Deepening trochleoplasty and medial patellofemoral ligament reconstruction normalize patellotrochlear congruence in severe trochlear dysplasia

The Bone & Joint Journal
Peter Balcarek, F Zimmermann

Abstract

The aim of this study was to evaluate cartilaginous patellotrochlear congruence and patellofemoral alignment parameters after deepening trochleoplasty in severe trochlear dysplasia. The study group comprised 20 patients (two male, 18 female; mean age 24 years (16 to 39)) who underwent deepening trochleoplasty and medial patellofemoral ligament (MPFL) reconstruction for the treatment of recurrent lateral patellar dislocation due to severe trochlear dysplasia (Dejour type B to D). Pre- and postoperative MRI investigations of the study group were compared with MRI data of 20 age- and gender-matched control patients (two male, 18 female; mean age 27 years (18 to 44)) regarding the patellotrochlear contact ratio, patellotrochlear contact area, posterior patellar edge-trochlear groove ratio, and patellar tilt. Preoperatively, all parameters in the study group indicated significant patellar malalignment, including a reduced patellotrochlear contact ratio (mean 0.38 (0.13 to 0.59) vs mean 0.67 (0.48 to 0.88); p < 0.001), reduced contact area (mean 128 mm2 (87 to 190) vs mean 183 mm2 (155 to 227); p < 0.001), increased patellar lateralization (mean 0.82 (0.55 to 1.0) vs mean 0.99 (0.93 to 1.1); p < 0.001) and increased patellar tilt (me...Continue Reading

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Citations

Nov 19, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Oliver AlvarezClare K Fitzpatrick
Jan 27, 2020·Current Reviews in Musculoskeletal Medicine·Evan E VelliosJennifer J Beck
Jul 3, 2020·Orthopaedic Journal of Sports Medicine·Matthias J FeuchtDaniel P Berthold
Oct 7, 2020·The American Journal of Sports Medicine·Benjamin J LevyJohn P Fulkerson
Aug 28, 2021·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Joaquin Moya-AngelerPaul S Sherbondy

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