| Спина её сильно ныла. | Her back ached badly. |
| Спина Пети была чёрная от загара. | Petya's back was brown from the sun. |
NB When the word спина functions as a subject and does not have a descriptive modifier, the construction спина у + Genitive is often preferred to (a) and (b), above: | |
| Спина у неё сильно ныла. | Her back ached badly. |