The REBA Method
The Rapid Entire Body Assessment (REBA) method uses a systematic process to assess the risks of MSD (Musculoskeletal Disorders) for the whole body and the risks associated with ergonomic design associated with work. It is an observation method sensitive to MSDs in different varieties of tasks. It divides the body into segments so that it can be noted individually, relative to the plane of movement.
The REBA method provides a scoring system for muscle activity caused by static, dynamic, changing or unstable postures. It gives an intervention threshold with an indication of the emergency.
Tools for REBA method
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The REBA method is used to assess the different body postures required, energetic efforts, the type of movement or action, repetition and difficulty of taking. A score is assigned to each of the following body regions: wrists, forearms, elbows, shoulders, neck, trunk, back, legs and knees. The method tables are then used to compile the risk factor variables generating a single score representing the risk level of MSD.
Restrictions et limites
- The REBA method is not recommended for evaluating manual handling tasks.
- The REBA method examines strengths and activity, but it mainly focuses on work postures.
- It does not take into account the duration of the activity, the recovery period, or the vibrations.
- It is only designed to assess the right side and the left side of the body separately, and there is no method for combining scores to obtain a result for the whole body.
- The cumulative effects of all activities performed in the course of a job or task are not taken into account.
- The REBA method does not allow precise evaluation of the tasks linked to small manipulations of objects with the hands.
- It does not make it possible to assess tasks requiring long travel or very varied and unpredictable tasks.
- The REBA method lacks precision in analyzing the frequency of efforts or certain postures very specific to production.
STEP 1 - Request analysis
Analysis of the request and development of criteria for work situations choice to be observed
STEP 2 - Workstation observations
Observation of all workstation elements ( operator posture, tools used).
- Identification of all possible interactions between the different elements.
- Select the posture to be evaluated for the specific task.
STEP 3 - Task assessment
Evaluation of critical postures using REBA postural assessment method to estimate postural risk level.
STEP 4 -Processing of analysis results
Analysis of postural data in order to draw up a list of priorities and to seek solutions and proposals for improvement.
STEP 5 - Improvement solutions
Formulation of the improvements based on the analysis results and implementation of measures taking into account the identified risk factors.
STEP 6 - REASSESS
Once the changes have been made, reassess with the REBA assessment tool to validate the results.