Medicine & Healthcare Sports medicine

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Regenerated meniscus stained with toluidine blue, using an Achilles tendon graft.
26 Aug 2022
The meniscus—a cartilage cushion in the knee—can be damaged by sports injuries or aging, but rarely heals on its own. A torn meniscus is often treated with resection, which is doomed to degeneration of the articular cartilage. For knees that have had the meniscus resected, meniscus reconstruction using autologous tendons has been performed in some countries, including Japan, but the results have not been consistent. A research group at the Department of Orthopedic Surgery, Graduate School of Medicine, Osaka Metropolitan University discovered an extra step that changes transplanted tendon tissue to make it similar to the original meniscus, providing better knee cartilage protection. They found that parathyroid hormone, a drug used to treat osteoporosis, acted on tendon-derived cells to promote chondrogenic differentiation, which recreated a meniscus-like tissue.
06 Aug 2022
Osaka Metropolitan University scientists revealed quadriceps tendon-patellar bone (QTB) grafts as a more suitable option than bone-patellar tendon-bone (BPTB) grafts for anterior cruciate ligament (ACL) reconstruction. Examinations in human cadavers and ACL reconstruction patients showed that the QTB graft is more similar to the ACL at the femoral insertion site than the BPTB graft. The difference between graft bending angle (GBA) and an angle corresponding to GBA showed that the QTB graft bends less than the BPTB graft, suggesting a lower risk of excessive stress on the insertion site and thereby a lower probability of ACL reconstruction failures. These findings contribute to potential improvement in ACL reconstruction for knee injury patients.
Hibernation study Japanese black bear
15 Jul 2022
Cultured human skeletal muscle cells infused with serum from hibernating bears exhibited “muscle gain” confirming that these creatures’ ability to avoid muscular damage despite months of inactivity is in their blood.
05 Jul 2021
Researchers analyze bone marrow-derived and peripheral blood-derived fibrin clots showing that the former contains more growth factors. They then show that bone marrow-derived fibrin clots can be used for meniscus suturing, even in the inner-most avascular regions, and with a 2-year post-operative follow-up, they show bone marrow-derived fibrin clots support healing better than their peripheral blood counterparts.
29 Mar 2021
Researchers from the University of Tsukuba find that vigorous exercise causes imperceptible improvements in sleep quality Tsukuba, Japan—Physical exercise has long been prescribed as a way to improve the quality of sleep. But now, researchers from Japan have found that even when exercise causes objectively measured changes in sleep quality, these changes may not be subjectively perceptible. In a study published this month in Scientific Reports, researchers from the University of Tsukuba have revealed that vigorous exercise was able to modulate various sleep parameters associated with improved sleep, without affecting subjective reports regarding sleep quality.
30 Oct 2020
Regular training enhances your strength, but recovery is equally important. Elastic bandages and compression garments are widely used in sports to facilitate recovery and prevent injuries. Now, a research team from Tohoku University has determined that compression garments also reduce strength loss after strenuous exercise.
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22 May 2017
Researchers at The Hong Kong Polytechnic University (PolyU) have developed a mobile biofeedback device for footstrike pattern modification for injury prevention and rehabilitation in runners.

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