Postural Control and Trunk Impairment Scale (TIS) Day 2 Scoring
In short
Scoring the Trunk Impairment Scale (TIS) on Day 2 post-stroke. Assessing static, dynamic sitting balance, and trunk coordination to guide rehabilitation.
In this guide (2 sections)
Trunk control is the central biological prerequisite for balance, upper extremity reaching, and ambulation following ischemic stroke. The Trunk Impairment Scale (TIS), validated extensively across neuro-rehabilitation literature, evaluates static sitting balance, dynamic sitting balance, and segmental trunk coordination. Administering the TIS on Day 2 post-stroke provides objective stratification of axial motor deficits, enabling targeted bedside stabilization protocols.
Anatomical Substrates of Axial Motor Control in Stroke
Unlike distal limb musculature, which is driven predominantly by crossed lateral corticospinal tracts, axial trunk muscles (rectus abdominis, obliques, erector spinae, multifidus) receive bilateral innervation via anterior corticospinal and reticulospinal pathways. Despite bilateral innervation, unilateral stroke causes profound loss of trunk muscle symmetry, delayed anticipatory postural adjustments (APAs), and impaired multi-segmental trunk rotation.
| TIS Subscale | Max Score | Key Clinical Testing Items | Rehabilitation Priority | |
|---|---|---|---|---|
| Static Sitting Balance | 7 points | Sitting unsupported for 10s with thighs together, crossing legs | Midline sitting tolerance, foot-ground contact, pelvic levelness | |
| Dynamic Sitting Balance | 10 points | Selective lateral trunk flexion: shortening one side, lengthening other | Eccentric oblique control, lateral weight-shifting, lateral reach | |
| Trunk Coordination | 6 points | Selective rotation of upper trunk vs lower trunk 6 times | Segmental pelvic dissociation, counter-rotation during walking | |
| Total TIS Score | 23 points | Sum of all three subscales (0 to 23) | Score < 10 indicates high fall risk and need for trunk orthoses |
Bedside Administration and Dynamic Weight-Shifting Protocol
The TIS is administered with the patient seated at the edge of the bed, thighs fully supported, knees flexed at 90 degrees, and feet resting flat on the floor. No arm support is permitted during testing unless required for immediate safety.
Lateral Pelvic Weight-Shift and Trunk Elongation Drill
Objective: Activate ipsilateral lateral trunk flexors while eccentrically elongating contralateral obliques to improve dynamic TIS score.
- 1Position the patient seated tall at the bed edge with both feet flat on the floor and hands resting in their lap.
- 2Place your hands on the patient lateral lower ribcage and iliac crest.
- 3Instruct the patient to gently lift their hemiplegic hip toward their ribs, shortening the affected waistline.
- 4Ensure the patient does not lean forward or twist backward during the lateral weight shift.
- 5Hold the lateral excursion for 3 seconds, then guide a slow return to neutral midline sitting.
Seating Ergonomics and Daily Posture in Indian Households
At home, Indian stroke patients often spend hours slumping in deep, soft sofas or unsupported armchairs with back cushions that promote severe thoracic kyphosis and lateral leaning. Physiotherapists recommend seating the patient in a firm, straight-backed wooden dining chair fitted with lateral lumbar foam rolls to maintain axial spine alignment and encourage active trunk muscle firing.
Prognostic Significance of Early Trunk Scoring
A Day 2 TIS score above 14 points is highly predictive of unassisted household ambulation within 3 months. Conversely, patients scoring below 9 require intensive, focused trunk-dissociation therapy to prevent secondary spinal contractures and chronic seated instability.
- Standardized Testing Conditions: Administer the TIS with feet supported flat and thighs in contact with the bed surface to ensure valid scoring.
- Dynamic Subscale Focus: Prioritize dynamic lateral trunk flexion exercises, as this subscale correlates most strongly with functional walking.
- Firm Seating at Home: Instruct family caregivers to avoid soft sinking sofas, utilizing firm upright chairs for daytime sitting.
Stay within arm reach on the patient weak side during all TIS testing. Patients with sensory neglect or severe trunk weakness can tilt suddenly without recognizing that they are losing equilibrium.
What does the Trunk Impairment Scale measure in acute stroke?
The TIS measures static sitting balance, dynamic sitting balance, and coordination of trunk rotation. It has a maximum score of 23 points and provides a reliable measure of axial motor control.
Why is trunk control more important than arm strength for early walking?
The trunk provides the stable central platform for all lower extremity stepping movements. Without adequate core and pelvic stability, the patient cannot shift weight onto the paretic leg to swing the opposite foot forward.
Do I need a doctor referral to begin home neuro-physiotherapy in India?
Under the National Commission for Allied and Healthcare Professions (NCAHP) Act 2021, patients in India enjoy direct access to registered physiotherapists without requiring a mandatory doctor referral. At BookPhysio.in, you consult verified physiotherapists and pay directly per session without hidden fees or platform commissions.
Related recovery guides & articles
BookPhysio.in Editorial Team
The BookPhysio.in editorial team writes and maintains this content, checking it against reliable clinical sources. Content follows our medical review policy: general information only, and no page claims a clinical review until a named registered physiotherapist has signed it off.
Read our medical review policy