Related Experiment Video
Updated: Jan 26, 2026
07:24
Autologous Microfractured and Purified Adipose Tissue for Arthroscopic Management of Osteochondral Lesions of the Talus
Published on: January 23, 2018
10.8K
Editorial Commentary: Second-Generation Microfracture-We Are Only As Strong As Our Weakest Link
Bert R Mandelbaum1, Jonathan A Stone1
1Santa Monica, California.
Summary
Articular cartilage knee injuries are common, especially in athletes. Second-generation microfracture (MFx) techniques aim to improve cartilage repair by combining cells, scaffolds, and growth factors for better outcomes.
Area of Science:
- Orthopedic surgery
- Regenerative medicine
- Sports medicine
Background:
- Focal chondral lesions in the knee are a significant clinical challenge, particularly for athletes.
- The microfracture (MFx) procedure is a primary arthroscopic treatment for small chondral defects, serving as a benchmark for other repair methods.
Discussion:
- First-generation MFx has demonstrated limitations and weaknesses over time.
- Optimizing cartilage regeneration requires addressing the "weakest link" in the repair process.
Key Insights:
- Second-generation MFx aims to enhance regeneration through a combination of cells, scaffolds, and growth factors.
- This integrated approach targets the core components necessary for effective articular cartilage repair.
Outlook:
- Future research will focus on refining the synergistic application of cells, scaffolds, and growth factors in MFx.
- Advancements in MFx hold promise for improving patient outcomes in knee cartilage repair.
Related Concept Videos
02:28Titration Calculations: Strong Acid - Strong Base
33.8K
Calculating pH for Titration Solutions: Strong Acid/Strong Base
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
A titration is carried out for 25.00 mL of 0.100 M HCl (strong acid) with 0.100 M of a strong base NaOH. The pH at different volumes of added base solution can be calculated as follows:
(a) Titrant volume = 0 mL. The solution pH is due to the acid ionization of HCl. Because this is a strong acid, the ionization is complete and the hydronium ion molarity is 0.100 M. The pH of the solution is then:
33.8K
03:22Strong Acid and Base Solutions
35.4K
A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial concentration of acid. For example, 0.20 M hydrobromic acid will dissociate completely in water and produces 0.20 M of hydronium ions and 0.20 M of bromide ions.
35.4K
01:23Titration of a Strong Acid with a Strong Base
10.3K
During the titration of a strong acid with a strong base, pH calculations are primarily based on the concentration of residual hydronium or hydroxide ions. Initially, a strong acid like hydrochloric acid fully dissociates, creating hydronium and chloride ions, resulting in a low pH. The addition of a strong base like sodium hydroxide alters the concentration of hydronium ions by neutralizing them. As more base is added, the pH gradually increases. At the equivalence point, all hydronium ions...
10.3K
02:04Covalently Linked Protein Regulators
8.9K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
8.9K
03:55Titration Calculations: Weak Acid - Strong Base
49.1K
Calculating pH for Titration Solutions: Weak Acid/Strong Base
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
49.1K
01:30Titration of a Weak Acid with a Strong Base
4.4K
In titrating a weak acid with a strong base, different calculation methods are applied at various stages. Initially, the pH of a weak acid like acetic acid is calculated using its dissociation constant (Ka) and an ICE table. Upon addition of a strong base such as sodium hydroxide, a buffer forms, and its pH is determined using the Henderson-Hasselbalch equation. As more base is added and the titration reaches the halfway point, the pH becomes equal to the pKa of the acid, indicating equal...
4.4K