NitroMed ( NTMD) shares slid 17% after the drugmaker posted fourth-quarter results that fell short of expectations. The company reported a loss of $31.6 million, or $1.04 a share, on sales of $3.7 million. Analysts expected a smaller loss of 94 cents a share, with sales of $4.35 million. A year earlier, the company had a loss of $9.7 million, or 36 cents a share, on sales of $9.5 million. Shares were down $1.94 to $9.45. Shares of Hanger Orthopedic ( HGR) rose 8% after the company posted fourth-quarter earnings that topped forecasts by a penny. The company reported a profit of $6.7 million, or 30 cents a share, on sales of $149.2 million. Excluding one-time items, the company earned 14 cents a share. Analysts expected earnings of 13 cents a share. During the year-earlier quarter, the company earned $2.6 million, or 12 cents a share, on sales of $145.9 million. Shares recently had gained 49 cents to $6.75. Other health care volume movers included Pfizer ( PFE), down 19 cents to $26.07; Elan ( ELN), up 1 cent to $13; Boston Scientific ( BSX), down 26 cents to $23.74; Schering-Plough ( SGP), down 18 cents to $18.18; Genta ( GNTA), down 10 cents to $2.72; Generex Biotech ( GNBT), down 12 cents to $2.19; Johnson & Johnson ( JNJ), up 25 cents to $57.91; Novavax ( NVAX), down 31 cents to $5.38; Amgen ( AMGN), down 23 cents to $75.82; Merck ( MRK), up 13 cents to $35.09; and Bristol-Myers Squibb ( BMY), down 8 cents to $22.69.