Evaluation of the physical fitness level of children and adolescents must include consideration of individual growth rates. This study evaluates the relationship between height and physical fitness in a large sample of 6-17 yr students. Physical fitness test scores were calculated for every 1 cm height group and used to generate quadratic regression equations. Physical fitness data reported by the Ministry of Education, Culture, Sports, Science and Technology in Japan (MEXT) were compared with estimated values obtained using our regression equations. The differences between the values reported by MEXT and our estimated values were very small. Comparison of physical fitness T-scores calculated based on school grade averages with T-scores based on means calculated using our regression equations indicated that shorter height students had lower T-scores if school grade averages were used for the calculation. In conclusion, in elementary and junior high school students, it is important to evaluate physical fitness level relative to individual physical growth.

We investigated muscle activities of the scapular muscles during low row procedure (LR) usually used 12 weeks after a rotator cuff repair, and evaluated its effective application period comparing with scapular retraction procedure (SR) used for early postoperative period. Twelve healthy adults (mean age, 26.8 years) were enrolled in the current study. %MVICs (maximal voluntary isometric muscle contractions) of middle trapezius, lower trapezius, serratus anterior, posterior deltoid, and infraspinatus were calculated from the surface electromyography during both LR and SR. The %MVIC of either the middle trapezius or lower trapezius was not significantly different between during the LR and the SR. The %MVIC of the serratus anterior, posterior deltoid and infraspinatus during the LR was significantly higher than those during the SR (p=0.018, p<0.001, p<0.001, respectively). Additionally, the %MVIC of the posterior deltoid and infraspinatus in the SR was less than 20%. In training phase after rotator cuff repair, LR was considered to be effective procedure for most of the scapular muscles 12 weeks after a surgical repair of the rotator cuff. However, LR earlier than 12 weeks after the surgery is considered to yield a risk of re-tear of the rotator cuff, and SR may be a preferred training procedure in this early phase.

A 74-year-old man undergone mitral valve plasty. After cessation of cardiopulmonary bypass, bleeding persisted from the cardioplegia injection site and dilatation of the ascending aorta with discoloration was observed. The diagnosis of type A aortic dissection extending to the descending aorta was made by transesophageal echocardiogram. Replacement of the ascending aorta was performed under deep hypothermic circulatory arrest. The postoperative course was uneventful. The false lumen of the aortic arch and descending aorta was thrombosed completely on postoperative computed tomography. Intraoperative aortic dissection is a rare but fatal complication of cardiopulmonary bypass. Prompt recognition and appropriate surgical management are of prime importance.

Osaka City has the highest tuberculosis (TB) notification rates in Japan. In the period 1999–2003, the TB control programme was strengthened, and the Stop TB Strategy was implemented to reduce the number of notified cases. The objective of this study was to assess the effect of these control activities in Osaka City, including the implementation of directly observed treatment (DOT), by analysing TB surveillance and routinely collected data. We reviewed the surveillance data of all sputum smear-positive pulmonary tuberculosis (PTB) cases registered in the Osaka City Public Health Office from 2001 to 2008 and data collected from the routine TB programme. The DOT implementation rate increased from 0% in 2001 to 68% in 2008 for smear-positive PTB cases of the general public and to 61% for all PTB cases of the homeless. The proportion of smear-positive PTB cases that had treatment failure and default combined, declined from 8.0% (52 of 650) in 2001 to 3.6% (20 of 548) in 2006. The proportion of cases among the homeless with previous treatment declined from 28% in 2001 to 15% in 2008. The proportion of cases with multidrug resistant-TB (MDR-TB) among those without previous treatment declined from 1.7% in 2001 to 0.9% in 2008. It is logical that reduction in the failure and default rate would lead to the reduction of cases with previous treatment and TB transmission, including resistant TB, therefore to the reduction of MDR-TB rates.

［Purpose］This study aimed to evaluate the differences in the immediate postoperative muscle strength around the hip and knee joints, joint range of motion, pain, and mobility between the anterolateral-supine (AL-S) approach, as a form of minimally invasive total hip arthroplasty (THA), and the posterior approach (PA), as a form of small-incision THA.

