The Experts below are selected from a list of 1032 Experts worldwide ranked by ideXlab platform

Navapong Anantavorasakul - One of the best experts on this subject based on the ideXlab platform.

Disorn Janesaksrisakul - One of the best experts on this subject based on the ideXlab platform.

Nontich Pongernnak - One of the best experts on this subject based on the ideXlab platform.

Atsushi Okawa - One of the best experts on this subject based on the ideXlab platform.

  • A new method of measuring the thumb pronation and palmar abduction angles during opposition movement using a three-axis gyroscope
    Journal of Orthopaedic Surgery and Research, 2018
    Co-Authors: Tomoyuki Kuroiwa, Toru Sasaki, Akimoto Nimura, Takashi Miyamoto, Koji Fujita, Atsushi Okawa
    Abstract:

    BackgroundThumb opposition is vital for hand function and involves pronation and palmar abduction. The improvement of pronation is often used as one of the evaluation items of the opponensplasty method for severe carpal tunnel syndrome. However, most of the studies used substitution evaluation methods for measurement of the pronation angle. Thus, there is still no appropriate method for measuring thumb pronation angle accurately in carpal tunnel syndrome patients.In recent reports, a wearable gyroscope was used to evaluate upper extremity motions and it can be possibly used for accurate measurement of the thumb pronation angle along the three-dimensionally moving Bone axis.Thus, we investigated the reliability of measuring thumb pronation using a gyroscope and evaluated whether this method can be used to detect opposition impairment.MethodsThe participants were volunteers with unaffected upper limbs (32 hands) and patients with carpal tunnel syndrome (27 hands). The pronation and palmar abduction angles during opposition movements were measured using a three-axis gyroscope that included a three-axis accelerometer. The gyroscope was fixed onto the First Metacarpal Bone and the thumb phalanx.ResultsThe pronation and palmar abduction angles of the Metacarpal Bone and the palmar abduction angles of the phalanx significantly decreased in the carpal tunnel syndrome group. The pronation angle of the Metacarpal Bone during opposition movement peaked later than the palmar abduction angle in all hands.ConclusionsWe were able to measure the thumb pronation and palmar abduction angles using the three-axis gyroscope, and this tool was able to detect impairments of thumb opposition due to carpal tunnel syndrome. This could be a tool for measuring thumb and finger angles and for detecting impairments caused by various diseases.

  • a new method of measuring the thumb pronation and palmar abduction angles during opposition movement using a three axis gyroscope
    Journal of Orthopaedic Surgery and Research, 2018
    Co-Authors: Tomoyuki Kuroiwa, Toru Sasaki, Akimoto Nimura, Takashi Miyamoto, Koji Fujita, Atsushi Okawa
    Abstract:

    Thumb opposition is vital for hand function and involves pronation and palmar abduction. The improvement of pronation is often used as one of the evaluation items of the opponensplasty method for severe carpal tunnel syndrome. However, most of the studies used substitution evaluation methods for measurement of the pronation angle. Thus, there is still no appropriate method for measuring thumb pronation angle accurately in carpal tunnel syndrome patients. In recent reports, a wearable gyroscope was used to evaluate upper extremity motions and it can be possibly used for accurate measurement of the thumb pronation angle along the three-dimensionally moving Bone axis. Thus, we investigated the reliability of measuring thumb pronation using a gyroscope and evaluated whether this method can be used to detect opposition impairment. The participants were volunteers with unaffected upper limbs (32 hands) and patients with carpal tunnel syndrome (27 hands). The pronation and palmar abduction angles during opposition movements were measured using a three-axis gyroscope that included a three-axis accelerometer. The gyroscope was fixed onto the First Metacarpal Bone and the thumb phalanx. The pronation and palmar abduction angles of the Metacarpal Bone and the palmar abduction angles of the phalanx significantly decreased in the carpal tunnel syndrome group. The pronation angle of the Metacarpal Bone during opposition movement peaked later than the palmar abduction angle in all hands. We were able to measure the thumb pronation and palmar abduction angles using the three-axis gyroscope, and this tool was able to detect impairments of thumb opposition due to carpal tunnel syndrome. This could be a tool for measuring thumb and finger angles and for detecting impairments caused by various diseases.

Pengwei Dai - One of the best experts on this subject based on the ideXlab platform.

  • Application of pulleys forceps in the surgical treatment of basal fractures of the First Metacarpal Bone involving carpoMetacarpal joint
    Chinese Journal of Hand Surgery, 2020
    Co-Authors: Wei Wang, He-jun Huang, Xiaoguang Zhang, Pengwei Dai
    Abstract:

    Objective To investigate the application and clinical efficacy of pulley forceps in the surgical treatment of basal fractures of the First Metacarpal Bone involving carpoMetacarpal joint. Methods From June 2014 to December 2018, 14 cases of basal fractures of the First Metacarpal Bone involving carpoMetacarpal joint were treated. The space between abductor pollicis longus tendon and extensor pollicis brevis tendon was served as the First operative window. The fracture end and carpoMetacarpal joint of thumb were exposed. The periosteum was cut on the ulnar side of the extensor pollicis brevis tendon served as the second operative window. C-shaped pulley forceps was placed on the volar and ulnar side of the Bone fragments. The Bone fragments were hooked and controlled. The First Metacarpal Bone was pulled and pronated by an assistant. Under direct vision, anatomical reduction of Bone fragments can be seen. Kirschner wire with a diameter of 1.0 or 1.2 mm was used to fix the fracture and carpoMetacarpal joint of thumb at the second and First operation windows respectively. After 4 weeks of plaster fixation, Kirschner wire was removed which was used for fixation of carpoMetacarpal joint of thumb and brace was used for fixation. The rehabilitation training of each joint of thumb was done intermittently. After 2 to 3 months, the remaining Kirschner wires were removed according to the fracture healing. Results After operation, all the wounds achieved primary healing. The articular surface was anatomically reduced and the fracture position was good. 10 patients were follow-up for 6 to 36 months. According to Gu Yudong evaluation method of opposition function, all the results were rated as excellent. The movement of carpoMetacarpal joint of thumb was normal in all directions. The VAS score was 0 in 7 cases, 1 in 1 case and 2 in 2 cases. Conclusion In the operation of the basal fractures of the First Metacarpal Bone involving carpoMetacarpal joint, C-shaped pulley forceps can reduce the operation difficulty, simplify the operation and improve the operation efficacy, which has a strong promotion significance. Key words: Fracture fixation; Treatment outcome; Pulley forceps; The base of the First Metacarpal Bone