[Purpose] This study investigated the selective activation of the gluteus maximus during a prone hip extension with knee flexion exercise, with the hip joint in different positions. [Subjects] The subjects were 21 healthy, male volunteers. [Methods] Activities of the right gluteus maximus, right hamstrings, bilateral lumbar erector spinae, and bilateral lumbar multifidus were measured using sur...

Breakage of DHS guide wire during surgery and its migration into the pelvis through the hip joint is a rare complication and its removal can be very challenging for the surgeon. We share our experience of a similar case wherein we used an ‘iliofemoral’ approach to successfully remove the broken transfixing guidewire from the hip joint. Although iliofemoral approach is similar to the lateral win...

Abnormal or excessive force on the anterior hip joint may cause anterior hip pain, subtle hip instability and a tear of the acetabular labrum. We propose that both the pattern of muscle force and hip joint position can affect the magnitude of anterior joint force and thus possibly lead to excessive force and injury. The purpose of this study was to determine the effect of hip joint position and...

Anterior hip or groin pain is a common complaint for which people are referred for physical therapy. We have observed that people with anterior hip pain often walk in greater hip extension than people without anterior hip pain, and that the pain is reduced when they walk in less hip extension. Therefore, we investigated anterior hip joint forces which may contribute to anterior hip pain and exa...

Background. Low back pain is one of the ten most common causes of disability, and sacroiliac joint dysfunction is one of the most common causes of it. Objectives. This study aimed to find if there is any association between hip adductor tightness with sacroiliac joint dysfunction. Methods. Sixty people who had attended our Sports Medicine Clinic took part in this study (30 in each group). The...

INTRODUCTION The hip joint is a weight-bearing joint which allows a wide range of motion yet remains stable due to its ball and socket anatomy. Recognising this, the hip joint may encounter mechanical disorders or so-called ‘impingement syndromes’. Awareness of different patterns of hip joint impingement is crucial as these conditions may predispose to hip joint osteoarthritis1 and may be the s...

BACKGROUND: Hip Dysplasia is a frequent orthopedic disease that is characterized by early joint sublux- ation. The DARthroplasty technique is a two-part process that involves applying bone graft to increase the femoral head coverage with a low morbidity rate and the long term is known results. OBJECTIVES: This study was aimed to investigate the radiograph...

In order to increase the workspace and the carrying capacity of biomimetic robotics hip joint, a novel biomimetic robotics hip joint was developed. The biomimetic robotics hip joint is mainly composed of a moving platform, frame, and 3-RRR orthogonal spherical parallel mechanism branched chains, and has the characteristics of compact structure, large bearing capacity, high positioning accuracy,...

This paper presents a hip joint motion simulation method using accurate hip joint center and hip range of motion. We calculate the extreme hip joint range of motion centered on the hip joint center (HJC) that is located by an automatic calculation algorithm on 3D reconstructed surface models. We make 3D bone surface models from CT (Computer Tomography) or MRI (Magnetic Resonance Imaging). The m...