BACKGROUND Abnormal patellar height is associated with anterior knee pain and several conditions that affect the patellofemoral joint. The aim of this study was to 1) report the incidence of patella alta and patella baja and 2) investigate whether the normal limits of the Insall-Salvati ratio is applicable in adult Middle-Easterners. METHODS A radiographic review of the lateral radiographs of...

INTRODUCTION Fracture of the patella, after harvesting the central third of the patellar tendon for a bone-tendon-bone autograft, is a rare complication. MATERIAL AND METHODS We made 1714 reconstructions of the anterior cruciate ligament of the knee using bone-patellar tendon-bone technique, and 7 patients had fracture of the patella (0.42%). The fracture was immediately recognized in the pat...

Purpose: To compare various values in computed tomography (CT) scanning between patella dislocation patients and health controls, to define the difference between the two groups, and to determine the rate of patellofemoral anatomical deformities in patients, providing relevant evidence for the appropriate treatment. Method: 100 health controls and 100 patients with patella dislocation from 2005...

Patellar issues need to be carefully addressed during any revision TKA and the surgeon often faces the question of what to do with the patella at the time of revision. The choice of treatment is often made by balancing what is technically feasible with the risk of potential complications and takes into account the reason for the revision, the type of implant (i.e., metal-backing or all-polyethy...

Paediatric patella fractures are uncommon, accounting for less than 1% of all paediatric fractures. This case report describes a previously undocumented patella fracture in a child, with a clear mechanism of injury. We present a case of a previously healthy 14-year-old boy who fell directly onto his right knee after coming off his pushbike. He sustained an isolated fracture involving the articu...

BACKGROUND Attempts to relate patellar cartilage involvement to anterior knee pain (AKP) have yielded conflicting results. We determined whether the condition of the cartilage of the patella at the time of knee replacement, as assessed by the OARSI score, correlates with postsurgical AKP. PATIENTS AND METHODS We prospectively studied 100 patients undergoing knee arthroplasty. At surgery, we p...

The purpose of this study was to compare the knee extensor mechanics in persons with and without patella alta. Thirteen subjects with patella alta and 14 subjects with normal patellar position participated in the study. Sagittal and axial MR images of the knee were acquired at 0 degrees , 20 degrees , 40 degrees , and 60 degrees of knee flexion. Measurements of actual moment arm, patellar ligam...

The diagnosis of sex and age-at-death from the adult human skeleton is very important in the field of physical and forensic anthropology for the identification of a human body. Three studies of the diagnosis of the patella reporting an accuracy of approximately 85% have been published; however there is no study about diagnosis of the age-at-death on the basis of morphology of the patella. The p...

The authors present a case of a proximal avulsion fracture of the patella two months after a combined proximal and distal realignment operation. Devascularisation of the patella due to the combined technique was considered the main pathogenic factor. Treatment with open reduction and transosseous fixation was successful.