45 EXPECTATIONS OF AND SATISFACTION WITH PAIN AND PHYSICAL FUNCTION 5 YEARS AFTER TOTAL KNEE REPLACEMENT-A PROSPECTIVE STUDY

Abstract

p = 0.001). We obtained a minimum follow-up on 206 patients. Average time to follow-up was 16 months (range: 12 to 27). Average age was 39 (range: 18 to 77). The average body-mass index was 24.5 kg/m2. Patients with joint space less than 2mm had lower post-operative HOS ADL (78 vs 88, p = 0001), lower HOS Sport (52 vs 69, p = 0.001), lower NAHS (71 vs. 84, p = 0.001), lower MHHS (74 vs 84, p = 0.002), and lower patient satisfaction (6.6 vs 8.2, p = 0.001). Improvements in all 5 clinical outcome measures were significantly lower compared to patients with greater than 2mm of joint space. A preoperative joint space of less than 2 mm was 9.3 times [CI: 3.6 to 23.7] more likely to collapse postoperatively. Fifteen patients underwent total hip arthroplasty (THA) at an average of 12.4 months (range:3.2 to 24.3) after arthroscopy. Patients who required THA were significantly older at the time of arthroscopy (57 vs 38 years, p=0.001). Those patients with a pre-operative joint space of less than 2.0 mm were 6.8 times (CI 2.3 to 20) more likely to progress to a total hip arthroplasty following arthroscopy. Patients who required a THA had significantly lower pre-operative MHHS (46 vs 61, p = 0.001), NAHS (54 vs 64, p = 0.021) and HOS ADL (58 vs 70, p = 0.006). Conclusions: This study showed that older patients with decreased preoperative joint space were more likely to progress to total hip arthroplasty.