The quantitative evaluation of the relationship between the forces applied to the palm and carpal tunnel pressure
| Autor: | Kai Nan An, Peter C. Amadio, Kazutoshi Kubo, Chunfeng Zhao, Steven L. Moran, Xiaoming Zhang, Yu Shiuan Cheng, Boran Zhou |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male medicine.medical_specialty viruses 0206 medical engineering Biomedical Engineering Biophysics 02 engineering and technology Wrist Article Contact force Tendons Young Adult 03 medical and health sciences 0302 clinical medicine Pressure Transducers Pressure medicine Humans heterocyclic compounds Orthopedics and Sports Medicine Carpal tunnel Carpal tunnel syndrome Aged Aged 80 and over Orthodontics 030222 orthopedics business.industry Rehabilitation Middle Aged Hand musculoskeletal system medicine.disease Carpal Tunnel Syndrome 020601 biomedical engineering Median nerve Median Nerve Surgery body regions enzymes and coenzymes (carbohydrates) medicine.anatomical_structure Entrapment Neuropathy Female Palm Cadaveric spasm business |
| Zdroj: | Journal of Biomechanics. 66:170-174 |
| ISSN: | 0021-9290 |
| Popis: | Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy occurring in upper limbs. The etiology, however, has not been fully understood yet. Median nerve could be compressed by either increase of carpal tunnel pressure (CTP) or direct impingement when it is forced toward to carpal ligament especially in wrist flexion leading to CTS development. Thus, the increase of carpal tunnel pressure is considered an important role in CTS development. It has been identified that forces applied to the palm would affect the CTP. However, the quantitative relationship between palmar contact force and CTP is not known. The purpose of this study was to quantitatively evaluate the relationship between palmar contact force and CTP. Eight human cadaveric hands were used. The CTP was measured with a diagnostic catheter-based pressure transducer inserted into the carpal tunnel. A custom made device was used to apply forces to the palm for the desired CTP. Palmar contact forces corresponding to the determined CTP level were recorded respectively. The testing was repeated with different ranges of tension applied to the flexor digitorum superficialis tendon of the third finger. The tensions were constant at 50 g for the other flexor tendons and median nerve. The results showed that CTP increased linearly with the force applied to the palm. When CTP was 30 mmHg, mean values of the contact force to the palm was 293 g (SD: 15.2) including all tensions. These results would help to understand the effect of daily activities with hands on CTP. |
| Databáze: | OpenAIRE |
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