Patella Baja in Total Knee Arthroplasty. Issue 8 (15th April 2020)

• Record Type: Journal Article
• Authors: Lum, Zachary C.; Saiz, Augustine M.; Pereira, Gavin C.; Meehan, John P.
• Is Part Of: Journal of the American Academy of Orthopaedic Surgeons. Volume 28:Issue 8(2020)
• Publication Date: 2020-04-15
• Subjects: Orthopedics -- Periodicals; Orthopedic surgery -- Periodicals; Joint Diseases -- Periodicals; Orthopedics -- Periodicals; Orthopedic surgery; Orthopedics; Periodicals; 616.7005
• DOI: 10.5435/JAAOS-D-19-00422
• Languages: English
• ISSNs: 1067-151X

Abstract

Abstract : Patella baja in total knee arthroplasty can result in impingement, pain, and decreased range of motion. Etiology can range from previous knee surgeries such as anterior cruciate ligament reconstruction, retrograde femoral nail, infrapatellar fat pad resection, and previous total knee arthroplasty. Diagnosis can be confirmed by one of a number of measurements of patellar height including Insall-Salvati and Blackburne-Peel ratios. It is important to differentiate between true patella baja and pseudopatella baja by patellar height ratio. Treatment includes correct identification of the underlying etiology and appropriate management. Surgical management strategies include tibial tubercle osteotomy, distal femoral augment and revision, proximalization of the patellar component, modification of the anterior tibial component, and/or Z-plasty of the patellar tendon. We review the outcomes for each of these procedures.