Cuthbert, M, Ripley, NJ, Suchomel, TJ, Alejo, R, McMahon, JJ, and Comfort, P. Electromyographical differences between the hyperextension reverse-hyperextension. J Strength Cond Res 35(6): 1477–1483, 2021—The aims of this study were to compare muscle activation erector spinae (ES), gluteus maximus (GMax), biceps femoris (BF) during (HE) reverse-HE (RHE) exercises. Ten subjects (age, 23 ± 4 years...

We assessed hyperextension of the knee and joint laxity in 169 consecutive patients who underwent an anterior cruciate ligament reconstruction between 2000 and 2002 and correlated this with a selected number of age- and gender-matched controls. In addition, the mechanism of injury in the majority of patients was documented. Joint laxity was present in 42.6% (72 of 169) of the patients and hyper...

This study investigates how elbow hyperextension affects ball release speed in fast bowling. A two-segment planar computer simulation model comprising an upper arm and forearm + hand was customised to an elite fast bowler. A constant torque was applied at the shoulder and elbow hyperextension was represented using a damped linear torsional spring at the elbow. The magnitude of the constant shou...

BACKGROUND There is concern that high degrees of hyperextension may lead to an increase in graft laxity or graft failure after anterior cruciate ligament (ACL) reconstruction. HYPOTHESIS Patients with a high degree of hyperextension will have a higher rate of graft tear/failure and lower subjective scores after surgery compared with patients with less knee extension. STUDY DESIGN Cohort stu...

Vertebroplasty is often used to treat osteoporotic vertebral compression fractures (OVCF). The number of affected vertebrae can be reduced to a certain extent by some reduction methods including hyperextension and balloon dilation. There have been only a few studies on the effectiveness of vertebroplasty combined with hyperextension or balloon dilation. We collected data of 216 OVCF patients wh...

objective hyperextension of the big toe is described here as a simple and reliable sign to predict undercorrection of cavus deformity of clubfoot in the ponseti method. materials & methods this retrospective study was conducted on children with clubfoot who were treated successfully by ponseti method in the king fahad hospital, saudi arabia, and emam reza hospital, mashad, iran, from 2003 throu...

Diffuse idiopathic skeletal hyperostosis (DISH) is characterized by calcifications and ossification of ligaments and tendon insertions. The patients with DISH are susceptible to spinal column injury with trivial trauma due to immobilization of vertebrae and this easily leads to spinal cord injury. However, only few reports on hyperextension injuries of the thoracolumbar spine with DISH exist. H...

Abstract The “carpal boss” is a variant present in 19% of the population according to cadaveric studies but becomes symptomatic only 1% cases. With rising popularity “yoga,” which includes prolonged hyperextension at wrist joint with weight bearing, an increasing number individuals silent carpal boss dorsal pain due impingement over soft tissues by this innocuous bony protuberance. This warrant...