PURPOSE To investigate tibial tunnel widening and knee instability after ACL reconstruction with hamstring autograft or irradiated soft tissue allograft. METHODS Eight-two patients were divided into two groups: autograft group and allograft group. Radiographic and clinical evaluations were performed. RESULTS Seventy patients were followed up with median of 36.3 months (range 36-38 months). ...

PURPOSE Tunnel widening after anterior cruciate ligament (ACL) reconstruction is a frequently described phenomenon. The possible etiology is multi-factorial with some mechanical and biological factors. Among those, we intended to determine the relation between the location and orientation of the femoral tunnel and the femoral tunnel enlargement after outside-in single-bundle ACL reconstruction....

To position a single-bundle anterior cruciate ligament reconstruction anatomically on the femoral side while still using a transtibial technique, we recommend performing a posterolateral notchplasty, inserting the tibial aimer through an accessory inferomedial portal, using a more proximal tibial starting point, removing bone from the posterolateral corner of the tibial tunnel, and externally r...

The WasherLoc is a tibial fixation device for soft tissue anterior cruciate ligament (ACL) reconstruction that combines superior fixation properties (945 N strength, 507 N/mm stiffness, and high resistance to slippage) with a simple surgical technique. The WasherLoc is a washer with 13 short spikes that penetrate the soft tissue ACL graft in multiple locations and 4 long peripheral spikes that ...

BACKGROUND Rotational knee movement after reconstruction of the anterior cruciate ligament has been difficult to quantify. The purpose of this study was to identify in vivo whether a more horizontal placement of the femoral tunnel (in the ten o'clock position rather than in the eleven o'clock position) can restore rotational kinematics, during highly demanding dynamic activities, in a knee in w...

OBJECTIVE Determine, through dissection in fresh cadavers, the topographic anatomy of the tibial nerve and its branches at the ankle, in relation to the tarsal tunnel. METHODS Bilateral dissections were performed on 26 fresh cadavers and the locations of the tibial nerve bifurcation and its branches were measured in millimeters. For the calcaneal branches, the amount and their respective nerv...

Peri-articular fractures after anterior cruciate ligament (ACL) reconstructive surgery are rare. To our knowledge, this case documents the first insufficiency fracture of the tibial plateau after ACL reconstruction, which presented three weeks after the procedure. A 25-year-old female recreational soccer player suffered an insufficiency fracture of the tibial plateau, extending 1.5 mm into the ...

The aim of the present study was to evaluate incidence, degree and impact of tibial tunnel widening (TW) on patient-reported long-term clinical outcome, knee joint stability and prevalence of osteoarthritis (OA) after isolated anterior cruciate ligament (ACL) reconstruction. On average, 13.5 years after ACL reconstruction via patella-bone-tendon-bone autograft, 73 patients have been re-evaluate...

The purpose of this study was to evaluate the effect of the AperFix device (Cayenne Medical, Inc, Scottsdale, Arizona), composed of polyetheretherketone (PEEK) polymer, on tunnel widening after hamstring anterior cruciate ligament (ACL) reconstruction as compared with 2 other fixation devices: the TransFix (Arthrex, Inc, Naples, Florida) and the EndoButton (Smith & Nephew Endoscopy, Mansfield, ...

BACKGROUND Characterization of the insertion site anatomy in anterior cruciate ligament reconstruction has recently received increased attention in the literature, coinciding with a growing interest in anatomic reconstruction. The purpose of this study was to visualize and quantify the position of anatomic anteromedial and posterolateral bone tunnels in anterior cruciate ligament reconstruction...