Regeneration of the hamstring tendons after harvesting for arthroscopic anterior cruciate ligament reconstruction: a histological study in 11 patients

@article{Okahashi2006RegenerationOT,
  title={Regeneration of the hamstring tendons after harvesting for arthroscopic anterior cruciate ligament reconstruction: a histological study in 11 patients},
  author={Kohjirou Okahashi and Kazuya Sugimoto and Makoto Iwai and Manabu Oshima and Masayuki Samma and Yoshiyuki Fujisawa and Yoshinori Takakura},
  journal={Knee Surgery, Sports Traumatology, Arthroscopy},
  year={2006},
  volume={14},
  pages={542-545}
}
The purpose of our study is to evaluate whether the hamstring tendons can regrow after harvesting for anterior cruciate ligament (ACL) reconstruction and whether the regenerate tissue can be histologically characterized as tendinous. Eleven of the patients (eight female and three male; mean age, 23 years; range 17–37 years) consented to participate in this study. One year after the ACL reconstruction, surgical biopsy was done. Regeneration of the tendon was detected macroscopically in 9 of the… 
Histological Evaluation of Regenerated Semitendinosus Tendon a Minimum of 6 Years After Harvest for Anterior Cruciate Ligament Reconstruction
TLDR
The ST tendon regenerates and may regain a histological appearance similar to that of the nonharvested contralateral tendon, as seen in this study a median of 8.4 years after harvesting.
Hamstring Tendon Regeneration After Harvest for Anterior Cruciate Ligament Reconstruction: A Systematic Review.
ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION USING SEMITENDINOSUS AND GRACILIS AUTOGRAFTS
TLDR
There were no significant differences between injured and non-injured knees in terms of cartilage markers and inflammatory cytokines, but there were significantly more degenerative changes on radiographs and MRI in the reconstructed knees.
Tendon Regeneration After Harvest for ACL Reconstruction
TLDR
Postoperative functional deficits, such as muscle weakness, caused by the harvest of the graft cannot be fully discovered even years after surgery, and a caution should be exercised for use of the reharvested tendon graft in revision surgeries.
Structural and functional analysis of the semitendinosus tendon after harvest for soft tissue reconstructive procedures: a dynamic ultrasonographic study
TLDR
The presence of tissue in the harvest gap after ACL reconstruction is variable and when tissue is present, there is proximal retraction of the musculotendinous junction and disorganized appearance of the tissue that does not demonstrate normal excursion or physiological function similar to the native muscle-tendon unit.
Inducement of semitendinosus tendon regeneration to the pes anserinus after its harvest for anterior cruciate ligament reconstruction-A new inducer grafting technique
TLDR
The results suggest that the “inducer grafting” technique is able to improve the regeneration rate of the harvested ST tendon and promote hypertrophy of the regenerated ST tendon, extending all the way to the pes anserinus, however, this technique couldn’t improve the deficits in knee flexion torque after ACL reconstruction.
Regeneration of hamstring tendons after anterior cruciate ligament reconstruction
TLDR
Hamstring tendons regenerated after harvest of both semitendinosus and gracilis tendons for ACLR and there was no relation between isokinetic flexion strength and tendon regeneration.
Semitendinosus and Gracilis Tendon Regeneration Following Harvest
TLDR
This chapter will focus on the existing knowledge about the ST and G tendon regeneration frequency, quality of the regenerated tendon, level of insertion, cross-sectional area and weakness in flexion and internal rotation of the knee after harvest.
Tendon regeneration and muscle hypotrophy after isolated Gracilis tendon harvesting - a pilot study
TLDR
Isolated harvest of the gracilis tendon for shoulder procedures did not affect knee MRI significantly indicating therefore in general suitable graft utilization for surgeries outside of the knee.
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Results demonstrate that these tendons of the semiten dinosus and gracilis muscles after their use for anterior cruciate ligament reconstruction are probably functional and to regrow.
Semitendinosus tendon regeneration after harvesting for ACL reconstruction
TLDR
It is indicated that the semitendinosus tendon has a strong potential for regeneration and that the muscle atrophy seems to be less in the patients with a more normalis- ed distal insertion of the tendon in the pes anserinus.
Regeneration of the Semitendinosus Tendon after Its Use in Anterior Cruciate Ligament Reconstruction
TLDR
These findings help to understand the progression of the healing process at the harvest site and the nature of the regenerated semitendinosus tendon, which has previously been investigated only by studies of clinical and functional outcomes and by imaging studies.
The semitendinosus tendon regenerates after resection: A morphologic and MRI analysis in 6 patients after resection for anterior cruciate ligament reconstruction
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It is shown that full length and thickness harvesting of the semitendinosus tendon in most cases result in full-length tendon regeneration with tissue closely resembling the normal tendon.
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TLDR
It is concluded that with appropriate preoperative planning, a reharvested patellar tendon can be used for revision anterior cruciate ligament reconstruction to obtain reliable stability and strength postoperatively.
Semitendinosus tendon regeneration after harvesting for ACL reconstruction A prospective MRI study
TLDR
It is indicated that the semitendinosus tendon has a strong potential for regeneration and that the muscle atrophy seems to be less in the patients with a more normalised distal insertion of the tendon in the pes anserinus.
Regeneration of the Semitendinosus Tendon Harvested for Anterior Cruciate Ligament Reconstruction: Evaluation Using Ultrasonography *
TLDR
Patients who underwent anterior cruciate ligament reconstruction with doubled semitendinosus and gracilis tendon autografts were examined pre- and postoperatively by ultrasound to investigate the anatomy of the donor site before and after the harvest of the tendons.
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TLDR
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Twenty-four patients who underwent anterior cruciate ligament revision surgery were studied postoperatively and showed no significant differences in total KT-1000 arthrometer side-to-side measurements between the groups, but the Lysholm score was higher for patients with contralateral tendon grafts than for Patients with ipsilateral grafts.
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