1
Completely free
No plans, no subscriptions. All calculators are and will always be free.
Free · No login · Scientifically validated
Free clinical orthopedic calculators
Validated clinical tools for orthopedic surgeons, physiotherapists and patients. Score in seconds, export to PDF and JSON, no login, on any device.
10+
Validated instruments
3
Languages
Available calculators
Validated clinical instruments, ready to use.
IKDC
Knee
Subjective assessment of symptoms, function and sports activity in knee injuries. International standard for ligament and meniscus conditions.
OpenKOOS
Knee / Osteoarthritis
Assesses symptoms, pain, daily function, sport and quality of life related to the knee. Widely used in research and clinical practice.
OpenLysholm
Knee / Ligaments
Evaluates limitation, instability, pain, swelling and muscle atrophy in knee ligament injuries.
OpenTegner
Activity level
Ordinal scale from 0 to 10 quantifying the patient's physical and sports activity level before and after injury.
OpenWOMAC
Knee / Hip osteoarthritis
Assesses pain, stiffness and physical function in patients with knee or hip osteoarthritis.
OpenDASH
Upper extremity
Assesses symptoms and functional ability of the upper extremity in a single unidimensional scale.
OpenQuickDASH
Upper extremity (short form)
Abbreviated version of the DASH, maintaining high validity and reliability with fewer items.
OpenODI
Lumbar spine
Gold standard for assessing functional disability related to chronic low back pain.
OpenLEFS
Lower extremity
Assesses lower extremity function in patients with orthopedic conditions of the hip, knee, ankle or foot.
OpenSF-36
General quality of life
Generic quality of life questionnaire with 8 domains of physical and mental health. Reference in global clinical research.
OpenWhy Orthoai?
Built for real clinical usability.
2
No login required
Access any calculator directly without creating an account or providing personal data.
3
Mobile-first
Interface optimized for bedside or clinic use, directly from your smartphone.
4
Clinical rigor
Algorithms based on validated instruments and international peer-reviewed publications.
What are orthopedic clinical scores?
Orthopedic clinical scores are standardized, scientifically validated instruments that allow the quantification of function, pain and quality of life in patients with musculoskeletal injuries or diseases. They transform subjective assessments into objective, reproducible data — essential for clinical decision-making and tracking treatment progress over time.
In orthopedic practice, these instruments are used in consultations, pre- and post-operative assessments, rehabilitation protocols and scientific publications. Tools such as the IKDC, KOOS and WOMAC are widely adopted in clinical studies and help standardize outcome communication among professionals, patients and researchers.
Regular application of functional scores allows healthcare professionals to objectively monitor patient recovery, identify plateaus in clinical progress, support therapeutic decisions with evidence, and communicate results in a standardized way across different services and specialists.
Orthoai was developed to make these tools accessible to any healthcare professional or patient, at no cost and without technical barriers, while respecting the original methodology of each validated instrument.
Important clinical notice
The tools available on Orthoai are clinical scoring support instruments. They do not perform medical diagnosis and do not replace in-person assessment by a qualified healthcare professional. Results should always be interpreted by a specialist in the full clinical context of the patient. This site does not provide medical advice.