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The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
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The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
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The thigh's motion is primarily governed by muscles originating in the pelvic girdle and inserted into the femur. One crucial muscle, the iliopsoas, is a combination of the psoas major and the iliacus muscles, sharing a common insertion point on the lesser trochanter of the femur.
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The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
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Updated: May 9, 2025

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats
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Patellar Tendon Imbrication.

Sercan Yalcin1, Ronak M Patel2, Jack Andrish1

  • 1Cleveland Clinic Foundation, Orthopaedic & Rheumatologic Institute, Cleveland, Ohio, USA.

Video Journal of Sports Medicine
|May 1, 2025
PubMed
Summary
This summary is machine-generated.

Patellar tendon imbrication safely corrects patella alta and lateral patellar instability. This surgical technique shortens the patellar tendon, offering a stable, effective solution for patients with this condition.

Keywords:
patella altapatellar dislocationpatellar instabilitypatellar tendon imbricationpatellar tendon shortening

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine

Background:

  • Patella alta is a frequent cause of patellar instability.
  • It affects both skeletally immature and adult patients.

Purpose of the Study:

  • To evaluate the safety and efficacy of patellar tendon imbrication for correcting patella alta.
  • To assess the long-term maintenance of correction.

Main Methods:

  • Patellar tendon imbrication involves exposing the tendon and using sutures to shorten it without osteotomy.
  • Specific "redundancy-reducing" and structural sutures are employed to create and maintain imbrication.
  • The technique was assessed for competence and need for quadriceps lengthening.

Main Results:

  • Radiographic shortening was maintained for a minimum of 2 years in 27 patients (32 knees).
  • No complications were directly related to the patellar tendon imbrication technique.
  • The procedure achieved an average of 1 cm of patellar tendon shortening.

Conclusions:

  • Patellar tendon imbrication is a safe and effective surgical option for patella alta with lateral patellar instability.
  • It provides durable correction and avoids the need for tibial tuberosity osteotomy, particularly in skeletally immature patients.