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Related Concept Videos

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Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
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Bone Remodeling01:40

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Compact Bone01:27

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Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
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Related Experiment Video

Updated: Feb 5, 2026

Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
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Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone

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Changes in patellar height due to bone-tendon-bone graft.

R Seijas1, A Sallent2, A Pons2

  • 1Fundación García-Cugat, Hospital Quirón, UIC, Barcelona.

Revista Espanola De Cirugia Ortopedica Y Traumatologia (English Ed.)
|September 4, 2018
PubMed
Summary

Closing the paratenon during anterior cruciate ligament (ACL) reconstruction using a bone-tendon-bone graft did not affect patellar height. This surgical technique did not alter patellar height in patients two years post-surgery.

Keywords:
Altura patelarBTB reconstructionComplicaciones del ligamento cruzado anteriorComplications anterior cruciate ligamentInsall-Salvatti indexPatela bajaPatella bajaPatellar heightReconstrucción HTHÍndice de Insall-Salvatti

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Area of Science:

  • Orthopedic surgery
  • Sports medicine
  • Radiology

Background:

  • Complications after anterior cruciate ligament (ACL) reconstruction are frequent.
  • Patellar height changes, particularly patella baja, can lead to anterior knee pain.
  • Previous research suggests a link between ACL reconstruction with bone-tendon-bone grafts and patella baja.

Purpose of the Study:

  • To evaluate the effect of closing the paratenon of the patellar tendon during ACL reconstruction on patellar height.
  • To determine if this surgical modification influences the development of patella baja.

Main Methods:

  • A cohort of 43 patients undergoing ACL reconstruction with bone-tendon-bone graft and paratenon closure was studied.
  • Radiological assessments, including the Insall-Salvati index, axial view, and patellar tilt, were performed pre-operatively and at a 2-year follow-up.
  • The contralateral healthy knee served as the control.

Main Results:

  • No statistically significant changes in patellar height were detected between pre-operative measurements and the 2-year follow-up.
  • The Insall-Salvati index, axial view, and patellar tilt remained consistent throughout the study period.

Conclusions:

  • Closing the paratenon of the patellar tendon during ACL reconstruction does not appear to alter patellar height within a two-year radiological follow-up.
  • This surgical technique may not be a contributing factor to changes in patellar height post-ACL reconstruction.