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Your search keyword '"Shirasawa, Shinichi"' showing total 19 results
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19 results on '"Shirasawa, Shinichi"'

1. Palsy of the posterior interosseous nerve treated by targeted ultrasound-guided perineural hydrodissection

Author

Tsujino Shohei, Seki Yasuhiro, Maehara Manabu, and Shirasawa Shinichi

Subjects
posterior interosseous nerve, hydrodissection, palsy, ultrasound, Medicine (General), R5-920, Medical technology, R855-855.5
Abstract

Perineural hydrodissection is a minimally invasive technique using an injection of fluid to dissect the perineural plane and tissue space. This report describes a case of palsy of the descending branch of the posterior interosseous nerve (PIN) which was recovered by targeted ultrasound-guided perineural hydrodissection. Ultrasonographic examination was performed, and multiple stenotic lesions interrupted by hyperechoic bands within the fascicles of the PIN were found. Using ultrasonography, perineural hydrodissection was performed four times every other week. Fifteen weeks after the first hydrodissection, there was no restriction in the patient’s thumb and fingers movement, and ultrasonography revealed that multiple stenotic lesions had improved. Today, surgical treatment is recommended for patients with complete nerve constriction. However, there is no standardized approach for patients with incomplete or without nerve constriction. Ultrasound-guided perineural hydrodissection is a noninvasive and easy method. This procedure could be a useful diagnostic and therapeutic modality for the management of the disease.

Published
2021
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8. Impact of orthogeriatric care management by orthopedic surgeons and physicians on in‐hospital clinical outcomes: A difference‐in‐difference analysis

Author

Ogawa, Takahisa, primary, Schermann, Haggai, additional, Khadka, Aayush, additional, Moross, Janelle, additional, Moriwaki, Mutsuko, additional, Fushimi, Kiyohide, additional, Fujiwara, Takeo, additional, Yoshii, Toshitaka, additional, Okawa, Atsushi, additional, and Shirasawa, Shinichi, additional

Published
2022
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12. Early recovery of basic mobility under femoral nerve block after hip fracture surgery – A propensity score matched pilot study

Author

Ogawa, Takahisa, Seki, Keiko, Tachibana, Tetsuya, Hayashi, Hiroto, Moross, Janelle, Kristensen, Morten Tange, Shirasawa, Shinichi, Ogawa, Takahisa, Seki, Keiko, Tachibana, Tetsuya, Hayashi, Hiroto, Moross, Janelle, Kristensen, Morten Tange, and Shirasawa, Shinichi

Abstract

Background:: Previous studies have shown better pain reduction utilizing femoral nerve block (FNB) in patients who underwent hip fracture surgery. However, few studies have focused on the recovery of physical function after FNB, and most studies excluded patients with dementia. We investigated the association between FNB performed in the operating room and the recovery of physical function after hip fracture surgery, including patients with dementia. Methods: A total of 103 patients with a mean age of 87.4 years who underwent hip fracture surgery under spinal anesthesia between July 2015 and December 2017 (46 patients receiving a single injection of FNB and 57 standard care) were enrolled. Patients with FNB versus standard care were matched by a propensity score to adjust for patient characteristics. An anesthesiologist performed FNB with 20ml of 0.2% ropivacaine, and the standard care group received intravenous 1000 mg acetaminophen or 50mg flurbiprofen once after surgery. After matching, 78 patients were analyzed. Our primary outcome was 3-day cumulated ambulation score (CAS, 0-18 points) and secondary outcomes were 1-day CAS on postoperative day 1-3 and length of hospital stay. We also stratified patient groups based on the presence of dementia and fracture type. Results: Patients undergoing FNB had significantly better 3-day CAS compared to standard care (mean [SD], 8.72 [3.42] vs 7.33 [2.62]; mean difference, 1.38 [95%CI; 0.03 - 2.74]; p = 0.048) and 1-day CAS on postoperative day two (mean [SD], 3.10 [1.39] vs 2.56 [0.94]; mean difference, 0.54 [0.01 - 1.07]; p = 0.049). Length of hospital stay did not significantly differ among the two groups (p = 0.65). Larger positive effect was likely to be seen for patients with a femoral neck fractures and for those without dementia. Conclusions: Patients who underwent surgery with spinal anesthesia plus FNB had better ambulatory status early after hip fracture surgery compared to patients not offered FNB. The benefic

