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  1. Article ; Online: Application of extended ulnar parametacarpal perforator free flap for the reconstruction of total pulp defect of the thumb: A case report.

    Usami, Satoshi / Sonoki, Kentaro / Inami, Kohei / Murakami, Kyoichi

    Microsurgery

    2024  Volume 44, Issue 4, Page(s) e31180

    Abstract: Many procedures are available for the coverage of thumb pulp defects; however, to gain thumb function and esthetics, a similar tissue is desirable. If the length of the longitudinal defect is <2 cm, a volar advancement flap is appropriate; however, if ... ...

    Abstract Many procedures are available for the coverage of thumb pulp defects; however, to gain thumb function and esthetics, a similar tissue is desirable. If the length of the longitudinal defect is <2 cm, a volar advancement flap is appropriate; however, if the flap is >2 cm long or wider, retrograde or free flaps are required. Here, we present a case of thumb pulp reconstruction using an extended ulnar parametacarpal perforator (UPM) flap, which achieved excellent functional and esthetic outcomes. A 46-year-old man underwent reconstruction surgery of his thumb, which was a degloved total pulp. A sensate 5.2 × 3.2 cm UPM flap was designed on the ulnar side of the right palm and transferred to his thumb. The flap donor site was covered with a V-Y advancement flap on the dorsal side of the right hand. At 12 months postoperatively, the patient achieved a functional and natural thumb appearance with high satisfaction. The UPM flap can offer soft tissue similar to the pulp region in the digit without a palm scar at the donor site. This extended application is suitable for the reconstruction of a total pulp defect of the digit and is an alternative option for a hemi-pulp flap from the toe area.
    MeSH term(s) Humans ; Male ; Thumb/surgery ; Thumb/injuries ; Middle Aged ; Perforator Flap/transplantation ; Perforator Flap/blood supply ; Plastic Surgery Procedures/methods ; Free Tissue Flaps/transplantation
    Language English
    Publishing date 2024-04-24
    Publishing country United States
    Document type Case Reports
    ZDB-ID 605524-2
    ISSN 1098-2752 ; 0738-1085
    ISSN (online) 1098-2752
    ISSN 0738-1085
    DOI 10.1002/micr.31180
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1570: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Efficacy of Minimally Invasive Ulnar Superficialis Slip Resection for Unfavourable Results after Trigger Finger Release.

    Usami, Satoshi / Kawahara, Sanshiro / Inami, Kohei / Sonoki, Kentaro / Takemitsu, Masashi

    The journal of hand surgery Asian-Pacific volume

    2024  Volume 29, Issue 1, Page(s) 24–28

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Humans ; Trigger Finger Disorder/diagnosis ; Finger Joint/surgery ; Contracture/surgery ; Fingers ; Arthralgia
    Language English
    Publishing date 2024-02-01
    Publishing country Singapore
    Document type Journal Article
    ZDB-ID 2848651-1
    ISSN 2424-8363 ; 2424-8355
    ISSN (online) 2424-8363
    ISSN 2424-8355
    DOI 10.1142/S2424835524500048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5911: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (2.OG)
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  3. Article: Assessing the effect of N-oxidation on the mutagenicity of 1-pyrazolines using the Ames assay.

    Inami, Keiko / Miura, Motofumi / Yoshida, Masafumi / Mochizuki, Masataka

    Toxicology research

    2023  Volume 12, Issue 3, Page(s) 503–506

    Abstract: ... ...

    Abstract N
    Language English
    Publishing date 2023-05-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2684701-2
    ISSN 2045-4538 ; 2045-452X
    ISSN (online) 2045-4538
    ISSN 2045-452X
    DOI 10.1093/toxres/tfad036
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  4. Book ; Online: Loss Function Considering Dead Zone for Neural Networks

    Inami, Koki / Yamane, Koki / Sakaino, Sho

    2024  

    Abstract: It is important to reveal the inverse dynamics of manipulators to improve control performance of model-based control. Neural networks (NNs) are promising techniques to represent complicated inverse dynamics while they require a large amount of motion ... ...

