PURPOSE We evaluated the geometric discrepancies between the proximal femur in Koreans and two types of proximal femoral nail using plain radiographs. MATERIALS AND METHODS A total of 100 consecutive patients (38 treated with proximal femoral nail antirotation [PFNA], 62 PFNA II) with intertrochanteric fracture were retrospectively identified. The minimum follow up period was 32 months. The g...

OBJECTIVE To validate the use of contrast-enhanced (CE) fat-suppressed three-dimensional (3D) fast gradient-recalled acquisition in the steady state with radiofrequency spoiling (FSPGR) magnetic resonance imaging (MRI) for the diagnosis of anterolateral soft tissue impingement of the ankle, as compared to the use of routine ankle MRI. MATERIALS AND METHODS Contrast-enhanced fat-suppressed 3D-...

EDUCATIONAL OBJECTIVES As a result of reading this article, physicians should be able to: 1. Identify the etiology of femoroacetabular impingement. 2. Assess femoroacetabular impingement on physical examination. 3. Recognize femoroacetabular impingement on imaging studies. 4. Discuss modern techniques to effectively treat femoroacetabular impingement, both open and arthroscopic. Femoroacetabula...

OBJECTIVE To describe the outcome of cases with subacromial impingement syndrome managed with arthroscopic subacromial decompression. STUDY DESIGN Quasi-experimental study. PLACE AND DURATION OF STUDY Section of Orthopaedics, Department of Surgery, The Aga Khan University Hospital, Karachi from April 2005 to March 2006. METHODOLOGY Thirty patients with impingement syndrome who underwent a...

OBJECTIVES Bony impingement of the proximal femur on the pelvis is an important factor for dislocation after total hip arthroplasty (THA). We evaluated bony impingement after THA using the rotation matrix derived from postoperative computed tomography (CT) images. PATIENTS AND METHODS One hundred and seven hip joints were subjected to primary THA via a posterolateral approach. We used the rot...

Soft tissue impingement of the shoulder occurs in two critical areas; the subacromial space and coracohumeral space, areas often associated with shoulder dysfunction, pain and injury. Impingement has been described in several different anatomic locations and can be affected by gleno-humeral positioning. Sub-acromial and sub-coracoid impingement have been described as possible sources of pain an...

We examined the morphology of mammalian hips asking whether evolution can explain the morphology of impingement in human hips. We describe two stereotypical mammalian hips, coxa recta and coxa rotunda. Coxa recta is characterised by a straight or aspherical section on the femoral head or head-neck junction. It is a sturdy hip seen mostly in runners and jumpers. Coxa rotunda has a round femoral ...

Femoroacetabular impingement is a well-documented cause of hip pain. There is, however, increasing evidence for the presence of a previously unrecognised impingement-type condition around the hip - ischiofemoral impingement. This is caused by abnormal contact between the lesser trochanter of the femur and the ischium, and presents as atypical groin and/or posterior buttock pain. The symptoms ar...

BACKGROUND In situ pinning, a low-risk treatment for slipped capital femoral epiphysis (SCFE), leaves the slipped femoral head in place and may reduce range of motion (ROM) and cause impingement. It is unclear when a more complex surgery should be considered, because the relationships between severity, slip stability, remodeling, impingement, and ROM are unknown. RESEARCH QUESTIONS (1) Do mor...

Fifty-six anterior cruciate ligament (ACL) reconstructions had a magnetic resonance scan of the ACL graft six months after operation. The impingement-free grafts (n = 26) had a low magnetic resonance signal from origin to insertion. Impinged grafts (n = 30) had an increased magnetic resonance signal confined to the distal two thirds of the graft. The location of the tibial tunnel (TT) was deter...