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Biomedical subjects

T Torisu

Publications and source records attributed to T Torisu.

At least 55 records · Page 3Linked to original sources
PubMed1993

[Effect of arthroplasty of the first metatarsophalangeal joint and shortening valgus osteotomy of the first metatarsus on forefoot surgery in rheumatoid arthritis].

Results of forefoot surgery with rheumatoid arthritis were evaluated in 19 feet of 11 patients. Clayton's operation was performed on 12 feet of 7 patients. The follow-up averaged 3 years and 10 months (range, 2 years and 1 month to 8 years). 1 foot (8.3%) recurred hallux valgus deformity and 3 feet (25%) recurred hammer toe deformity. But all patients complained of difficulties to push off action on the forefoot. Interpositional arthroplasty of the first metatarsophalangeal joint with shortening-valgus osteotomy through the first metatarsal base was done on 7 feet of 4 patients. The follow-up averaged 1 years and 8 months (range, 8 months to 2 years and 2 months). 2 feet recurred hammer toe deformity. But, this group had no problem to push off action on the forefoot compared with Clayton's operation. As regard the relief of pain, all patients had satisfactory results from both methods. These results clarified that the preservation for the first metatarsophalangeal joint function was superior for push off action on the forefoot.

Adult↗
PubMed1992

Human T cell leukemia virus-I carriers and gonarthrosis. A preliminary report.

Gonarthrosis in 11 human T cell leukemia virus-1 (HTLV-I) carriers were studied for sera, synovial fluids (SF) and cerebrospinal fluids (CSF). Atypical lymphocytes similar to adult T cell leukemia cells were noticed in the SF of all the HTLV-I carriers and ranged from 19 to 1%, while those of peripheral white blood cells ranged from 3 to 0%. Anti-HTLV-I antibodies in the SF were equal to or lower than those in the sera. The CSF from 7 of them demonstrated positive titers of anti-HTLV-I antibodies, while no evidence of neurological disorders manifested. The histopathological findings of synovial membranes on hematoxylin and eosin staining method showed no statistical difference between those of gonarthrosis of HTLV-I carriers and noncarriers.

Aged↗
PubMed1992

[Clinical usefulness of the measurement of type-II procollagen carboxypeptide (C-II propeptide, pColl-II-C) in synovial fluid as a marker of collagen metabolism in cartilage].

Type-II procollagen-C-peptide (pColl-II-C) in synovial fluids was studied in 319 patients with osteoarthritis (OA; 151), rheumatoid arthritis (RA; 141), traumatic arthritis (TA; 27) and 15 healthy volunteers using the newly developed ELISA kit. The mean levels of pColl-II-C in synovial fluids of healthy controls, OA, TA, and RA were 0.3 +/- 0.1 ng/ml, 5.9 +/- 0.3 ng/ml, 6.8 +/- 1.4 ng/ml and 1.1 +/- 0.1 ng/ml, respectively. pColl-II-C levels in synovial fluids of OA and TA were significantly higher compared to those of healthy controls and RA. It was also demonstrated that pColl-II-C levels could reflect the quantitative and qualitative change of cartilage metabolism. Therefore, the quantification of this molecule in synovial fluid could be beneficial to know the synthetic activity of type II collagen of chondrocytes, since pColl-II-C is a part of the precursor molecule of type II collagen.

Adolescent↗
PubMed1991

[Roentgenographical evaluation of physiological bow-leg and the infantile type of Blount's disease in children].

Roentgenographical examinations were carried out in 41 joints of 22 cases with physiological bowleg and 7 joints of 5 cases with the infantile type of Blount's disease. The observation periods were from 1 year and 4 months to 8 years and 1 month with an average of 4 years and 2 months. The femorotibial angle, the proximal tibial metaphyseal diaphyseal angle, the distal tibial metaphyseal diaphyseal angle and the tibial metaphyseal metaphyseal angle were measured, and evaluated statistically. The measurement of the proximal tibial metaphyseal diaphyseal angle and the tibial metaphyseal metaphyseal angle were more significant than that of the femorotibial angle for early differentiation of the infantile type of Blount's disease from physiological bowleg. The degree and it's change of the distal tibial metaphyseal diaphyseal angle show no difference between physiological bowleg and the infantile type of Blount's disease.

Age Factors↗
PubMed1990

[Intra-articular rheumatoid nodules of the knee joint].

Intra-articular rheumatoid nodules found in 6 knee joints of 4 patients with rheumatoid arthritis were reported with histological findings. All patients were women, ranging in age from 32 to 61 years, with 6 to 41-year history of rheumatoid arthritis. The masses were exclusively in the anterolateral aspect of the joint. Snapping occurred when the joint was flexed by 20 degrees in four joints and by 60 degrees in two. The masses had the sizes of a thumb tip to index-finger tip, and were elastic and soft. Histologic examination of the masses revealed the typical formation of rheumatoid nodule in two joints. Myxomatous degeneration and granulation tissue consistent with rheumatoid arthritis were found in two joints. Perivascular fibrosis and myxomatous degeneration were mainly demonstrated in two joints which had developed masses two months before excision.

