Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 19, Issue 10, pp 1716–1721

Landing adaptations following isolated lateral meniscectomy in athletes

Authors

    • Cincinnati Children’s Hospital Medical Center Sports Medicine Biodynamics Center and Human Performance Laboratory
    • Department of Pediatrics, College of MedicineUniversity of Cincinnati
  • Stephen J. Minning
    • Cincinnati Children’s Hospital Medical Center Sports Medicine Biodynamics Center and Human Performance Laboratory
    • A Division of Select Medical CorporationNovaCare Rehabilitation/University of Cincinnati Sports Medicine
  • Gregory D. Myer
    • Cincinnati Children’s Hospital Medical Center Sports Medicine Biodynamics Center and Human Performance Laboratory
    • Department of Pediatrics, College of MedicineUniversity of Cincinnati
    • Departments of Physiology and Cell Biology, Orthopaedic Surgery, Family Medicine and Biomedical EngineeringOhio State University Sports Medicine
  • Robert E. Mangine
    • A Division of Select Medical CorporationNovaCare Rehabilitation/University of Cincinnati Sports Medicine
  • Angelo J. Colosimo
    • Department of Orthopaedic SurgeryUniversity of Cincinnati
  • Timothy E. Hewett
    • Cincinnati Children’s Hospital Medical Center Sports Medicine Biodynamics Center and Human Performance Laboratory
    • Department of Pediatrics, College of MedicineUniversity of Cincinnati
    • Department of Orthopaedic SurgeryUniversity of Cincinnati
    • Departments of Biomedical Engineering and Rehabilitation SciencesUniversity of Cincinnati
    • Departments of Physiology and Cell Biology, Orthopaedic Surgery, Family Medicine and Biomedical EngineeringOhio State University Sports Medicine
Knee

DOI: 10.1007/s00167-011-1490-4

Cite this article as:
Ford, K.R., Minning, S.J., Myer, G.D. et al. Knee Surg Sports Traumatol Arthrosc (2011) 19: 1716. doi:10.1007/s00167-011-1490-4

Abstract

Purpose

Objective functional outcomes following isolated radial lateral meniscus tears in the athlete between the ages of 14–25 are not clearly defined. The objective of this study was to determine whether patients following lateral meniscectomy demonstrate lower extremity asymmetries relative to control athletes 3 months after surgery. We hypothesized that following lateral meniscectomy, athletes aged 14–25 years old would demonstrate altered landing biomechanics compared to sex, age, height, weight, and sport-matched controls.

Methods

A total of 18 subjects were included in this study. Nine patients (7 men and 2 women, 20.1 ± 2.8 years) who had undergone first-time isolated radial lateral meniscus tears were tested 3 months following partial lateral meniscectomies and compared to nine sex, age, height, weight, and sport-matched controls (7 men and 2 women, 19.7 ± 3.1 years). A ten-camera motion analysis system and two force platforms were used to collect three trials of bilateral drop landings. A 2X2 ANOVA was used to test the interaction between side (involved vs. uninvolved) and group (patient vs. control).

Results

The patient group landed with a decreased internal knee extensor moment compared to the uninvolved side and controls (interaction P < 0.05). The involved limb quadriceps isokinetic torque was not decreased compared to the contralateral or control (n.s.). Decreased knee extensor moments were significantly associated with reduced measures of function (IKDC scores: r = 0.69; P < 0.05).

Conclusions

Athletes who return to sport at approximately 3 months following a partial lateral meniscectomy may employ compensation strategies during landing as evidenced by reduced quadriceps recruitment and functional outcome scores. Clinicians should focus on improving quadriceps function during landing on the involved leg in an attempt to decrease residual limb asymmetries.

Level of evidence

Case–control study, Level III.

Keywords

Landing biomechanicsKnee surgeryKnee functionCase–control study

Copyright information

© Springer-Verlag 2011