Ergonomics Flashcards
Neutral posture
Thé joint is being used near the middle of its full range of motion
Supine position
Maxillary treatments - dental chair parallel to floor
Semi-supine position
Mandibular treatment - chair is slightly upright (15-20 degrees)
Chin up position
Maxillary treatment (head and chin same level)
Chin down position
Mandibular treatment (chin is lower than nose level)
Thoracic outlet syndrome
Fingers, hand, wrist compression of branchial nerve between neck and shoulder. Leaning head forward, hunching, reaching over head
Rotator cuff syndrome
Inflammation of muscle tendons in shoulder due to holding elbow above waist level, upper arm away from body
Pronator syndrome
Wrist and hand compression of median nerve between pronator muscle, holding lower arm away from body
Extensor wad strain
Fingers due to injury of extensor muscles, extending fingers away from each-other
Carpal tunnel
Wrist and hand, compression of median nerve within carpal tunnel of wrist, repeatedly bending wrist, pinching, gripping w no rest
Ulnar nerve impairment
Lower arm and wrist, compression of ulnar nerve, bending hand up, holding little finger away from spand
Tenosynovitis
Inflammation of tendons on side of wrist and thumbs,due to hand twisting, forceful gripping, bending hand
Tendinitis
Inflammation of tendons in wrist from strain, extending hands up or down at wrist
Mandibular anterior toward
8-9, chin down turned left or right
Max ant toward
8-9 chin up, left or right
