The pattern of tibial nerve excursion with active ankle dorsiflexion is different in older people with diabetes mellitus
| Autor: | Linda Wanek, Andrew T. Gray, Andrew Dilley, Kimberly S. Topp, Benjamin S. Boyd |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
musculoskeletal diseases
Nervous system Adult Male medicine.medical_specialty Popliteal fossa Movement Posture Biophysics Strain (injury) Models Biological Article Physical medicine and rehabilitation Diabetes Mellitus Medicine Humans Orthopedics and Sports Medicine Range of Motion Articular Tibial nerve business.industry Biomechanics Anatomy Middle Aged medicine.disease medicine.anatomical_structure Peripheral nervous system Hip Joint Ankle Tibial Nerve business Range of motion Ankle Joint |
| Zdroj: | Boyd, BS; Gray, AT; Dilley, A; Wanek, L; & Topp, KS. (2012). The pattern of tibial nerve excursion with active ankle dorsiflexion is different in older people with diabetes mellitus. Clinical Biomechanics, 27(9), 967-971. doi: 10.1016/j.clinbiomech.2012.06.013. UC San Francisco: Retrieved from: http://www.escholarship.org/uc/item/8nz9g5wb |
| DOI: | 10.1016/j.clinbiomech.2012.06.013. |
| Popis: | Background: The peripheral nervous system has an inherent capability to tolerate the gliding (excursion), stretching (increased strain), and compression associated with limb motions necessary for functional activities. The biomechanical properties during joint movements are well studied but the influence of other factors such as limb pre-positioning, age and the effects of diabetes mellitus are not well established for the lower extremity. The purposes of this pilot study were to compare the impact of two different hip positions on lower extremity nerve biomechanics during an active ankle dorsiflexion motion in healthy individuals and to determine whether nerve biomechanics are altered in older individuals with diabetes mellitus. Methods: Ultrasound imaging was used to quantify longitudinal motion of the tibial nerve and transverse plane motion of the tibial and common fibular nerves in the popliteal fossa during active ankle movements. Findings: In healthy individuals, ankle dorsiflexion created mean tibial nerve movement of 2.18 mm distally, 1.36 mm medially and 3.98 mm superficially. When the hip was in a flexed position there was a mean three-fold reduction in distal movement. In people with diabetes mellitus there was significantly less distal movement of the tibial nerve in the neutral hip position and less superficial movement of the nerve in both hip positions compared to healthy individuals. Interpretation: We have documented reductions in tibial nerve excursion due to limb pre-positioning thought to pre-load the nervous system using a non-invasive methodology. Thus, lower limb pre-positioning impacts nerve biomechanics during ankle motions common in functional activities. Additionally, our findings indicate that nerve biomechanics have the potential to be altered in older individuals with diabetes mellitus compared to younger healthy individuals. © 2012 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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