and non-infected patient groups.@*CONCLUSIONS@#Uncontrolled diabetes is the most important risk factor for the development of spinal infection after surgery. Therefore, in order to prevent infection after surgery, blood glucose should be controlled before surgery.

Should We Check the Routine Postoperative MRI for Hematoma in Spinal Decompression Surgery?

BACKGROUND: A postoperative magnetic resonance imaging (MRI) is performed as a routine to assess decompression of the spinal cord as well as to evaluate postoperative complications. The purpose of this study is to analyze the efficacy of postoperative MRI for hematoma in spinal decompression surgery. METHODS: Between January 1, 2008 and January 31, 2015, 185 patients who underwent postoperative MRI after spinal decompression surgery were included in this study. We checked the history of the use of an anticoagulant or antiplatelet agent, withdrawal period, blood platelet count, and prothrombin time (international normalized ratio [INR]). We measured the total amount of suction drainage and duration until removal. We retrospectively reviewed the presence of hematoma and thecal sac compression. Postoperative prognosis was evaluated by a visual analog scale (VAS) and the Oswestry Disability Index (ODI). RESULTS: Hematomas were found on postoperative MRI scans in 97 out of 185 patients (52.4%). Thirty patients had a thecal sac compressing hematoma: 7 in the cervical spine, 1 in the thoracic spine, and 22 in the lumbar spine. The occurrence of hematoma did not show significant difference according to the use of an anticoagulant (p = 0.157). The blood platelet count, prothrombin time (INR), and suction drainage duration did not have a statistically significant correlation with the occurrence of hematoma (p = 0.562, p = 0.506, and p = 0.429, respectively). The total amount of suction drainage was significantly different according to the presence of hematoma (p = 0.022). The total 185 patients had a significant decrease in the postoperative VAS score (p < 0.001), and the diminution of VAS score was not significantly different according to the occurrence of hematoma (p = 0.243). Even in the cases of thecal sac compressing hematoma, the reduction of VAS score was not significantly different (p = 0.689). CONCLUSIONS: Postoperative MRI for hematoma in spinal decompression surgery has little effect on prognosis or management. Therefore, indiscriminate postoperative MRI should be avoided and MRI should be performed depending on the patient's status.

Management of Blood Loss in Hip Arthroplasty: Korean Hip Society Current Consensus / 대한고관절학회지

The volume of hip arthroplasty is stiffly increasing because of excellent clinical outcomes, however it has not been shown to decrease the incidence of transfusions due to bleeding related to this surgery. This is an important consideration since there are concerns about the side effects and social costs of transfusions. First, anemia should be assessed at least 30 days before elective hip arthroplasty, and if the subject is diagnosed as having anemia, an additional examination of the cause of the anemia should be carried and steps taken to address the anemia. Available iron treatments for anemia take 7 to 10 days to facilitate erythropoiesis, and preoperative iron supplementation, either oral or intravenous, is recommended. When using oral supplements for iron storage, administer elemental iron 100 mg daily for 2 to 6 weeks before surgery, and calculate the dose using intravenous supplement. Tranexamic acid (TXA) is a synthetic derivative of the lysine component, which reduces blood loss by inhibiting fibrinolysis and clot degradation. TXA is known to be an effective agent for reducing postoperative bleeding and reducing the need for transfusions in primary and revision total hip arthroplasties. Patient blood management has improved the clinical outcome after hip arthroplasty through the introduction and research of various agents, thereby reducing the need for allogeneic blood transfusions and reducing the risk of transfusion-related infections and the duration of hospitalizations.

Analysis of the Korean Orthopedic In-Training Examination: The Hip and Pelvis Section / 대한고관절학회지

PURPOSE: The purpose of this study was to analyze the questions in the hip and pelvis section of the Korean Orthopaedic In-Training Examination (KOITE). MATERIALS AND METHODS: We analyzed all KOITE questions pertaining to hip and pelvis surgery between 2010 and 2014. A thorough analysis of the contents was performed after categorizing as tested topics, imaging modalities used, taxonomic classification, and recommended references. We also analyzed the scores of the hip and pelvis section of the KOITE. RESULTS: Seventy-five of five-hundred questions (weight, 15.0%) were related to the hip and pelvis. Trauma including fracture and dislocation (26/75, 34.7%) was asked more commonly than disease and basics. The description-only questions (65/75, 86.7%) were the most frequently asked. According to taxonomic classification, taxonomy 3 (decision; 39/75, 52.0%) was most frequently asked. Campbell's Operative Orthopedics (52/75, 69.3%) was the reference that covered most of the questions. CONCLUSION: This analysis of the hip and pelvis section of KOITE could be used for resident training programs in teaching hospitals.

