We present a case of a 26-year-old gentleman with isolated
right infraspinatus atrophy arising from a spinoglenoid cyst
of the right shoulder. He presented two years following his
shoulder injury and failed conservative rehabilitation alone.
At initial arthroscopic surgery, a superior labral anterior to
posterior (SLAP) tear was diagnosed and the spinoglenoid
cyst was debrided without formal labral repair. The patient’s
condition did not improve, and second arthroscopy was
performed three months following the first with suture
anchor repair of the labral tear and cyst decompression. Postoperative magnetic resonant imaging (MRI) scans showed
complete resolution of the cyst and recovery of infraspinatus
muscle bulk at six months. At final follow-up 18 months post
SLAP repair, he has regained full shoulder function and has
returned to recreational sports. Our case highlights the
importance of proper management of SLAP tears in
resolving spinoglenoid cysts by demonstrating the outcomes
from two different surgical methods in the same patient.