1. Gellman H, Sie I, Waters R L . Late complications of the weight bearing upper extremity in the paraplegic patient. Clin Orthop 1988; 223: 132-135.
2. Nichols P, Norman P A, Ennis J R . Wheelchair user's shoulder. Scand J Rehabil Med 1979; 11: 29-32.
3. Pentland W E, Twomey L T . The weight bearing upper extremity in women with long term paraplegia. Paraplegia 1991; 29: 521-530.
4. Waring W P, Maynard F M . Shoulder pain in acute traumatic quadriplegia. Paraplegia 1991; 29: 37-42.
5. Burnham R S, May L, Nelson E, Steadward R, Reid D C . Shoulder pain in wheelchair athletes: The role of muscle imbalance. Am J Sports Med 21: 238-242.