cliot (version 1.0.0)

rapid_acetabular_score: RAPID Score for Acetabular Chondrolabral Disruption

Description

Calculates the Rapidly Assessed Predictor of Intraoperative Damage (RAPID) score. This preoperative scoring system predicts the presence of high-grade acetabular labrum articular disruption (ALAD grade 3 or 4) in patients undergoing hip arthroscopy for femoroacetabular impingement.

Usage

rapid_acetabular_score(sex, tonnis_grade, cam_morphology)

Value

A list containing:

RAPID_Score

The calculated total score (Range 0-5).

Risk_Prediction

Estimated probability of finding high-grade chondral damage intraoperatively.

Arguments

sex

String. Patient sex ("Male" or "Female"). Male sex adds 1 point.

tonnis_grade

Numeric (0-2). Tönnis classification of osteoarthritis. 0: No signs of OA (0 points). 1: Increased sclerosis, slight narrowing/lipping (+2 points). 2: Small cysts, moderate narrowing, loss of sphericity (+3 points). Note: Grade 3 is a contraindication to arthroscopy and not scored.

cam_morphology

Numeric (0 or 1). Presence of Cam morphology, defined as an alpha angle > 55 degrees. (1 = Present/Yes, +1 point).

References

Nwachukwu BU, Chang B, Rotter B, et al. The Rapidly Assessed Predictor of Intraoperative Damage (RAPID) Score: An In-Clinic Predictive Model for High-Grade Acetabular Chondrolabral Disruption. Am J Sports Med. 2019;47(2):395-400. doi:10.1177/0363546518813091

Examples

# Example 1: High Risk Candidate
# Male (+1), Tonnis Grade 1 (+2), Cam Present (+1)
# Score = 4
rapid_acetabular_score("male", 1, 1)

# Example 2: Low Risk Candidate
# Female (0), Tonnis Grade 0 (0), Cam Absent (0)
# Score = 0
rapid_acetabular_score("female", 0, 0)