---

	In remembrance of Mr. Taisuke Hirasawa 藤原浩芳 Peripheral Nerve 31(1): 1-2, 2020.

---

	Director retirement greetings 楠進 Peripheral Nerve 31(1): 3-4, 2020.

---

	In a special feature "occupational peripheral neuropathy" special feature 松岡雅人 Peripheral Nerve 31(1): 7-7, 2020.

---

	Metal intoxication : Lead (Pb) -induced peripheral neuropathy Masato MATSUOKA Peripheral Nerve 31(1): 8-15, 2020.

---

	Occupational peripheral neuropathies due to organic solvent exposure Susumu UENO Peripheral Nerve 31(1): 16-21, 2020.

---

	Peripheral neuropathy in the using vibrating tools Keiko OHNARI1), Kazunori IKEGAMI2), Satoshi MICHII2), Taiki SHIRASAKA2), Hajime ANDO2), Akira OGAMI2), Hiroaki ADACHI1) Peripheral Nerve 31(1): 22-29, 2020.

---

	Pathology of carpal tunnel syndrome and cubital tunnel syndrome as occupational diseases Yoshiaki YAMANAKA, Takafumi TAJIMA, Yoshitaka TSUJIMURA, Yukichi ZENKE, Akinori SAKAI Peripheral Nerve 31(1): 30-35, 2020.

---

	Peripheral nerve injuries in upper extremities following labor accidents Shingo NOBUTA Peripheral Nerve 31(1): 36-41, 2020.

---

	Antecedent infections in Fisher syndrome : Approach from clinical practice Michiaki KOGA Peripheral Nerve 31(1): 42-47, 2020.

---

	Decellularized allogeneic nerve graft wrapped with an adipose-derive stem cell sheets and a literature review Mika NAKADA1), Soichiro ITOH2), Kaoru TADA1), Tadahiro NAKAJIMA1), Masashi MATSUTA1), Hiroyuki TSUCHIYA1) Peripheral Nerve 31(1): 48-55, 2020.

---

	Could mastering robotic surgery bring paradigm shift in peripheral nerve surgery? (Report #1) Satoshi ICHIHARA1), Ayato HAYASHI1,2), Akira HARA1) Peripheral Nerve 31(1): 56-61, 2020.

---

	Plexin D1-IgG related neuropathic pain Takayuki FUJII, Ryo YAMASAKI, Yukino MIYACHI, Kyoko IINUMA, Jun-ichi KIRA Peripheral Nerve 31(1): 62-68, 2020.

---

	Characteristics of cubital tunnel syndrome of Self-Defense Forces official Masashi ISAJI1), Masatoshi AMAKO2) Peripheral Nerve 31(1): 69-73, 2020.

---

	Characterization of mechanoreceptors involving the sense of touch using the pressure-clamped single-fiber recording technique Mayumi SONEKATSU1,2), Hiroshi IWASAKI1), Shunji TSUTSUI1), Wataru TANIGUCHI1), Manabu YAMANAKA1), Hiroshi YAMADA1), Jianguo G.Gu2) Peripheral Nerve 31(1): 74-79, 2020.

---

	Clinical appearance of four idiopathic carpal tunnel syndrome patients with trans-ligamentous type of the motor branch in endoscopic carpal tunnel release surgery Aya YOSHIDA1,2), Ichiro OKUTSU2), Ikki HAMANAKA2) Peripheral Nerve 31(1): 80-84, 2020.

---

	Prognosis of the sciatic nerve lesion at the buttock Shinichi YAMAMOTO, Yoji MIKAMI Peripheral Nerve 31(1): 85-89, 2020.

---

	Investigation of 99 cases of iatrogenic peripheral nerve injury referred to our clinic specializing in peripheral neurosurgery Kenichi KAWANO, Yasuhito TAJIRI, Yukinori HARA, Junichi IIJIMA, Yohei OSHIRO Peripheral Nerve 31(1): 90-97, 2020.

---

	Clinical characteristics of 7 cases of hereditary peripheral neuropathy caused by GARS mutation Akihiro HASHIGUCHI, Akiko YOSHIMURA, Masahiro ANDO, Yujiro HIGUCHI, Tomonori NAKAMURA, Yuji OKAMOTO, Eiji MATSUURA, Hiroshi TAKASHIMA Peripheral Nerve 31(1): 98-104, 2020.

---

	Methylcobalamin attenuates inflammation after peripheral nerve injury by promoting phosphorylation of Akt in macrophages Toru IWAHASHI, Hiroyuki TANAKA, Junichi SAYANAGI, Yukio HIRAI, Taisuke KASUYA, Kunihiro OKA, Tsuyoshi MURASE Peripheral Nerve 31(1): 105-113, 2020.

---

	Evaluation of thenar atrophy in patients with carpal tunnel syndrome based on ultrasonographic measurement Issei NAGURA1), Takako KANATANI2), Yoshifumi HARADA2) Peripheral Nerve 31(1): 114-118, 2020.

---

	Subclavian artery angiography in the sitting position for diagnosis of thoracic outlet syndrome Shinji TSUCHIDA1), Hiroyoshi FUJIWARA1,2), Shogo TOYAMA1,3), Masato OHARA1), Ryo ODA1) Peripheral Nerve 31(1): 119-126, 2020.

---

	Japanese multicenter, open-label, uncontrolled clinical study of freeze-dried sulfonated human immunoglobulin for the treatment of chronic inflammatory demyelinating polyradiculoneuropathy : including the investigation of responders and non-responders Kyoichi NOMURA1), Ryuji KAJI2), Gen SOBUE3,4), on behalf of the Study Group of IVIg for CIDP in Japan Peripheral Nerve 31(1): 127-142, 2020.

---

	Nerve graft and supercharged end to side anterior interosseous nerve transfer for the treatment of traumatic high ulnar palsy Tomokazu SAWADA1), Michio SANO1), Takao OMURA2), Kaori SUGIURA2), Yukihiro MATSUYAMA2) Peripheral Nerve 31(1): 143-147, 2020.

---

	Anterior subcutaneous transposition for patients with intraneural ganglion of the ulnar nerve Shigeru KURIMOTO, Masaomi SAEKI, Katsuhiro TOKUTAKE, Hidemasa YONEDA, Taisuke NAKAGAWA, Katsuyuki IWATSUKI, Hisao ISHII, Michiro YAMAMOTO, Masahiro TATEBE, Hitoshi HIRATA Peripheral Nerve 31(1): 148-153, 2020.

---

	A case of sporadic CMT2F with HSPB1 mutation that developed as motor axonopathy and developed sensory dysfunction 17 years later Yuichiro FURUYA1), Yu HONGO1), Midori HORIUCHI1), Taro MATSUI1), Keishi YAMAZAKI1), Hiroshi TAKAZAKI1), Akihiro HASHIGUCHI2), Hiroshi TAKASHIMA2), Kenichi KAIDA1) Peripheral Nerve 31(1): 154-159, 2020.

---

	Guyon's canal syndrome caused by intraneural ganglion cyst of the ulnar nerve : A case report Keiko ONAKA1), Hirotaka OKUBO1), Masaki KINJO1), Motoko NAKASONE1), Kotaro NISHIDA1), Fuminori KANAYA2) Peripheral Nerve 31(1): 160-164, 2020.

---

	Carpal tunnel syndrome as an initial symptom of systemic amyloidosis with multiple myeloma Yoshinori NAGATA, Nahoko IWAKURA, Yoshihito TAKATSUKI, Ken OKAZAKI Peripheral Nerve 31(1): 165-168, 2020.

---