Femoroacetabular impingement

Abstract

The femoroacetabular impingement (FAI) is as condition recently characterized that results from the abnormal anatomic and functional relation between the proximal femur and the acetabular border, associated with repetitive movements, which lead labrum and acetabular cartilage injuries. Such alterations result from anatomical variations such as acetabular retroversion or decrease of the femoroacetabular offset. In addition, FAI may result from acquired conditions as malunited femoral neck fractures, or retroverted acetabulum after pelvic osteotomies. These anomalies lead to pathological femoroacetabular contact, which in turn create impact and shear forces during hip movements. As a result, there is early labrum injury and acetabulum cartilage degeneration. The diagnosis is based on the typical clinical findings and images. Treatment is based on the correction of the anatomic anomalies, labrum debridement or repair, and degenerate articular cartilage removal. However, the natural evolution of the condition, as well as the outcome from long-term treatment, demand a better understanding, mainly in the asymptomatic individuals.

Instrumental Diagnosis and Preoperative Planning of Hip Arthroscopy in Femoroacetabular Impingement Syndrome: Lecture

“…Внутрисуставная мягкотканная патология при ФАИ чаще всего представлена комплексным повреждением, захватывающим суставную губу и хрящ вертлужной впадины, а также головку бедренной кости [61,62].…”

The Brazilian version of the Hip Sports Activity Scale: translation and cross-cultural adaptation

“…This abnormal contact between the acetabulum and the femoral neck during hip mobilization, especially during flexion and internal rotation, limits the range of motion. 1 , 4 Impact can occur in patients who subject their hip to extreme ranges of motion, which can cause compression of the non-spherical extension of the supraphysiological head. 5 …”

“…Pain can be constant, or intermittent at rest, and can interfere with sleep. 1 , 2 , 3 , 4 , 5 , 6 , 7 …”

Prevalência de sinais radiográficos de impacto femoroacetabular em indivíduos assintomáticos e não atletas

“…Femoroacetabular impingement (FAI) was described by Ganz et al (apud Volpon 1 ) as a result of an anatomical variation of the proximal femur (neck-head transition) and/or the acetabular rim that impinges the hip joint, mainly during extremes of movement, possibly causing labral and joint cartilage lesions. 1 2 3 4 …”

“…O impacto femoracetabular (IFA) foi descrito por Ganz et al apud Volpon1 como devido a uma variação anatômica do fêmur proximal (transição colo-cabeça) e/ou borda do acetábulo, que causa impacto na articulação do quadril, principalmente durante os extremos de movimento, o que pode levar a lesões labrais e da cartilagem articular. 1 2 3 4 …”