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( Shuji Nakagawa ),( Yuji Arai ),( Hiroaki Inoue ),( Hiroyuki Kan ),( Manabu Hino ),( Shohei Ichimaru ),( Kazuya Ikoma ),( Hiroyoshi Fujiwara ),( Fumimasa Amaya ),( Teiji Sawa ),( Toshikazu Kubo ) 대한슬관절학회 2016 대한슬관절학회지 Vol.28 No.3
Purpose: This study compared the analgesic effects of local infiltration analgesia (LIA) and femoral nerve block (FNB) after total knee arthroplasty (TKA) and assessed factors associated with analgesia obtained by these two methods. Materials and Methods: Study subjects included 66 patients (72 knees) who underwent TKA for osteoarthritis of the knee. Pain visual analogue scale (VAS), the amount of analgesics used, number of days to achieve 90o of flexion of the knee joint, date of initiating parallel-bar walking, range of motion of the knee joint at discharge, and adverse events were investigated. Results: The VAS scores did not differ significantly between two groups, whereas the amount of analgesics used was significantly lower in the LIA group. Preoperative flexion contracture was significantly more severe in the LIA group with high VAS compared with low VAS. No serious adverse event occurred in the LIA or FNB group. Conclusions: The lower analgesic usage in the LIA group than the FNB group indicates that the analgesic effect of LIA was greater than that of singleshot FNB after TKA. There were no serious complications in either group. The postoperative analgesic effect of LIA was smaller in patients with severe than less severe preoperative flexion contracture.
Shuji Nakagawa,Yuji Arai,Kunio Hara,Hiroaki Inoue,Manabu Hino,Toshikazu Kubo 대한슬관절학회 2017 대한슬관절학회지 Vol.29 No.4
We describe a patient who underwent arthroscopic pullout fixation for a posterior cruciate ligament (PCL) avulsion fracture. A 46-year-old female, injured in a fall while riding a motorcycle, was diagnosed with a right knee PCL tibial attachment avulsion fracture and underwent arthroscopic osteosynthesis. A Kirschner wire was drilled to a point just medial to the medial border of the anterior tibial bony bed. A suture wire was folded into a loop and introduced into the posteromedial compartment via the bone tunnel. A fixation thread was inserted from the posteromedial portal, through the medial and lateral loop wires, and into the posteromedial compartment. The lateral and medial loop wires attached to the thread were pulled to the outside, and the thread was fixed onto the tibia. Three months post-surgery, she returned to her job. This procedure represents a minimally invasive method of treating avulsion fractures of the tibial attachment of the PCL.
( Hiroyuki Kan ),( Yuji Arai ),( Masashi Kobayashi ),( Shuji Nakagawa ),( Hiroaki Inoue ),( Manabu Hino ),( Shintaro Komaki ),( Kazuya Ikoma ),( Keiichiro Ueshima ),( Hiroyoshi Fujiwara ),( Toshikazu 대한슬관절학회 2017 대한슬관절학회지 Vol.29 No.1
Purpose: The fixed flexion view (FFV) of the knee is considered useful for evaluating the joint space when assessing the severity of osteoarthritis (OA) of the knee. To clarify the usefulness of FFV for evaluation of the joint space and severity of knee OA, this study evaluated changes in the joint space on the FFV and standing extended view (SEV) in patients with knee OA. Materials and Methods: The SEV and FFV images were acquired in 567 patients (1,102 knees) who visited the hospital with a chief complaint of knee joint pain. Medial joint space width (MJSW) and Kellgren-Lawrence (K-L) classification assessed using the SEV and FFV images were compared. Results: Mean MJSW was significantly smaller when assessed on the FFV than on the SEV (3.02±1.55 mm vs. 4.31±1.30 mm; p<0.001). The K-L grade was the same or higher on the FFV than on the SEV. Conclusions: The FFV is more useful than the SEV for evaluating the joint space in OA knees. Treatment strategies in patients with knee OA should be determined based on routinely acquired FFV images.
Yuichi Sato,Hirotoshi Hatori,Suguru Igarashi,Manabu Arai,Kazuki Ito,Syota Kikuchi 한국물리학회 2010 Current Applied Physics Vol.10 No.3
Cadmium telluride (CdTe) thin films were grown on sapphire c-face single-crystal substrates by vacuum evaporation. Prior to growing the CdTe thin films, conducting thin films of Ni, Mo, Ti and titanium nitride (TiN) were grown on the sapphire substrates. The crystallinities and photoluminescence (PL) properties of the CdTe thin films grown on the various conducting thin films were investigated and they were compared with those of CdTe thin films grown directly on sapphire substrates without a conducting thin film. CdTe thin films with relatively high crystallinities were obtained when Ti and TiN were used as the conducting thin film. Therefore, the PL properties of the CdTe thin films on such conducting thin films were not inferior to those of the CdTe thin film grown directly on the sapphire substrate. The effect of the Cd and Te supply ratio on the properties of the CdTe thin films was also investigated. The CdTe thin films had much higher crystallinities when they were grown in Te-rich conditions than in Cd-rich conditions.