Introduction Instability - reported as a feeling of buckling or giving way - is a commonplace symptom in osteoarthritic (OA) knees, being found in up to 72% of individuals. 1 – 5 In an attempt to understand and treat instability, either
David T. Wallace, Philip E. Riches, and Frédéric Picard
Felix H. Savoie and Michael O’Brien
Introduction Valgus instability of the elbow is common in United States baseball pitchers and is not infrequent in gymnasts, javelin throwers, other overhead athletes and wrestlers. Although trauma more commonly affects the lateral side
Joaquín Sanchez-Sotelo and Mark Morrey
Introduction Traumatic elbow injuries commonly result in damage to several of the elbow structures involved in joint stability. Persistent elbow instability after injury often results in pain, poor function and progressive joint degeneration
Megan Conti Mica, Pieter Caekebeke, and Roger van Riet
Introduction Posterolateral rotatory instability (PLRI) was first described by O’Driscoll et al, 1 and while it is relatively uncommon, it is the most common form of chronic elbow instability. The lateral collateral ligament (LCL) complex
Abdul-ilah Hachem, Andres Molina-Creixell, Xavier Rius, Karla Rodriguez-Bascones, Francisco Javier Cabo Cabo, Jose Luis Agulló, and Miguel Angel Ruiz-Iban
Introduction Isolated posterior instability is reported as being the least common of all glenohumeral instabilities, representing from 2 to 10% of all cases ( 1 , 2 ). In certain demographic groups, such as athletes in contact sports, rowers
Kaustubh Ahuja, Syed Ifthekar, Samarth Mittal, Gagandeep Yadav, Bhaskar Sarkar, and Pankaj Kandwal
Introduction Spinal instability constitutes an important indication for surgical stabilization in a number of spinal pathologies. Since the time of the description of the ‘middle path regime’ by Tuli in 1975, spinal instability has constituted
Emilio Calvo, María Valencia, Antonio Maria Foruria, and Juan Aguilar Gonzalez
Introduction The Latarjet procedure is a surgical technique especially recommended for patients with anterior recurrent instability in the presence of a critical glenoid bone loss ( 1 , 2 ). It can also be considered the treatment of choice
Nuno Corte-Real and João Caetano
Introduction Ankle instability is a clinical condition closely related with the traumatic event commonly known as ankle sprain, usually a supination trauma. This event is extremely frequent, being one of the top causes of Emergency Room visits
Mohamed G. Morsy
recurrent anterior glenohumeral dislocations. 2 , 3 It has been reported that humeral head defects contribute to anterior shoulder instability in 40% to 70% of patients with a first-time dislocation, and up to 90% of recurrent cases. 4 , 5
Giovanni Di Giacomo, Luigi Piscitelli, and Mattia Pugliese
concavity were further studied by Moroder et al 21 , 22 and Peltz et al, 23 whose studies established a correlation between the loss of glenoid concavity and instability: in fact, both in traumatic and atraumatic shoulder instability, the glenoid
