# Semilandmark placement on a distal femur (curve and surface) **URL:** \ **Category:** Support\ **Created:** [April 8, 2021, 5:16pm UTC](https://discourse.slicer.org/t/semilandmark-placement-on-a-distal-femur-curve-and-surface/17003 "2021-04-08T17:16:53Z")\ **Posts on this page:** 3\ **Page:** 1

**Author:** ![aotero54](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@aotero54](https://discourse.slicer.org/u/aotero54)\ **Post date:** [April 8, 2021, 5:16pm UTC](https://discourse.slicer.org/t/semilandmark-placement-on-a-distal-femur-curve-and-surface/17003/1 "2021-04-08T17:16:53Z")

I am having trouble placing curve and surface semilandmarks. For the curve, when I resample the resampled curve is underneath the 3D model instead of constrained to the surface (with the constrain to surface option selected). For the surface, I am having trouble placing semilandmarks just on the distal articular surface. I am not sure if this is because I do not have a singular landmark data set or because the curves have not been delineated yet ---

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\ **Post date:** [April 8, 2021, 5:19pm UTC](https://discourse.slicer.org/t/semilandmark-placement-on-a-distal-femur-curve-and-surface/17003/2 "2021-04-08T17:19:00Z")

A post was merged into an existing topic: [Semilandmark placement on a distal femur (curve and surface)](https://discourse.slicer.org/t/semilandmark-placement-on-a-distal-femur-curve-and-surface/17004) ---