LITTLE ROCK — The Arkansas Court of Appeals on Wednesday upheld a Pine Bluff man’s conviction of endangering the welfare of his girlfriend’s 4-month-old son.

Jeremy Myers, now 26, was convicted of first-degree endangering the welfare of a minor in connection with injuries that were found on the boy, identified in the opinion as D.B., when he was admitted to Arkansas Children’s Hospital in May 2014. The injuries included skull fractures, broken ribs, broken legs and a broken wrist.

Myers was sentenced to six years in prison. On appeal, he argued that the judge in his trial in Jefferson County Circuit Court should have instructed the jury that it could find him guilty of the lesser offense of third-degree endangering the welfare of a minor if it found that he had not intended to hurt the boy.

In its opinion Wednesday, a three-judge panel of the Court of Appeals disagreed, saying there was no rational basis for the jury instruction Myers wanted.

“By his own testimony, Myers admitted he had squeezed D.B. the hardest he had ever squeezed him immediately prior to D.B.’s admission to the hospital, where the acute rib fractures were discovered. Myers’s actions were not reckless — they were actions that he purposely undertook after he had become upset and frustrated when D.B. would not stop crying,” the court said in the opinion written by Judge David Glover.

After the boy was taken to the hospital and his injuries were discovered, the state Department of Human Services placed an emergency hold on him. A Jefferson County circuit judge later ruled that the boy was dependent-neglected.

The boy’s mother, Jordyn Billingsley of Pine Bluff, appealed the case to the Court of Appeals, which upheld the circuit judge’s ruling in May 2015. The court said the judge did not err in finding that Billingsley failed to take reasonable actions to protect her son from harm.