Comparison of five patellar height measurement methods in 90° knee flexion
Open Access
- 17 March 2011
- journal article
- research article
- Published by Springer Science and Business Media LLC in International Orthopaedics
- Vol. 35 (12), 1791-1797
- https://doi.org/10.1007/s00264-011-1236-4
Abstract
The aim of this prospective study was to evaluate the patellar height in 90° knee flexion. A total of 85 patients with 95 knee joints were included in the study. Patellar height was measured according to the Blackburne-Peel, Labelle-Laurin, Insall-Salvati, Linclau, and Caton-Deschamps methods in the whole group and in subgroups based on age, gender, and side. The BP-ratio showed a patella norma in 45 cases, and in 25 cases a patella alta and infera, respectively. The Labelle-Laurin method determined a patella norma in eight knees, in 35 a patella alta and in 52 a patella infera. The IS-ratio revealed a patella norma in 52 patients, a patella alta in six and in 37 a patella infera. The Linclau method demonstrated in 52 cases a patella norma, in 17 a patella alta and in 26 a patella infera. The CD-ratio showed the highest values of a patella norma among all tested methods in 67 knees, whereas a patella alta was evident in 13 and a patella infera in 15 cases. In the subgroups, discrepancies depended on the subgroup and method used. Our results demonstrate a method-dependent discrepancy in the measurement of patellar height. A future study should evaluate this effect in a direct comparison between 30° and 90° knee flexion.Keywords
This publication has 41 references indexed in Scilit:
- Tibial tubercle osteotomy in patello-femoral instability and in patellar height abnormalityInternational Orthopaedics, 2010
- Correction accuracy and collateral laxity in open versus closed wedge high tibial osteotomy. A one-year randomised controlled studyInternational Orthopaedics, 2009
- The effect of quadriceps contraction during weight-bearing on four patellar height indicesThe Journal of Bone and Joint Surgery. British volume, 2008
- Interobserver variation in the measurement of patellar height after total knee arthroplastyThe Journal of Bone and Joint Surgery. British volume, 2006
- Patellar height and the inclination of the tibial plateau after high tibial osteotomyThe Journal of Bone and Joint Surgery. British volume, 2005
- Patellar Height Ratios in ChildrenJournal of Pediatric Orthopaedics B, 1999
- Patellar Height RatiosThe American Journal of Sports Medicine, 1996
- The Early Diagnosis and Treatment of Developmental Patella Infera SyndromeClinical Orthopaedics and Related Research, 1991
- Surgical Interruption of Patellar Blood Supply by Total Knee ArthroplastyPublished by Ovid Technologies (Wolters Kluwer Health) ,1988
- Mechanics of the patellar articulation Effects of patellar ligament length studied with a mathematical modelActa Orthopaedica, 1987