Joint Replacement Candidacy Calculator

Evaluate candidacy for total hip or knee replacement based on pain, function, radiographic severity, and surgical risk factors.

Pain VAS (0-10)

Functional limitation (0-10)

K-L grade (0-4)

Conservative treatment (months)

BMI

Age (years)

Comorbidities (0-5)

Tab to move between fields

Candidacy score (0-100)

Surgical risk (0-2)0

Recommendation (0-2)2

5-year implant survival (%)97

Expected hospital stay (days)1.5

Kl NameModerate

How to Use This Calculator

Rate Pain VAS (0 = no pain, 10 = worst imaginable) and Functional limitation (0 = none, 10 = severe).
Enter the Kellgren-Lawrence radiographic grade (0 = none to 4 = severe joint space loss) from imaging reports.
Enter months of Conservative treatment already attempted and the patient's BMI, Age, and number of significant Comorbidities.
Review the Candidacy score (0–100): ≥70 = strong candidate, 50–69 = moderate, <50 = continue conservative management.
Note the Surgical risk level (Low/Moderate/High), Recommendation, estimated 5-year implant survivorship (%), and expected hospital length of stay.

How the result changes with Pain VAS (0-10)

Pain VAS (0-10): Visual Analog Scale pain score (0=no pain, 10=worst).
Functional limitation (0-10): Functional limitation score (0=none, 10=severe).
K-L grade (0-4): Kellgren-Lawrence radiographic grade. 0=None, 4=Severe.
Conservative treatment (months): Duration of conservative management attempted.
BMI: Body mass index.
Age (years): Patient age.
Comorbidities (0-5): Number of significant comorbid conditions.

Candidacy score (0-100): Composite score. >=70 = strong candidate, 50-69 = moderate, <50 = continue conservative.
Surgical risk (0-2): 0=Low, 1=Moderate, 2=High perioperative risk.
Recommendation (0-2): 0=Continue conservative, 1=Shared decision, 2=Strong surgical candidate.
5-year implant survival (%): Estimated 5-year implant survivorship percentage.
Expected hospital stay (days): Estimated length of stay with enhanced recovery protocol.

Identify Input Parameters
4 parameters
Pain VAS (0-10) = 7, Functional limitation (0-10) = 6, K-L grade (0-4) = 3, Conservative treatment (months) = 6 = 7 input(s) provided
Calculate Candidacy score
76 = 76
Calculate Surgical risk
0 = 0
Calculate Recommendation
2 = 2