    Abstract It is important to reveal the inverse dynamics of manipulators to improve control performance of model-based control. Neural networks (NNs) are promising techniques to represent complicated inverse dynamics while they require a large amount of motion data. However, motion data in dead zones of actuators is not suitable for training models decreasing the number of useful training data. In this study, based on the fact that the manipulator joint does not work irrespective of input torque in dead zones, we propose a new loss function that considers only errors of joints not in dead zones. The proposed method enables to increase in the amount of motion data available for training and the accuracy of the inverse dynamics computation. Experiments on actual equipment using a three-degree-of-freedom (DOF) manipulator showed higher accuracy than conventional methods. We also confirmed and discussed the behavior of the model of the proposed method in dead zones.

    Comment: 6 pages, 6 figures, Accepted at AMC2024
    Keywords Computer Science - Robotics ; Computer Science - Artificial Intelligence ; Computer Science - Machine Learning
    Subject code 629
    Publishing date 2024-02-01
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Dural-based large B-cell lymphoma masquerading as a tentorial meningioma.

    Inami, Kasumi / Tsutsumi, Satoshi / Hashizume, Akane / Yamataka, Motoki / Sugiyama, Natsuki / Ueno, Hideaki / Ishii, Hisato

    Radiology case reports

    2024  Volume 19, Issue 5, Page(s) 1661–1665

    Abstract: A 53-year-old woman presented with a 2-week history of headache and vertigo. Computed tomography revealed a hyperdense tumor, measuring 30 × 31 × 36 mm in diameter, in the anteromedial parts of the cerebellar hemispheres. Cerebral magnetic resonance ... ...

    Abstract A 53-year-old woman presented with a 2-week history of headache and vertigo. Computed tomography revealed a hyperdense tumor, measuring 30 × 31 × 36 mm in diameter, in the anteromedial parts of the cerebellar hemispheres. Cerebral magnetic resonance imaging 10 days later revealed an apparent extra-axial tumor with broad attachment to the medial tentorium cerebelli and rapid growth to a diameter of 40 × 41 × 46 mm. Cerebral angiography revealed no obvious feeding vessels or tumor stains. The patient underwent biopsy through the left occipital transtentorial route. The histological appearance was consistent with diffuse large B-cell lymphoma. Intracranial lymphoma may present as a dural tumor that mimics a meningioma. Rapid tumor growth incongruous with benign meningiomas should be assumed to be possible lymphoma, and prompt biopsy should be performed.
    Language English
    Publishing date 2024-02-13
    Publishing country Netherlands
    Document type Case Reports
    ZDB-ID 2406300-9
    ISSN 1930-0433
    ISSN 1930-0433
    DOI 10.1016/j.radcr.2024.01.058
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Idiopathic thoracic spinal cord herniation into the vertebra progressing for 3 years.

    Yamataka, Motoki / Tsutsumi, Satoshi / Inami, Kasumi / Sugiyama, Natsuki / Ueno, Hideaki / Ito, Masanori / Ishii, Hisato

    Radiology case reports

    2024  Volume 19, Issue 6, Page(s) 2260–2263

    Abstract: A 43-year-old, previously healthy man experienced a decreased sensation in the left lower extremity without preceding spinal trauma. At presentation, the patient exhibited slight motor weakness in the left lower extremity, in addition to decreased pain ... ...

    Abstract A 43-year-old, previously healthy man experienced a decreased sensation in the left lower extremity without preceding spinal trauma. At presentation, the patient exhibited slight motor weakness in the left lower extremity, in addition to decreased pain sensation below the ipsilateral T7. Spinal magnetic resonance imaging (MRI) revealed abnormal findings consistent with idiopathic thoracic spinal cord herniation (ITSCH) at the T5/6 level. Computed tomography (CT) revealed a small vertebral erosion at the lower T5. The patient's symptoms gradually progressed over the next 3 years. MRI revealed marked lateral elongation of the cord at the T5/6 and apparent intravertebral cord herniation. The patient underwent ITSCH reduction through T5-6 laminectomies. The herniated cord was vertically long with a bulbous rostral part. Successful ITSCH reduction was achieved and the patient's postoperative course was uneventful. ITSCH is a progressive pathology that requires prompt surgical reduction. Certain ITSCHs may be complicated by intravertebral cord herniation.
    Language English
    Publishing date 2024-03-19
    Publishing country Netherlands
    Document type Case Reports
    ZDB-ID 2406300-9
    ISSN 1930-0433
    ISSN 1930-0433
    DOI 10.1016/j.radcr.2024.02.091
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Reconstructive Timing of Nail Preserved Fingertip Injury With Reverse Digital Artery Island Flap.