［Methods］The subjects were 68 patients with hip osteoarthritis who underwent unilateral THA for the first time. Maximal isometric muscle strength around the hip and knee joints, joint range of motion, walking ability, and pain were measured before surgery, and on Day 10, Day 21, and 2 months after surgery.

［Results］Significant interactions were found between the time and the type of surgery for hip abduction, external rotation, and extension strength. Interaction was also found between the surgical approach and the time required to achieve optimal hip extension range of motion.

［Conclusion］The differences in the functional recovery after AL-S approach and PA were most likely caused by differences in muscle damage. Therefore, it is necessary to customize rehabilitation programs according to the characteristics of each approach.

In order to reduce the blood transfusion volume in open heart surgery, the new blood autotransfusion technique using cardiotomy reservoir unit BCR 3538, which was configured to serve also as a receptacle for postoperative mediastrinal drainage, was introduced. To investigate the utility and the problem in this system, every clotting factor, platelets' function and the extent of the hemolysis were measured serially both in patients' arterial blood and the shed mediastinal blood. The bank blood transfusion was significantly reduced to 250ml±330ml by this system compared to the 1080ml±820ml in the cases of usual system (p<0.01). Every clotting factor recovered well in patients' arterial blood after cardiopulmonary bypass (CPB). In the reservoir blood, the clotting factor IX, XI, XII were extremely suppressed at 1h CPB, and 3h after the CPB, every clotting factor except fibrinogen (42±28mg/dl) showed the quite higher activity, such as factor VIII 400%, IX 365%, XI 72%, XII 267%. Namely, the anticoagulability of the reservoir blood was maintained due to the effect of the residual heparin at 1h after the CPB, and due to the contact defibrinogation of the shed mediastinal blood at 3h after CPB. The free hemoglobin level was extremely high on the reservoir blood at 3h after CPB. In 6 cases, the autologous blood retransfusion was abandoned by clott formation in the unit because of the contamination of the intraoperatively used fibrin glue. From this study, the autologous blood transfusion using cardiotomy reservoir BCR 3538 was useful not only for saving the transfusion of the bank blood but also the hemostasis after CPB. But to reduce the hemolysis in this system, and to establish the safety against the other clotting material such as fibrin glue were the problems which should be resolved in future. I appreciate the kind support of Alexander von Humboldt Foundation for this study.

This report documents a case of three-channeled aortic dissection. The diagnosis of dissecting aneurysm was made by chest X-P and CT to 70-year-old man, with a chief complaint of back pain. Aortogram showed aortic aneurysm (DeBakey type IIIb), which had an entry at distal of the beginning of the left subclavian artery. Though we had given a pressure control therapy, the patient died on the 5th day of the admission. At autopsy, a new dissection was found in the chronic dissecting outer wall, forming three channeled dissection and rupture was there. Three-channeled dissection is very rare, only 8 cases including ours have been reported so far. From this case, we learned it very difficult to diagnose and treat it.

We studied the effects of granulocytic elastase (GEL) and fibronectin (FN) on the coagulation and fibrinolytic system when using cardiopulmonary bypass (CPB). Blood sampling was performed before CPB (Pre), just after CPB (Post) the 1st postoperative day (PD1) and the second postoperative day (PD2). Laboratory parameters were GEL, FN, fibrinogen (Fib), prothrombin time (PT), fibrin degradation products (FDP), D dimer (D-D), α2 plasmin inhibitor plasmin complex (PIC) and antithrombin III (AT III). The level of GEL was highest and that of FN was lowest at Post. The levels of Fib, PT and AT III were lowest and that of PIC was highest just after CPB. The levels of FDP and D-D were highest on PD1. The levels of GEL and D-D correlated just after CPB and on PD1 and PD2. The level of GEL correlated with that of PIC on PD1. These results demonstrated that the level of FN decreased with CPB. And it was expected that CPB time affected the level of GEL. The levels of GEL affects D-D and PIC which are fibrinolysic factors particularly related to secondary fibrinolysis.