Hassaballa M A, Porteous A J, Newman J H
Avon Orthopaedic Centre, Southmead Hospital, BS10 5NB, Westbury-on-Trym, Bristol, UK.
Knee Surg Sports Traumatol Arthrosc. 2004 Mar;12(2):136-9. doi: 10.1007/s00167-003-0376-5. Epub 2003 Jul 26.
Kneeling is an important function of the knee, but little information is available on ability to kneel after different knee arthroplasty procedures. Previous work has asked patients about their kneeling ability; in this study it was objectively assessed. One hundred and twenty two patients - 38 having had total knee replacement (TKR), 53 unicompartmental knee replacement (UKR), 31 patello-femoral replacement (PFR) - were observed trying to kneel at 90 degrees on a chair, at 90 degrees on the floor, and at 120 degrees on the floor. Only 37% of patients thought they could kneel, whereas 81% were actually able to kneel ( p<0.001). Ability to kneel on the chair and on the floor at 90 degrees was significantly better than perceived ability for all prosthesis types ( p<0.001). Kneeling at 120 degrees showed no difference between perception and reality except for the PFR group ( p<0.05). In all positions, increased range of movement significantly improved kneeling ability ( p<0.001). Kneeling ability in men was significantly better than in women ( p<0.001). Patient-centred questionnaires do not accurately document kneeling ability after knee arthroplasty.
跪姿是膝关节的一项重要功能，但关于不同膝关节置换手术后的跪姿能力，现有信息较少。此前的研究曾询问患者他们的跪姿能力；而在本研究中，对其进行了客观评估。观察了122名患者——38例行全膝关节置换术（TKR）、53例行单髁膝关节置换术（UKR）、31例行髌股关节置换术（PFR）——尝试在椅子上呈90度跪姿、在地面上呈90度跪姿以及在地面上呈120度跪姿的情况。只有37%的患者认为自己能够跪，而实际上81%的患者能够跪（p<0.001）。对于所有假体类型，在椅子上和在地面上呈90度跪姿的实际能力显著优于自我感知能力（p<0.001）。除了髌股关节置换术（PFR）组外，在120度跪姿时，感知与实际情况没有差异（p<0.05）。在所有姿势下，活动范围增加均显著提高了跪姿能力（p<0.001）。男性的跪姿能力显著优于女性（p<0.001）。以患者为中心的问卷调查并不能准确记录膝关节置换术后的跪姿能力。
