title: Antero-medialisation of the tibial tubercle for patellar instability.
abstract: We reviewed 19 patients (24 knees) with patellofemoral instability treated surgically with antero-medialisation of the tibial tubercle and lateral retinacular release. Twenty-two knees had recurrent patellar dislocation and two patellar subluxation. Lateral retinacular release was performed arthroscopically in 15 knees. Average follow-up was 52 (16-86) months. There was one postoperative haemarthrosis and one failed fixation, which needed surgical revision. The average Lysholm score improved from 63.3 to 98 and only one knee had persistent patello-femoral pain postoperatively. The patellar tilt angle improved from 9.4 degrees to 5.5 degrees . There were no redislocations. We find that the surgical technique produces a consistent correction of patellar instability, but long-term studies are needed to confirm whether it can prevent arthritic degeneration.
authors.affiliation: Department of Orthopaedics, Hospital de Curry Cabral, Rua da Beneficiência 8, 1069-166, Lisbon, Portugal. pedrodantas@oninet.pt
authors.forename: Pedro
authors.initials: P
authors.lastname: Dantas
authors.forename: Carla
authors.initials: C
authors.lastname: Nunes
authors.forename: João
authors.initials: J
authors.lastname: Moreira
authors.forename: Luís Branco
authors.initials: LB
authors.lastname: Amaral
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D005260:Female; D005269:Femur / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D004204:Joint Dislocations / Q000503:physiopathology / Q000601:surgery*; D007593:Joint Instability / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D010027:Osteotomy / Q000379:methods*; D010147:Pain Measurement; D010329:Patella / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome