1.Proposal of a new indicator of hip compensation for spinopelvic–hip mismatch: a retrospective study in Japan
Ryo FUJITA ; Kohei TAKAHASHI ; Ko HASHIMOTO ; Kazuyoshi BABA ; Kenichiro YAHATA ; Takahiro ONOKI ; Takashi AKI ; Keisuke ISHIKAWA ; Toshimi AIZAWA
Asian Spine Journal 2025;19(6):967-977
Methods:
A total of 209 patients with osteoporosis and 54 with adult spinal deformities were included. Patients were divided into two groups based on pelvic incidence–lumbar lordosis (PI–LL): <20° and ≥20° groups. The sagittal vertical axis (SVA), thoracic kyphosis, PI, pelvic tilt (PT), LL, sacral slope, and pelvic femoral angle (PFA) were measured. Health-related quality of life (HRQOL) was assessed in 86 patients using the Japanese Orthopedic Association Back Pain Evaluation Questionnaire (JOABPEQ). A new index, PFA–(PI–LL), was defined as spinopelvic–hip mismatch. Correlation coefficients were calculated for each radiographic parameter, and the coefficient of determination (R2) for the relationship of each parameter with SVA was evaluated in both groups. The correlations between SVA, PT, PI–LL, PFA–(PI–LL), and JOABPEQ domain scores were also analyzed.
Results:
PI–LL correlated with PFA in the PI–LL <20° group (r=0.56, p<0.001) but not in the PI–LL ≥20° group. Among all parameters, PFA–(PI–LL) demonstrated the strongest association with SVA, indicating its superior ability to explain variations in sagittal alignment in both groups and across all patients (all patients, R2=0.77). Significant correlations were observed between the radiographic parameters and JOABPEQ scores across all domains.
Conclusions
PFA–(PI–LL), which represented spinopelvic–hip mismatch, was a reliable indicator of hip compensatory function in terms of anterior trunk inclination and HRQOL.
2.New Staged Repair of Neonatal Tetralogy of Fallot with Severe Absent Pulmonary Valve Syndrome
Hiroo Kinami ; Kiyozo Morita ; Yoshihiro Ko ; Gen Shinohara ; Kazuhiro Hashimoto
Japanese Journal of Cardiovascular Surgery 2015;44(2):97-102
Primary repair of the tetralogy of Fallot with absent pulmonary valve syndrome (TOF/APV) is associated with high mortality rates of 17-33%, especially in neonates. Our standard strategy involves a staged repair with a first palliation, performed during the neonatal period, that includes main pulmonary septation with an ePTFE patch, pulmonary arterioplasty for reduction of vascular dilation, and a modified Blalock-Taussig shunt. We performed successful repairs on two neonates with TOF/APV, one symptomatic and the other non-symptomatic, with this strategy. Case 1 : A 7-day-old boy had TOF/APV, with progressively worsening respiratory distress. His left bronchi, superior vena cava and left atrium were compressed by a dilated pulmonary artery, which was repaired by emergency surgery. Decreasing the diameter of the pulmonary artery (PA index from 2,550 to 525) relieved the compressed organs. Case 2 : A 16-day-old boy with TOF/APV with a main pulmonary artery that increased in diameter from 8 to 17 mm in the course of a single day. He was treated in the same fashion as Case 1. At 1 year of age, an intracardiac repair with tricuspid anuuloplasty was performed successfully. This strategy is much safer than a primary repair and is a good choice for neonatal repair of TOF/APV.
3.A Successful Surgical Treatment of Ebstein's Anomaly by Hetzer's Procedure in an Adult
Mitsutaka Nakao ; Kiyozou Morita ; Yoshihiro Ko ; Takayuki Abe ; Kazuhiro Hashimoto
Japanese Journal of Cardiovascular Surgery 2014;43(4):195-199
A 29-year-old woman, who had been diagnosed with Ebstein's anomaly associated with paroxysmal supraventricular tachycardia due to Wolff-Parkinson-White (WPW) syndrome, was referred to our hospital for treatment of congestive heart failure and tachycardia. She had undergone a catheter ablation for WPW syndrome at the age of 28 years. Subsequently, surgical treatment for Ebstein's anomaly was indicated because of persistent symptoms of heart failure due to tricuspid regurgitation (TR). The echocardiogram and pathologic findings corresponded to Ebstein's anomaly of the Carpentier type B classification, with severe displacement of the septal and posterior leaflets resulting in moderate TR. A mobile anterior leaflet of sufficient size without a cleft enabled us to successfully perform Hetzer's procedure. In this procedure, the large mobile anterior leaflet was approximated to the opposing true tricuspid annulus with a mattress suture of 3-0 polypropylene passed from the anterior leaflet annulus to the true tricuspid annulus at the site of atrialized right ventricle near the coronary sinus. The postoperative course was uneventful, and the cardiothoracic ratio reduced from 56% to 48% with mild TR. In this adult case of Carpentier's type B adult Ebstein's anomaly, Hetzer's procedure allowed reconstruction of the tricuspid valve mechanism of “leaflet-to-septum” coaptation at the level of the true annulus by approximating the anterior leaflet. This was, effective in reducing the patient's moderate TR. We conclude that this procedure is a simple and reproducible method for repairing the tricuspid valve in Ebstein's anomaly, especially for cases with a large mobile anterior leaflet.
