Anterior cruciate ligament reconstruction using quadriceps tendon autograft is a viable option for small-statured female patients.

Purpose: The choice of graft for anterior cruciate ligament (ACL) reconstruction remains controversial. The quadriceps tendon (QT) autograft is a good alternative for ACL reconstruction. However, concerns regarding its use in short-statured patients, related to donor site morbidity, anterior knee pain, or loss of muscle strength remain.

In vivo static and dynamic lengthening measurements of the posterior cruciate ligament at high knee flexion angles.

Purpose: Rehabilitation is an important aspect of both non-operative and operative treatments of knee ligament tear. Posterior cruciate ligament (PCL) non-operative treatment consists of a step-by-step rehabilitation protocol and is well described. It goes from rest (phase I) to strengthening exercises (phase IV).

Multi-body optimization with subject-specific knee models: performance at high knee flexion angles.

When estimating knee kinematics from skin markers and stereophotogrammetry, multi-body optimization (MBO) has provided promising results for reducing soft tissue artefacts (STA), but can still be improved. The goal of this study was to assess the performance of MBO with subject-specific knee models at high knee flexion angles (up to 110°) against knee joint kinematics measured by magnetic resonance imaging. Eight subjects were recruited.

[Current treatment strategy of meniscal lesions in athletes].

The primary goal of meniscal treatment in elite athletes is to guarantee knee function for sports performance and to prevent osteoarthritic changes. The meniscus acts not only as cushion in the femorotibial joint but also as a major secondary stabilizer with its posterior medial and lateral horns. Therefore, the integrity of the meniscal tissue is crucial for knee function and needs to be preserved, especially when the meniscal lesion is found in the periphery (vascularized zone).

[Unicompartmental knee replacement].

Unicompartmental knee arthroplasties (UKA) have been created to treat primary unicompartmental knee arthritis. They are indicated in case of lower-limb deformity due to unicompartmental arthritis, but not to treat unicompartmental arthritis due to extra-articular deformity. Early failures are do to ligamentar problems or to surgical technical errors.

Correlation of clinical and magnetic resonance imaging findings in hips of elite female ballet dancers.

Purpose: To understand why professional female ballet dancers often complain of inguinal pain and experience early hip osteoarthritis (OA). Goals were to examine clinical and advanced imaging findings in the hips of dancers compared with those in a matched cohort of nondancers and to assess the femoral head translation in the forward split position using magnetic resonance imaging (MRI).

Methods: Twenty professional female ballet dancers and 14 active healthy female individuals matched for age (control group) completed a questionnaire on hip pain and underwent hip examination with impingement tests and measurement of passive hip range of motion (ROM).

Extreme hip motion in professional ballet dancers: dynamic and morphological evaluation based on magnetic resonance imaging.

Objective: To determine the prevalence of femoroacetabular impingement (FAI) of the cam or pincer type based on magnetic resonance imaging (MRI) in a group of adult female professional ballet dancers, and to quantify, in vivo, the range of motion (ROM) and congruence of the hip joint in the splits position.

Materials And Methods: Institutional review board approval and informed consent from each volunteer were obtained. Thirty symptomatic or asymptomatic adult female professional ballet dancers (59 hips) and 14 asymptomatic non-dancer adult women (28 hips, control group) were included in the present study.

ACL reconstruction and extra-articular tenodesis.

The purpose of this article is to update the orthopedic community on the role of lateral extra-articular tenodesis in the management of anterior cruciate ligament-deficient knees. Information includes historical perspective, current applications and techniques, and a review of published outcomes.

Noninsertional Achilles tendinopathy treated with gastrocnemius lengthening.

Background: Surgery is frequently considered an option for refractory, symptomatic noninsertional Achilles tendinopathy. Gastrocnemius equinus can result in mechanical overload of the Achilles tendon and may be a factor in its etiology. Our hypothesis was that reducing load transmission to the Achilles tendon by gastrocnemius lengthening (Strayer procedure) may be an effective treatment.

Assessment of congruence and impingement of the hip joint in professional ballet dancers: a motion capture study.

Background: Early hip osteoarthritis in dancers could be explained by femoroacetabular impingements. However, there is a lack of validated noninvasive methods and dynamic studies to ascertain impingement during motion. Moreover, it is unknown whether the femoral head and acetabulum are congruent in typical dancing positions.

[Anterior cruciate ligament reconstruction: indications and techniques].

The anterior cruciate ligament (ACL) is a key structure for the knee joint stability and is frequently injured. Patients can be classified as "low-risk" or "high-risk" to have subsequent knee instability or meniscal injuries. This risk is based on the pre-injury level of sports participation and on the initial knee stability.