Shoulder extensors

Shoulder extensor 90 40-150 10-60 Decreases rapidly at angles less than 30° As angle decreases, strength increases then levels at 30° to -30°... 

Juvenile dermatomyositis (JDM) is perhaps the most uniform, in terms of clinical and histopathological features, of the whole PM/DM disease complex. Presentation may be before 5 years of age with peak incidence between 8 and 12 years. The disease may remit and recur until well into young adult life. The skin lesions include a facial rash in butterfly distribution across nose and cheeks. Erythematous skin changes are seen over extensor surfaces of joints, especially knees, knuckles and elbows. Muscle involvement is generally evident some time later and takes the form of weakness and stiffness, particularly affecting shoulder and pelvic musculature. Proximal muscles are often worse affected than distal muscles and extensors worse than flexors. In the absence of prompt and effective treatment contractures may occur at elbows, ankles, knees, and hips. Subcutaneous calcification and skin ulceration may be found calcification of deeper-lying connective tissue may be apparent on X-ray. 

FIG. 26-9 Active indirect stretch of the paravertebral muscles using crossed extensor reflex (A) Starting position. (B) Midway through the maneuver, with the patient attempting to bring his chin to his right shoulder as the physician applies isokinetic resistance. (C) A passive stretch ends the technique. 

We affixed four adhesive sensors to each participant (see Figure 4). One sensor was placed on the left side of the upper chest to measure HRV, while the other three sensors were used to measure EMG in the upper fibres of the trapezius in the right shoulder, the extensor carpi radialis in the right forearm, and the tibialis anterior in the lower right leg. 

Superficial lipomas typically appear as compressible, palpable soft-tissue masses in the subcutaneous tissue not adherent with the overlying skin. Lipomas have a male and familial predominance and tend to grow in the hack, shoulder and upper arms with a predilection for the extensor surface. They are more common in the fifth and sixth decades. Although lipomas most often present as a solitary... 

Radiol Clin North Am 37 669-678 Craig JG, Jacobson JA,Moed BR (1999) Ultrasound of fractures and bone healing. Radiol Clin North Am 37 737-751 Craig JG, van Holsbeeck M, Alva M (2003) Gonococcal arthritis of the shoulder and septic extensor tenosynovitis of the wrist sonographic appearances. J Ultrasound Med 22 221-224... 

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