Objective evaluation of wrist and finger spasticity using 3D motion analysis and surface EMG

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00035052

Enrollment

Registered

2024-09-10

Start date

2023-02-01

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

spasticity of the wrist and finger flexors

Interventions

Group 1: Hypotheses Overview Central Hypothesis: The combination of 3D motion analysis and sEMG measurement is suitable for the objective assessment of spasticity in wrist and finger flexors and thus

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Norm: no upper extremity diseases, no neurological conditions Patient: flexor spasticity of the wrist/fingers

Exclusion criteria

Exclusion criteria: - Severe intellectual disability (inability to provide consent (guardianship), inability to cognitively execute prescribed targeted motor tasks), non-compliance and/or inability to provide consent - Botulinum toxin injection in the affected upper extremity within the last 6 months

Design outcomes

Primary

Measure	Time frame
Measurement Time Points: Healthy Subjects: Twice with a one-week interval Patients: 1 day preoperatively (if possible, a second time approximately one week later), 6 months postoperatively, 1 year postoperatively (if surgery is performed) Primary Outcome Measure: To investigate wrist and finger spasticity, passive stretching of the muscle groups under examination will be performed with three slow and three fast repetitions. The stretching is done manually to ensure applicability in clinical routine. The target speed for slow stretching is 30°/s, and for fast stretching is 180°/s. The following passive stretches will be conducted: Wrist extension with a closed fist (primarily FCU, FCR) Wrist extension with open fingers (FDS, FDP, FCU, FCR) Finger extension (D2-D5 individually) with a flexed wrist (FDS, FDP) Thumb extension with the wrist in a neutral position (FPL) Primary Outcome Parameters: The primary outcome parameters are the following EMG metrics for the aforementioned muscles: MVIC: Maximum Voluntary Isometric Contraction (MVIC) - Highest EMG activity within a defined period of 250 ms during maximal voluntary isometric muscle contraction. EMG LV: Average EMG activity during slow (30°/s) passive stretching from 200 ms before reaching the maximum stretch velocity to reaching 90% of the maximum achieved range of motion (Bar-On et al. 2013). EMG HV: Average EMG activity during fast (180°/s) passive stretching from 200 ms before reaching the maximum stretch velocity to reaching 90% of the maximum achieved range of motion (Bar-On et al. 2013). EMGchange: Difference between EMG HV and EMG LV (Bar-On et al. 2013).	—

Measure

Time frame

Measurement Time Points: Healthy Subjects: Twice with a one-week interval Patients: 1 day preoperatively (if possible, a second time approximately one week later), 6 months postoperatively, 1 year postoperatively (if surgery is performed) Primary Outcome Measure: To investigate wrist and finger spasticity, passive stretching of the muscle groups under examination will be performed with three slow and three fast repetitions. The stretching is done manually to ensure applicability in clinical routine. The target speed for slow stretching is 30°/s, and for fast stretching is 180°/s. The following passive stretches will be conducted: Wrist extension with a closed fist (primarily FCU, FCR) Wrist extension with open fingers (FDS, FDP, FCU, FCR) Finger extension (D2-D5 individually) with a flexed wrist (FDS, FDP) Thumb extension with the wrist in a neutral position (FPL) Primary Outcome Parameters: The primary outcome parameters are the following EMG metrics for the aforementioned muscles: MVIC: Maximum Voluntary Isometric Contraction (MVIC) - Highest EMG activity within a defined period of 250 ms during maximal voluntary isometric muscle contraction. EMG LV: Average EMG activity during slow (30°/s) passive stretching from 200 ms before reaching the maximum stretch velocity to reaching 90% of the maximum achieved range of motion (Bar-On et al. 2013). EMG HV: Average EMG activity during fast (180°/s) passive stretching from 200 ms before reaching the maximum stretch velocity to reaching 90% of the maximum achieved range of motion (Bar-On et al. 2013). EMGchange: Difference between EMG HV and EMG LV (Bar-On et al. 2013).

—

Secondary

Measure	Time frame
- The maximum extension deficit of the joint directly proximal to the attachment site of the muscle being stretched will be recorded during the passive stretching of the muscle (e.g., PIP joint for FDS; DIP joint for FDP, etc.) - Muscle Length and Stretching Velocity for the aforementioned muscles (using OpenSim)	—

Countries

Germany

Contacts

Public ContactMirjam Thielen

BG Klinik Ludwigshafen

mirjam.thielen@bgu-ludwigshafen.de+4962168108917

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026