We treated 13 patients who had a fixed valgus deformity of the knee with a semiconstrained total knee arthroplasty combined with advancement of the lateral collateral ligament by means of a lateral femoral condylar sliding osteotomy. At follow-up of between one and 6.5 years all patients were assessed using the Knee Society score. The mean knee score improved from 32 to 88 and the functional sc...

To assess migration of the tibial component we used roentgen stereophotogrammetric analysis in 40 patients who had had a total knee arthroplasty after failure of a closing wedge osteotomy and compared them with 40 matched patients after primary total knee arthroplasty. We found no difference in migration over time or in the tendency for continuous migration between the two groups. There were no...

Special Surgery focuses on the application of sound principles in orthopaedic care. The principles emerging in the promising advances in knee joint restoration and preservation are evident in the first case: Scott Rodeo uses osteotomy and allograft transplants to restore alignment, the knee articular surface and meniscus in a young female athlete. The next case involves the knee of a patient wi...

INTRODUCTION: Knee osteoarthritis (OA) is a disabling disorder affecting up to 13% of individuals aged 65 years and older [1]. The medial compartment is most commonly affected. Many researchers suggest contributing biomechanical factors in the development of knee OA include body weight, knee alignment, muscle strength, knee kinematics, and strenuous activities [1-2]. Although gait and mechanica...

High tibial osteotomy (HTO) has traditionally been performed to correct the mechanical axis of the knee in patients with osteoarthritis (OA) of the medial compartment associated with pain and functional impairment; in these patients the restoration of the alignment was related to the regeneration of the articular cartilage that seemed apparently normal (Fujisawa et al., 1979; Odenbring et al., ...

OBJECTIVE Physiological magnetic resonance imaging (MRI) under loading or knee malalignment conditions has not been thoroughly investigated. We assessed the influence of static loading and knee alignment on T2 (transverse relaxation time) mapping of the knee femoral cartilage of porcine knee joints using a non-metallic pressure device. METHODS Ten porcine knee joints were harvested en bloc wi...

BACKGROUND Table tennis involves adoption of the semi-flexed knee and asymmetrical torsional trunk movements creating rotational torques on the knee joint which may predispose players to osteoarthritis (OA) of the knee. This study aims to compare radiographic signs of knee OA and associated functional levels in ex-elite male table tennis players and control subjects. METHODS Study participant...

This was Presented in 5th International Congress of Iranian Iranian Society of Knee Surgery, Arthroscopy, and Sports Traumatology (ISKAST), 14-17 Feb 2018- Kish, Iran