Adult↗
PubMed1990

Use of bipolar hip arthroplasty in states of acetabular deficiency.

Bipolar hip arthroplasty was performed on 557 hips from December 1980 to June 1988. The clinical results and serial roentgenograms of 37 hips with acetabular deficiency, treated by arthroplasty from December 1980 to June 1983, were followed for a minimum of five years. The longest follow-up period was seven years and six months after the operation. The clinical score was assessed by the hip rating score of the Japanese Orthopaedic Association, which assigns a maximum of 100 points. The preoperative clinical score ranged from 24 to 56 points (mean, 42.2 points). The postoperative score improved to a range of 71-100 points (mean, 82.7 points). Of 37 hips examined, 31 hips were pain-free. As measured from the serial roentgenograms after the operation, the overall distance of central migration of the prosthesis in 37 hips was 0-5 mm, with an average of 1.4 mm, two years after the operation. At the five-year follow-up evaluation, 27 of 37 hips showed no additional central migration. The overall distance of superior migration of the prosthesis in 37 hips was from 0 to 8 mm, with an average of 2.6 mm, two years after the operation. Additional superior migration was noticed in 18 of 37 hips (48.6%) at the time of this five-year follow-up evaluation.

Acetabulum↗
PubMed1989

Ultrastructural study of articular cartilage in experimental pyogenic arthritis.

Ultrastructural changes of the articular cartilage at the early stage of experimental pyogenic arthritis were studied by electron microscopy. The superficial zone of the cartilage at the site of the cartilage-synovium junction demonstrated far more changes than those at the site of the free surface of the articular cartilage. Changes were observed at the cartilage-synovium junction as early as four hours after the intraarticular injection of the infecting organism. The most interesting finding was migration of erythrocytes and polymorphonuclear leucocytes into the superficial zone of the cartilage at the early stage. The pericellular matrix in the middle zone became so loose in some areas that collagen fibrils were partially exposed after three days. The naked collagen fibrils were tapered, nicked and irregular in size after seven days.

Animals↗
PubMed1989

Bipolar hip arthroplasty in rheumatoid arthritis.

Bipolar hip arthroplasty with bone grafting was performed on 25 joints with rheumatoid arthritis from 1981 to 1985. The results and roentgenographical progress of the grafted bone were followed for a minimum of two years, the longest follow-up examination occurring six years after the operation. The clinical score was assessed by the hip rating score of the Japanese Orthopaedic Association, which assigns a maximum of 100 points. The preoperative clinical score ranged from 22 to 59 points (mean, 42.6). The postoperative score improved to a range of 65-92 points (mean, 72.8). Of 24 hips examined, 21 (87.5%) were painless. As measured serially from the roentgenograms made immediately after the operation, the overall distance of central migration in 24 hips was 0-8.5 mm (average, 2.7 mm). The overall distance of superior migration in 24 hips was 0-10 mm (average, 3.7 mm). A single massive bone graft using extracted femoral head was considered to be better than bone fragments as the procedure for acetabular reconstruction during bipolar hip arthroplasty in rheumatoid arthritis.

Adult↗
PubMed1989

The lateral approach compared with the volar approach for exposure of the hook of the hamate.

Two cases of delayed union of the hook of the hamate were satisfactorily treated by excisional surgery. The volar surgical approach through the palm is common, but to expose the hook some hypothenar muscles and cardinal ligaments must be divided. Care must be taken to avoid injury of the motor and sensory branches of the ulnar nerve that occur close to the hook. The lateral approach between the abductor digiti minimi muscle and the fifth metacarpal bone is easier and less traumatic. This approach is also safer for the ulnar neurovascular bundle, which is protected by volar retraction and the hypothenar muscles. The lateral approach is advantageous unless the injury is complicated by ulnar nerve palsy or flexor tendon injury.

Carpal Bones↗
PubMed1986

Treatment of secondary osteoarthritis and rheumatoid arthritis by Bateman hip prosthesis.

The Bateman hip prosthesis was applied in reconstruction of secondary osteoarthritis and rheumatoid arthritis. Forty-five joints that could be followed up for 45-18 months (mean 26 months) were clinically and roentgenographically re-examined. Forty joints (90.0%) were painless. The clinical score improved from the preoperative mean of 44.8 to the postoperative mean of 87. In 34 patients with secondary osteoarthritis, postoperative protrusion of the outer head into the acetabulum reconstructed by excavation of the previous shallow, steep architecture was only 0.8 mm (mean). Postoperative protrusion of the outer head into the acetabulum reconstructed by bone grafting was only 2.0 mm (mean) in 11 patients with rheumatoid arthritis. Roentgenograms revealed the appearance of sclerosis supermedially in the excavated acetabulum 4-6 months after the operation. This sclerotic change expanded in the entire area of contact with the outer head in 36 of 45 joints within about 1 year. Once the sclerosis had spread completely, the outer head stopped protruding into the acetabulum. A computerized simulation experiment with a rigid spring model demonstrated that central displacement of the outer head can be avoided if the continuity between the sclerosis in the articular surface of the reconstructed acetabulum and the lateral wall is restored for transmission and dispersion of the resultant head force toward the lateral wall as in normal hip joints; this verified the clinical findings.

