From: Rib fracture after stereotactic radiotherapy for primary lung cancer: prevalence, degree of clinical symptoms, and risk factors
Degree of pain*
Fracture group (n = 41)
Non-fracture group (n = 136)
Grade 0
27 (65.9)**
132 (97)
Grade 1
7 (17.1)
4 (3)
Grade 2
0 (0)
Grade 3 and 4