Because of differences in treatment, prognosis, and long-term follow-up, it is important to preoperatively distinguish simple lipomas from well-differentiated liposarcomas. MRI is highly sensitive in the detection of well-differentiated liposarcomas and highly specific in the diagnosis of simple lipomas. However, when an extremity or body wall lesion is considered suspicious for well-differentiated liposarcoma, it is more likely (64%) to represent one of many benign lipoma variants.

The suprascapular nerve was almost invariably involved (in 97% of shoulders) in patients with PTS. Axillary nerve involvement also was commonly observed (in 50% of shoulders). Subscapular nerve involvement was uncommon (in 3% of shoulders).

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Medial ligament injury is common in knee dislocations. Females who sustain these injuries and patients who have an ultra-low-velocity mechanism should be counseled at the time of injury about the likelihood of inferior outcomes. As ROM deficits are the most commonly encountered complication, postoperative rehabilitation should focus on early ROM exercises as stability and wound healing allow. Future prospective studies are needed to definitively determine whether operative or nonoperative management is appropriate for particular medial ligamentous injury patterns.

Focal extension of normal physeal T1-weighted and gradient echo signal intensity into the adjacent metaphysis is a sign of stress injury in the proximal humeral physis (Little Leaguer's shoulder). Children should suspend the offending sport to allow healing.