Aim: The purpose of our research was to assess the vertical height changes after orthognathic surgery during anterio-posterior movement using cephalometric analysis. Methodology: Immediate Postsurgical and one-year postsurgical lateral cephalograms of 10 adult patients (age group - 17 to 40 years, with a mean age of 22.2 years) who had been treated successfully by maxillary Le-Fort I osteotomy were obtained. Comparisons were made between T1-T2 to assess the changes following surgery and to evaluate the stability, one year following the surgery using 5 horizontal, 5 vertical linear and 2 angular measurement. A paired t‑test was used to analyse the paired observations. Results: The incisors extrusion was limited to an average of 1.2 mm and the molars showed a 0.2 mm movement. The upper incisor showed a significant posterior movement. The upper molar also showed a posterior movement but to a lesser extent when compared to the incisors. Conclusion: There was a significant reduction in the facial height and significant anterior movement of maxilla after surgery. Even after one year of surgery, negligible amount of relapse was recorded except at the incisors.