Orthopedics
15 calculators available
Corrected Calcium for Albumin
Corrects serum calcium for low albumin levels to assess true calcium status
24-Hour Fluid Balance
Calculates net fluid balance for volume status assessment and fluid management in hospitalized patients
Shock Index
Rapid assessment of hemodynamic status
FRAX® Fracture Risk Assessment
Estimates 10-year probability of major osteoporotic and hip fractures
Adrenal Incidentaloma Evaluation
Guides workup of incidentally discovered adrenal masses based on size and imaging characteristics
Pediatric BMI Percentile
Calculates BMI percentile for children and adolescents (2-20 years) using CDC growth charts
APGAR Score
Assessment of newborn condition at 1 and 5 minutes after birth
NEXUS Criteria for C-Spine Imaging
Clinical decision rule to determine need for cervical spine imaging in trauma patients
Ottawa Ankle Rules
Clinical decision rule to determine need for ankle and foot radiography after injury
Wells Score for DVT
Clinical prediction rule for deep vein thrombosis probability
FRAX Fracture Risk Assessment
WHO fracture risk assessment tool for 10-year probability of major osteoporotic fracture
Gustilo-Anderson Open Fracture Classification
Classification system for open fractures based on wound size, contamination, and soft tissue injury
Salter-Harris Fracture Classification
Classification system for pediatric physeal (growth plate) fractures
Harris Hip Score (HHS)
Validated outcome tool for hip function following arthroplasty or hip disease — assesses pain, function, deformity, and range of motion
Oxford Knee Score (OKS)
Patient-reported outcome measure for knee arthroplasty and knee osteoarthritis — 12 items covering pain and function over the past 4 weeks
QuickDASH — Upper Limb Disability
Shortened 11-item version of the DASH (Disabilities of the Arm, Shoulder and Hand) questionnaire measuring upper extremity disability and symptoms
Constant-Murley Shoulder Score
Validated shoulder function scoring system combining subjective symptoms with objective measurements — widely used for arthroplasty and rotator cuff outcomes
MESS — Mangled Extremity Severity Score
Predicts the need for primary amputation in severely injured extremities by scoring skeletal injury, ischaemia, shock, and age
Compartment Syndrome Delta Pressure
Calculates delta pressure (ΔP) to guide fasciotomy decision in suspected acute compartment syndrome
Caprini VTE Risk Score (Surgical)
Validated pre-operative VTE (DVT/PE) risk stratification to guide thromboprophylaxis decisions in surgical patients
Neck Disability Index (NDI)
10-section patient-reported outcome measure for cervical spine-related disability in daily activities
Oswestry Disability Index (ODI)
Gold-standard patient-reported outcome for low back pain disability — 10 sections covering pain intensity and impact on daily activities