# Sandbox.SkinnedModelRenderer.PreviousBoneWorldTransforms

```csharp
System.ReadOnlySpan<Transform> PreviousBoneWorldTransforms { get; set; }
```

Last frame's final world-space bone transforms - the counterpart to [Sandbox.SkinnedModelRenderer.BoneWorldTransforms](/api/Sandbox.SkinnedModelRenderer/BoneWorldTransforms),
so consumers can tell how each bone moved this frame without tracking it themselves.

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