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Instrument copyright and licensing

Outcome measures are copyrighted works. Some are released free by their developers, some are licensed commercially, and the distinction matters to anyone using them in a study, a product or a clinic.

Almost no calculator site states this. We do, per instrument, because it is the first question a researcher asks — and because publishing it keeps us honest about what we are entitled to reproduce.

What this page is not

This is our working record, not legal advice, and not a substitute for your own licence. If you are using an instrument in a funded study or a commercial product, go to the rights holder directly. Where we know who that is, we link to them on the instrument’s page.

Licensed instrument6

An active rights holder operates a commercial licensing programme. We publish the instrument profile, thresholds and interpretation, but not the item wording, and we link you to the rights holder.

InstrumentRights holderOur status
IKDCInternational Knee Documentation Committee Subjective Knee Evaluation FormAmerican Orthopaedic Society for Sports MedicineNot yet approached
NDINeck Disability IndexHoward VernonNot yet approached
Oxford Hip ScoreOxford Hip ScoreOxford University Innovation, University of OxfordNot yet approached
Oxford Shoulder ScoreOxford Shoulder ScoreOxford University Innovation, University of OxfordNot yet approached
QuickDASHQuick Disabilities of the Arm, Shoulder and HandInstitute for Work & Health, TorontoNot yet approached
STarT BackSTarT Back Screening ToolKeele UniversityNot yet approached
Licence unconfirmed9

We have not yet obtained written confirmation of the permitted use. Treat these as requiring your own check before you use them commercially.

InstrumentRights holderOur status
ACL-RSIAnterior Cruciate Ligament – Return to Sport after Injury scaleKate E. Webster and colleaguesNot yet approached
CapriniCaprini Risk Assessment Model for venous thromboembolism—Not yet approached
FADIFoot and Ankle Disability Index—Not yet approached
KJOCKerlan-Jobe Orthopaedic Clinic Shoulder and Elbow ScoreKerlan-Jobe Orthopaedic ClinicNot yet approached
Knee Outcome SurveyKnee Outcome Survey — Activities of Daily Living Scale and Sports Activity Scale—Not yet approached
Modified OswestryModified Oswestry Low Back Pain Disability Questionnaire—Not yet approached
ODIOswestry Disability IndexJeremy Fairbank / MAPI Research TrustNot yet approached
UEFSUpper Extremity Function Scale—Not yet approached
WOSIWestern Ontario Shoulder Instability Index—Not yet approached
Free to use19

The developer publishes the instrument for free clinical and research use, or distributes it openly themselves.

InstrumentRights holderOur status
ASES ScoreAmerican Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form — patient self-report section—No licence needed
FAAMFoot and Ankle Ability MeasureRobRoy L. MartinNo licence needed
FAOSFoot and Ankle Outcome ScoreEwa M. RoosNo licence needed
HOOSHip disability and Osteoarthritis Outcome ScoreEwa M. RoosNo licence needed
HOSHip Outcome ScoreRobRoy L. MartinNot yet approached
KOOSKnee injury and Osteoarthritis Outcome ScoreEwa M. RoosNo licence needed
LEFSLower Extremity Functional Scale—Not yet approached
LysholmLysholm Knee Scoring Scale—No licence needed
MarxMarx Activity Rating Scale—Not yet approached
Mayo Elbow ScoreMayo Elbow Performance Score—Not yet approached
Mayo Wrist ScoreMayo Wrist Score—Not yet approached
PROMIS Global-10PROMIS Global Health Short Form (Global-10)PROMIS Health Organization / Northwestern University (HealthMeasures)No licence needed
PSEQPain Self-Efficacy QuestionnaireMichael K. NicholasNot yet approached
RMDQRoland-Morris Disability Questionnaire—Not yet approached
SPADIShoulder Pain and Disability Index—No licence needed
SSTSimple Shoulder Test—Not yet approached
Tampa Scale of KinesiophobiaTampa Scale of Kinesiophobia—Not yet approached
TegnerTegner Activity Scale—No licence needed
TSK-11Tampa Scale of Kinesiophobia, 11-item version—Not yet approached
No licence required52

A method, formula, angle or published decision rule rather than a copyrighted questionnaire. Methods are not protected the way item wording is.

