Bones involved commonly in Idiopathic avascularnecrosis/osteochondritis

Scaphoid -Preiser's disease

Capitulum-Panner's disease

Lunate-Kienbock’s disease

2nd metatarsal-head Freiberg's disease (infarction)

Navicular-Kohler's disease

Calcaneal apophysis-Sever's disease

Tibial tuberosity-Osgood Schlatter's disease

Upper femoral epiphysis-Legg-Calve-Perthes disease

Ring epiphysis of the vertebra-Scheurmann’s disease

Central epiphysis of the vertebra-Calve's disease

Entrapment Syndrome -Nerve involved

Carpal tunnel syndrome -Median nerve (at wrist) (Most Common)

Pronator syndrome -Median nerve (proximally compressed beneath - ligament of struthers, bicipital aponeurosis or origins of pronator teres or flexor digitorum superficialis)

Cubital tunnel syndrome -Ulnar nerve (between two heads of flexor carpi ulnaris)

Guyon's canal syndrome- Ulnar nerve (at wrist)

Thoracic outlet syndrome

 Lower trunk of brachial plexus, (C8 and T1) and subclavian vessels (between clavicle and first rib)

Piriformis syndrome -Scaitic nerve

Meralgia paraesthetica -Lateral cutaneous nerve of thigh

Cheralgia paraesthetica -superficial radial nerve

Tarsal tunnel syndrome -Posterior tibial nerve (behind and below medial malleolus)

Morton's metatarsalgia -lnterdigital nerve compression (usually of 3rd, 4th toe)