Translate the given Spanish text to English

Let me give you an example: A method for converting a series of m-bit information words to a modulated signal is described.
The answer to this example can be: Se describe un método para convertir una serie de palabras de informacion de bits m a una señal modulada.
Here is why: The translation is fluent, formal, and accurate

OK. solve this:
Medical appliance for dorsolumbar traction.
Answer:
APARATO MEDICO PARA TRACCION DORSO-LUMBAR.