Radiographic Risk Factors and Signs of Abductor Tears in the Hip
Authors: Hartigan DE, Perets I, Walsh JP, Mohr MR, Chaharbakhshi EO, Yuen LC, Domb BG
Journal: Arthroscopy. 2018 Aug;34(8):2389-2397.
DOI: 10.1016/j.arthro.2018.03.039 | PMID: 30078428
Background:
Abductor tendon tears significantly impair hip function and are sometimes difficult to diagnose early. This study identifies specific radiographic risk factors (RRFs) and signs that predict the presence of abductor tendon pathology.
Methods:
Retrospective analysis of patients undergoing surgery for abductor tendon tears. Radiographs and MRI were evaluated to identify anatomical and radiographic predictors.
Key Findings:
- Patients with abductor tears had wider pelvises and longer abductor moment arms.
- Increased body weight moment arm was observed.
- Presence of greater trochanteric enthesophytes was markedly higher (41% vs 3%).
- Enthesophyte presence yielded an odds ratio of 20.7 for predicting abductor tears.
Conclusions:
Radiographic signs such as greater trochanteric enthesophytes are strong predictors of abductor tendon tears. Recognizing these features can improve early diagnosis and management.
What Does This Mean for Providers?
Providers should incorporate radiographic evaluation focusing on pelvis width, abductor moment arm, and especially look for greater trochanteric enthesophytes in patients with lateral hip pain or dysfunction. Early identification may guide timely interventions and improve patient outcomes by addressing abductor pathology before progression.