Proximal patellar tendon abnormalities on ultrasound can develop in male adolescent basketball players: A longitudinal study.

Introduction: Adolescent patellar tendinopathy is reported but the pubertal-stage of onset of abnormal tendon structure has not been investigated with grayscale ultrasound.

Aims: To investigate abnormal tendon structure using grayscale ultrasound and its association with pubertal-stage and pain.

Methods: Forty-three male basketball players aged 13.

Athletes with a clinical rating of good and poor lumbopelvic stability have different kinematic variables during single leg squat and dip test.

Objectives: To examine the kinematics of athletes with good and poor lumbopelvic stability (LPS) based on clinical rating criteria of single leg squat (SLS) and dip test (DT) The aim was to establish if good and poor LPS categorization is supported by differences in kinematic variables.

Methods: Sixty-two recreational athletes had their LPS categorized using clinical rating criteria for SLS and DT as good, poor or neither good nor poor. Kinematic measures were examined in those with good (N = 8) or poor (N = 14) LPS and results compared to the rating criteria.

Comparison of lower limb and trunk kinematics between markerless and marker-based motion capture systems.

Unlabelled: Three dimensional (3-D) motion capture systems are used by researchers and clinicians to analyze the kinematics of human movement. Traditional marker based systems are time consuming and limit the size of studies. Markerless 3-D systems are quicker to use but the differences between data captured in each system is unclear.

Development of clinical rating criteria for tests of lumbopelvic stability.

Background. Lumbopelvic stability (LPS) is regarded as important for injury prevention, yet there are few reliable or valid tests that can be used in the clinical assessment of LPS. Three dynamic functional tests were identified that assess LPS in multiple planes of motion: dip test (DT), single leg squat (SLS), and runner pose test (RPT).

Knee biomechanics early after knee replacement surgery predict abnormal gait patterns 12 months postoperatively.

An abnormal flexor moment pattern is often evident following total knee replacement (TKR) surgery. We investigated whether such a pattern at 12 months post-surgery could be predicted using biomechanical gait measures assessed before surgery and at 4 months post-surgery. Thirty two TKR patients were evaluated and classified as normal (biphasic pattern) or abnormal (flexor moment pattern) at each time point.

An evaluation of the anatomic basis of the O'Brien active compression test for superior labral anterior and posterior (SLAP) lesions.

It has been suggested that the positive position of the O'Brien test (shoulder flexion, horizontal adduction, and internal rotation) tensions the bicipital labral complex relative to the negative position (shoulder flexion, horizontal adduction, and external rotation). This study measured active and passive tension in the long head of biceps in the 2 positions of the O'Brien test to validate the proposed anatomic basis of the test. Active tension was measured using surface electromyography of the long head of biceps in 12 healthy young adults.