MR Imaging of Intra- and Periarticular Cyst-Like Lesions of the Knee Joint in Workers with Occupational Kneeling

Table 1

Characteristics of the study sample, floor layers (𝑛=92), and graphic designers (𝑛=49).

	Floor layers		Graphic designers		𝑃-value
Age, yrs (mean, SD)	54.5	7.2	57.7	5.6	𝑃<0.05
Trade seniority*, yrs (mean, SD)	29.6	9.8	35.9	6.5	𝑃<0.05
BMI^†, kg/m^2	26.2	3.4	26.6	4.8	𝑃=0.53
Knee complaints^‡, n (%)	46	50.0	24	48.9	𝑃=0.91
Knee injuries^§, n (%)	5	5.4	10	20.4	𝑃<0.05
Knee-straining sports^¶, (%)	46	50.0	36	73.5	𝑃<0.05

*Duration of employment in the trade.
^†Body mass index.
^‡Ache, pain, or nuisance during the past 12 mo.
^§Fractures of the knee joint, meniscal injuries, cruciate ligament ruptures.
^¶Football, handball, badminton, tennis, volleyball, ice hockey, and weight lifting.