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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

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The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
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Bones of the Upper Limb: Radius01:09

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The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
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Bones of the Lower Limb: Tibia and Fibula01:10

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The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...
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Bones of the Upper Limb: Humerus01:19

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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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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 external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
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Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
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Bone tumor resection guide using three-dimensional printing for limb salvage surgery.

Jong Woong Park1, Hyun Guy Kang1,2, Kwun Mook Lim3

  • 1Orthopaedic Oncology Clinic, National Cancer Center, Goyang, Korea.

Journal of Surgical Oncology
|September 28, 2018
PubMed
Summary

Three-dimensional (3D)-printed guides enhance bone tumor surgery by enabling precise resection and reconstruction. This study confirms their accuracy and versatility in limb salvage procedures, with a maximal cutting error of 3mm.

Keywords:
bone tumorlimb salvage surgerypersonalizedsurgical guidethree-dimensional printing

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Area of Science:

  • Orthopedic Oncology
  • Biomedical Engineering
  • Surgical Technology

Background:

  • Three-dimensional (3D)-printed guides offer personalized solutions for bone tumor surgery.
  • These guides are noninvasive, accurate, and user-friendly, aiding in complex orthopedic procedures.

Purpose of the Study:

  • To categorize the applications of 3D-printed bone tumor resection guides.
  • To establish in vivo accuracy data for these guides in orthopedic oncology.

Main Methods:

  • Retrospective review of 12 patients undergoing limb salvage surgery with 3D-printed guides.
  • Comparison of actual and planned bone margins to assess surgical accuracy.
  • Measurement of cutting error from virtual cutting planes and graphical data.

Main Results:

  • Applications included wide excision, reconstruction with bone allografts, and reconstruction with 3D-printed implants.
  • The maximal cutting error achieved was 3mm, demonstrating high precision.
  • The guides facilitated accurate bone tumor resection and subsequent reconstruction.

Conclusions:

  • 3D-printed resection guides are effective and easy to use in orthopedic oncology.
  • They show significant promise for bone tumor resection and complex reconstructions.
  • The guides support reconstruction with both allografts and custom implants.