Perioperative Blood Loss in Intramedullary Hip Screw for Intertrochanteric Fracture: Analysis of Risk Factors

PURPOSE: We compared visible blood loss and calculated blood loss after intramedullary fixation in intertrochanteric fracture, and evaluated correlation between blood loss and its risk factors. MATERIALS AND METHODS: A total of 256 patients who underwent closed reduction and intramedullary fixation in femoral intertrochanteric fracture between 2004 and 2013 were enrolled in this study. The total blood loss was calculated using the formula reported by Mercuiali and Brecher. We analyzed several factors, including fracture pattern (according to Evans classification), gender, age, body mass index (BMI), anesthesia method, cardiovascular and cerebrovascular disease, preoperative anemia, American Society of Anesthesiologists (ASA) score and use of antithrombotic agents. RESULTS: Total calculated blood loss (2,100+/-1,632 ml) differed significantly from visible blood loss (564+/-319 ml). In addition, the blood loss of unstable fracture patient was 2,496+/-1,395 ml and multivariate analysis showed a significant relationship between blood loss and fracture pattern (p<0.01). However, other factors showed no statistically significant difference. CONCLUSION: Total calculated blood loss was much greater than visible blood loss. Patients with unstable intertrochanteric fracture should be treated with care in order to reduce blood loss.

Simultaneous Bilateral Fracture of Femoral Neck in Korea: A Case Report / 대한고관절학회지

Unilateral femoral neck factures are common and their incidence is increasing. However, simultaneous bilateral femoral neck fractures are rare. Although cases of simultaneous bilateral femoral neck fractures have been reported, most were caused by strong muscle contractions during electroconvulsive therapy. Simultaneous bilateral femoral neck fractures caused by a simple fall are an extremely rare injury; therefore, limited literature is available, and no case has been reported in Korea. We report herein a case of simultaneous bilateral femoral neck fractures caused by a simple fall. An 83-year-old woman visited the emergency department with bilateral hip joint pain and gait disturbance, which developed 1 day after a fall. Tenderness and severe limitation in left hip joint range of motion and mild limitation in right hip joint range of motion were observed on a physical examination. A Garden type IV femoral neck fracture in the left hip joint and a Garden type I femoral neck fracture in the right hip joint were observed on plain radiography. She underwent right screw fixation and left bipolar hemiarthroplasty 2 days after admission. The patient could walk using a walker 4 weeks postoperatively. Bone union in the right femoral neck was observed at the 3 month follow-up. No specific findings were observed at the left hip hemiarthroplasty site.

Regional Bone Loss as a Risk Factor for Distal Radius Fracture in Women under 60 Years Old / 대한골다공증학회지

OBJECTIVES: Some studies have suggested that lumbar spine and hip bone mineral density (BMD) are not associated with distal radius fractures (DRF), and a few studies have investigated regional BMDs at the fracture site, not just the lumbar or hip. We correlated distal radius BMD with DRF in postmenopausal women or =50 years old with DRF were enrolled in the fracture group, and 72 women without fractures were included as a control group. We measured distal radius BMD in the distal radius contralateral to the fractured bone in the fracture group and that of the lumbar body 5 days after the trauma. BMDs at the distal radius of each group were compared in three age groups (50~59, 60~69, and > or =70 years). Age- and site-specific BMDs were analyzed in each group. RESULTS: No significant differences in the rate of osteoporosis at the distal radius or lumbar spine were observed in patients > or =60 years old. However, BMD and T-score values of the distal radius in female patients were lower than those in controls <60 years old. BMD and T-score values of the distal radius were lower than those of the lumbar spine in the fracture group <60 years old. BMD of the distal radius also carried a higher relative risk. CONCLUSIONS: Low BMD of the distal radius was an indicator of regional BMD and could be a sensitive risk factor for DRF in women <60 years.

