Proximal varus deformity in a short femur. LRS Fixator with Multiplanar Clamp. (a) D200 series fixator in place with Multiplanar Clamp proximally; osteotomy performed and initial lengthening by callotasis to stretch soft tissues. (b) Acute shortening and correction by callus manipulation, and completion of lengthening. Use of HA-coated screws is recommended.