Final answer:
A limb can be manually realigned using closed reduction, where a trained medical professional manipulates a broken bone back to its natural position without surgery. In knee replacement surgery, alignment is critical for function and is ensured through precise surgical technique and tools.
Step-by-step explanation:
A limb can be manually realigned in a medical procedure known as closed reduction, which involves the manual manipulation of a broken bone to set it back into its natural position without surgery. This procedure is typically performed by a trained medical professional like an orthopedist, and it occurs under specific circumstances such as to alleviate severe pain, improve function, or reduce risk of further damage prior to definitive surgical care.
In the context of a knee replacement surgery, proper alignment of prosthetic knee components is critical for the functionality of the joint. This alignment is ensured through precise surgical technique and the use of specialized tools during the operation to verify that the components are placed correctly relative to each other and according to the anatomical landmarks of the knee. Medical advancements and understanding of limb development, including the early formation and rotation of limb buds during embryonic development, contribute to the knowledge base necessary for such procedures and highlight the complexity of maintaining proper alignment in both natural and artificial joints.