- Posterior-stabilized (PS) TKA that sacrifice the cruciate ligaments improves pain and function in patients with advanced osteoarthritis.
- Patellar crepitus appears to be due to a spectrum of peripatellar fibrosynovial formations and is usually encountered after PS-TKA, which uniquely has an intercondylar box to accept the tibial post.
- Symptoms of patellar crepitus occur most commonly during terminal knee extension and occur usually from 3 to 9 months after PS-TKA, and in some cases, this phenomenon is symptomatic enough to warrant an arthroscopic procedure or open arthrotomy.
- The development of patellar crepitus after PS-TKA appears related to many factors such as femoral component design, surgical errors, increased postoperative knee flexion, and postoperative patellar baja, which are also responsible for patellar clunk syndrome.
Recommended CitationHwang, MD, Bo-Hyun; Nam, MD, Chang-Hyun; Jung, MD, Kwang-Am; Ong, MD, Alvin; and Lee, MD, Su-Chan, "Is Further Treatment Necessary for Patellar Crepitus After Total Knee Arthroplasty?" (2014). Rothman Institute Conference Posters. Paper 2.