Michael Dawson was withdrawn early in the second half of the 1-1 draw after taking a couple of knocks to the head just a fortnight after suffering mild concussion against Portsmouth.
Calum Davenport was on the end of a kick in the face inside the first minute and Martin later reported that he played the rest of the match with a broken nose. To add insult to injury, Calum was later sent off for a foul on Gabriel Agbonlahor.
With those two injuries sustained at Villa Park, it's no surprise that Martin is hoping Ledley will recover from having fluid on the knee after his fine display for England last weekend in time for our opening UEFA Cup fixture in Istanbul. At least Anthony Gardner is back from a hip problem and in the squad this weekend.
Martin said: "Michael took a couple of knocks and we didn't want to take a risk with him and Calum broke his nose, so that didn't help.
"Hopefully he'll be okay and I also have at the back of my mind that Ledley could be ready for Besiktas on Thursday. We will assess them all this week."
Michael and Calum weren't the only problem though - Hossam Ghaly suffered a hamstring injury and was substituted just before the hour. "He pulled his hamstring, so he's probably out for Thursday now," added Martin. "It's a pity because I thought he played well in the first half."
There was some positive news though - Hossam was replaced by Aaron Lennon, the winger's first appearance since undergoing knee surgery last month.
Martin Jol has his fingers crossed that Ledley King will be fit to face Besiktas on Thursday after our central defenders took a bit of a battering at Villa.