Cartilage injuries of the patellofemoral joint present a difficult challenge owing to the unique anatomy and high shear forces. Active duty military personnel commonly present with cartilage injuries of the patella and trochlea owing to acute trauma or chronic repetitive injury. The initial treatment for patellofemoral chondral injury is nonoperative modalities to include: rest, activity modifi...

OBJECTIVE To use forward dynamic simulations of forward and backward pedaling in order to determine whether backward pedaling offers theoretical advantages over forward pedaling to rehabilitate common knee disorders.DESIGN. A comparison of knee joint loads was performed during forward and backward pedaling.BACKGROUND. Pedaling has been shown to be an effective rehabilitation exercise for a vari...

We studied the anatomy of the patellofemoral joint in the axial plane on cryosections from a cadaver knee and on MR arthrotomograms from 30 patients. The cryosections revealed differences in the geometry and anatomy of the surface of the articular cartilage and corresponding subchondral osseous contours of the patellofemoral joint. On the MR arthrotomograms the surface geometry of the cartilage...

PURPOSE This research was conducted to compare supine and standing Merchant views, to observe radiographic changes of the patellofemoral joint according to weight-bearing conditions, and to evaluate correlation factors affecting patellofemoral joint indices. MATERIALS AND METHODS Forty-four patients without skeletal problems were selected for this study. Patellar tilt angle, lateral patellofe...

OBJECTIVES To determine the feasibility of assessing patellofemoral osteoarthritis using the 'skyline' view and to compare its reproducibility with the standard lateral view. METHODS Fifty patients attending a rheumatology outpatient department with osteoarthritis of the knee had standard radiographs taken of both knees: standing weightbearing anteroposterior; lateral supine radiograph in 30 ...

The purpose of this study was to determine contact area and mean and peak pressures in the healthy feline patellofemoral joint over the complete range of possible applied force. Furthermore, we wanted to improve upon the repeatability of previous measurements while maximizing the physiological relevance of the results obtained. The patellae and femora were secured in a loading frame approximati...

The patellofemoral joint presents a complex challenge to the surgeon. There are many surgical options for treatment, but none is universally successful in all cases. Tibial tubercle osteotomy has a long history in the distal approach to treating patellar problems. The current approach to the patellofemoral joint continues to evolve. Previous standard measurements and treatments are being re-exa...

BACKGROUND foot orthoses have been described as a possible intervention for individuals with patellofemoral joint pain. No study has attempted to quantify the perceived comfort and support of foot orthoses when used as an intervention for patellofemoral joint pain. METHODS a randomized case-control trial with crossover between contoured and flat orthoses was conducted on ten individuals with ...

BACKGROUND AND PURPOSE There is disagreement in the literature about the importance of patellofemoral joint degeneration and knee pain for the outcome of unicompartmental knee arthroplasty (UKA). We therefore investigated the importance of selected predictors including patellofemoral joint degeneration and the location of preoperative knee pain for the early outcome of UKA. PATIENTS AND METHO...