    Usami, Satoshi / Kawahara, Sanshiro / Inami, Kohei / Hirase, Yuichi

    Hand (New York, N.Y.)

    2022  Volume 18, Issue 6, Page(s) 1012–1018

    Abstract: Background: This study aimed to compare the outcomes of reverse digital artery island flap (RDAIF) in primary and secondary reconstruction after failed replantation or composite graft method.: Methods: This study retrospectively analyzed 42 patients ... ...

    Abstract Background: This study aimed to compare the outcomes of reverse digital artery island flap (RDAIF) in primary and secondary reconstruction after failed replantation or composite graft method.
    Methods: This study retrospectively analyzed 42 patients that underwent RDAIF (18 primary and 24 secondary). Preoperative details (demographics, injury details, and waiting days) and postoperative outcomes (active arc of proximal interphalangeal [PIP] and distal interphalangeal (DIP) joints, extension loss of PIP, flexion arc of metacarpophalangeal joint, total active motion, flap sensation, the presence of numbness, Tinel's sign and cold intolerance) were evaluated. Quick Disabilities of the Arm, Shoulder, and Hand score (Quick-DASH) and patient satisfaction were also statistically compared between the 2 groups.
    Results: There was no significant difference in patient demographics between the 2 groups in sex, age, smoking and diabetic history, affected hand and finger, injury type and level, and flap area. The only difference was in waiting days. Similar sensory recovery and patient satisfaction were found in both groups. Range of motion in the DIP and PIP joints, extension loss of PIP, total active motion, and Quick-DASH were superior in the primary coverage group. Increasing age, subzone III injury, and secondary reconstruction were found to be the factors that adversely affected the postoperative range of motion.
    Conclusions: Secondary reconstruction was more likely to result in joint contracture. In the event of a damaged fingertip amputation in older patients, primary flap reconstruction should be considered as the initial treatment of choice, with regard to the ultimate range of motion.
    MeSH term(s) Humans ; Aged ; Finger Injuries/surgery ; Retrospective Studies ; Amputation, Traumatic/surgery ; Surgical Flaps/blood supply ; Ulnar Artery/surgery
    Language English
    Publishing date 2022-03-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2277325-3
    ISSN 1558-9455 ; 1558-9447
    ISSN (online) 1558-9455
    ISSN 1558-9447
    DOI 10.1177/15589447221081863
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6820: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Identifying Predictors of Radiographic Distal Phalangeal Nonunion After Fingertip Replantation.

    Usami, Satoshi / Kawahara, Sanshiro / Inami, Kohei / Hirase, Yuichi / Mori, Hiroki

    The Journal of hand surgery

    2022  Volume 49, Issue 3, Page(s) 279.e1–279.e7

    Abstract: Purpose: This study aimed to estimate the risk factors for distal phalangeal nonunion in cases involving Kirchner wire fixation after successful fingertip replantation.: Methods: This study retrospectively analyzed 116 digits of 111 patients, ... ...

