HISTOLOGICAL DEVELOPMENT OF BURSAE AROUND HUMAN FOETAL SHOULDER JOINT

Sabia Nazir; Zahid Bashir; Showkat Ahmad; Javed Ahmad Khan; Yasmeen Jan

Volume : V, Issue : VI, June - 2016

HISTOLOGICAL DEVELOPMENT OF BURSAE AROUND HUMAN FOETAL SHOULDER JOINT

Sabia Nazir, Zahid Bashir, Showkat Ahmad, Javed Ahmad Khan, Yasmeen Jan

Abstract :

 Shoulder joint is a synovial joint of ball and socket variety. The various components of shoulder joint start developing in early emyonic life and foetal life around 6th to 12th week of development. The present study aims to gain an insight regarding development of various bursae around this joint. Shoulder joints of 32 foetuses collected from areas in and around Jammu were dissected properly and decalcified in Gooding and Stewart’s solution. Sections were cut after obtaining blocks by paraffin wax embedding method. Slides were stained using Haematoxylin and Eosin and Masson’s trichrome staining and important findings were documented. Bursae are seen as small spaces in the synovial tissue. At 10 weeks subacromial bursa is seen. Bursa subscapularis is seen at about 14 weeks. Subcoracoid bursa is seen at 141/2 weeks. There is progressive increase in amount of fious tissue around these bursae. No communication is seen between bursa subscapularis and joint cavity. So by 10 weeks bursae begin to appear in shoulder joint and from very early stages development proceeds to achieve adult characteristics.