In vivo knee rotational stability 2 years after the ACL reconstruction using a quadriceps tendon graft with bone block and bone-patellar tendon-bone graft.

Introduction: The aim of this prospective randomised study was to evaluate clinical results and rotational stability at least 2 years after single-bundle anatomic anterior cruciate ligament reconstruction using a quadriceps tendon graft with bone block (BT) and bone-patellar tendon-bone graft (BTB).

Materials And Methods: In both groups (BT and BTB), 40 patients selected prospectively at random were evaluated. The mean follow-up after the surgery was 28 months (range 24-33 months).

Topping Phenomenon with Recurrent Spinal Stenosis and Epidural Fibrosis Prevented with Oxidized Cellulose - a Case Report.

Lumbar spinal stenosis is a condition where the neural structures are compressed in the narrowed spinal canal and often situated only within a single specific segment of the spine, most frequently in the lumbar spine. A case report demonstrates a surgical solution of lumbar spinal stenosis with using oxidized cellulose as a prevention of post-operative adhesions and failed back syndrome. A female patient (68) with a significant pain of the lumbar spine lasting for a number of months due to advanced spondylosis, failing to respond to conservative treatment underwent instrumented, posterolateral fusion of affected segments.

Allograft alone versus allograft with bone marrow concentrate for the healing of the instrumented posterolateral lumbar fusion.

Background Context: Spondylodesis in the operative management of lumbar spine diseases has been the subject of numerous studies over several decades. The posterolateral fusion (PLF) with pedicle screw fixation is a commonly used procedure.

Purpose: To determine whether the addition of bone marrow concentrate (BMC) to allograft bone increases fusion rate after instrumented posterior lumbar fusion.

Platelet-rich plasma in patients with tibiofemoral cartilage degeneration.

Introduction: Recently an articular cartilage repair has been given much attention in the orthopaedic field. Cartilage regeneration capacity is very limited. Optimal approach seems to be a delivery of natural growth factors.

AM bundle controls the anterior-posterior and rotational stability to a greater extent than the PL bundle - a cadaver study.

Background: The purpose of this study was to evaluate the influence of both bundles of the anterior cruciate ligament (ACL) on knee stability, anterior-posterior translation (APT) and internal (IR) and external (ER) rotation in cadaveric knees using a computer navigation system.

Methods: The APT, IR, and ER of the knees were recorded in the intact condition, the anterolateral bundle (AM) or the posterolateral bundle (PL) deficit condition and in the ACL-deficient condition. The KT-1000 arthrometer was used for APT evaluation.

Outcomes after conventional versus computer-navigated anterior cruciate ligament reconstruction.

Purpose: The purpose of this prospective randomized study was to assess biomechanical, radiographic, and functional results after single-bundle anterior cruciate ligament (ACL) reconstruction by use of a navigation system.

Methods: ACL reconstruction was performed by use of the OrthoPilot navigation system (B. Braun-Aesculap, Tuttlingen, Germany) in 40 patients (group 1); and in another 40 patients, surgery was done by the standard manual targeting technique (group 2).

Intraoperative navigation in hip surface arthroplasty: a radiographic comparative analysis study.

Background: The goal of the current prospective randomised radiological study was to determine the accuracy of conventional and computer-assisted femoral component implantation in surface arthroplasty (SRA).

Methods: We analysed on standard radiographs the femoral component positions after 30 conventional instrumented (Group 1) and 30 navigated (Group 2) SRA femoral components. We evaluated: varus or valgus orientation, horizontal femoral offset and translation of the component.

SPECT scan is a reliable tool for selection of patients undergoing unicompartmental knee arthroplasty.

Purpose: Was to determine the relationship between pre-operative SPECT and intra-operative assessments of tibio-femoral chondral changes.

Methods: One hundred cases had been selected on the following criteria: (1) marked Tc-99 m uptake on the medial compartment and (2) its normal uptake laterally. The cartilage macroscopic condition of tibio-femoral compartments were then recorded during the surgery.

Component position following total hip arthroplasty through a miniinvasive posterolateral approach.

Implant malposition and poor fixation are potential risks of compromising long-term results after total hip arthroplasty performed with a minimally invasive technique. Between September 2000 and February 2002, 120 cemented primary total hip arthroplasties were performed at the authors' institutions in patients with primary osteoarthritis of the hip and with BMI lower than 35. In 60 of these cases selected at random, a posterolateral incision no longer than 10 cm was used.

Mosaicplasty for the treatment of femoral head defect after incorrect resorbable screw insertion.

Articular cartilage lesions and osteochondral defects remain a difficult problem for the patient and physician. A variety of procedures and treatments have been proposed to lessen symptoms and restore the articular surface. The knee joint has been the focus of the vast majority of these cartilage restoration procedures.