    Abstract Purpose: This study aimed to estimate the risk factors for distal phalangeal nonunion in cases involving Kirchner wire fixation after successful fingertip replantation.
    Methods: This study retrospectively analyzed 116 digits of 111 patients, including 74 and 42 digits with replantation in Tamai zones I and II, respectively. Univariate and multivariable analyses were performed to assess the influences of 15 independent variables on nonunion, including age, sex, medical history of diabetes mellitus, history of smoking, injured hand and digit, injury type (clean, blunt, and crush-avulsion), amputation type (complete or incomplete), length of the distal bone fragment (mm), fracture type (simple or comminuted), presence of a bone defect, length of the fracture gap after fixation (mm), number of Kirchner wires used, evidence of venous repair, and the occurrence of pin tract infections after fixation.
    Results: At 12 months after replantation, 100 digits showed bony union and 16 (13.8%) digits showed radiographic nonunion or equivalent complications, including 9 digits with asymptomatic nonunion without a secondary operation, 5 that underwent an additional operation for nonunion or a complication, and 2 with distal bone resorption. A multivariable analysis indicated that the postfixation fracture gap was the only significant predictor influencing nonunion (odds ratio, 3.30; 95% confidence interval, 1.92-5.68).
    Conclusions: The extent of the postfixation fracture gap had the greatest influence on preventing distal phalangeal nonunion, indicating the importance of reducing the fracture gap in primary fixation as much as possible.
    Type of study/level of evidence: Prognostic IV.
    MeSH term(s) Humans ; Retrospective Studies ; Amputation, Traumatic/diagnostic imaging ; Amputation, Traumatic/surgery ; Finger Injuries/diagnostic imaging ; Finger Injuries/surgery ; Replantation ; Fingers/surgery ; Fractures, Bone
    Language English
    Publishing date 2022-08-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605716-0
    ISSN 1531-6564 ; 0363-5023
    ISSN (online) 1531-6564
    ISSN 0363-5023
    DOI 10.1016/j.jhsa.2022.06.028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1431: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  9. Article: Combination Therapy Involving Ear Cartilage Transfer and Suture-Button Suspension Arthroplasty for Symptomatic Thumb Carpometacarpal Joint Arthritis.

    Usami, Satoshi / Inami, Kohei

    Journal of wrist surgery

    2019  Volume 8, Issue 2, Page(s) 157–160

    Abstract: We describe the short-term outcomes of combination therapy involving ear cartilage transfer and suture-button suspension arthroplasty for the treatment of symptomatic thumb carpometacarpal joint arthritis. The concept is to reduce joint arthritis by ... ...

    Abstract We describe the short-term outcomes of combination therapy involving ear cartilage transfer and suture-button suspension arthroplasty for the treatment of symptomatic thumb carpometacarpal joint arthritis. The concept is to reduce joint arthritis by separate independent approaches, which are renewing the damaged joint surface of the trapezium and first metacarpal bone suspension. Autologous ear cartilage is a desirable material for joint resurfacing arthroplasty without postoperative synovitis or infection, and it is expected to prevent bone impingement or recurrent joint arthritis when postoperative suture-button slack or failure unfortunately occurs.
    Language English
    Publishing date 2019-01-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2678060-4
    ISSN 2163-3924 ; 2163-3916
    ISSN (online) 2163-3924
    ISSN 2163-3916
    DOI 10.1055/s-0038-1676961
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Large arachnoid granulation protruding into the transverse sinus: A probable cause of intermittent otologic symptoms.

    Yoshida, Kohei / Tsutsumi, Satoshi / Inami, Kasumi / Sugiyama, Natsuki / Ueno, Hideaki / Ishii, Hisato

    Radiology case reports

    2023  Volume 18, Issue 10, Page(s) 3421–3424

    Abstract: A 69-year-old woman suffered attacks of hearing disturbance and vertigo for seven years. Her otologic and ophthalmological examinations did not show any significant findings. Cerebral magnetic resonance imaging revealed a cystic mass in the left ... ...

    Abstract A 69-year-old woman suffered attacks of hearing disturbance and vertigo for seven years. Her otologic and ophthalmological examinations did not show any significant findings. Cerebral magnetic resonance imaging revealed a cystic mass in the left cerebellar convexity. Computed tomography demonstrated a contrast defect of the distal left transverse sinus. Magnetic resonance imaging revealed a cyst protruding into the transverse sinus, and enlarging in the supine. Cerebral angiography demonstrated a congestive venous flow in the left transverse sinus, at the upstream of the cyst. At rest, the venous sinus pressure was 13 cm H2O at the upstream of the cyst and 8 cm H2O at the downstream. When the patient held a breath, the upstream pressure increased to 37 cm H2O, while the maximal downstream pressure was 22 cm H2O. A large AG protruding into the cranial dural sinus may cause intermittent venous congestion and associated otologic symptoms. Movements accompanied by a transient decrease in cardiac venous return and changes in head position can attribute to an enlargement of such AG.
    Language English
    Publishing date 2023-07-22
    Publishing country Netherlands
    Document type Case Reports
    ZDB-ID 2406300-9
    ISSN 1930-0433
    ISSN 1930-0433
    DOI 10.1016/j.radcr.2023.07.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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