InstrumentRights holderOur status
Alpha AngleAlpha Angle for Cam Morphology—No licence needed
AO/OTAAO/OTA Fracture and Dislocation Classification—No licence needed
AOFAS Ankle-HindfootAOFAS Ankle-Hindfoot Scale—No licence needed
AOFAS HalluxAOFAS Hallux Metatarsophalangeal-Interphalangeal Scale—No licence needed
AOFAS Lesser ToesAOFAS Lesser Toes Metatarsophalangeal-Interphalangeal Scale—No licence needed
ASAASA Physical Status ClassificationAmerican Society of AnesthesiologistsNot yet approached
BeightonBeighton Score for Joint Hypermobility—No licence needed
Böhler AngleBöhler Angle—No licence needed
Canadian C-Spine RuleCanadian C-Spine Rule—No licence needed
Caton-DeschampsCaton-Deschamps Index—No licence needed
CCICharlson Comorbidity Index—No licence needed
Cobb AngleCobb Angle for Scoliosis—No licence needed
Constant ScoreConstant-Murley Shoulder Score—No licence needed
CroweCrowe Classification of Developmental Dysplasia of the Hip—No licence needed
ECOGECOG Performance Status—No licence needed
ElixhauserElixhauser Comorbidity Score (van Walraven weights)—No licence needed
Ficat-ArletFicat and Arlet Classification of Osteonecrosis of the Femoral Head—No licence needed
FrykmanFrykman Classification of Distal Radius Fractures—No licence needed
GardenGarden Classification of Femoral Neck Fractures—No licence needed
GartlandGartland Classification of Supracondylar Humerus Fractures—No licence needed
Gustilo-AndersonGustilo-Anderson Classification of Open Fractures—No licence needed
Harris Hip ScoreHarris Hip Score—Not yet approached
HawkinsHawkins Classification of Talar Neck Fractures—No licence needed
Insall-SalvatiInsall-Salvati Index—No licence needed
Kellgren-LawrenceKellgren-Lawrence Classification of Osteoarthritis—No licence needed
Kocher CriteriaKocher Criteria for Septic Arthritis of the Hip—No licence needed
Lauge-HansenLauge-Hansen Classification of Ankle Fractures—No licence needed
LCEALateral Centre-Edge Angle of Wiberg—No licence needed
MasonMason Classification of Radial Head Fractures—No licence needed
MESSMangled Extremity Severity Score—No licence needed
MeyerdingMeyerding Classification of Spondylolisthesis—No licence needed
MirelsMirels' Score for Pathological Fracture Risk—No licence needed
MMEMorphine Milligram Equivalent (MME) Calculator—No licence needed
NeerNeer Classification of Proximal Humerus Fractures—No licence needed
NEXUSNEXUS Low-Risk Criteria for Cervical Spine Imaging—No licence needed
Ottawa Ankle RulesOttawa Ankle Rules—No licence needed
Ottawa Knee RuleOttawa Knee Rule—No licence needed
OuterbridgeOuterbridge Classification of Chondral Lesions—No licence needed
PauwelsPauwels Classification of Femoral Neck Fractures—No licence needed
Pittsburgh Knee RulesPittsburgh Knee Rules—No licence needed
RockwoodRockwood Classification of Acromioclavicular Joint Injuries—No licence needed
Rowe ScoreRowe Score for Shoulder Instability—No licence needed
Salter-HarrisSalter-Harris Classification of Physeal Fractures—No licence needed
SandersSanders Classification of Intra-articular Calcaneal Fractures—No licence needed
SchatzkerSchatzker Classification of Tibial Plateau Fractures—No licence needed
SINSSpinal Instability Neoplastic Score—No licence needed
TLICSThoracolumbar Injury Classification and Severity Score—No licence needed
Tönnis AngleTönnis Angle (Acetabular Index of the Weight-Bearing Zone)—No licence needed
UCLA Shoulder ScoreUniversity of California at Los Angeles Shoulder Rating Scale—No licence needed
VancouverVancouver Classification of Periprosthetic Femoral Fractures—No licence needed
WeberDanis-Weber Classification of Ankle Fractures—No licence needed
Wells DVTWells Score for Deep Vein Thrombosis—No licence needed