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* FTSE 100 up 0.1 pct
* Smith & Nephew down after results
* Thomas Cook weighs on mid caps
By Kit Rees
LONDON, Feb 9 (Reuters) - Britain's top share index steadiedon Thursday as falls among mining stocks weighed, while Smith &Nephew dropped after posting disappointing results.
The blue chip FTSE 100 index was up 0.1 percent at7,192.70 points by 1028 GMT, underperforming the broaderEuropean market.
Artificial hip and knee maker Smith & Nephew booked a7 percent drop in full-year trading profit, missing analysts'forecasts, hit by difficult market conditions in China and SaudiArabia.
Its shares dropped 2.4 percent to a 2-month low, poised fortheir biggest one-day loss since November.
"Expectations were fairly low running into these results, inour view, and the results did little to change that," Berenberganalysts said in a note.
"The company has spent the last 4-5 years restructuring,reorganising and refocusing and this process is now complete. Ifgrowth does not develop as expected in 2017, then itsshareholders are likely to permanently reassess the growthpotential of this business in its current form."
Among smaller companies, results also weighed on travel firmThomas Cook, which slumped more than 8 percent, puttingit on track for its biggest one-day loss since late June. Themid cap FTSE 250 index declined 0.2 percent.
While the tour operator said that summer bookings were aheadof last year, Thomas Cook was cautious on the outlook for therest of 2017 given an uncertain political and economic outlook.
Security concerns in previously popular destination Turkeycontributed to Thomas Cook's shares losing nearly 30 percent oftheir value in 2016.
"They're successfully relocating their revenue streams awayfrom an emphasis on Turkey which was causing them quite a bit ofissues last year," Jonathan Roy, advisory investment manager atCharles Hanover Investments, said.
"What's taken the shine off of this report ... (is that)they have warned that it's going to be a challenging environmentgoing forward in 2017 with the geopolitical risk in particular,Brexit. That may have an impact on holidaymakers' propensity togo on holiday or take two holidays."
British mining stocks were also under pressure, with AngloAmerican, Antofagasta and Glencoreamong the biggest blue chip fallers, down between 2.5 percent to3.4 percent, tracking the price of copper lower. (Reporting by Kit Rees, Editing by Ed Osmond)
