Achilles tendon rupture (ATR) presents a unique challenge to the surgeon because the gap in the Achilles tendon must be bridged by a procedure other than primary repair. Although there are numerous approaches to addressing this issue, the gastro-soleus fascial turndown flap with bone-anchoring suture or osseointegration stands out. Despite its popularity, there are few studies that have objectively evaluated the procedure's efficacy. To evaluate the efficacy of turndown flap repair with bone anchoring polypropylene suture through an 18G hypodermic/spinal needle with special reference to its various functional outcomes. This prospective observational study was conducted in the Department of Burns, Plastic, and Reconstructive Surgery, SCB Medical College & Hospital, Cuttack, for a period of two years from November 2018 to December 2020. Tendo Achilles injury patients admitted to the department due to various etiologies were considered as study samples. The difference between pre-operative and post-operative (Achilles Tendon Total Rupture Score) ATRSs was calculated. The difference between post-operative and pre-operative calf circumferences was calculated. A total of 35 patients underwent surgery for ATR. Male patients predominated. The most common cause was accidental injury in an Indian closet. The majority of patients (13, or 37.14%) presented with a gap of 4 to 5 cm between the proximal and distal segments with the ankle in a neutral position. Out of the study population, 11 patients (31%) had an ATR score difference ranging from 31–40. Thirtten patients (37.14%) had a difference ranging from 1.1 to 2 cm. Sixty percent of the cases had a good outcome. Two patients had an unsatisfactory outcome, which constituted around 5.72% of the study population. The turndown flap with bone-anchoring polypropylene suture using an 18G hypodermic/spinal needle is an effective, relatively simple, and non-time-consuming procedure with a very short learning curve and very minimal morbidity for the repair of Achilles tendon injuries with a gap (where primary repair is not possible).