Acetabulum↗
PubMed1986

Roentgenographic evaluation of geometric total knee arthroplasty with a six-year average follow-up period.

The geometric total knee prosthesis was used in the reconstruction of 70 damaged knee joints in 56 patients from November 1973 through March 1979. The average follow-up period extended to six years and seven months. Eleven patients had died and four could not be located. Eighty-one percent of the remaining knees had little or no pain at the time of the review. Pain in the patellofemoral joints was an insignificant problem in this series. The femorotibial shaft angle ranged from 0 degrees to 10 degrees of valgus in 43 (82.7%) of 52 knees. Six knees showed varus deformity at the time of follow-up examination. Stress fracture of the medial condyle of the tibia was found in two of these six knees. The absence of a radiolucent zone at the tibial cement-bone interface was noted in only ten (19.2%) of the 52 knee roentgenograms. New formation or progression of a radiolucent zone from six to 12 months after the operation was found in 36.5%. Positional abnormality of the marker wires seen in serial roentgenograms existed in 51.9% of the knees. Nine knees (17.3%) disclosed a gap between the metallic articular surface and the tibial component and also showed the collision of the tibial intercondylar eminence against the femur in the standing position. The tibial component of the prosthesis was fractured in one knee.

Adult↗
PubMed1984

[Geometric total knee arthroplasty--follow-up for an average of six years].

Geometric total knee prosthesis was applied for reconstruction of 70 destructive knee joints in 56 patients from November 1973 through March 1979. The average follow-up period extended to six years and seven months. Eleven patients had died and four could not be located. Eighty-one percent of the remaining arthroplasties disclosed little or no pain at the time of the review. Pain in the patellofemoral joints was an insignificant problem in this series. The absence of radiolucent zone at the tibial cement-bone interface was noted in only 20.4% of the roentgenograms. New formation or progression of radiolucent zone after six months was found in 36.7%. Displacement of the marker wires seen in serial roentgenograms existed in 51.0% of the knees. The tibial component was fractured in one patient.

Adult↗
PubMed1983

A new instrument for closed irrigation-suction treatment.

Orthopedic surgeons are often faced with the surgical complication of fulminating deep wound infection and bone and joint infection after complicated fractures. Two hundred and seventy patients were treated for bone and joint infection by closed irrigation-suction from 1970 to 1982. Obstruction of the drainage tube, solution leakage, and post-operative bleeding were the knotty problems. Our new instrument for irrigation-suction treatment resolved these problems. The instruments consists of a suction pump, a channel changer, and a double tube system.

Adult↗
PubMed1983

Utilization of the extensor retinaculum in the radiocarpal joint of rheumatoid wrists.

Synovectomy and debridement were combined with use of pedicled flaps of the extensor retinaculum as interposition material in the radiocarpal joint to cover the eroded articular surfaces of the radius and ulna in rheumatoid wrists. The technique was devised for the purpose of preventing postoperative osseous ankylosis of the radiocarpal joint. Results were satisfactory in 13 of 17 wrists operated on during the period from 1974 to 1979 and followed up for 38 to 84 months (average, 61 months).

Adult↗
PubMed1981

[Roentgenographical examination on the tilted angle of the scapula in the resting position (author's transl)].

Roentgenographical examination was carried out in 56 normal subjects ranging from 12 to 80 years of age with the purpose of evaluating the degrees of the tilted angle of the scapula in three dimensions at the relaxed standing position. Bilateral roentgenograms of shoulder were taken in the standard antero-posterior position and at the 30 degrees of oblique projections. Five landmarks were selected on each roentgenogram and measured by X and Y coordinates. The degrees of tilted angles of the scapula in three dimension was determined by using the specific equations. Average angle of medial tilt of the scapula was 32.1 degrees (+/0 7.0 degrees) in the right and 31.9 degrees (+/- 8.0 degrees) in the left respectively. Average angle of the medial tilt of the scapula in both sexes was 29.9 degrees (+/- 7.7 degrees) in males and 34.0 degrees (+/- 6.5 degrees) in females. The average angle of medial tilt of the scapula tended to decrease in accordance with the aging process. Average angle of downward tilt of the scapula was 11.5 degrees (+/- 12.5 degrees) in the right and 12.3 degrees (+/- 11.1 degrees) in the left respectively. Average angle of the downward tilt of the scapula in both sexes was 12.9 degrees (+/- 12.7 degrees) in males and 10.8 degrees (+/- 10.7 degrees) in females. The average angle of downward tilt of the scapula statistically increased in accordance with age (r = 0.34). Average angle of upward rotation of the scapula was increased in accordance with the aging process. It was suggested that the restricted rotation of the scapula was one the major causes of the restricted abduction of the shoulder in the aged.

Adolescent↗