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Means and Changes in Patellar Height Indices Pre- and Postoperatively
| Index, Mean ± SD | ||||
|---|---|---|---|---|
| Ratio | Preoperatively | Postoperatively | Mean Absolute Improvement | P Value |
| Insall-Salvati | 1.37 ± 0.2 | 1.33 ± 0.2 | 0.04 | .0005 |
| Blackburne-Peel | 1.0 ± 0.2 | 0.92 ± 0.1 | 0.08 | <.0001 |
| Caton-Deschamps | 1.13 ± 0.2 | 1.04 ± 0.1 | 0.09 | .0003 |
