Table 1.

Patient Demographics.

Patient No.	Sex	Age (yr)	Side	Duration of bisphosphonate use (mo)	Pre op bowing angle (deg) Anterior	Pre op bowing angle (deg) Lateral	Level of fracture	Callus pattern	Nail entry	Complication	Follow-up (mo)
1	F	75	L	108	6.99	5.40	Proximal	Endosteal	Antegrade	None	21.83
2	F	85	R	None	17.61	16.17	Middle	Endosteal	Retrograde	None	15.80
	F	85	L	None	14.05	19.08	Proximal	Endosteal	Antegrade	None	15.80
3	F	64	R	None	4.41	15.42	Proximal	Endosteal	Antegrade	None	24.30
4	F	83	L	41	14.77	16.91	Distal	Endosteal	Retrograde	Insertion site fracture	20.50
5	F	88	L	56	7.96	12.40	Middle	Periosteal	Retrograde	None	36.67

Abbreviations: Pre op, preoperative; deg, degrees; yr, years; mo, months.