BACKGROUND: Major joints of the lower limbs are commonly affected by @entity309 ( @entity309 ), with consequent @entity158 , loss of function, and progressive disability. Knee replacement represents a useful solution, but a highly constrained implant design is often needed in order to face the severe anatomical @entity85 and the gross instability that the surgeon may encounter in the rheumatoid knee. OBJECTIVES: The aim of this work was to evaluate the @entity30284 -Model(  ) rotating hinge knee prosthesis implanted in @entity1 affected by @entity309 and severely damaged knees. @entity1 AND METHODS: We retrospectively evaluated a series of 38  @entity1 with @entity309 implanted with the @entity30284 -Model(  ) rotating hinge knee prosthesis for primary or revision surgery (mean follow-up 6.1  years; mean age at surgery 71.5  years). At the time of surgery, the mean duration of @entity309 was 13.2  years. @entity1 were evaluated clinically and radiographically and the Knee Society Score (KSS) was used. RESULTS: Implant survival at most recent follow-up was 91.7   %. Mean final knee flexion was 102.7     . The mean KSS was 93.5 (excellent) and 67.1 (good) for clinical and functional score, respectively. Mild @entity158 was present in 10  @entity1 . No sign of @entity893 or residual instability was found. No evidence of loosening or implant failure was observed in x-rays. CONCLUSION: The @entity30284 -Model(  ) rotating hinge knee prosthesis provides excellent @entity158 relief, functional recovery, and intrinsic knee stability both in complex primary and in revision knee arthroplasty in the majority of @entity1 with severely affected @entity309 .

The @entity30284 -Model(  ) rotating hinge for XXXX : Functional results in primary and revision surgery.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'PATIENTS'] @entity309 :: ('MESH:D001172', 'Disease') :: ['rheumatoid knees', 'rheumatoid arthritis', 'RA'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain'] @entity85 :: ('MESH:D009140', 'Disease') :: ['deformities'] @entity30284 :: ('79694', 'Gene') :: ['Endo'] @entity893 :: ('MESH:D017760', 'Disease') :: ['malalignment']
@entity309 :: (MESH:D001172,Disease) :: ['rheumatoid knees']
