Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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A Cadaveric Study of Thread Cubital Tunnel Release with Newly Developed Threads

  • Kang, Minsuk (Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea) ;
  • Nam, Yong Seok (Department of Anatomy, Institute for Applied Anatomy, College of Medicine, The Catholic University of Korea) ;
  • Kim, In Jong (Department of Rehabilitation Medicine, Howareyou Rehabilitation Clinic) ;
  • Park, Hae-Yeon (Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea) ;
  • Ham, Jung Ryul (Department of Research & Development, Ultra V Co. Ltd.) ;
  • Kim, Jae Min (Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea)
  • Received : 2021.06.01
  • Accepted : 2021.08.04
  • Published : 2022.03.01
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Abstract

Objective : The percutaneous thread transection technique is a surgical dissecting method using a dissecting thread inserted through a needle under ultrasound guidance without skin incision. As the new dissecting threads were developed domestically, this cadaver study was conducted to compare the effectiveness and safety between the new threads (ultra V sswire and smartwire-01) and a pre-existing commercial dissecting thread (loop & shear) by demonstrating a modified looped thread cubital tunnel release. Methods : The percutaneous cubital tunnel release procedure was performed on 29 fresh cadaveric upper extremities. The pre-existing commercial thread was used in 5 upper extremities. The two newly developed threads were used in 24 upper extremities. Two practitioners performed the procedures separately. After the modified looped thread cubital release, anatomical and histological analyses were performed by a blinded anatomist. The presence of the dissected cubital tunnel and damaged adjacent soft tissue was assessed. Results : Out of the 29 cadaveric upper extremities, 27 specimens showed complete dissection of the Osborne ligament and the proximal fascia of the flexor carpi ulnaris muscle. One specimen was incompletely dissected in each of the ultra V sswire and smartwire-01 groups. There were no injuries of adjacent structures including the ulnar nerve, ulnar artery, medial antebrachial cutaneous nerve, or flexor tendon with either the commercial thread or the newly developed threads. The anatomical analysis revealed clear and sharp incisional margins of the cubital tunnel in the Smartwire-01 and loop & shear groups. All three kinds of threads maintained proper linear elasticity for easy handling during the procedure. The smartwire-01 provided higher visibility in ultrasound than the other threads. Conclusion : The newly developed threads were effective and safe for use in the thread cubital tunnel release procedure.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science and Information & Communications Technology) (No. NRF-2020R1F1A1055076). URLs: https://www.nrf.re.kr/eng/index. The authors wish to acknowledge the financial support of the Catholic Medical Center Research Foundation made in the program year of 2020.

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