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. 2024 Jun 26;19(6):e0302218. doi: 10.1371/journal.pone.0302218

Table 1. Beighton scoring system.

Items Right Left
a. Passive opposition of the thumb to the volar side of the forearm 1 1
b. Passive dorsiflexion of the 5th MCP joint to ≥ 90° 1 1
c. Passive hyperextension of the elbow joint to ≥ 10° 1 1
d. Passive hyperextension of the knee joint to ≥ 10° 1 1
e. Placing hands flat on the floor with the knees kept straight 1
Maximum possible score 9