Patella baja is a kneecap that is positioned abnormally low.

This is a common complication of total knee replacement. It can also occur after quadriceps muscle weakness, opening-wedge tibial osteotomy, fractures of the tibia, and arthrofibrosis inside the knee.

 

arthrofibrosis and patella baja

patella baja after arthrofibrosis

Synonyms: 
Patella infera
Low-riding patella
-

Arthrofibrosis and Patella Baja

This ebook explains how an abnormally low kneecap result from the inflammatory condition of arthrofibrosis

Imaging and X-rays for patellofemoral pain

Part 6 of a course on Patellofemoral Pain by Dr Ronald Grelsamer of Mount Sinai Hospital in New York.

Differential diagnosis of patellofemoral pain

Part 3 of a course on Patellofemoral Pain by Dr Ronald Grelsamer of Mount Sinai Hospital in New York.

Dr Peter Millett discusses why knee surgeons need to be aware that arthrofibrotic scarring can occur in this area because of the position of their arthroscopic portals (cuts).

An 'interpretation' of a 1991 publication, describing how to recognise the early stages of internal scarring causing the patellar to pull down into an 'infera' position.

-

CLINICAL PUBLICATIONS

Complete excision of the infrapatellar fat pad is associated with patellar tendon shortening after primary total knee arthroplasty. Gwyn R, Kotwal RS, Holt MD, Davies AP. Eur J Orthop Surg Traumatol. 2016 Jul;26(5):545-9.

Changes in patella tendon length over 5 years after different types of knee arthroplasty. Davies GS, et al. Knee Surg Sports Traumatol Arthrosc. 2016 Sep;24(9):3029-35.

Patellar tendon lengthening for patella infera using the Ilizarov technique. In Y, Kim SJ, Kwon YJ. J Bone Joint Surg Br. 2007 Mar;89(3):398-400.