Many of the spinet pianos made in the 1950's and 1960's were made with a plastic that has become brittle over the years. In many of these pianos the elbows break because of the brittleness and need to be replaced. Replacing these with new, longer lasting plastic elbows is a relatively easy task. All that is needed are the Replacement Elbows and an Elbow Spinner.
The video below shows the process for replacing these elbows.