• N N Byl, W Kohlhase, and G Engel.
• Graduate Program in Physical Therapy, School of Medicine, University of California-San Francisco, USA.
• J Hand Ther. 1999 Jul 1; 12 (3): 201-11.

AbstractThe majority of research on distal radius fractures consists of retrospective, descriptive studies of patients with unstable fractures requiring fixation. The purpose of this investigation was to report on impairments in flexibility, grip strength, and motor control and on the presence of swelling and atrophy immediately after cast immobilization of closed reductions of simple distal radius fractures. Sixteen adult subjects from Kaiser Permanente Medical Center, San Francisco, entered the study, and 13 completed it. At the initial evaluation, upper extremity ranges of motion, grip strength, forearm circumferences, two-point discrimination, and motor reaction times were measured on the uninvolved side. The same measurements were taken on the affected side within 48 hours after cast removal. All but one subject worked throughout the casting period. There were significant postcasting impairments in forearm rotation (40% deficit in pronation and supination); wrist flexion, extension, and radial and ulnar deviation (50% reduction in all motions); grip strength (-32 kg, or approximately 24% of the strength of the unaffected side); and forearm circumference (-1.1 cm) and wrist circumference (+1.5 cm). Patients complained of awkwardness of the involved hand. These measured impairments immediately after immobilization of simple radius fractures were greater than the reported impairments in patients after reduction of radius fractures with fixation 6 to 27 months after injury. To prevent long-term disability and recover flexibility, strength, and function, patients with simple distal radius fractures should be referred to a hand, occupational, or physical therapist for evaluation, education, and treatment after immobilization. Longitudinal studies are needed to quantify long-term functional recovery with regard to the type of fracture and the degree of impairment measured immediately after casting.

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