With medial unicompartmental osteoarthritis (OA) there is occasionally a full-thickness ulcer of the cartilage on the medial side of the lateral
Aims. The transepicondylar axis is a well-established reference for the determination of femoral component rotation in total knee arthroplasty (TKA). However, when severe bone loss is present in the
Coronal plane fractures of the posterior femoral
condyle, also known as Hoffa fractures, are rare. Lateral fractures are
three times more common than medial fractures, although the reason
for this is not clear. The exact mechanism of injury is likely to
be a vertical shear force on the posterior
The purpose of this study was to evaluate the
long-term functional and radiological outcomes of arthroscopic removal
of unstable osteochondral lesions with subchondral drilling in the
lateral
We describe the mid-term results of a prospective study of total knee replacement in severe valgus knees using an osteotomy of the lateral
We reviewed lesions of the
In a prospective randomised trial 76 knees with isolated degenerative changes in the medial
Four children are described, each with spontaneous osteonecrosis affecting nearly one-third of the lateral
We reviewed seven patients with coronal fractures of the lateral
Twenty patients with an average age of eighteen and a half years sustained osteochondral fractures of the lateral
Focal femoral inlay resurfacing has been developed
for the treatment of full-thickness chondral defects of the knee. This
technique involves implanting a defect-sized metallic or ceramic
cap that is anchored to the subchondral bone through a screw or
pin. The use of these experimental caps has been advocated in middle-aged
patients who have failed non-operative methods or biological repair
techniques and are deemed unsuitable for conventional arthroplasty
because of their age. This paper outlines the implant design, surgical
technique and biomechanical principles underlying their use. Outcomes
following implantation in both animal and human studies are also reviewed. Cite this article:
Aims. Minimally manipulated cells, such as autologous bone marrow concentrates (BMC), have been investigated in orthopaedics as both a primary therapeutic and augmentation to existing restoration procedures. However, the efficacy of BMC in combination with tissue engineering is still unclear. In this study, we aimed to determine whether the addition of BMC to an osteochondral scaffold is safe and can improve the repair of large osteochondral defects when compared to the scaffold alone. Methods. The ovine
Objectives. Throughout the 20th Century, it has been postulated that the knee moves on the basis of a four-bar link mechanism composed of the cruciate ligaments, the femur and the tibia. As a consequence, the femur has been thought to roll back with flexion, and total knee arthroplasty (TKA) prostheses have been designed on this basis. Recent work, however, has proposed that at a position of between 0° and 120° the medial
Aims. To determine the relationship between articular cartilage status and clinical outcomes after medial opening-wedge high tibial osteotomy (MOHTO) for medial compartmental knee osteoarthritis at intermediate follow-up. Methods. We reviewed 155 patients (155 knees) who underwent MOHTO from January 2008 to December 2016 followed by second-look arthroscopy with a mean 5.3-year follow-up (2.0 to 11.7). Arthroscopic findings were assessed according to the International Cartilage Repair Society (ICRS) Cartilage Repair Assessment (CRA) grading system. Patients were divided into two groups based on the presence of normal or nearly normal quality cartilage in the medial
Objectives. We studied subchondral intraosseous pressure (IOP) in an animal model during loading, and with vascular occlusion. We explored bone compartmentalization by saline injection. Materials and Methods. Needles were placed in the
Aims. The purpose of this study was to explore the correlation between femoral torsion and morphology of the distal
Aim. Nail patella syndrome (NPS) is a skeletal dysplasia with patellofemoral
dysfunction as a key symptom. We present the first in-depth radiological
evaluation of the knee in a large series of NPS patients and describe
the typical malformations. Patients and Methods. Conventional radiological examination of 95 skeletally mature
patients with NPS was performed. Patellar morphology was classified
according to the Wiberg classification as modified by Baumgartl
and Ficat criteria, and trochlear shape was classified according
to the Dejour classification. Results. Patellar aplasia was present in 4/90 (4%), and patellar hypoplasia
in 77/90 (86%) of patients. The prevailing patellar shapes were
type III, type IV and Hunter’s cap. No patellar shape genotype-phenotype
association could be found. The malformations of the distal femur
comprised shortening of the lateral
We have previously developed a radiographic technique, the oblique posterior condylar view, for assessment of the posterior aspect of the