Evaluation of the size and position of the insertion of the anterior medial meniscus root in varus osteoarthritic knees

Akira Sasaki, Takehiko Sugita, Toshimi Aizawa, Naohisa Miyatake, Masayuki Kamimura, Hirokazu Fujisawa, Atsushi Takahashi

Research output: Contribution to journalArticle

Abstract

Purpose: Recent studies have suggested radial displacement of the medial meniscus as a cause of varus knee osteoarthritis (OA). Two anatomical studies reported that such displacement may be associated with anterior insertion of the medial meniscus anterior horn. It was aimed to evaluate the location and area of this insertion in patients with advanced knee OA. Methods: Medial meniscus anterior horn insertions were classified into four types, as described in a previously reported classification during 225 total knee arthroplasty (TKA) in 184 patients. The incidence rates of insertion type were compared with previously reported rates in nearly normal or non-arthritic knees. The insertion surface area was also measured during 158 TKAs. Results: Of the 225 knees, 82 (36.4 %), 93 (41.3 %), 35 (15.6 %), and 15 (6.7 %) were classified as I, II, III, and IV, respectively. An anteriorly inserted anterior horn was not more frequent in advanced varus OA knees than in previously reported nearly normal or non-arthritic knees. The insertion surface areas were 57.5 ± 18.9, 56.1 ± 16.0, and 56.4 ± 14.4 mm2 for types I, II, and III, respectively; these areas did not differ significantly. Conclusion: Since the incidence of an anteriorly inserted medial meniscus anterior horn was not higher in advanced varus OA knees than in normal or non-arthritic knees, an anteriorly inserted anterior horn may have little or no effect on the aetiology of varus OA knees. This study provides some information for clarifying the aetiology of knee OA. Level of evidence: IV.

Original languageEnglish
Pages (from-to)362-367
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume25
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Keywords

  • Anterior horn
  • Insertion surface area
  • Medial meniscus
  • Radial displacement
  • Varus knee osteoarthritis

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Evaluation of the size and position of the insertion of the anterior medial meniscus root in varus osteoarthritic knees'. Together they form a unique fingerprint.

  • Cite this