Purpose To assess the effectiveness of a specific non-operative physical therapy program in treating atraumatic full thickness rotator cuff tears using a multicenter prospective cohort study design. Methods Patients with atraumatic full thickness rotator cuff tears who consented to enroll provided data via questionnaire on demographics, symptom characteristics, co-morbidities, willingness to undergo surgery, and patient related outcome assessments (SF-12, ASES, WORC, SANE score, Shoulder Activity Scale). Physicians recorded physical examination and imaging data. Patients began a physical therapy program developed from a systematic review of the literature and returned for evaluation at 6 and 12 weeks. At those visits patients could chose one of three courses: 1.) Cured (no formal follow up scheduled), 2.) Improved (continue therapy with scheduled reassessment in 6 weeks), or 3.) No better (offered surgery). Patients were contacted by telephone at 1 and 2 years to determine if they had undergone surgery since their last visit. A Wilcoxon signed rank test with continuity correction was used to compare initial, 6 week, and 12 week outcome scores. Results The cohort consists of 452 patients. Patient reported outcomes improved significantly at 6 and 12 weeks. Patients elected to undergo surgery less than 25% of the time. Patients who decided to have surgery generally did so between 6 and 12 weeks, and few had surgery between 3 and 24 months. Conclusion Non-operative treatment using this physical therapy protocol is effective for treating atraumatic full thickness rotator cuff tears in approximately 75% of patients followed for two years. Level of evidence Level IV, Case Series, Treatment Study

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

A patient's decision to undergo surgery is influenced more by low expectations regarding the effectiveness of physical therapy than by patient symptoms or anatomic features of the rotator cuff tear. As such, patient symptoms and anatomic features of the chronic rotator cuff tear may not be the best features to use when deciding on surgical intervention.

Introduction The purpose of this cross-sectional study is to determine if the duration of symptoms influences the features seen in patients with atraumatic full thickness rotator cuff tears. Our hypothesis is that increasing duration of symptoms will correlate with more advanced findings of rotator cuff tear severity on MRI, worse shoulder outcome scores, more pain, decreased range of motion, and less strength. Methods 450 patients with full thickness rotator cuff tears were enrolled in a prospective cohort study to assess the effectiveness of nonoperative treatment and factors predictive of success. Duration of patient symptoms were divided into four groups: ≤3 months, 4–6 months, 7–12 months, and >12 months. Data collected at patient entry into the study included: 1.) Demographic data, 2.) History and physical exam data, 3.) Radiographic imaging data, and 4.) Validated patient reported measures of shoulder status. Statistical analysis included a univariate analysis with Kruskal-Wallis test and Pearson tests to identify statistically significant differences in these features for different durations of symptoms Results Longer duration of symptoms does not correlate with more severe rotator cuff disease. Duration of symptoms was not related to weakness; limited range of motion; tear size; fatty atrophy; or validated patient reported outcome measures. Conclusions There is only a weak relationship between the duration of symptoms and features associated with rotator cuff disease. Level of Evidence Level III, Cross Sectional Study

Background: The incidence of posttraumatic osteoarthritis (PTOA) based on clinical radiographic grading criteria at 10 years after anterior cruciate ligament (ACL) reconstruction (ACLR) has not been well-defined in a prospective cohort of young athletic patients. Hypothesis: Among young athletic patients, there is a high incidence of clinical radiographic PTOA at 10 years after ACLR. Additionally, there is a significant difference in clinical radiographic osteoarthritis (OA) changes (joint space narrowing and osteophyte formation) between ACL-reconstructed and contralateral knees at 10 years. Study Design: Case series; Level of evidence, 4. Methods: The first 146 patients in an ongoing nested cohort study of the Multicenter Orthopaedic Outcomes Network (MOON) prospective cohort presented for a minimum 10-year follow-up. Included patients had a sports-related ACL injury, were aged <33 years at the time of ACLR, had no history of ipsilateral or contralateral knee surgery, and did not undergo revision ACLR before follow-up. Bilateral knee metatarsophalangeal view radiographs were obtained and graded according to International Knee Documentation Committee (IKDC), Osteoarthritis Research Society International (OARSI), and modified Kellgren-Lawrence (KL) criteria by 2 blinded reviewers. The incidence and severity of ipsilateral and contralateral radiographic OA were determined among patients without a contralateral ACL injury before 10-year follow-up (N = 133). Results: Interrater reliability was substantial for the IKDC (Gwet Agreement Coefficient [AC] 1 = 0.71), moderate for the KL (0.48), and almost perfect for the OARSI (0.84) grading systems. Among patients with a contralateral radiographically normal knee, the 10-year incidence of clinical radiographic PTOA after ACLR was 37% as defined by osteophytes and 23% as defined by joint space narrowing. The maximum side-to-side difference in the OARSI osteophyte grade in the medial or lateral compartment was 0 in 65% of patients, 1 in 20%, and ≥2 in 15%. The maximum side-to-side difference in the OARSI joint space narrowing grade was 0 in 77% of patients, 1 in 19%, and ≥2 in 4%. Conclusion: In young active patients, the 10-year incidence of clinical radiographic PTOA after ACLR was 37% as defined by osteophytes and 23% as defined by joint space narrowing. The mean difference in the degree of osteophyte formation (≤1 grade in 85%) and joint space narrowing (≤1 grade in 96%) between the ACL-reconstructed and contralateral knees was small. Registration: NCT02717559 (ClinicalTrials.gov identifier)