Association between BMI (Body Mass Index) and Proximal Femur Fractures Type in Korean People / 대한골다공증학회지

OBJECTIVES: The purpose of this analysis is to study whether the factors including bone mineral density (BMD) and age which influence fracture occurrence is involved in proximal femur fracture type. Any correlation of body mass index (BMI) and obesity to fractures of the proximal femur was investigated in particular. METHODS: Two hundred fifty two patients hospitalized for femur neck fracture and intertrochanteric fracture over 60 under 90 years old were examined. Only simple fall down trauma for excluding pathologic fractures was included. About 225 patients, past medical, drug and social history were investigated and BMD and BMI (body mass index) were measured. Patients were classified into two groups (femoral neck fracture and intertrochanteric fracture). Significant differences in BMD and BMI between these two groups were investigated. RESULTS: There was no statistically significant difference between two proximal femur fracture type with regard to age, sex and BMD. But two groups seem to have statistically significant different with BMI. Most patients had normal weight, thus no significant differences were found in degree of obesity between two groups. CONCLUSIONS: This study shows that the higher the patients have BMI, the more frequently intertrochanteric fracture is occurred. But, owing to normal obesity levels seen in most patients in this study, any definitive correlation between obesity and each type of proximal femur fracture could not be found.

Perioperative Blood Loss in Bipolar Hemiarthroplasty for Femoral Neck Fracture: Analysis of Risk Factors / 대한고관절학회지

PURPOSE: We compared visible blood loss and calculated blood loss after bipolar hemiarthroplasty in femoral neck fracture, and evaluated correlation between blood loss and its risk factors. MATERIALS AND METHODS: A total of 356 patients who underwent bipolar hemiarthroplasty in femoral neck fracture between 2004 and 2010 were enrolled in this study. The total blood loss was calculated using the formula reported by Mercuiali and Brecher. We analyzed several factors, including gender, age, body mass index (BMI), anesthesia method, cardiovascular and cerebrovascular disease, preoperative anemia, American Society of Anesthesiologists (ASA) score, use of cement, and use of antithrombotic agents. RESULTS: Total calculated blood loss(1,408+/-72 ml) differed significantly from visible blood loss(980+/-102 ml). In addition, calculated blood loss differed between risk factors(1,526+/-369 ml in cardiovascular disease, 1,588+/-279 ml in general anesthesia, 1,645+/-920 ml in obesity, and 1,605+/-439 ml in use of antithrombotic agents). CONCLUSION: Total calculated blood loss was much greater than visible blood loss. Patients with risk factors such as cardiovascular disease, obesity, use of antithrombotic agents, and general anesthesia should be treated with care in order to reduce blood loss.

Intra-articular Lesions in Chronic Lateral Ankle Instability: Comparison of Arthroscopy with Magnetic Resonance Imaging Findings

BACKGROUND: Chronic lateral ankle instability often accompanies intra-articular lesions, and arthroscopy is often useful in diagnosis and treatment of intra-articular lesions. METHODS: Preoperative magnetic resonance imaging (MRI) examinations and arthroscopic findings were reviewed retrospectively and compared in 65 patients who underwent surgery for chronic lateral ankle instability from January 2006 to January 2010. MR images obtained were assessed by two radiologists, and the inter- and intra-observer reliability was calculated. American Orthopedic Foot and Ankle Society (AOFAS) and visual analogue scale (VAS) scores were evaluated. RESULTS: Abnormalities of the anterior talofibular ligament (ATFL) were found in all 65 (100%) cases. In arthroscopy examinations, 33 (51%) cases had talar cartilage lesions, and 3 (5%) cases had 'tram-track' cartilage lesion. Additionally, 39 (60%) cases of synovitis, 9 (14%) cases of anterior impingement syndrome caused by osteophyte, 14 (22%) cases of impingement syndrome caused by fibrotic band and tissue were found. Sensitivity of MRI examination for each abnormality was: ATFL, 60%; osteochondral lesion of talus (OLT), 46%; syndesmosis injury, 21%; synovitis, 21%; anterior impingement syndrome caused by osteophyte, 22%. Paired intra-observer reliability was measured by a kappa statistic of 0.787 (95% confidence interval [CI], 0.641 to 0.864) for ATFL injury, 0.818 (95% CI, 0.743 to 0.908) for OLT, 0.713 (95% CI, 0.605 to 0.821) for synovitis, and 0.739 (95% CI, 0.642 to 0.817) for impingement. Paired inter-observer reliability was measured by a kappa statistic of 0.381 (95% CI, 0.241 to 0.463) for ATFL injury, 0.613 (95% CI, 0.541 to 0.721) for OLT, 0.324 (95% CI, 0.217 to 0.441) for synovitis, and 0.394 (95% CI, 0.249 to 0.471) for impingement. Mean AOFAS score increased from 64.5 to 87.92 (p < 0.001) when there was no intra-articular lesion, from 61.07 to 89.04 (p < 0.001) in patients who had one intra-articular lesion, and from 61.12 to 87.6 (p < 0.001) in patients who had more than two intra-articular lesions. CONCLUSIONS: Although intra-articular lesion in patients with chronic lateral ankle instability is usually diagnosed with MRI, its sensitivity and inter-observer reliability are low. Therefore, arthroscopic examination is strongly recommended because it improved patients' residual symptoms and significantly increased patient satisfaction.

