Incidence of Heterotopic Ossification in Patients Receiving Radiation Therapy following Total Hip Arthroplasty

Table 1

The incidence of HO within primary diagnosis.

HO	OA	RA	AS	MA	AL	CDH	SCFH	AVN	Total
No	160	5	5	10	4	8	2	4	198
Yes	25; 15 Grade I; 5 Grade II; 5 Grade III	2; Grade I	3; 1 Grade I; 2 Grade II	4; 1 Grade I; 3 Grade III	3; 2 Grade I; 1 Grade II	0	0	0	37
	10.6%	0.8%	1.2%	1.7%	1.2%	0.0%	0.0%	0.0%	15.7%
Total	185	7	8	14	7	8	2	4	235

Osteoarthritis OA, Rheumatoid Arthritis RA, Angylosing Spondylitis AS, Metatraumatic Arthritis MA, Aseptic Loosening AL, Congenital Dislocation of Hip CDH, Slipped Capital Femoral epiphysiolisthesis SCFH, Avascular Necrosis AVN.