Detailed Instructions: Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Problem:Abstract: The St Georg modular knee replacement has been studied in 59 cases with an observation period ranging from 28 to 73 months. In 47% of the knees both compartments were replaced; five of the six poor results were in this group. These were revised to a hinge arthroplasty or, in one case, to an arthrodesis. Other complications were few and insignificant. There were no infections. We concluded that unicompartmental knee arthroplasty can be recommended when joint involvement is localised to one compartment only. With more generalised joint disease we prefer a semiconstrained total condylar prosthesis.
Which is the apt title for the abstract? option1: St Georg modular knee prosthesis. A two-and-a-half to six-year follow-up. option2: Angiofibroma: treatment trends in 150 patients during 40 years.
Solution:
St Georg modular knee prosthesis. A two-and-a-half to six-year follow-up.