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PubMed · 8961232

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

M Kuster·G Blatter
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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.

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Activities of Daily LivingAdultFemaleFollow-Up StudiesHumansKnee JointMaleMiddle AgedMuscle, SkeletalPatellaRange of Motion, ArticularSurveys and QuestionnairesThighTorqueTreatment FailureJournal Article

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BibTeXRIS

M Kuster, G Blatter. 1996. Knee joint muscle function after patellectomy: how important are the hamstrings?. https://doi.org/10.1007/bf01577410

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