Sonoma Orthopedics, a stealthy spinal-device maker in Santa Rosa, Calif., raised at least $10 million in a second funding round, VentureWire reports. The company raised $3 million in a first round last April.

Sonoma Orthopedics is at work on devices that repair or reinforce bones from the inside. MedVenture Associates led the round, and was joined by existing investors EDF Ventures, Asset Management, Halo Fund and Angel's Forum.