4.Modified Konno Operation for Aortic Valve Regurgitation after Arterial Switch Operation
Ken Nakamura ; Kiyozou Morita ; Yoshihiro Ko ; Katsushi Kinouchi ; Kazuhiro Hashimoto ; Hiromi Kurosawa
Japanese Journal of Cardiovascular Surgery 2007;36(2):72-75
We describe a case of postoperative aortic valve regurgitation (AR) after arterial awitch operation (ASO) successfully managed by the modified Konno procedure. A 4-year-old girl with complete transposition of the great arteries (TGA, Type II) had undergone the ASO (LeCompte maneuver) at 10 days of age. Because of progression of moderate AR 4 years after ASO, the modified Konno procedure with aortic valve replacement (SJM 21mm) was successfully performed. She remains in good clinical condition at the last follow-up at 5 years.
5.Role of 16-Slice Multi-Detector Row Computed Tomography in Surgical Management of Congenital Heart Disease
Ken Nakamura ; Kiyozou Morita ; Yosihiro Ko ; Yoko Matsumura ; Katsushi Kinouchi ; Kazuhiro Hashimoto
Japanese Journal of Cardiovascular Surgery 2006;35(4):198-204
Preoperative evaluation of cardiac anatomy is essential to determine the correct surgical procedure for congenital heart disease. Multi-detector row CT (MDCT) is a useful alternative imaging modality to cardiac catheterization and echocardiography. Sixteen patients (12 with total anomalous pulmonary venous return (TAPVR) and 4 with aortic arch anomalies) underwent 16-slice multi-detector row CT scanning. Three-dimensional reconstruction by MDCT was useful to determine the type of TAPVR and the presence of pulmonary venous obstruction (PVO) in TAPVR patients, as well as to detect postoperative PVO in patients who underwent intracardiac repair. In 2 patients who had asplenia associated with TAPVR III and I a, MDCT enabled an intra-atrial approach for TAPVR repair by precise preoperative determination of the relationship between the common PV chamber and single atrium. In patients with aortic arch anomalies, MDCT was useful to determine the type of anomaly, the presence of arch hypoplasia, and any associated rare vascular anomalies (including isolated subclavian artery, and the right-sided descending aorta with left aortic arch). In conclusion, MDCT provides reliable preoperative evaluation of pulmonary venous return and aortic arch anatomy, and therefore is extremely useful for surgical management of congenital heart disease.
6.A Case of Aortopulmonary Window after Balloon Angioplasty for Bifurcation Pulmonary Stenosis Based on the Jatene Procedure
Ken Nakamura ; Kiyozou Morita ; Yoshihiro Ko ; Katsushi Kinouchi ; Kazuhiro Hashimoto
Japanese Journal of Cardiovascular Surgery 2006;35(4):205-209
A 6-month-old baby boy had undergone the Jatene procedure at 4 days. Four months later, catheter intervention (balloon angioplasty) was performed because of severe stenosis at the bifurcation of the pulmonary arteries. Twenty days later, several episodes of cyanosis occurred and he was readmitted. The existence of shunt flow between the sinus of valsalva and the pulmonary bifurcation was detected by echocardiography and examination by 16-row MDCT revealed 2 holes at this site. Under a diagnosis of aortopulmonary (AP) window, the patient was placed on cardiopulmonary bypass and the pulmonary artery was opened after aortic clamping. There was a ridge between the bifurcation of the pulmonary arteries. After removing it, 2 holes were visualized that resembled the findings on 16-row MDCT. These holes were closed with Xenomedica patches and the main pulmonary artery was also extended with a Xenomedica patch. AP window is a rare complication after balloon angioplasty for pulmonary stenosis, but we must take great care to prevent this complication.
7.A Case of Mycotic Aneurysm of the Pulmonary Artery with Pulmonary Artery Fistula following Pulmonary Artery Banding
Yoshihiro Ko ; Kiyozo Morita ; Yoko Matsumura ; Katsushi Kinouchi ; Ken Nakamura ; Kazuhiro Hashimoto
Japanese Journal of Cardiovascular Surgery 2006;35(5):292-294
A 9-month-old boy who had been given a diagnosis of double outlet right ventricle (DORY), partial anomalous pulmonary venous return (PAPVR), ventricular septal defect (VSD), pulmonary hypertension (PH) and polysplenia with azygos connection, underwent pulmonary artery banding at the age of 6 months. At 2 months after surgery, a chest computed tomogram revealed a main pulmonary artery aneurysm and a main pulmonary artery-right pulmonary artery fistula caused by bacterial endocarditis due to a methicillin-resistant Staphylococcus epidermidis. We performed pulmonary arterioplasty and re-pulmonary artery banding for acute aggravation of cardiac insufficiency and obtained good results. This is an extremely rare case that was treated infectious pulmonary artery aneurysm and fistula after pulmonary artery banding.


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