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The Leeds-Keio© Ligament System 90 (Neoligaments)

Health Sciences · Robert W. Jackson Arthroscopy

A grey plastic tray with a brown-tinted clear cover features moulded recesses that contain 19 individual metal components as well as two blue rubber screw-like pieces. The tray consists of two parts, an outer liner and an inner insert that holds the instruments. Three additional metal pieces are located on a blue rubber-like pad beneath the inner tray. 15 of the metal pieces appear to be similar or identical to those in 2022.JAC.256.

Accession Number: 2022.JAC.257

Alternative Name:

Primary Materials: Stainless Steel, Plastic


White printing on the lid of the clear case reads: “Neoligaments ltd. // The Leeds-Keio©// Ligament System 90”

Dimensions (cm):

Height = 8.5, Width = 44, Length= 35.5.


The Leeds-Keio artificial ligament was introduced in the early 1980s as a mechanically stable graft that encouraged ingrowth of tissue. It consisted of a polyester mesh that was attached to the femur and tibia with bone plugs.

This apparatus is presumably a set of guides, clamps, and similar tools meant to facilitate the implantation of the Leeds-Keio artificial ligament.


The plastic case has very light signs of wear across its surface. The metal instruments appear to be in very good condition. It is not clear whether the set is complete.

Associated Instruments:

Manufacturer: Neoligaments Ltd. Leeds, UK.

Date of Manufacture: post 1982.


The Robert W. Jackson Arthroscopy Collection was acquired by the University of Toronto from Dr. Jackson’s family on November 12th, 2020.

Additional Information and References:

Kyosuke Fujikawa, Fujio Iseki, Bahaa B. Seedhom (1989). “Arthroscopy after anterior cruciate reconstruction with the Leeds-Keio ligament.” Journal of Bone and Joint Surgery. British Volume, 71(4), 566–570.

Jan Rading and Lars Peterson (1995) “Clinical experience with the Leeds-Keio artificial ligament in anterior cruciate ligament reconstruction. A prospective two-year follow-up study.” The American Journal of Sports Medicine, 1995. 23(3), 16-9.

Randy Mascarenhas and Peter B. MacDonald (2008) “Anterior Cruciate Ligament Reconstruction: A Look at Prosthetics – Past, Present and Possible Future.” McGill Journal of Medicine 11, 1: 29–37.

Historical Notes:

Neoligaments Ltd. was founded in 1982 in Leeds, UK.

  • Donated to UTSIC