The 2011 champion landed awkwardly after diving for a volley midway through the third set against the world number 44 on Centre Court yesterday, but recovered to win out 6-4 6-2 6-4.
Djokovic conceded he thought he had dislocated his shoulder, hearing a “click or pop”, but medics have since given the 27-year-old the all-clear.
The six-time grand slam winner will face Jo-Wilfried Tsonga in the last 16, thankful of a two-day break for slight muscle pain to subside.
“It was obviously a scary fall,” said the Serbian. “I tried to land on my left arm. That split-second was not pleasant: I definitely feared I could be out of the tournament.
“I basically had a strong impact on the shoulder: when I stood up I felt that click or pop, whatever you call it.
“I feared maybe it might be a dislocated shoulder, something like that, or a joint problem.
“Luckily for me it was only an impact that had a minor effect on the joint and the muscles around, but no damage that can cause a bigger problem.”
Tsonga saw off Jimmy Wang 6-2 6-2 7-5 to set up that clash with the top seed – a re-run of their Roland Garros clash that Djokovic won easily.
Andy Murray, pictured, completed a perfect first week at Wimbledon by brushing aside Roberto Bautista Agut in the third round last night.
The Spanish 27th seed had been expected to provide Murray’s first test but the defending champion was even more impressive than he had been in the first two rounds and raced to a 6-2 6-3 6-2 victory.
Murray’s coach Amelie Mauresmo will no doubt be delighted with their first week of grand slam tennis, and the pair will now have two days to prepare for a fourth-round meeting with big-serving Kevin Anderson.
Meanwhile, Elsewhere, Bulgarian Grigor Dimitrov proved his new-found athleticism by seeing off 21st seed Alexandr Dolgopolov in a grinding five-set victory.
The 11th seed Queen’s Club champion prevailed 6-7 (3/7) 6-4 2-6 6-4 6-1 against the Ukrainian on Court Number One.
Veteran Australian Lleyton Hewitt forced Jerzy Janowicz into five sets, but was unable to edge out the 15th seed.
The 2002 Wimbledon champion squeezed the 2013 semi-finalist and world number 25 all the way but Janowicz eventually triumphed 7-5 6-4 6-7 (7/9) 4-6 6-3 in second-round action, to tee up a meeting with Tommy Robredo.
In the women’s singles, Barbora Zahlavova Strycova caused the biggest shock so far by sending second seed Li Na crashing out in the third round.
The Czech, 28, produced a stunning effort to see off the reigning Australian Open champion 7-6 (7/5) 7-6 (7/5) amid high drama on Court One.
Strycova will now face 16th seed Caroline Wozniacki, who ended the run of 16-year-old qualifier Ana Konjuh, 6-3, 6-0, to reach the fourth round for the first time in three years.