CPT® Code 27422

Reconstruction of dislocating patella; with extensor realignment and/or muscle advancement or release (eg, Campbell, Goldwaite type procedure)

The procedure described by CPT® Code 27422 involves the reconstruction of a dislocating patella, which is a condition where the kneecap (patella) moves out of its normal position, often leading to pain and instability in the knee joint. This surgical intervention is specifically aimed at correcting the alignment of the patella through extensor realignment and/or muscle advancement or release. The procedure may also be known by other names, such as the Campbell or Roux-Goldwaite procedure, which are specific techniques used to address this issue. During the surgery, the patellar tendon is manipulated to achieve a more medial position of the patella, thereby preventing it from shifting laterally. This is accomplished by detaching and repositioning the lateral half of the patellar tendon. Additionally, if muscle advancement is necessary, the vastus medialis muscle, part of the quadriceps group, is dissected and advanced to improve the stability and tracking of the patella. The procedure may also involve an osteotomy, which is the surgical cutting of bone, to reposition the tibial tubercle, ensuring that the patella tracks properly during movement. Overall, this reconstruction aims to restore normal function and alleviate symptoms associated with a dislocating patella.