OsteotomyApp is a professional-use planning support tool for trained healthcare professionals, supervised clinical team members, educators, and researchers working with osteotomy-related image review and measurement workflows.
The app helps users load or capture an X-ray or other relevant image, calibrate measurements using a known marker, place anatomical landmarks, visualize mechanical axes, review Fujisawa target planning, calculate osteotomy-related measurements, and save user-controlled result images for local review.

Key features:
• Image loading from the device image picker
• Optional camera capture for user-selected images
• Calibration using a known measurement marker
• Landmark placement and drawing workflow
• Mechanical axis and alignment visualisation
• Correction angle and osteotomy planning support
• Fujisawa target visualisation
• Local save/export of user-controlled result images
• Consent, Privacy Policy, Terms of Use, support, and app-page links shown before continuing

Important professional-use notice:
OsteotomyApp is a planning-support, education, research, and workflow-validation tool. It does not provide medical advice, does not diagnose or treat disease, does not make autonomous clinical decisions, does not replace professional judgment, and does not guarantee accuracy, clinical suitability, or regulatory compliance for any patient, procedure, institution, or jurisdiction. Users are responsible for image quality, calibration, landmark placement, calculations, patient/subject consent, privacy obligations, independent review, and final clinical decisions. This powerful features allow surgeon in an instant to comprehend in real time by updating simultaneously all relevant parameters by changing the correction angle and thus helping to differentiate between a femoral and or tibial cause of deformity and avoiding osteotomies that could worse joint obliquity.
The real time kinematic evaluation done after correction of the deformity assist in real time the optimal angle selection for uneventful correction of deformity taking into account all factors that potentially affect the end result.
Restoring the mechanical axis by osteotomies around knee is easily calculated and presented on screen. The preoperative planning methods outlined can be applied to both closed- and open-wedge osteotomies to normalize knee joint angles and the orientation of the midjoint line.
Privacy summary
This Android build is designed for local processing. The app does not include advertising, analytics, tracking SDKs, accounts, or developer-operated cloud upload. Images and measurements remain on the device unless the user chooses to save, export, share, email, upload, or store them using external services or destinations.