Published
2021

13. Effects of different surgical procedures for meniscus injury on two-year clinical and radiological outcomes after anterior cruciate ligament reconstructions. -TMDU MAKS study

Author

Hoshino, Takashi, primary, Nakagawa, Yusuke, additional, Inomata, Kei, additional, Ohara, Toshiyuki, additional, Katagiri, Hiroki, additional, Otabe, Koji, additional, Hiyama, Kanehiro, additional, Katagiri, Kenta, additional, Katakura, Mai, additional, Ueki, Hiroko, additional, Hayashi, Masaya, additional, Nagase, Tsuyoshi, additional, Sekiya, Ichiro, additional, Ogiuchi, Takashi, additional, Muneta, Takeshi, additional, Koga, Hideyuki, additional, Hoshino, Akiho, additional, Yoshimura, Hideya, additional, Takahashi, Toru, additional, Matsumura, Etsuko, additional, Nakamura, Kaori, additional, Uomizu, Mari, additional, Tateishi, Tomohiko, additional, Shimizu, Tadanori, additional, Asano, Koji, additional, Kim, Mindae, additional, Neishin, Jyu, additional, Udo, Mio, additional, Kitahama, Jun, additional, Shirasawa, Shinichi, additional, Yanagisawa, Katsuaki, additional, Kondo, Shinpei, additional, Hatsushika, Daisuke, additional, Yuki, Arata, additional, Nakatsuru, Enichi, additional, Araya, Naoko, additional, Amemiya, Masaki, additional, An, Jae-Sung, additional, Kawata, Kazumasa, additional, Yoshihara, Aritoshi, additional, Isono, Masaaki, additional, Shimaya, Masayuki, additional, Fukagawa, Shingo, additional, Horie, Masafumi, additional, Yamaga, Mika, additional, Watanabe, Toshifumi, additional, Saito, Ryusuke, additional, and Mochizuki, Tomoyuki, additional

Published
2021
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19. Ulnar Nerve Injury Following Distal Radius Fracture Assessed by Ultrasonography: Management of an Ulnar Nerve Lesion.

Author

Tsujino S, Seki Y, Maehara M, and Shirasawa S

Subjects
Humans, Ulnar Nerve diagnostic imaging, Ulnar Nerve injuries, Ulnar Nerve surgery, Ultrasonography, Radius Fractures complications, Radius Fractures diagnostic imaging, Radius Fractures surgery, Ulna Fractures surgery, Ulnar Neuropathies diagnostic imaging, Ulnar Neuropathies etiology, Ulnar Neuropathies surgery
Abstract

A fracture of the distal radius with an associated injury to the ulnar nerve is rare. The management of the ulnar nerve lesion is unclear. We present a patient with a closed distal radius fracture related to an injury to the ulnar nerve associated with diminished sensation and a claw deformity. This was assessed by ultrasonography (US) that showed the nerve to be in continuity without any evidence of compression. The nerve was deviated towards the volar side at the distal end of the ulna and was enlarged at the same point. Open reduction and internal fixation was performed for the fracture. Emergent nerve exploration was not performed. The function of the ulnar nerve was completely restored at 16 weeks after injury. In cases presenting with ulnar nerve injury, we recommend US to evaluate the condition of the ulnar nerve. Nerve exploration should be performed when neurological deficits were found on US or symptoms did not recover over 4 months observation. Level of Evidence: Level V (Therapeutic).

Published
2022
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