English is available.

Welcome !


Welcome to "Emerald Orthopedic & Pain clinic" !

This is Tatsuya Masuko, MD and PhD.


My speciality is "Orthopedic" and "pain".

I started "Emerald Orthopedic & Pain clinic" from 2019/4/1.


Because I studied Biology at Johns Hopkins University in USA for 2 years, English is available, of course, not so fluent.


When you have some diseases or symptoms, please ask "Emerald Orthopedic & Pain clinic" !


In 1999, graduate from Hokkaido University and become MD (speciality: Orthopedics)

From 2003 to 2005, study at Johns Hopkins University in USA

In 2005, become PhD

From 2007 to 2010, become Assistant professor at Hokkaido University

From 2019, open  "Emerald Orthopedic & Pain clinic"


  •  Upper extremity
  • Oriental medicine
  • Cognitive Behavior Treatment
  • Biofeed back therapy

Time table






1 minute-walk from Exit 4 of Asabu station (Nanboku line)



2 minute-walk from Asabu Bus Terminal



9 minutes-walk from Shin-Kotoni station (Gakuen-toshi line)

Parking, 341 cars available

We have 328 cars-space on 3F, 4F,  and roof floor of clinic building, ASABU LAND.

Moreover, we have other 13 cars-space in front of "Emerald Orthopedic & Pain clinic".



[1] Tatsuya Masuko and Akio Minami. Chapter 10. Wrist Reconstructive Procedures (Fractures and Dislocations). In: Hand and Upper Extremty Reconstruction. Ed: Kevin C. Chung. Elsevier, p135-147, 2008.


[1] Masuko, T.; Kato, H.; Minami, A.; Inoue, M.; and Hirayama, T.: Surgical treatment of acute elbow flexion contracture in patients with congenital proximal radioulnar synostosis. A report of two cases. J Bone Joint Surg Am, 86-A(7): 1528-33, 2004.

[2] Yamane, S.; Iwasaki, N.; Majima, T.; Funakoshi, T.; Masuko, T.; Harada, K.; Minami, A.; Monde, K.; and Nishimura, S.: Feasibility of chitosan-based hyaluronic acid hybrid biomaterial for a novel scaffold in cartilage tissue engineering. Biomaterials, 26(6): 611-9, 2005.

[3] Masuko, T.; Minami, A.; Iwasaki, N.; Majima, T.; Nishimura, S. -I.; Lee, Y. C.: Carbohydrate analysis by a phenol-sulfuric acid method in microplate format. Anal Biochem., 339(1):69-72, 2005.

[4] Masuko, T.; Minami, A.; Iwasaki, N.; Majima, T.; Nishimura, S. -I.; Lee, Y. C.: Thiolation of chitosan. Attachment of proteins via thioether formation. Biomacromolecules, 6(2):880-4, 2005.

[5] Masuko, T.; Iwasaki, N.; Yamane, S.; Funakoshi, T.; Majima, T.; Minami, A.; Ohsuga, N; Ohta, T.; Nishimura, S. –I.: Chitosan-RGDSGGC-Conjugate as a Scaffold Material for Musculoskeletal Tissue Engineering. Biomaterials, 26(26):5339-47, 2005.

[6] Funakoshi, T, Majima T, Iwasaki N, Yamane S, Masuko T, Minami A, Harada K, Tamura H, Tokura S, Nishimura SI.: Novel chitosan-based hyaluronan hybrid polymer fibers as a scaffold in ligament tissue engineering. J Biomed Mater Res A., Jul 12, 2005 Sep 1;74(3):338-46.

[7] Iwasaki N, Masuko T, Ishikawa J, Minami A.: Surgical Efficacy of Carpal Tunnel Release for Carpal Tunnel Syndrome in Acromegaly: Report of Four Patients. J Hand Surg [Br]. 2005 Dec;30(6):605-6. Epub 2005 Aug 10.

[8] Noriko Nishioka, Tamotsu Kamishima, Tatsuya Masuko, Kanako C. Kubota, Miki Komatsu, Norimasa Iwasaki, Takayuki Nojima, Tomoo Itoh, Ardene A. Harris, Akio Minami, Hiroki Shirato: Intra-articular nodular fasciitis in the elbow joint, with an emphasis on MR imaging findings. Journal of Radiology Extra 69 (2009) e33–e36.

[9] Iwasaki N, Masuko T, Minami A. Forearm fascial hernia after harvesting the palmaris longus tendon. J Hand Surg Eur Vol. 2009 Jun;34(3):408-9.

[10] Masuko T, Iwasaki N, Ishikawa J, Kato H, Minami A. Radiolunate fusion with distraction using corticocancellous bone graft for minimizing decrease of wrist motion in rheumatoid wrists. Hand Surg. 2009;14(1):15-21.

[11] Iwasaki N, Kato H, Ishikawa J, Masuko T, Funakoshi T, Minami A. Autologous osteochondral mosaicplasty for osteochondritis dissecans of the elbow in teenage athletes. J Bone Joint Surg Am. 2009 Oct;91(10):2359-66.

[12] Iwasaki N, Masuko T, Funakoshi T, Minami A. Elderly kendo (Japanese fencing) player with Kienböck's disease in one wrist and Preiser's disease in the other wrist: a case report. Hand Surg. 2010;15(1):47-51.

[13] Iwasaki N, Yamane S, Nishida K, Masuko T, Funakoshi T, Kamishima T, Minami A. Transplantation of tissue-engineered cartilage for the treatment of osteochondritis dissecans in the elbow: outcomes over a four-year follow-up in two patients. J Shoulder Elbow Surg. 2010 Dec;19(8):e1-6. Epub 2010 Sep 20.

[14] Iwasaki N, Kato H, Ishikawa J, Masuko T, Funakoshi T, Minami A. Autologous osteochondral mosaicplasty for osteochondritis dissecans of the elbow in teenage athletes: surgical technique. J Bone Joint Surg Am. 2010 Sep;92 Suppl 1 Pt 2:208-16.

[15] Yamada K, Masuko T, Iwasaki N. Rupture of the flexor digitorum profundus tendon after injections of insoluble steroid for a trigger finger. J Hand Surg Eur Vol. 2011 Jan;36(1):77-8.