Japanese female, 41 years old. On July 5th, 2022, she experienced a sensation of her right knee dislocating while exerting force on her right leg during a basketball game, rendering her immobile. Although she was able to walk later, she visited a hospital two days after the incident. No joint fluid was aspirated during the examination. An MRI scan was performed on July 12th, revealing the following diagnosis:
Complete right Anterior Cruciate Ligament (ACL) tear (proximal 1/3)
No meniscal damage.
According to the Ihara’s ACL tear classification of ACL injuries, it was classified as a type 2, which is the torn and disrupted type. After the injury, no giving way of the knee was reported. She did not undergo any physiotherapy involving knee extension post-injury. She had a history of a left Achilles tendon rupture surgery 13 years prior.
Starting July 28th, she initiated online therapy with Jun Matsumoto and continued Evo-Devo Exercises for five months. On December 12th, 2022, a second MRI scan was performed.
The evaluation of the MRI images indicated that the ruptured anterior cruciate ligament had restored continuity and healed naturally. According to Ihara’s ACL healing classification, it was classified as grade 3, which is thinned healed fiber.
Future Prospects and Considerations:
Having confirmed natural healing through MRI, she initiated full knee extension training and strength training. By the six-month mark post-injury, she had recovered to a level where she faced no issues in daily life. She is currently undergoing further rehabilitation with the aim of returning to recreational-level sports.
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- Ihara H, Kawano T. Influence of Age on Healing Capacity of Acute Tears of the Anterior Cruciate Ligament Based on Magnetic Resonance Imaging Assessment. J Comput Assist Tomogr. 2017 Mar/Apr;41(2):206-211. doi
- Pitsillides A, Stasinopoulos D, Giannakou K. Healing potential of the anterior cruciate ligament in terms of fiber continuity after a complete rupture: A systematic review. J Bodyw Mov Ther. 2021 Oct;28:246-254. doi
- Filbay, Stephanie R et al. “Healing of acute anterior cruciate ligament rupture on MRI and outcomes following non-surgical management with the Cross Bracing Protocol.” British journal of sports medicine, bjsports-2023-106931. 14 Jun. 2023, doi:10.1136/bjsports-2023-106931