Table 1.

Isolated cervical spine pathologies

Author	Pathology	Severity (AHI score)	Level	Treatment
Hughes et al. [21]	Osteophyte	40	C2, C7	CPAP
Fuerderer et al. [20]	Osteophyte	NA	C2–C3, C7–T1	Surgery
Naik et al. [33]	Osteophyte	42	C2, C6	CPAP, surgery
Yoshida et al. [24]	Osteochondroma	47	C1	Surgery
Heike et al. [26]	Cervical instability	60	Occiput-C2	Surgery
Wang et al. [23]	Osteochondroma	NA	C1	Surgery
Ando et al. [19]	Osteophyte	9	C4–C6	NA
Kawaguchi et al. [25]	Os odontoideum	22.9	C1	Surgery
Eyigor et al. [18]	Osteophyte	62	C2, C6–C7	CPAP

AHI apnea–hypopnea index, CPAP constant positive airway pressure, NA not available