# Sandbox.SceneModel.GetParentSpaceBone

```csharp
Transform GetParentSpaceBone(int i)
```

Returns the parent space transform of a bone by its index.

### Parameters

- `i` (`int`): Index of the bone to calculate transform of.

### Returns

`Transform`: The parent space transform, or an identity transform on failure.

Declared in [Sandbox.SceneModel](/api/Sandbox.SceneModel).
Assembly: `Sandbox.Engine`.