Level III, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.

This report documents a rare case of isolated trochlear shear fracture in an adolescent patient and provides a literature review. Radiographic analysis of the distal humerus revealed an intra-articular fracture of the anterior trochlea, evidenced by a full moon-shaped osteochondral fragment. Open reduction and internal fixation with two headless Herbert screws secured the fragment. Because of the paucity of information on this injury, standard treatment and management have not been established. Prospective studies with longer follow-up are needed before a consensus with regard to these fractures is established.

Level III--retrospective review.

Results from the present study provide initial support for the use of automated quantified data collected from CPDs to evaluate treatment interventions and to serve the clinician as a record of changes in spatial location, radiation or extent of pain, and the sensory quality of pain when evaluating individual patient needs.

Supracondylar humerus fractures occur frequently in children and can be repaired by the lateral or crossed pinning technique, although the importance of pin divergence is unknown. A surgeon's experience using the crossed (N=46) and lateral (N=57) pinning technique was reviewed to determine whether the pin-spread ratio (PSR), the distance between the pins at fracture level divided by the fracture width, was associated with fixation loss. No association existed between the PSR and change in Baumann's angle for fractures repaired by lateral pinning, although one existed for type III fractures repaired with crossed pinning. The PSRs employed in pediatric supracondylar humerus repair appear sufficient for fixation.