Anterior cruciate ligament (ACL) reconstruction is a common procedure in daily practice with 75 to 97% excellent long-term results. But in certain cases, some patients perceive rotational instability, for this reason the revision rate can be 10 to 15%. Objectives: evaluate functional outcome in revisions of ACL reconstruction associated with ALL Methods: Between July 2015 and February 2016 (11 ...

Purpose Patellofemoral instability is a common cause of anterior knee pain in adolescents and young adults. Most normal and pathological values for diagnosing patellofemoral instability are based on Western literature. We conducted this radiological study to determine normal values for different patellofemoral parameters in a Korean population and to evaluate their usefulness in diagnosis. Ma...

Adolescent idiopathic scoliosis is regarded as a multifactorial disease and none of the many suggested causal etiologies have yet prevailed. I will suggest that adolescent idiopathic scoliosis has one common denominator, namely that initial curve development is mediated through one common normal physiological pathway of thoracic rotational instability. This is a consequence of gender specific n...

Aims. To investigate the stability and angular momentum transport by the strato-rotational instability in the nonlinear regime. Methods. The hydrodynamic compressible equations are solved in a cartesian box in which the outer cylinder is embedded. Gravity along the rotation axis leads to density stratification. No-slip boundary conditions are used in the radial direction, while free-slip condit...

The purpose of the current study was to create a multidirectional glenohumeral instability model and compare anterior capsulolabral reconstruction with inferior capsular shift with respect to their effects on glenohumeral translation and rotational range of motion. Ten fresh frozen cadaveric shoulders were used with a custom shoulder translation testing jig. To create the multidirectional insta...