Related Experiment Video
Updated: Aug 11, 2026

06:17
Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head
Published on: April 12, 2022
Osteonecrosis of the mandibular condyle. Pathophysiology and core decompression
R Chuong1, M A Piper, T J Boland
1Maxillofacial Surgery Institute of Florida, St. Petersburg, USA.
Summary
Osteonecrosis may cause condylar degeneration and pain, previously attributed to osteoarthritis. Preliminary core decompression procedures show therapeutic benefits, warranting further investigation into this bone disease.
Area of Science:
- Orthopedics
- Oral and Maxillofacial Surgery
- Pathology
Background:
- Condylar form deviations are often misdiagnosed as degenerative arthritis or osteoarthritis.
- Osteonecrosis is increasingly recognized as a potential cause of condylar degeneration and associated pain.
- The spectrum of degenerative osseous disease includes osteoarthrosis, condylsis, osteomyelitis, and osteonecrosis.
Purpose of the Study:
- To review the literature on osteonecrosis and its role in degenerative osseous conditions.
- To present preliminary findings on mandibular core decompression as a treatment for condylar degeneration.
- To highlight the need for further research into osteonecrosis of the condyle.
Main Methods:
- Comprehensive literature review focusing on osteonecrosis and related degenerative bone diseases.
- Presentation of preliminary results from mandibular core decompression procedures.
- Surgical intervention involving core decompression with and without bone grafting.
Main Results:
- Osteonecrosis is a significant factor in condylar degeneration, distinct from or contributing to osteoarthritis.
- Preliminary data suggest that mandibular core decompression may offer therapeutic benefits.
- The procedure's efficacy requires further validation through extensive research.
Conclusions:
- Osteonecrosis should be considered in the differential diagnosis of condylar degeneration and pain.
- Mandibular core decompression presents a promising therapeutic avenue for managing condylar osteonecrosis.
- Further research is essential to fully understand and treat this condition.
Related Concept Videos
Osteoclasts in Bone Remodeling
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Bone Disorders
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone Remodeling and Repair
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Cushing Syndrome II: Pathophysiology
Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
Degenerative Disc Disease I: Introduction
Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...
Degenerative Disc Disease ll: Pathophysiology
The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...

