---
title: "lenke_classification"
description: "A system for classification of adolescent idiopathic scoliosis."
---

A system for classification of adolescent idiopathic scoliosis.

**Purpose.** To record the results for each component parameter and the classification for the Lenke classification system.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.lenke_classification.v1` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `form_id` | `uuid` → [`form`](/docs/tables/form) | no | The form this entry was recorded on. | — |
| `form_block_id` | `uuid` | yes | The block within the form, when the entry is bound to one. | — |
| `curve_type`<br />`curve_type_code`<br />`curve_type_system`<br />`curve_type_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Curve type | `/data[at0001]/events[at0002]/data[at0003]/items[at0004]` |
| `lumbar_spine_modifier`<br />`lumbar_spine_modifier_code`<br />`lumbar_spine_modifier_system`<br />`lumbar_spine_modifier_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Lumbar spine modifier | `/data[at0001]/events[at0002]/data[at0003]/items[at0011]` |
| `thoracic_sagittal_modifier`<br />`thoracic_sagittal_modifier_code`<br />`thoracic_sagittal_modifier_system`<br />`thoracic_sagittal_modifier_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Thoracic sagittal modifier | `/data[at0001]/events[at0002]/data[at0003]/items[at0015]` |
| `classification`<br />`classification_code`<br />`classification_system`<br />`classification_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Classification | `/data[at0001]/events[at0002]/data[at0003]/items[at0019]` |

## Constraints

```sql
check ((curve_type_code is null and curve_type_system is null and curve_type_valueset_id is null and curve_type is null) or (curve_type is not null and curve_type_code is not null and curve_type_system is not null and curve_type_valueset_id is not null))
check ((lumbar_spine_modifier_code is null and lumbar_spine_modifier_system is null and lumbar_spine_modifier_valueset_id is null and lumbar_spine_modifier is null) or (lumbar_spine_modifier is not null and lumbar_spine_modifier_code is not null and lumbar_spine_modifier_system is not null and lumbar_spine_modifier_valueset_id is not null))
check ((thoracic_sagittal_modifier_code is null and thoracic_sagittal_modifier_system is null and thoracic_sagittal_modifier_valueset_id is null and thoracic_sagittal_modifier is null) or (thoracic_sagittal_modifier is not null and thoracic_sagittal_modifier_code is not null and thoracic_sagittal_modifier_system is not null and thoracic_sagittal_modifier_valueset_id is not null))
check ((classification_code is null and classification_system is null and classification_valueset_id is null) or (classification is not null and classification_code is not null and classification_system is not null and classification_valueset_id is not null))
```

## Unique

- `form_block_id`

## References

| Columns | Target | On delete |
|---|---|---|
| `form_id` | [`form`](/docs/tables/form) | cascade |
| `form_id, form_block_id` | [`form_block`](/docs/tables/form_block) | cascade |
| `curve_type_valueset_id, curve_type_code, curve_type_system, curve_type` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `lumbar_spine_modifier_valueset_id, lumbar_spine_modifier_code, lumbar_spine_modifier_system, lumbar_spine_modifier` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `thoracic_sagittal_modifier_valueset_id, thoracic_sagittal_modifier_code, thoracic_sagittal_modifier_system, thoracic_sagittal_modifier` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `classification_valueset_id, classification_code, classification_system, classification` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Indexes

- `lenke_classification_form_id_idx` on `form_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-OBSERVATION.lenke_classification.v1/curve_type` | 6 |
| `org.openehr::openEHR-EHR-OBSERVATION.lenke_classification.v1/lumbar_spine_modifier` | 3 |
| `org.openehr::openEHR-EHR-OBSERVATION.lenke_classification.v1/thoracic_sagittal_modifier` | 3 |