Koji Moriya

ORCID: 0000-0003-3143-3442
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About
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Research Areas
  • Orthopedic Surgery and Rehabilitation
  • Elbow and Forearm Trauma Treatment
  • Peripheral Nerve Disorders
  • Shoulder Injury and Treatment
  • Bone fractures and treatments
  • Tendon Structure and Treatment
  • Anesthesia and Pain Management
  • Reconstructive Surgery and Microvascular Techniques
  • Nerve Injury and Rehabilitation
  • Pain Management and Opioid Use
  • Dental Radiography and Imaging
  • Spine and Intervertebral Disc Pathology
  • Surgical Sutures and Adhesives
  • Shoulder and Clavicle Injuries
  • Dental Anxiety and Anesthesia Techniques
  • Congenital limb and hand anomalies
  • Dupuytren's Contracture and Treatments
  • Organ and Tissue Transplantation Research
  • Gear and Bearing Dynamics Analysis
  • Hemostasis and retained surgical items
  • Spinal Fractures and Fixation Techniques
  • Tissue Engineering and Regenerative Medicine
  • Sports injuries and prevention
  • Electron and X-Ray Spectroscopy Techniques
  • Soft tissue tumors and treatment

Tottori University Hospital
2024

Tokyo Metropolitan Bokutoh Hospital
2024

Osaka Metropolitan University
2024

Niigata Seiryo University
2017-2018

Seirei Hamamatsu General Hospital
2007-2010

Tachikawa Hospital
2005-2006

Kanagawa Dental University
1983

We evaluated the factors influencing outcomes of flexor tendon repair in 112 fingers using a six-strand suture with Yoshizu #1 technique and early postoperative active mobilization 101 consecutive patients. A total 32 had injuries Zone I, 78 II, two III. The mean follow-up period was 6 months; 16 patients (19 fingers) participated long-term 2 to years. motion 230° SD 29°; it correlated negatively age. 231° 28° after lacerated digitorum superficialis tendon, 205° 37° excision ends (p =...

10.1177/1753193414551682 article EN Journal of Hand Surgery (European Volume) 2014-09-23

We report the results of complete release entire A2 pulley after zone 2C flexor tendon repair followed by early postoperative active mobilization in seven fingers and their comparisons with 33 partial release. In fingers, was necessary to allow free gliding repairs five both C1 pulleys two. No bowstringing clinically evident any finger. Two required tenolysis. Using Tang’s criteria, function two digits ranked as excellent, four good one fair; there no failure. The functional return these...

10.1177/1753193416646521 article EN Journal of Hand Surgery (European Volume) 2016-05-12

We report on the outcomes of flexor tendon repair in zone 2 subzones with early active mobilization 102 fingers 88 consecutive patients. There were 28, 53, 15, and six repairs zones 2A to 2D, respectively. Rupture occurred four fingers, all 2B. Excluding those ruptures, mean total motion was 230° (range 143°–286°). Evaluated Tang’s criteria, ranked excellent 39 good 46, fair ten, poor three, failure four. The 2C significantly inferior 2B 2D ( p = 0.02). Our results suggest that laceration...

10.1177/1753193417715213 article EN Journal of Hand Surgery (European Volume) 2017-06-13

We report the outcomes of repair flexor digitorum profundus tendon in zone 2a 22 fingers. The was repaired with a six-strand method and A4 pulley completely released. Release C2 combined necessary 12 fingers, nine fingers underwent complete release A3, C2, pulleys, one finger C1, pulleys. mean total active motion three joints 234° at 5 to months follow-up. No bowstringing noted these good excellent recovery digital 20 (91%) out according Strickland’s criteria or Tang’s criteria. Our results...

10.1177/1753193415619082 article EN Journal of Hand Surgery (European Volume) 2015-12-16

We report seven patients requiring tenolysis after primary or delayed flexor tendon repair and early active mobilization out of 148 fingers 132 consecutive with Zone 1 2 injuries from 1993 to 2017. Three had 2A, two 2B, 2C injuries. Two underwent at Week 4 6 because suspected rupture. The other five 12 weeks repair. Adhesions were moderately dense between the digitorum superficialis profundus tendons pulleys. According Strickland Tang criteria, outcomes excellent in one finger, good four,...

