coexisting ankylosing spondylitis and hereditary multiple exostoses have rarely been reported (three patients) previously. a 27-year-old man with hereditary multiple exostoses is presented as a fourth report. at the age of 15 years, the patient had multiple exostoses around the knee, ankle and shoulder joints. he was diagnosed with ankylosing spondylitis 3 years ago. the patient’s sister and hi...

conclusions bilateral anterior shoulder dislocation is rare. it could be undiagnosed, especially when there is no clear history of major trauma. by awareness of such unusual possibility, early diagnosis, treatment, and reduction can provide desirable outcome. introduction shoulder dislocation is the most common presentation of joint dislocation in emergency department (ed). bilateral shoulder d...

Volume 83, Number 10 www.aafp.org/afp American Family Physician 1203 A 61-year-old woman presented with a history of chronic pain and stiffness in multiple joints. She had morning stiffness in her hands, hips, and knees that gradually improved with activity. She did not report any foot pain or stiffness, fever, or rash. On examination she had swelling around the distal interphalangeal joints in...

Selective laser melting technology is one of the metal additive manufacturing technologies that can convert powder to complex parts without assembly process. This study aims optimize volumetric energy density for printing 3D objects with hinges geometry. The material stainless steel 316L powder. densities ranging from 4.1 J/mm3 119.1 are applied fabricate free-assembled various clearances 0.38 ...

Background. Effective kick-topspin serving in tennis requires power to transfer mechanical energy through a kinematic chain from different parts of the body that is directly related to the kinetics of the joints. Energy flow analysis is a powerful tool for observing the mechanical energy transfer through the body parts. Objectives. This research aimed to study the correlation and predictive ab...