Final answer:
The number of pushlock sizes for shoulder-related repairs typically varies as orthopedic suppliers offer various sizes for different surgical needs, and without a specific context, it is not possible to provide an accurate number.
Step-by-step explanation:
The question on how many sizes of pushlocks are available for shoulder-related repairs is specific to the field of orthopedic medicine, particularly in surgical techniques for repairing shoulder injuries. While the provided information is somewhat unclear, it references a shrinkage of material when pushed, which could imply a comparison of pushlock sizes in a surgical context.
Generally, pushlocks used in orthopedic surgery come in various sizes to accommodate different types of tissues and repair techniques. However, without specific context or a reliable source, it is not possible to accurately state the number of pushlock sizes available for shoulder-related repairs. Orthopedic suppliers typically offer an array of sizes to suit different surgical needs.
The question is asking about the number of sizes of pushlocks available for shoulder-related repairs. However, there is no clear information provided in the given reference to determine the specific answer. Therefore, I cannot provide a definitive answer based on the given information.