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Trauma

SLAP LESIONS. EPIDEMIOLOGICAL STUDY

European Federation of National Associations of Orthopaedics and Traumatology (EFORT) - 12th Congress



Abstract

Intra-articular shoulder pathology has been recognised in more detail following widespread use of shoulder arthroscopy. The purpose of this epidemiological study is to present the incidence and exact type of SLAP lesions in our operated population and to correlate them with the presence of other shoulder lesions.

Between 2004 and 2010 425 patients underwent shoulder arthroscopy in our department (311 for rotator cuff tears or subacromial impingement, 102 for shoulder instability, 12 for SLAP lesions). Eighty-two SLAP lesions (19.2% overall) were recognized during these procedures.

In 44 cases the lesion was SLAP type I (53.6%), in 10 type II (12.2%), in 1 type III (1.2%), in 1 type IV (1.2%), in 24 type V (29.26%) and finally in 2 type VI (2.43%). In more detail SLAP I lesions were associated in 8 patients with subacromial impingement syndrome, in 33 with RC tear and in 3 patients with anterior instability. Type II, III and IV were preoperatively diagnosed, while type V and VI lesions were found in patients with chronic anterior shoulder instability.

SLAP lesions are diagnosed more accurately during shoulder arthroscopy rather than with plain shoulder MRI scan. In our study population only 12 cases were accurately diagnosed with a pre-operative MRI scan, while the remaining 70 cases were missed. Additionally, there was significant correlation between rotator cuff problems and SLAP I lesions, while chronic shoulder instability was associated with SLAP V and VI (25.4% of patients with instability).

Shoulder arthroscopy not only has changed SLAP lesion diagnosis and treatment but also reveals the correlation of various SLAP lesion types with specific shoulder pathologies.