10.1177/1753193418809796 article EN Journal of Hand Surgery (European Volume) 2018-11-12

We reviewed 110 trigger digits, treated surgically, to compare the outcomes of finger and thumb in terms peri-operative characteristics complications. The patients with complained mainly pain on motion, while those triggering or limited range motion. Trigger fingers had a significantly longer duration before surgery than did thumbs. took for symptoms subside. In our series, 64% flexion contracture PIP joint more three weeks after surgery. Our results suggest that differ between thumb,...

10.1142/s0218810405002619 article EN Hand Surgery 2005-07-01

Even in patients with an open capitellar physis, nonsurgical treatment for advanced-stage osteochondritis dissecans (OCD) of the capitellum often yields poor outcomes. However, surgical methods such are controversial. At our institution, we have consistently performed closed-wedge osteotomy distal humerus to treat OCD capitellum, regardless grade or condition physis.To clarify clinical and radiological results determine influence physis on young patients.Case series; Level evidence, 4.A...

10.1177/2325967119876247 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2019-10-01

Halo application is a standard method for cervical immobilization. However, complications may occur in children because of their thin skull and immature bone. The authors report two cases odontoid fracture preschool treated with Minerva cast. Two 4-year-old sustained displaced fractures motor vehicle accidents. were immediately reduced immobilized using cast, followed by the soft collar. By 1-year follow-up, uneventful bone union had occurred, able to attend minimal or no neurologic...

10.1097/01.bsd.0000171029.48866.f7 article EN Journal of Spinal Disorders & Techniques 2006-05-01

We reviewed a series of 62 consecutive patients with dorsally displaced fractures the distal radius, including 20 extra-articular and 42 intra-articular fractures. All were treated palmar locking plate systems at our institution between 2002 2006. After minimum follow-up time 12 weeks, had healed satisfactory radiographic functional results. According to demerit point system Gartland Werley, 35 rated excellent, 26 good, one fair. In good fair groups, points almost all for ulnar wrist pain....

10.1142/s0218810411005527 article EN Hand Surgery 2011-01-01

Postoperative pain management after upper limb surgery is important for preventing adverse events that can prolong hospital stay and cause readmission. This study aimed to identify the risk factors associated with rescue analgesic use on first postoperative day performed under single-injection brachial plexus block (BPB). We retrospectively analyzed records from 930 patients who underwent a BPB. Postoperatively, were administered oral loxoprofen regularly analgesics when analgesia was...

10.1186/s40981-017-0110-9 article EN cc-by JA Clinical Reports 2017-07-27

Background: The wide-awake approach enables surgeons to adjust tendon transfer tension during active movement. Objective: To examine the proximity of index finger thumb in motor network brain extensor indicis proprius (EIP) opponensplasty, performed under local anesthesia, for restoration opposition patients with thenar paralysis caused by advanced carpal tunnel syndrome. Methods: Between April 2009 and October 2013, seven underwent opponensplasty EIP conjunction release. Under anesthesia...

10.1177/2513826x1600200205 article EN Plastic Surgery Case Studies 2016-06-01

Delayed union and non-union of distal radial fractures (DRFs) are rare, there a few reports delayed nonunion DRFs after palmar locking plate (PLP) fixation. A 68-year-old female patient presented to our hospital with left-sided wrist pain. Radiographs computed tomography revealed displaced DRF ulnar styloid fracture. We performed open reduction internal fixation PLP for the tension band wiring However, bone was not completed three months operation. initiated low-intensity pulsed ultrasound...

10.7759/cureus.51468 article EN Cureus 2024-01-01

Introduction: The designs of polyaxial locking systems differ among manufacturers. Notably, manufacturers do not explicitly indicate the strength mechanism their implants. This study aimed to investigate mechanical properties a newly developed implant and compare strengths at different screw insertion angles (0°, 5° 10°).Materials methods: was evaluated using static load testing three 10°) until failure, ultimate measured. Loading performed as cantilever bending generate moment in mechanism....

10.2139/ssrn.4733305 preprint EN 2024-01-01
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