PMID: 8961232Jan 1, 1996Paper

Knee joint muscle function after patellectomy: how important are the hamstrings?

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
M Kuster, G Blatter

Abstract

Twenty-three patients who had undergone unilateral patellectomy were tested using the Cybex II isokinetic dynamometer 9 years postoperatively. The results were compared with the performance of the uninvolved joint. There was a good correlation between loss of the quadriceps muscle function and loss of the hamstrings muscle function at 60 deg/s (R = 0.7, P < 0.001). Patients who showed a loss of quadriceps function of less than 40% also maintained good hamstrings function. A good or excellent functional result could be expected in these patients. If the loss of quadriceps function was more than 40%, a proportional loss of flexion torque was seen, indicating a functional impairment of the knee joint muscles not solely attributable to the loss of the lever arm. Furthermore, all patients with a loss of peak flexion torque of more than 30% showed an unsatisfactory clinical result. The evaluation of the hamstrings muscles by measuring the peak flexion moment at 60 deg/s can therefore be used as a preoperative assessment and as a guideline for rehabilitation after patellectomy.

References

Jul 1, 1987·Clinical Endocrinology·T MoriH Ogawa
Feb 1, 1987·European Journal of Clinical Microbiology·F G Araujo, J S Remington
Oct 1, 1985·Acta Orthopaedica Scandinavica·J JakobsenO S Rasmussen
May 1, 1992·Clinical Biomechanics·R Nisell, M Ericson

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Citations

Dec 25, 2009·Der Orthopäde·J B Erhardt, M S Kuster
Apr 30, 2008·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Lonnie E PaulosAnastassios Karistinos

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