Comparative Analysis of the Results of Fixed-angle versus Variable-angle Volar Locking Plate for Distal Radius Fracture Fixation

PURPOSE: To compare the outcomes of distal radius fractures in a fixed-angle volar locking plate group and variable-angle volar locking plate group. MATERIALS AND METHODS: Forty-one patients observed at least 6 months after surgery were included in this retrospective study. We used the range of motion, visual analogue scale score, Disabilities of the Arm, Shoulder and Hand Questionnaire score, and radiologic findings to measure the clinical results. RESULTS: No differences in clinical results or radiologic results were noted between the fixed-angle volar locking plate group and variable-angle volar locking plate group. CONCLUSION: We believe that it is important to minimize complications by using appropriate screws and plates according to the fracture type, though no differences in the surgical outcome were noted between the fixed-angle volar locking plate group and variable-angle volar locking plate group with distal radius fracture.

Double Dislocation of Interphalangeal Joints in a Single Digit: A Case Report

Double dislocation of the interphalangeal joints in a single digit is very rare. We describe the results of conservative treatment for the double interphalangeal dislocations of 5th finger caused by hyperextension during bicycle accident.

Association of Dietary Factors with Osteoporosis in Postmenopausal Women / 대한골다공증학회지

OBJECTIVES: The purpose of this study was to assess the association between dietary intake and osteoporosis risk in postmenopausal women. MATERIALS & METHODS: Bone mineral density was measured at the lumbar spine by dual-energy X-ray absorptiometry and a structured questionnaire was administered by a trained interviewer, which included information on sociodemo-graphics, medical and reproductive history, and dietary intake. The study sample included 134 osteoporotic and 137 non-osteoporotic women between 52 and 68 years of age. Nutrient variables were classified into tertiles. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated which compared the highest tertile with the lowest tertile as a reference group. RESULTS: ORs for osteoporosis were 1.47 (95% CI: 1.03~2.05) for total protein, 1.62 (95% CI: 0.51~3.92) for animal protein, and 2.98 (95% CI: 1.42~4.23) for sodium. ORs for osteoporosis in the highest tertile were: 0.42 (95% CI: 0.23~0.83) for vegetable protein, 0.72 (95% CI: 0.51~0.90) for Ca, and 0.65 (95% CI: 0.49~ 0.88) for Fe, relative to the respective lowest tertile. A brief food frequency questionnaire (FFQ) with 16 food items, was used in the cross-sectional survey. After adjustment for other risk factors for low bone mineral density, highest intake frequency of protein-sourced food was associated with lower risks for osteoporosis (OR: 0.57, 95% CI: 0.39~0.83, p for trend: 0.003). CONCLUSIONS: This results support that in order to prevent osteoporosis and low bone mineral density, adequate nutrient intakes are essential factors in postmenopausal women.

Lipoma Arborescens in the Hip Joint: A Case Report

Lipoma arborescens is a very rare disease in which adipocytes form a synovial villous lipoma. In addition, it has the potential for dysplastic proliferation. Hypertrophic synovial lipoma is stimulated by movement of joints, which results in joint pain, effusion, limitation of joint movement and swelling. A definite cause has not yet been proven, but trauma, rheumatic arthritis, inflammation and degenerative change are believed to be possible causes. There have been reports of lipoma arborescens in several joints, including the knee joint and elbow joint. However, it is very rare to find this disease in hip joints. In fact, only one such case has been reported in Korea. We report here on a rare case of lipoma arborescens in the hip joint along with a review of the relevant literature.