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Intraoperative changes in medial joint gap after posterior femoral condylar resection,posterior osteophyte removal,and femoral component placement during primary total knee arthroplasty |
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| Institution: | 1. Institute of Applied Health Sciences, University of Aberdeen, NHS Grampian, AB24 3FX, United Kingdom;2. University of Groningen, University Medical Centre Groningen, Groningen 9713 GZ, the Netherlands;3. Trauma and Orthopaedics, Dr Gray''s Hospital, Elgin, NHS Grampian, IV30 1SN, United Kingdom;1. Servicio de Traumatología y Ortopedia, Hospital Civil de Guadalajara ‘Fray Antonio Alcalde’, Guadalajara, Jalisco, Mexico;2. Unidad de VIH, Hospital Civil de Guadalajara ‘Fray Antonio Alcalde’, Guadalajara, Jalisco, Mexico;3. Universidad de Guadalajara, Instituto de Investigación en Inmunodeficiencias y VIH (InIVIH), Centro Universitario de Ciencias de la Salud, Guadalajara, Jalisco, Mexico;4. Servicio de Radiología e Imagen, Hospital Civil de Guadalajara ‘Fray Antonio Alcalde’, Guadalajara, Jalisco, Mexico;1. Department of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands;2. Department of Radiology, Martini Hospital, Groningen, The Netherlands;1. Mersin University Medical School, Department of Physical and Rehabilitation Medicine, Mersin, Turkey;2. Hacettepe University Medical School, Department of Physical and Rehabilitation Medicine, Ankara, Turkey;1. Department of Orthopedic Surgery, NYU Grossman School of Medicine, 301 E 17th St, Suite 1500, New York, NY 10003, USA;2. Department of Orthopedic Surgery, NYU Grossman School of Medicine, 530 First Avenue, HCC Building, Suite 5J, New York, NY 10016, USA;1. Department of Orthopedics and Sports Medicine, The First Affiliated Hospital of Soochow University, Suzhou, PR China;2. Suzhou Medical College of Soochow University, Suzhou, PR China;3. Department of Orthopedics, Wujiang Fourth People’s Hospital, Wujiang, Suzhou, PR China |
| Abstract: | Background“Mid-flexion stability” is important for superior patient satisfaction following total knee arthroplasty (TKA). Thus, it is important to control medial joint gap intraoperatively as a countermeasure. However, reports on the precise intraoperative changes in medial joint gap during TKA are scarce. This study evaluated the intraoperative changes in medial joint gap during TKA.MethodsWe studied 167 knees with varus osteoarthritis that underwent 80 cruciate-retaining (CR) and 87 posterior-stabilized (PS) TKAs between January 2018 and December 2020. We measured the intraoperative changes in medial joint gap with a tensor device at 137.5 N.ResultsThe medial joint gap after posterior femoral condylar resection was significantly increased not only at 90° of flexion but also at 0° of extension in CR and PS TKAs (p < 0.01). The medial joint gap after posterior osteophyte removal was significantly increased not only at 0° of extension but also at 90° of flexion in CR and PS TKAs (p < 0.01). The medial joint gap at 0° of extension was reduced by 0.60 mm after femoral component placement in PS TKA.ConclusionSurgeons need to pay close attention to these intraoperative changes in medial joint gap by measuring the medial joint gap before and after each procedure or assuming the changes in those values before bone cutting to achieve superior patient satisfaction following TKA. |
| Keywords: | Total knee arthroplasty Medial joint gap Pre-cut technique Posterior clearance Component gap Posterior condylar offset CR"} {"#name":"keyword" "$":{"id":"k0040"} "$$":[{"#name":"text" "_":"cruciate-retaining PCL"} {"#name":"keyword" "$":{"id":"k0050"} "$$":[{"#name":"text" "_":"posterior cruciate ligament PCO"} {"#name":"keyword" "$":{"id":"k0060"} "$$":[{"#name":"text" "_":"posterior condylar offset PS"} {"#name":"keyword" "$":{"id":"k0070"} "$$":[{"#name":"text" "_":"posterior-stabilized TKA"} {"#name":"keyword" "$":{"id":"k0080"} "$$":[{"#name":"text" "_":"total knee arthroplasty |
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