Kwak JM, et al. - Between January 2010 and December 2015, investigators examined the candidates treated with osteocapsular arthroplasty to assess clinical and radiologic consequences of osteocapsular arthroplasty for primary elbow osteoarthritis following open (OPEN) and arthroscopic (ARTHRO) for mean follow-up time of 36.6 ± 14.4 (24-89) and 35.4 ± 14.2 (24-83) months for OPEN and ARTHRO, respectively. They noted improvement in overall scores for range of motion (ROM) (preoperative to final follow-up: 65.5° ± 22.8 to 112.0° ± 50.9), Mayo Elbow Performance Score (MEPS) (42.9 ± 13.7 to 73.7 ± 16.6), and visual analog scale (VAS) (6.6 ± 1.3 to 4.0 ± 2.3). In both groups, they reported worse last follow-up VAS score and MEPS in the narrowing group [ulnohumeral joint (UHJ)<2 mm, grades 2 and 3] as compared to in the intact group (UHJ >2 mm, grade 1).