title: Knee manipulation after total knee arthroplasty: comparison of two implant designs.
abstract: Substantial postoperative stiffness requiring manipulation is a well-recognized complication of total knee replacement. This study sought to determine whether the Medial-Pivot (MP) knee (Wright Medical, Memphis, TN) or the Double-High (DH) knee (Wright Medical) is more often associated with manipulation under anesthesia (MUA) for post-total knee arthroplasty (TKA) knee stiffness. It was hypothesized that manipulation rates would be similar. Retrospective review of 755 TKA patients showed that 4.1% required MUA, which is comparable to the literature. Manipulation by MUA for DH and MP knees was generally successful, with an average overall improvement in knee flexion of nearly 30°. MP and DH knees appear to have a lower than average prevalence of post-TKA knee stiffness requiring manipulation when compared with the literature. The number of MP and DH knees requiring MUA did not appear to differ substantially.
authors.affiliation: HipKnee Arkansas Foundation, Little Rock, Arkansas 72205, USA. Lbarnes@arspecialty.com
authors.forename: C Lowry
authors.initials: CL
authors.lastname: Barnes
authors.forename: Daniel
authors.initials: D
authors.lastname: Lincoln
authors.forename: Becky
authors.initials: B
authors.lastname: Wilson
authors.forename: Marty
authors.initials: M
authors.lastname: Bushmaier
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006801:Humans; D057913:Joint Capsule Release; D007592:Joint Diseases / Q000209:etiology / Q000628:therapy*; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008349:Manipulation, Orthopedic; D008875:Middle Aged; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D012189:Retrospective Studies