Table 1.

Radiation dose experienced during hip replacement and hip arthroscopy surgery

Staff member	Distance from source [m]	Dose rate (mSv/h)	Dose rate with lead apron (mSv/h)	Hip replacement		Hip arthroscopy
				Cases per year to reach 1 mSv* No lead apron	Cases per year to reach 1 mSv* With lead apron	Cases per year to reach 1 mSv* No lead apron	Cases per year to reach 1 mSv* With lead apron
Surgeon	0.5	3.1227	0.0390	36	2870	64	5144
Surgical assistant	0.7	0.6846	0.0086	164	> 10,000	293	> 10,000
Anaesthetist	1.5	0.0453	0.0006	2472	> 10,000	4429	> 10,000
Anaesthetic nurse	1.2	0.1259	0.0016	890	> 10,000	1595	> 10,000
Instrument nurse (Scrub)	1.5	0.9080	0.0114	123	9872	221	> 10,000
Circulating nurse (Scout)	1.7	0.6984	0.0087	160	> 10,000	287	> 10,000