trunk_impairment_scale: Trunk Impairment Scale (TIS)

In cliot: Clinical Indices and Outcomes Tools

Trunk Impairment Scale (TIS)

Description

Calculates the Trunk Impairment Scale (TIS) score, a tool used to evaluate motor impairment of the trunk after stroke. The scale assesses static sitting balance, dynamic sitting balance, and trunk coordination. The total score ranges from 0 to 23, with higher scores indicating better trunk performance.

Usage

trunk_impairment_scale(static_sitting_balance, dynamic_sitting_balance,
                       coordination)

Arguments

static_sitting_balance	Numeric (0-7). Score for static sitting balance. Includes items like ability to sit without support and maintain position.
dynamic_sitting_balance	Numeric (0-10). Score for dynamic sitting balance. Includes items like touching the bed/mat with the elbow (lateral flexion) initiated from the upper and lower trunk.
coordination	Numeric (0-6). Score for trunk coordination. Includes items like rotation of the shoulder girdle and pelvic girdle.

Value

A list containing:

TIS_Total_Score	The calculated total score (Range 0-23).
Interpretation	General interpretation of the score.
Subscale_Scores	Breakdown of scores for each subscale.

References

Verheyden G, Nieuwboer A, Mertin J, et al. The Trunk Impairment Scale: a new tool to measure motor impairment of the trunk after stroke. Clin Rehabil. 2004;18(3):326-334. doi:10.1191/0269215504cr733oa

Examples

# Example 1: Moderate Impairment
# Static: 5/7, Dynamic: 4/10, Coordination: 2/6
# Total = 11
trunk_impairment_scale(5, 4, 2)

# Example 2: Minimal Impairment
# Static: 7/7, Dynamic: 9/10, Coordination: 5/6
# Total = 21
trunk_impairment_scale(7, 9, 5)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.