Dharwad superintendent of police YS Ravikumar said the girl was admitted to the intensive care unit of the Karnataka Institute of Medical Sciences (KIMS) in Hubli on Thursday.
Dr K Shapura, paediatrician at KIMS, said the child had patches and multiple fractures. "The child is anaemic, but relatively stable and needs at least two months to recover."
The child's rescue was made possible by locals who alerted the police after Sunagar, a construction worker, allegedly threw the baby on the floor. Sunagar, who got married four years ago, has allegedly been harassing his wife too.
The couple has a son, who is apparently well looked after, locals have told the police.