Cam and Pincer Type of Femoroacetabular Impingement.

Femoroacetabular impingement (FAI) has gained considerable attention for the past 20 years and has been accepted as a predisposing factor for early osteoarthritis in young patients, particularly in the population participating in sports. Patients with FAI typically present with deep, intermittent groin discomfort during or after activities involving repetitive or persistent hip flexion. Symptomatic improvement can be achieved from arthroscopic debridement of unstable cartilage flaps, shaving of cartilage irregularities, and surgical correction of deformity of the femoral head\endash neck junction. Early and correct diagnosis of FAI has paramount importance for appropriate and timely management of the disorder before the development of osteoarthritis. Magnetic resonance (MR) imaging offers a noninvasive means of assessing the degree of damage to cartilage and adjacent labrum and bone and also evaluating the effectiveness of treatment. This article describes the morphologic types of FAI with emphasis on MR findings.

A case of neonatal compartment syndrome: importance of early diagnosis in a rare and debilitating condition.

Neonatal compartment syndrome (NCS) is a rare condition that is often initially misdiagnosed because its skin lesions mimic several other more common diseases of the newborn. It has not been described in the pediatric literature thus far. Early diagnosis along with fasciotomy may be limb and function-sparing, but only in certain cases, because the exact time and duration of the initial insult and the full extent of damage at presentation is unknown in many cases. We present a case of NCS that was initially thought to be amniotic band syndrome, and delayed fasciotomy and debridement were performed once the correct diagnosis was made. We review the literature of this rare and debilitating condition and emphasize the importance of early diagnosis and intervention.