Arthroscopic trochleoplasty is a keyhole procedure in patients with trochlear dysplasia to improve the shape of the top of the groove where the kneecap runs.
In some people the upper end of the groove may be deformed, making it easier for the patella to sublux or dislocate. It may be abnormally flat or even heaped into a bump, as in this example.
Absorbable tapes are used to hold the white cartilage against the re-shaped bone until healing takes place.
Is arthroscopic trochleoplasty a common procedure?
The procedure is only performed in centres that specialise in problems of the patella.
Arthroscopic deepening trochleoplasty for chronic anterior knee pain after previous failed conservative and arthroscopic treatment. Report of two cases Lars Blønd. Int J Surg Case Rep. 2017; 40: 63–68.
Trochleoplasty: Indications and Technique. Nolan,JE III, Schottel PC and Endres NK. Curr Rev Musculoskelet Med. 2018 Jun; 11(2): 231–240.
Dr Lars Blønd, pioneer of this procedure, discusses arthroscopic trochleoplasty.