Introduction A ganglion cyst can induce symptoms around the knee and should be considered as an intra-articular mass in differential diagnosis. Case Presentation A 22-year-old female presented with a persistent medial knee joint pain in her left knee for 2 years. There was soft tissue swelling on the anteromedial aspect of the infrapatellar region on her left knee. Lachman and McMurray tests ...

Meniscal cysts are rare and often are a result of extrusion of synovial fluid through a tear of the meniscus, resulting in a one-way valve effect of the tear. Arthroscopic partial meniscectomy of the meniscus with intra-articular cyst drainage has become the standard of care. We report a case of an unusually large symptomatic medial meniscal cyst, situated postero-medially and pressing on the p...

Due to a transcription error, the teaching points were mistakenly excluded from this article. Please find the teaching points below: Teaching Points • Ganglion and synovial cysts are frequently associated with osteoarthritis. • A smooth, thin-walled, homogeneous cyst with a stalk connecting to the joint is typical. • Thin septa and internal debris should not be misinterpreted as worrisome findi...

We report the incidence of pseudotumours in a single-surgeon consecutive series of 670 metal-on-metal hip resurfacings performed in the last ten years, with a minimum follow-up of one year. Two cases of pseudotumours have been found and are discussed in detail including metrology and wear analyses of the explanted components. The first was a painless, large synovial cyst in the thigh, secondary...

Most of tumours of the foot are tumour-like (synovial cyst, foreign body reactions and epidermal inclusion cyst) or benign conditions (tenosynovial giant cells tumours, planta fibromatosis). Malignant tumours of the soft-tissue and skeleton are very rare in the foot and their diagnosis is often delayed with referral to specialised teams after initial inappropriate procedures or unplanned excisi...

A 59-year-old man with knee arthritis suddenly developed left posterior thigh pain and complete paralysis of his foot. EMG/nerve conduction studies localized the lesion to the distal sciatic nerve in the thigh (absent motor units from the short head of biceps femoris but normal vastus lateralis). Imaging demonstrated an intraneural ganglion cyst in the tibial nerve extending up to the sciatic n...

A 51-year-old man with a 1-month history of lower back pain and radiating pain visited to our pain clinic. A magnetic resonance imaging (MRI) scan demonstrated a cyst like mass at the level of the L4-5 interspace and compression of the thecal sac and the nerve root on the right side. We performed percutaneous needle aspiration of the lumbar zygapophyseal joint synovial cyst under fluoroscopic g...

The magnetic resonance imaging (MRI) features of a rheumatoid arthritic geode are presented. Development of such a cyst from before x ray diagnosis to its coalescence with the wrist joint is described. The evidence suggests that these juxta-articular cysts are not merely an intrusion of the synovial cavity into the bone marrow but start as isolated structures beneath the subchondral bone.

Spinal cord compressing syndrome due to synovial cyst (SC) of the thoracic spine is a rare clinic condition. We report a case of SC located in the thoracic spine causing spastic paraparesis in a 14 year-old female patient. The SC was removed thoroughly by laminectomy. The patient had an excellent recovery. The etiological and therapeutic aspects are discussed.

Although acromioclavicular (AC) joint cysts are infrequent, when they do occur they are typically associated with full-thickness rotator cuff tears or AC joint degeneration, or both. AC joint cysts are also typically benign, being either ganglionic or synovial. Few reports have described the surgical management of massive AC ganglionic cysts. Some of these reports have advocated repairing the u...