Risk factors for failure after open reduction for DDH: a matched cohort analysis.

Background: No controlled data exists regarding the risk factors for redislocation after a technically proficient open reduction for developmental dysplasia of the hip (DDH). The purposes of this study were to examine predictors of redislocation and to evaluate the long-term outcomes after revision surgery.

Methods: We performed a retrospective match-controlled study comparing 22 patients who had successful open reduction for DDH with 22 who required revision open reduction.

Results of meniscal repair using a bioabsorbable screw.

Purpose: With most all-inside arthroscopic meniscal repair devices, the surgeon has no need for additional incisions or arthroscopic knot tying, and surgical time is decreased compared with traditional suture repair. Although previous studies have examined the pullout strength of various all-inside devices, clinical data is lacking and has been presented for only a few implants. This study evaluates the clinical results of meniscal repair using a bioabsorbable screw.

The effect of femoral tunnel position on graft forces during inlay posterior cruciate ligament reconstruction.

Background: The femoral tunnel may be positioned centrally or eccentrically within the posterior cruciate ligament footprint during a single-bundle posterior cruciate ligament reconstruction.

Hypothesis: After reconstruction, graft forces are significantly different from those of the native posterior cruciate ligament and are affected by the position of the femoral tunnel.

Study Design: Controlled laboratory study.

Biomechanical effects of medial-lateral tibial tunnel placement in posterior cruciate ligament reconstruction.

With most posterior cruciate (PCL) reconstruction techniques, the distal end of the graft is fixed within a tibial bone tunnel. Although a surgical goal is to locate this tunnel at the center of the PCL's tibial footprint, errors in medial-lateral tunnel placement of the tibial drill guide are possible because the position of the tip of the guide relative to the PCL's tibial footprint can be difficult to visualize from the standard arthroscopy portals. This study was designed to measure changes in knee laxity and graft forces resulting from mal-position of the tibial tunnel medial and lateral to the center of the PCL's tibial insertion.

Biomechanical comparison of tibial inlay and tibial tunnel techniques for reconstruction of the posterior cruciate ligament. Analysis of graft forces.

Background: The tibial inlay technique of reconstruction of the posterior cruciate ligament offers potential advantages over the conventional transtibial tunnel technique, particularly with regard to the graft force levels that develop over a functional range of knee flexion. Abnormally high graft forces generated during rehabilitation activities could lead to stretch-out of the graft during the critical early healing period. The purpose of this study was to compare graft forces between these two techniques and with forces in the native posterior cruciate ligament.

A biomechanical comparison of tibial inlay and tibial tunnel posterior cruciate ligament reconstruction techniques: graft pretension and knee laxity.

Background: Most posterior cruciate ligament reconstruction techniques use a tibial bone tunnel, which results in an acute bend in the graft as it passes over the posterior portion of the tibial plateau.

Hypothesis: The tibial inlay technique will result in lower graft pretensions, less laxity, and less stretch-out after cyclic loading.

Study Design: Controlled laboratory study.